Attachment 883003 Details for Bug 922789 – environment

environment

environment (text/plain), 133.20 KB, created by Toralf Förster on 2024-01-23 20:20:51 UTC

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Creator: Toralf Förster

Created: 2024-01-23 20:20:51 UTC

Size: 133.20 KB

patch

obsolete

>declare -x ABI="amd64"
>declare -x ABI_MIPS=""
>declare -x ABI_S390=""
>declare -x ABI_X86="64"
>declare -x ADA_TARGET=""
>declare -x ALSA_CARDS=""
>declare -x AMDGPU_TARGETS=""
>declare -x ANT_HOME="/usr/share/ant"
>declare -x APACHE2_MODULES=""
>declare -x APACHE2_MPMS=""
>declare -x ARCH="amd64"
>declare BDEPEND=$'python? (\n\t\tpython_single_target_python3_10? (\n\t\t\t\t\n\t\t\tdev-python/setuptools[python_targets_python3_10(-)]\n\t\t ) python_single_target_python3_11? (\n\t\t\t\t\n\t\t\tdev-python/setuptools[python_targets_python3_11(-)]\n\t\t )\n\t) app-alternatives/ninja >=dev-build/cmake-3.20.5'
>declare -x BINPKG_FORMAT="gpkg"
>declare -x BINPKG_GPG_SIGNING_BASE_COMMAND="/usr/bin/flock /run/lock/portage-binpkg-gpg.lock /usr/bin/gpg --sign --armor [PORTAGE_CONFIG]"
>declare -x BINPKG_GPG_SIGNING_DIGEST="SHA512"
>declare -x BINPKG_GPG_VERIFY_BASE_COMMAND="/usr/bin/gpg --verify --batch --no-tty --no-auto-check-trustdb --status-fd 2 [PORTAGE_CONFIG] [SIGNATURE]"
>declare -x BINPKG_GPG_VERIFY_GPG_HOME="/etc/portage/gnupg"
>declare -x BOOTSTRAP_USE="unicode internal-glib pkg-config split-usr xml python_targets_python3_11 python_single_target_python3_11 multilib"
>declare -- BUILD_DIR="/var/tmp/portage/net-libs/libtorrent-rasterbar-2.0.9/work/libtorrent-rasterbar-2.0.9_build"
>declare -x CALLIGRA_FEATURES=""
>declare -x CAMERAS=""
>declare -x CARGO_TERM_COLOR="never"
>declare -x CBUILD="x86_64-pc-linux-gnu"
>declare -x CFLAGS="-O2 -pipe -march=native -fno-diagnostics-color"
>declare -x CFLAGS_amd64="-m64"
>declare -x CFLAGS_default
>declare -x CFLAGS_x32="-mx32"
>declare -x CFLAGS_x86="-m32 -mfpmath=sse"
>declare -x CHOST="x86_64-pc-linux-gnu"
>declare -x CHOST_amd64="x86_64-pc-linux-gnu"
>declare -x CHOST_default="x86_64-pc-linux-gnu"
>declare -x CHOST_x32="x86_64-pc-linux-gnux32"
>declare -x CHOST_x86="i686-pc-linux-gnu"
>declare -- CMAKE_BINARY="cmake"
>declare -- CMAKE_BUILD_TYPE="RelWithDebInfo"
>declare -x CMAKE_COLOR_DIAGNOSTICS="OFF"
>declare -x CMAKE_COLOR_MAKEFILE="OFF"
>declare -- CMAKE_MAKEFILE_GENERATOR="ninja"
>declare -a CMAKE_REMOVE_MODULES_LIST=([0]="FindBLAS" [1]="FindLAPACK")
>declare -- CMAKE_USE_DIR="/var/tmp/portage/net-libs/libtorrent-rasterbar-2.0.9/work/libtorrent-rasterbar-2.0.9"
>declare -- CMAKE_VERBOSE="ON"
>declare -- CMAKE_WARN_UNUSED_CLI="yes"
>declare -x COLLECTD_PLUGINS=""
>declare -x CPU_FLAGS_ARM=""
>declare -x CPU_FLAGS_PPC=""
>declare -x CPU_FLAGS_X86=""
>declare -x CSSTRNGS="/usr/share/locale"
>declare -x CTARGET_default="x86_64-pc-linux-gnu"
>declare -x CURL_SSL=""
>declare -x CXXFLAGS="-O2 -pipe -march=native -fno-diagnostics-color"
>declare -x DEFAULT_ABI="amd64"
>declare -x DEFINED_PHASES=" compile configure install prepare setup test"
>declare DEPEND=$'\n\tdev-libs/boost:=\n\tpython? (\n\t\tpython_single_target_python3_10? (\n\t\t\tdev-lang/python:3.10\n\t\t) python_single_target_python3_11? (\n\t\t\tdev-lang/python:3.11\n\t\t) \n\t\tpython_single_target_python3_10? (\n\t\t\t\t\n\t\t\tdev-libs/boost[python,python_targets_python3_10(-)]\n\t\t ) python_single_target_python3_11? (\n\t\t\t\t\n\t\t\tdev-libs/boost[python,python_targets_python3_11(-)]\n\t\t )\n\t)\n\tssl? (\n\t\tgnutls? ( net-libs/gnutls:= )\n\t\t!gnutls? ( dev-libs/openssl:= )\n\t)\n '
>declare DESCRIPTION="C++ BitTorrent implementation focusing on efficiency and scalability"
>declare -- DESKTOP_DATABASE_DIR="/usr/share/applications"
>declare -x DIROPTIONS="-m0755"
>declare -x DOTNET_ROOT="/opt/dotnet-sdk-bin-8.0"
>declare -x EAPI="8"
>declare -x EGO_BUILD_FLAGS="-p 4"
>declare -x ELIBC="glibc"
>declare -x ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GDK_PIXBUF_MODULE_FILE GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR XDG_STATE_HOME"
>declare -- EPOCHREALTIME="1706039050.336077"
>declare -- EPOCHSECONDS="1706039050"
>declare -x EXEOPTIONS="-m0755"
>declare -x FCFLAGS="-O2 -pipe -march=native -fno-diagnostics-color"
>declare -x FETCHCOMMAND_SSH="bash -c \"x=\\\${2#ssh://} ; host=\\\${x%%/*} ; port=\\\${host##*:} ; host=\\\${host%:*} ; [[ \\\${host} = \\\${port} ]] && port= ; exec rsync --rsh=\\\"ssh \\\${port:+-p\\\${port}} \\\${3}\\\" -avP \\\"\\\${host}:/\\\${x#*/}\\\" \\\"\\\$1\\\"\" rsync \"\${DISTDIR}/\${FILE}\" \"\${URI}\" \"\${PORTAGE_SSH_OPTS}\""
>declare -x FFLAGS="-O2 -pipe -march=native -fno-diagnostics-color"
>declare -x FFTOOLS=""
>declare -x FLTK_DOCDIR="/usr/share/doc/fltk-1.3.8/html"
>declare -x FPATH="/usr/share/Lmod/init/ksh_funcs"
>declare -x GCC_COLORS=""
>declare -x GCC_SPECS=""
>declare -x GIT_PAGER="cat"
>declare -x GO19CONCURRENTCOMPILATION="0"
>declare -x GOMAXPROCS="4"
>declare -x GPG_VERIFY_GROUP_DROP="nogroup"
>declare -x GPG_VERIFY_USER_DROP="nobody"
>declare -x GPSD_PROTOCOLS=""
>declare -x GRUB_PLATFORMS=""
>declare -x GSETTINGS_BACKEND="dconf"
>declare HOMEPAGE="https://libtorrent.org/ https://github.com/arvidn/libtorrent"
>declare IDEPEND=""
>declare -x INHERITED=" toolchain-funcs multilib flag-o-matic multiprocessing ninja-utils xdg-utils cmake python-utils-r1 python-single-r1"
>declare -x INPUT_DEVICES=""
>declare -x INSOPTIONS="-m0644"
>declare IUSE="+dht debug gnutls python ssl test python_single_target_python3_10 python_single_target_python3_11"
>declare -x IUSE_EFFECTIVE="abi_x86_64 alpha amd64 amd64-linux arm arm64 arm64-macos debug dht elibc_Darwin elibc_SunOS elibc_bionic elibc_glibc elibc_mingw elibc_musl gnutls hppa ia64 kernel_Darwin kernel_SunOS kernel_linux loong m68k mips ppc ppc-macos ppc64 ppc64-linux prefix prefix-guest prefix-stack python python_single_target_python3_10 python_single_target_python3_11 riscv s390 sparc ssl test x64-macos x64-solaris x86 x86-linux"
>declare -x IUSE_IMPLICIT="abi_x86_64 prefix prefix-guest prefix-stack"
>declare -x JAVAC="/etc/java-config-2/current-system-vm/bin/javac"
>declare -x JAVACC_HOME="/usr/share/javacc/"
>declare -x JAVA_HOME="/etc/java-config-2/current-system-vm"
>declare -x JDK_HOME="/etc/java-config-2/current-system-vm"
>declare -x KERNEL="linux"
>declare -x KERNEL_ABI="amd64"
>declare -x KEYWORDS="amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv ~sparc x86"
>declare -x L10N=""
>declare -x LADSPA_PATH="/usr/lib64/ladspa"
>declare -x LANG="C.UTF8"
>declare -x LCD_DEVICES=""
>declare -x LC_COLLATE="C"
>declare -x LC_MESSAGES="C"
>declare -x LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0"
>declare -x LDFLAGS_amd64="-m elf_x86_64"
>declare -x LDFLAGS_default
>declare -x LDFLAGS_x32="-m elf32_x86_64"
>declare -x LDFLAGS_x86="-m elf_i386"
>declare -x LEX="flex"
>declare -x LIBDIR_amd64="lib64"
>declare -x LIBDIR_default="lib"
>declare -x LIBDIR_x32="libx32"
>declare -x LIBDIR_x86="lib"
>declare -x LIBOPTIONS="-m0644"
>declare -x LIBREOFFICE_EXTENSIONS=""
>declare -x LICENSE="BSD"
>declare -x LLVM_TARGETS=""
>declare -x LMOD_CACHED_LOADS="yes"
>declare -x LMOD_CMD="/usr/share/Lmod/libexec/lmod"
>declare -x LMOD_DIR="/usr/share/Lmod/libexec"
>declare -x LMOD_PKG="/usr/share/Lmod"
>declare -x LMOD_ROOT="/usr/share/Lmod/.."
>declare -x LMOD_SETTARG_FULL_SUPPORT="no"
>declare -x LMOD_VERSION="8.7.23"
>declare -x LMOD_sys="Linux"
>declare -x LUA_SINGLE_TARGET=""
>declare -x LUA_TARGETS=""
>declare -x MAILTO="tinderbox"
>declare -x MAKEOPTS=" -j4"
>declare -x MANPAGER="manpager"
>declare -- MIMEINFO_DATABASE_DIR="/usr/share/mime"
>declare -x MIX_REBAR3="/usr/bin/rebar3"
>declare -x MODULEPATH="/etc/modulefiles/Linux:/etc/modulefiles/Core:/usr/share/Lmod/modulefiles/Core"
>declare -x MODULEPATH_ROOT="/etc/modulefiles"
>declare -x MODULESHOME="/usr/share/Lmod"
>declare -x MONKEYD_PLUGINS=""
>declare -x MOZ_GMP_PATH="/usr/lib64/nsbrowser/plugins/gmp-gmpopenh264/system-installed"
>declare -x MULTILIB_ABIS="amd64 x86"
>declare -x MULTILIB_STRICT_DENY="64-bit.*shared object"
>declare -x MULTILIB_STRICT_DIRS="/lib32 /lib /usr/lib32 /usr/lib /usr/kde/*/lib32 /usr/kde/*/lib /usr/qt/*/lib32 /usr/qt/*/lib /usr/X11R6/lib32 /usr/X11R6/lib"
>declare -x MULTILIB_STRICT_EXEMPT="(perl5|gcc|binutils|eclipse-3|debug|portage|udev|systemd|clang|python-exec|llvm)"
>declare -x NGINX_MODULES_HTTP=""
>declare -x NGINX_MODULES_MAIL=""
>declare -x NGINX_MODULES_STREAM=""
>declare -- NINJA="ninja"
>declare -- NINJA_DEPEND="app-alternatives/ninja"
>declare -- NINJA_VERBOSE="ON"
>declare -x NPM_CONFIG_GLOBALCONFIG="/etc/npm/npmrc"
>declare -x OCAML_COLOR="never"
>declare -x OFFICE_IMPLEMENTATION=""
>declare -x OMP_DYNAMIC="FALSE"
>declare -x OMP_NESTED="FALSE"
>declare -x OMP_NUM_THREADS="4"
>declare -x OPCODEDIR="/usr/lib64/csound/plugins"
>declare -x OPENMPI_FABRICS=""
>declare -x OPENMPI_OFED_FEATURES=""
>declare -x OPENMPI_RM=""
>declare -x PATH="/usr/lib/portage/python3.11/ebuild-helpers/xattr:/usr/lib/portage/python3.11/ebuild-helpers:/opt/petrify:/opt/c3-4:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/bin:/usr/lib/llvm/17/bin:/usr/lib/llvm/16/bin:/opt/hermes/bin"
>declare PDEPEND=""
>declare -x PHP_TARGETS=""
>declare -x PKGSYSTEM_ENABLE_FSYNC="0"
>declare -x PORTAGE_COMPRESSION_COMMAND="zstd -T4"
>declare -a PORTAGE_DOCOMPRESS=([0]="/usr/share/doc" [1]="/usr/share/info" [2]="/usr/share/man")
>declare -x PORTAGE_DOCOMPRESS_SIZE_LIMIT="128"
>declare -a PORTAGE_DOCOMPRESS_SKIP=([0]="/usr/share/doc/libtorrent-rasterbar-2.0.9/html")
>declare -a PORTAGE_DOSTRIP=([0]="/")
>declare -a PORTAGE_DOSTRIP_SKIP=()
>declare -x PORTAGE_TMPFS="/dev/shm"
>declare -x PORT_LOGDIR="/var/log/portage"
>declare -x POSTGRES_TARGETS=""
>declare -x PROFILE_ONLY_VARIABLES="ARCH ELIBC IUSE_IMPLICIT KERNEL USE_EXPAND_IMPLICIT USE_EXPAND_UNPREFIXED USE_EXPAND_VALUES_ARCH USE_EXPAND_VALUES_ELIBC USE_EXPAND_VALUES_KERNEL"
>declare -- PROPERTIES=""
>declare -x PYTEST_ADDOPTS="--color=no"
>declare -x PYTHONDONTWRITEBYTECODE="1"
>declare -a PYTHON_COMPAT=([0]="python3_9" [1]="python3_10" [2]="python3_11")
>declare -- PYTHON_DEPS=$'python_single_target_python3_10? (\n\t\t\tdev-lang/python:3.10\n\t\t) python_single_target_python3_11? (\n\t\t\tdev-lang/python:3.11\n\t\t) '
>declare -- PYTHON_REQUIRED_USE="^^ ( python_single_target_python3_10 python_single_target_python3_11 )"
>declare -x PYTHON_SINGLE_TARGET="python3_11"
>declare -- PYTHON_SINGLE_USEDEP="python_single_target_python3_10(-)?,python_single_target_python3_11(-)?"
>declare -x PYTHON_TARGETS=""
>declare -- PYTHON_USEDEP="%PYTHON_USEDEP-NEEDS-TO-BE-USED-IN-PYTHON_GEN_COND_DEP%"
>declare -x PY_FORCE_COLOR="0"
>declare -x QEMU_SOFTMMU_TARGETS=""
>declare -x QEMU_USER_TARGETS=""
>declare RDEPEND=$'\n\tdev-libs/boost:=\n\tpython? (\n\t\tpython_single_target_python3_10? (\n\t\t\tdev-lang/python:3.10\n\t\t) python_single_target_python3_11? (\n\t\t\tdev-lang/python:3.11\n\t\t) \n\t\tpython_single_target_python3_10? (\n\t\t\t\t\n\t\t\tdev-libs/boost[python,python_targets_python3_10(-)]\n\t\t ) python_single_target_python3_11? (\n\t\t\t\t\n\t\t\tdev-libs/boost[python,python_targets_python3_11(-)]\n\t\t )\n\t)\n\tssl? (\n\t\tgnutls? ( net-libs/gnutls:= )\n\t\t!gnutls? ( dev-libs/openssl:= )\n\t)\n '
>declare REPOSITORY
>declare REQUIRED_USE="python? ( ^^ ( python_single_target_python3_10 python_single_target_python3_11 ) ) "
>declare RESTRICT="test"
>declare -x RESUMECOMMAND_SSH="bash -c \"x=\\\${2#ssh://} ; host=\\\${x%%/*} ; port=\\\${host##*:} ; host=\\\${host%:*} ; [[ \\\${host} = \\\${port} ]] && port= ; exec rsync --rsh=\\\"ssh \\\${port:+-p\\\${port}} \\\${3}\\\" -avP \\\"\\\${host}:/\\\${x#*/}\\\" \\\"\\\$1\\\"\" rsync \"\${DISTDIR}/\${FILE}\" \"\${URI}\" \"\${PORTAGE_SSH_OPTS}\""
>declare -x RUBY_TARGETS=""
>declare -x RUST_TEST_TASKS="4"
>declare -x RUST_TEST_THREADS="4"
>declare -x S="/var/tmp/portage/net-libs/libtorrent-rasterbar-2.0.9/work/libtorrent-rasterbar-2.0.9"
>declare -x SANDBOX_DEBUG="0"
>declare -x SANDBOX_DENY=""
>declare -x SANDBOX_METHOD="any"
>declare -x SANDBOX_PREDICT="/var/tmp/portage/net-libs/libtorrent-rasterbar-2.0.9/homedir:/dev/crypto:/var/cache/man:/dev/random:/proc/self/coredump_filter:/dev/random:/proc/self/coredump_filter:/dev/random:/proc/self/coredump_filter:/dev/random:/proc/self/coredump_filter:/var/cache/fontconfig"
>declare -x SANDBOX_READ="/:/var/tmp/portage"
>declare -x SANDBOX_VERBOSE="1"
>declare -x SANDBOX_WRITE=":/dev/console:/dev/fd:/dev/full:/dev/null:/dev/ptmx:/dev/pts/:/dev/pty:/dev/shm:/dev/tts:/dev/tty:/dev/vc/:/dev/zero:/proc/self/fd:/tmp/:/usr/lib/cf:/usr/lib/conftest:/usr/lib32/cf:/usr/lib32/conftest:/usr/lib64/cf:/usr/lib64/conftest:/usr/tmp/:/usr/tmp/cf:/usr/tmp/conftest:/var/tmp/:/var/tmp/portage:/var/tmp/portage/net-libs/libtorrent-rasterbar-2.0.9/homedir/.bash_history"
>declare -x SANE_BACKENDS=""
>declare -x SHELL="/bin/bash"
>declare -x SLOT="0/2.0"
>declare -i SRANDOM="1704454368"
>declare SRC_URI="https://github.com/arvidn/libtorrent/releases/download/v2.0.9/libtorrent-rasterbar-2.0.9.tar.gz"
>declare -x SYMLINK_LIB="no"
>declare -x TERMINFO="/etc/terminfo"
>declare -x TWISTED_DISABLE_WRITING_OF_PLUGIN_CACHE="1"
>declare -x USE="abi_x86_64 amd64 dht elibc_glibc gnutls kernel_linux python_single_target_python3_11 ssl"
>declare -x USERLAND="GNU"
>declare -x USE_EXPAND_IMPLICIT="ARCH ELIBC KERNEL"
>declare -x USE_EXPAND_UNPREFIXED="ARCH"
>declare -x USE_EXPAND_VALUES_ARCH="alpha amd64 amd64-linux arm arm64 arm64-macos hppa ia64 loong m68k mips ppc ppc64 ppc64-linux ppc-macos riscv s390 sparc x64-macos x64-solaris x86 x86-linux"
>declare -x USE_EXPAND_VALUES_ELIBC="bionic Darwin glibc mingw musl SunOS"
>declare -x USE_EXPAND_VALUES_KERNEL="Darwin linux SunOS"
>declare -x UWSGI_PLUGINS=""
>declare -x VIDEO_CARDS=""
>declare -x VOICEMAIL_STORAGE=""
>declare -x XDG_CACHE_HOME="/var/tmp/portage/net-libs/libtorrent-rasterbar-2.0.9/homedir/.cache"
>declare -x XDG_CONFIG_DIRS="/etc/xdg"
>declare -x XDG_CONFIG_HOME="/var/tmp/portage/net-libs/libtorrent-rasterbar-2.0.9/homedir/.config"
>declare -x XDG_DATA_DIRS="/usr/local/share:/usr/share"
>declare -x XDG_DATA_HOME="/var/tmp/portage/net-libs/libtorrent-rasterbar-2.0.9/homedir/.local/share"
>declare -x XDG_RUNTIME_DIR="/var/tmp/portage/net-libs/libtorrent-rasterbar-2.0.9/temp/run"
>declare -x XDG_STATE_HOME="/var/tmp/portage/net-libs/libtorrent-rasterbar-2.0.9/homedir/.local/state"
>declare -x XTABLES_ADDONS=""
>declare -x XZ_OPT="-9 -T4"
>declare -- _CMAKE_ECLASS="1"
>declare -- _CMAKE_SRC_PREPARE_HAS_RUN="1"
>declare -- _FLAG_O_MATIC_ECLASS="1"
>declare -- _MULTILIB_ECLASS="1"
>declare -- _MULTIPROCESSING_ECLASS="1"
>declare -- _NINJA_UTILS_ECLASS="1"
>declare -a _PYTHON_ALL_IMPLS=([0]="pypy3" [1]="python3_10" [2]="python3_11" [3]="python3_12")
>declare -a _PYTHON_HISTORICAL_IMPLS=([0]="jython2_7" [1]="pypy" [2]="pypy1_8" [3]="pypy1_9" [4]="pypy2_0" [5]="python2_5" [6]="python2_6" [7]="python2_7" [8]="python3_1" [9]="python3_2" [10]="python3_3" [11]="python3_4" [12]="python3_5" [13]="python3_6" [14]="python3_7" [15]="python3_8" [16]="python3_9")
>declare -- _PYTHON_SINGLE_R1_ECLASS="1"
>declare -a _PYTHON_SUPPORTED_IMPLS=([0]="python3_10" [1]="python3_11")
>declare -a _PYTHON_UNSUPPORTED_IMPLS=([0]="pypy3" [1]="python3_12")
>declare -- _PYTHON_UTILS_R1_ECLASS="1"
>declare -- _TOOLCHAIN_FUNCS_ECLASS="1"
>declare -x __E_DESTTREE="/usr"
>declare -x __E_DOCDESTTREE=""
>declare -x __E_EXEDESTTREE=""
>declare -x __E_INSDESTTREE=""
>declare -x __LMOD_SET_FPATH="1"
>declare -x ac_cv_c_undeclared_builtin_options="none needed"
>declare -x enable_year2038="no"
>declare -x gl_cv_compiler_check_decl_option="-Werror=implicit-function-declaration"
>declare -x gl_cv_func_getcwd_path_max="yes"
>SwitchGCC () 
>{ 
>    local highest=$(gcc-config --list-profiles --nocolor | cut -f 3 -d ' ' -s | grep -E 'x86_64-(pc|gentoo)-linux-(gnu|musl)-.*[0-9]$' | tail -n 1);
>    if [[ -z $highest ]]; then
>        Mail "${FUNCNAME[0]}: cannot get GCC version";
>        return;
>    fi;
>    if ! gcc-config --list-profiles --nocolor | grep -q -F "$highest *"; then
>        local current;
>        current=$(gcc -dumpversion);
>        echo "major version change of gcc: $current -> $highest" | tee -a $taskfile.history;
>        gcc-config --nocolor $highest;
>        source_profile;
>        add2backlog "sys-devel/libtool";
>        if grep -q '^LIBTOOL="rdlibtool"' /etc/portage/make.conf; then
>            add2backlog "sys-devel/slibtool";
>        fi;
>        add2backlog "%emerge --unmerge sys-devel/gcc:$(cut -f 1 -d '.' <<< $current)";
>    fi
>}
>declare -fx SwitchGCC
>__eapi6_src_install () 
>{ 
>    if [[ -f Makefile || -f GNUmakefile || -f makefile ]]; then
>        emake DESTDIR="${D}" install;
>    fi;
>    einstalldocs
>}
>__eapi6_src_prepare () 
>{ 
>    if ___is_indexed_array_var PATCHES; then
>        [[ ${#PATCHES[@]} -gt 0 ]] && eapply "${PATCHES[@]}";
>    else
>        if [[ -n ${PATCHES} ]]; then
>            eapply ${PATCHES};
>        fi;
>    fi;
>    eapply_user
>}
>__eapi7_ver_compare () 
>{ 
>    local va=${1} vb=${2} a an al as ar b bn bl bs br re LC_ALL=C;
>    re="^([0-9]+(\.[0-9]+)*)([a-z]?)((_(alpha|beta|pre|rc|p)[0-9]*)*)(-r[0-9]+)?$";
>    [[ ${va} =~ ${re} ]] || die "${FUNCNAME}: invalid version: ${va}";
>    an=${BASH_REMATCH[1]};
>    al=${BASH_REMATCH[3]};
>    as=${BASH_REMATCH[4]};
>    ar=${BASH_REMATCH[7]};
>    [[ ${vb} =~ ${re} ]] || die "${FUNCNAME}: invalid version: ${vb}";
>    bn=${BASH_REMATCH[1]};
>    bl=${BASH_REMATCH[3]};
>    bs=${BASH_REMATCH[4]};
>    br=${BASH_REMATCH[7]};
>    __eapi7_ver_compare_int "${an%%.*}" "${bn%%.*}" || return;
>    while [[ ${an} == *.* && ${bn} == *.* ]]; do
>        an=${an#*.};
>        bn=${bn#*.};
>        a=${an%%.*};
>        b=${bn%%.*};
>        if [[ ${a} == 0* || ${b} == 0* ]]; then
>            [[ ${a} =~ 0+$ ]] && a=${a%"${BASH_REMATCH[0]}"};
>            [[ ${b} =~ 0+$ ]] && b=${b%"${BASH_REMATCH[0]}"};
>            [[ ${a} > ${b} ]] && return 3;
>            [[ ${a} < ${b} ]] && return 1;
>        else
>            __eapi7_ver_compare_int "${a}" "${b}" || return;
>        fi;
>    done;
>    [[ ${an} == *.* ]] && return 3;
>    [[ ${bn} == *.* ]] && return 1;
>    [[ ${al} > ${bl} ]] && return 3;
>    [[ ${al} < ${bl} ]] && return 1;
>    as=${as#_}${as:+_};
>    bs=${bs#_}${bs:+_};
>    while [[ -n ${as} && -n ${bs} ]]; do
>        a=${as%%_*};
>        b=${bs%%_*};
>        if [[ ${a%%[0-9]*} == "${b%%[0-9]*}" ]]; then
>            __eapi7_ver_compare_int "${a##*[a-z]}" "${b##*[a-z]}" || return;
>        else
>            [[ ${a%%[0-9]*} == p ]] && return 3;
>            [[ ${b%%[0-9]*} == p ]] && return 1;
>            [[ ${a} > ${b} ]] && return 3 || return 1;
>        fi;
>        as=${as#*_};
>        bs=${bs#*_};
>    done;
>    if [[ -n ${as} ]]; then
>        [[ ${as} == p[_0-9]* ]] && return 3 || return 1;
>    else
>        if [[ -n ${bs} ]]; then
>            [[ ${bs} == p[_0-9]* ]] && return 1 || return 3;
>        fi;
>    fi;
>    __eapi7_ver_compare_int "${ar#-r}" "${br#-r}" || return;
>    return 2
>}
>__eapi7_ver_compare_int () 
>{ 
>    local a=$1 b=$2 d=$(( ${#1}-${#2} ));
>    if [[ ${d} -gt 0 ]]; then
>        printf -v b "%0${d}d%s" 0 "${b}";
>    else
>        if [[ ${d} -lt 0 ]]; then
>            printf -v a "%0$(( -d ))d%s" 0 "${a}";
>        fi;
>    fi;
>    [[ ${a} > ${b} ]] && return 3;
>    [[ ${a} == "${b}" ]]
>}
>__eapi7_ver_parse_range () 
>{ 
>    local range=${1};
>    local max=${2};
>    [[ ${range} == [0-9]* ]] || die "${FUNCNAME}: range must start with a number";
>    start=${range%-*};
>    [[ ${range} == *-* ]] && end=${range#*-} || end=${start};
>    if [[ -n ${end} ]]; then
>        [[ ${start} -le ${end} ]] || die "${FUNCNAME}: end of range must be >= start";
>        [[ ${end} -le ${max} ]] || end=${max};
>    else
>        end=${max};
>    fi
>}
>__eapi7_ver_split () 
>{ 
>    local v=${1} LC_ALL=C;
>    comp=();
>    local s c;
>    while [[ -n ${v} ]]; do
>        s=${v%%[a-zA-Z0-9]*};
>        v=${v:${#s}};
>        [[ ${v} == [0-9]* ]] && c=${v%%[^0-9]*} || c=${v%%[^a-zA-Z]*};
>        v=${v:${#c}};
>        comp+=("${s}" "${c}");
>    done
>}
>__eapi8_src_prepare () 
>{ 
>    local f;
>    if ___is_indexed_array_var PATCHES; then
>        [[ ${#PATCHES[@]} -gt 0 ]] && eapply -- "${PATCHES[@]}";
>    else
>        if [[ -n ${PATCHES} ]]; then
>            eapply -- ${PATCHES};
>        fi;
>    fi;
>    eapply_user
>}
>_clang_fullversion () 
>{ 
>    local ver="$1";
>    shift;
>    set -- $($(tc-getCPP "$@") -E -P - <<< "__clang_major__ __clang_minor__ __clang_patchlevel__");
>    eval echo "${ver}"
>}
>_cmake_banned_func () 
>{ 
>    die "${FUNCNAME[1]} is banned. use -D$1<related_CMake_variable>=\"\$(usex $2)\" instead"
>}
>_cmake_check_build_dir () 
>{ 
>    if [[ ${EAPI} == 7 ]]; then
>        : "${CMAKE_USE_DIR:=${S}}";
>    else
>        : "${CMAKE_USE_DIR:=${PWD}}";
>    fi;
>    if [[ -n ${CMAKE_IN_SOURCE_BUILD} ]]; then
>        BUILD_DIR="${CMAKE_USE_DIR}";
>    else
>        : "${BUILD_DIR:=${CMAKE_USE_DIR}_build}";
>        if [[ ${S} == "${WORKDIR}" && ${BUILD_DIR} == "${WORKDIR}_build" ]]; then
>            eqawarn "QA notice: S=WORKDIR is deprecated for cmake.eclass.";
>            eqawarn "Please relocate the sources in src_unpack.";
>            BUILD_DIR="${WORKDIR}"/${P}_build;
>        fi;
>    fi;
>    einfo "Source directory (CMAKE_USE_DIR): \"${CMAKE_USE_DIR}\"";
>    einfo "Build directory  (BUILD_DIR):     \"${BUILD_DIR}\"";
>    mkdir -p "${BUILD_DIR}" || die
>}
>_cmake_modify-cmakelists () 
>{ 
>    debug-print-function ${FUNCNAME} "$@";
>    grep -qs "<<< Gentoo configuration >>>" "${CMAKE_USE_DIR}"/CMakeLists.txt && return 0;
>    find "${CMAKE_USE_DIR}" -name CMakeLists.txt -exec sed -e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_BUILD_TYPE$[[:space:]].*)\|)$/I{s/^/#_cmake_modify_IGNORE /g}' -e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_COLOR_MAKEFILE[[:space:]].*)/I{s/^/#_cmake_modify_IGNORE /g}' -e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_INSTALL_PREFIX[[:space:]].*)/I{s/^/#_cmake_modify_IGNORE /g}' -e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_VERBOSE_MAKEFILE[[:space:]].*)/I{s/^/#_cmake_modify_IGNORE /g}' -i {} + || die "${LINENO}: failed to disable hardcoded settings";
>    local x;
>    for x in $(find "${CMAKE_USE_DIR}" -name CMakeLists.txt -exec grep -l "^#_cmake_modify_IGNORE" {} +);
>    do
>        einfo "Hardcoded definition(s) removed in $(echo "${x}" | cut -c $((${#CMAKE_USE_DIR}+2))-):";
>        einfo "$(grep -se '^#_cmake_modify_IGNORE' ${x} | cut -c 22-99)";
>    done;
>    cat >> "${CMAKE_USE_DIR}"/CMakeLists.txt <<-_EOF_ || 
>
>message(STATUS "<<< Gentoo configuration >>>
>Build type      \${CMAKE_BUILD_TYPE}
>Install path    \${CMAKE_INSTALL_PREFIX}
>Compiler flags:
>C               \${CMAKE_C_FLAGS}
>C++             \${CMAKE_CXX_FLAGS}
>Linker flags:
>Executable      \${CMAKE_EXE_LINKER_FLAGS}
>Module          \${CMAKE_MODULE_LINKER_FLAGS}
>Shared          \${CMAKE_SHARED_LINKER_FLAGS}\n")
>_EOF_
> die
>}
>_filter-hardened () 
>{ 
>    local f;
>    for f in "$@";
>    do
>        case "${f}" in 
>            -fPIC | -fpic | -fPIE | -fpie | -Wl,pie | -pie)
>                if ! gcc-specs-pie && ! tc-enables-pie; then
>                    continue;
>                fi;
>                if ! is-flagq -nopie && ! is-flagq -no-pie; then
>                    if test-flags -nopie > /dev/null; then
>                        append-flags -nopie;
>                    else
>                        append-flags -no-pie;
>                    fi;
>                fi
>            ;;
>            -fstack-protector | -fstack-protector-strong)
>                if ! gcc-specs-ssp && ! tc-enables-ssp && ! tc-enables-ssp-strong; then
>                    continue;
>                fi;
>                is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector)
>            ;;
>            -fstack-protector-all)
>                if ! gcc-specs-ssp-to-all && ! tc-enables-ssp-all; then
>                    continue;
>                fi;
>                is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all)
>            ;;
>            -fno-strict-overflow)
>                gcc-specs-nostrict || continue;
>                is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow)
>            ;;
>            -D_GLIBCXX_ASSERTIONS | -D_LIBCPP_ENABLE_ASSERTIONS | -D_LIBCPP_ENABLE_HARDENED_MODE)
>                tc-enables-cxx-assertions || continue;
>                append-cppflags -U_GLIBCXX_ASSERTIONS -U_LIBCPP_ENABLE_ASSERTIONS -U_LIBCPP_ENABLE_HARDENED_MODE
>            ;;
>            -D_FORTIFY_SOURCE=*)
>                tc-enables-fortify-source || continue;
>                append-cppflags -U_FORTIFY_SOURCE
>            ;;
>        esac;
>    done
>}
>_filter-var () 
>{ 
>    local f x var=$1 new=();
>    shift;
>    for f in ${!var};
>    do
>        for x in "$@";
>        do
>            [[ ${f} == ${x} ]] && continue 2;
>        done;
>        new+=("${f}");
>    done;
>    export ${var}="${new[*]}"
>}
>_gcc-install-dir () 
>{ 
>    echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null | awk '$1=="install:" {print $2}')"
>}
>_gcc-specs-directive_raw () 
>{ 
>    local cc=$(tc-getCC);
>    local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}');
>    ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 'BEGIN	{ pspec=""; spec=""; outside=1 }
>$1=="*"directive":"  { pspec=spec; spec=""; outside=0; next }
>	outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
>	spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
>	{ spec=spec $0 }
>END	{ print spec }';
>    return 0
>}
>_gcc-specs-exists () 
>{ 
>    [[ -f $(_gcc-install-dir)/$1 ]]
>}
>_gcc_fullversion () 
>{ 
>    local ver="$1";
>    shift;
>    set -- $($(tc-getCPP "$@") -E -P - <<< "__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__");
>    eval echo "${ver}"
>}
>_get_all_makeopts () 
>{ 
>    echo "${MAKEOPTS} ${GNUMAKEFLAGS} ${MAKEFLAGS}"
>}
>_is_flagq () 
>{ 
>    local x var="$1[*]";
>    for x in ${!var};
>    do
>        [[ ${x} == $2 ]] && return 0;
>    done;
>    return 1
>}
>_python_check_EPYTHON () 
>{ 
>    if [[ -z ${EPYTHON} ]]; then
>        die "EPYTHON unset, invalid call context";
>    fi
>}
>_python_check_locale_sanity () 
>{ 
>    local -x LC_ALL=${1};
>    local IFS=;
>    local lc=({a..z});
>    local uc=({A..Z});
>    local input="${lc[*]}${uc[*]}";
>    local output=$(tr '[:lower:][:upper:]' '[:upper:][:lower:]' <<< "${input}");
>    [[ ${output} == "${uc[*]}${lc[*]}" ]]
>}
>_python_check_occluded_packages () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    [[ -z ${BUILD_DIR} || ! -d ${BUILD_DIR}/install ]] && return;
>    local sitedir="${BUILD_DIR}/install$(python_get_sitedir)";
>    [[ ${sitedir} -ef . ]] && return;
>    local f fn diff l;
>    for f in "${sitedir}"/*/;
>    do
>        f=${f%/};
>        fn=${f##*/};
>        [[ ${fn} == *.dist-info || ${fn} == *.egg-info ]] && continue;
>        if [[ -d ${fn} ]]; then
>            diff=$(comm -1 -3 <(find "${fn}" -type f -not -path '*/__pycache__/*' | sort
>assert) <(cd "${sitedir}" && find "${fn}" -type f -not -path '*/__pycache__/*' | sort
>assert));
>            if [[ -n ${diff} ]]; then
>                eqawarn "The directory ${fn} occludes package installed for ${EPYTHON}.";
>                eqawarn "The installed package includes additional files:";
>                eqawarn;
>                while IFS= read -r l; do
>                    eqawarn "    ${l}";
>                done <<< "${diff}";
>                eqawarn;
>                if [[ ! -n ${_PYTHON_WARNED_OCCLUDED_PACKAGES} ]]; then
>                    eqawarn "For more information on occluded packages, please see:";
>                    eqawarn "https://projects.gentoo.org/python/guide/test.html#importerrors-for-c-extensions";
>                    _PYTHON_WARNED_OCCLUDED_PACKAGES=1;
>                fi;
>            fi;
>        fi;
>    done
>}
>_python_export () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    local impl var;
>    case "${1}" in 
>        python* | jython*)
>            impl=${1/_/.};
>            shift
>        ;;
>        pypy | pypy3)
>            impl=${1};
>            shift
>        ;;
>        *)
>            impl=${EPYTHON};
>            if [[ -z ${impl} ]]; then
>                die "_python_export called without a python implementation and EPYTHON is unset";
>            fi
>        ;;
>    esac;
>    debug-print "${FUNCNAME}: implementation: ${impl}";
>    for var in "$@";
>    do
>        case "${var}" in 
>            EPYTHON)
>                export EPYTHON=${impl};
>                debug-print "${FUNCNAME}: EPYTHON = ${EPYTHON}"
>            ;;
>            PYTHON)
>                export PYTHON=${BROOT-${EPREFIX}}/usr/bin/${impl};
>                debug-print "${FUNCNAME}: PYTHON = ${PYTHON}"
>            ;;
>            PYTHON_SITEDIR)
>                [[ -n ${PYTHON} ]] || die "PYTHON needs to be set for ${var} to be exported, or requested before it";
>                PYTHON_SITEDIR=$("${PYTHON}" - "${EPREFIX}/usr" <<-EOF || 
>import sys, sysconfig
>print(sysconfig.get_path("purelib", vars={"base": sys.argv[1]}))
>EOF
> die);
>                export PYTHON_SITEDIR;
>                debug-print "${FUNCNAME}: PYTHON_SITEDIR = ${PYTHON_SITEDIR}"
>            ;;
>            PYTHON_INCLUDEDIR)
>                [[ -n ${PYTHON} ]] || die "PYTHON needs to be set for ${var} to be exported, or requested before it";
>                PYTHON_INCLUDEDIR=$("${PYTHON}" - "${ESYSROOT}/usr" <<-EOF || 
>import sys, sysconfig
>print(sysconfig.get_path("platinclude", vars={"installed_platbase": sys.argv[1]}))
>EOF
> die);
>                export PYTHON_INCLUDEDIR;
>                debug-print "${FUNCNAME}: PYTHON_INCLUDEDIR = ${PYTHON_INCLUDEDIR}";
>                if [[ ! -d ${PYTHON_INCLUDEDIR} ]]; then
>                    die "${impl} does not install any header files!";
>                fi
>            ;;
>            PYTHON_LIBPATH)
>                [[ -n ${PYTHON} ]] || die "PYTHON needs to be set for ${var} to be exported, or requested before it";
>                PYTHON_LIBPATH=$("${PYTHON}" - <<-EOF || 
>import os.path, sysconfig
>print(
>os.path.join(
>sysconfig.get_config_var("LIBDIR"),
>sysconfig.get_config_var("LDLIBRARY"))
>if sysconfig.get_config_var("LDLIBRARY")
>else "")
>EOF
> die);
>                export PYTHON_LIBPATH;
>                debug-print "${FUNCNAME}: PYTHON_LIBPATH = ${PYTHON_LIBPATH}";
>                if [[ ! -n ${PYTHON_LIBPATH} ]]; then
>                    die "${impl} lacks a (usable) dynamic library";
>                fi
>            ;;
>            PYTHON_CFLAGS)
>                local val;
>                case "${impl}" in 
>                    python*)
>                        val=$($(tc-getPKG_CONFIG) --cflags ${impl/n/n-}) || die
>                    ;;
>                    *)
>                        die "${impl}: obtaining ${var} not supported"
>                    ;;
>                esac;
>                export PYTHON_CFLAGS=${val};
>                debug-print "${FUNCNAME}: PYTHON_CFLAGS = ${PYTHON_CFLAGS}"
>            ;;
>            PYTHON_LIBS)
>                local val;
>                case "${impl}" in 
>                    python*)
>                        val=$($(tc-getPKG_CONFIG) --libs ${impl/n/n-}-embed) || die
>                    ;;
>                    *)
>                        die "${impl}: obtaining ${var} not supported"
>                    ;;
>                esac;
>                export PYTHON_LIBS=${val};
>                debug-print "${FUNCNAME}: PYTHON_LIBS = ${PYTHON_LIBS}"
>            ;;
>            PYTHON_CONFIG)
>                local flags val;
>                case "${impl}" in 
>                    python*)
>                        [[ -n ${PYTHON} ]] || die "PYTHON needs to be set for ${var} to be exported, or requested before it";
>                        flags=$("${PYTHON}" - <<-EOF || 
>import sysconfig
>print(sysconfig.get_config_var("ABIFLAGS")
>or "")
>EOF
> die);
>                        val=${PYTHON}${flags}-config
>                    ;;
>                    *)
>                        die "${impl}: obtaining ${var} not supported"
>                    ;;
>                esac;
>                export PYTHON_CONFIG=${val};
>                debug-print "${FUNCNAME}: PYTHON_CONFIG = ${PYTHON_CONFIG}"
>            ;;
>            PYTHON_PKG_DEP)
>                local d;
>                case ${impl} in 
>                    python*)
>                        PYTHON_PKG_DEP="dev-lang/python:${impl#python}"
>                    ;;
>                    pypy3)
>                        PYTHON_PKG_DEP="dev-python/${impl}:="
>                    ;;
>                    *)
>                        die "Invalid implementation: ${impl}"
>                    ;;
>                esac;
>                if [[ -n ${PYTHON_REQ_USE} ]]; then
>                    PYTHON_PKG_DEP+=[${PYTHON_REQ_USE}];
>                fi;
>                export PYTHON_PKG_DEP;
>                debug-print "${FUNCNAME}: PYTHON_PKG_DEP = ${PYTHON_PKG_DEP}"
>            ;;
>            PYTHON_SCRIPTDIR)
>                local dir;
>                export PYTHON_SCRIPTDIR=${EPREFIX}/usr/lib/python-exec/${impl};
>                debug-print "${FUNCNAME}: PYTHON_SCRIPTDIR = ${PYTHON_SCRIPTDIR}"
>            ;;
>            *)
>                die "_python_export: unknown variable ${var}"
>            ;;
>        esac;
>    done
>}
>_python_impl_matches () 
>{ 
>    [[ ${#} -ge 1 ]] || die "${FUNCNAME}: takes at least 1 parameter";
>    [[ ${#} -eq 1 ]] && return 0;
>    local impl=${1/./_} pattern;
>    shift;
>    for pattern in "$@";
>    do
>        case ${pattern} in 
>            -2 | python2* | pypy)
>                if [[ ${EAPI} != 7 ]]; then
>                    eerror;
>                    eerror "Python 2 is no longer supported in Gentoo, please remove Python 2";
>                    eerror "${FUNCNAME[1]} calls.";
>                    die "Passing ${pattern} to ${FUNCNAME[1]} is banned in EAPI ${EAPI}";
>                fi
>            ;;
>            -3)
>                if [[ ${EAPI} != 7 ]]; then
>                    eerror;
>                    eerror "Python 2 is no longer supported in Gentoo, please remove Python 2";
>                    eerror "${FUNCNAME[1]} calls.";
>                    die "Passing ${pattern} to ${FUNCNAME[1]} is banned in EAPI ${EAPI}";
>                fi;
>                return 0
>            ;;
>            3.10)
>                [[ ${impl} == python${pattern/./_} || ${impl} == pypy3 ]] && return 0
>            ;;
>            3.8 | 3.9 | 3.1[1-2])
>                [[ ${impl} == python${pattern/./_} ]] && return 0
>            ;;
>            *)
>                [[ ${impl} == ${pattern/./_} ]] && return 0
>            ;;
>        esac;
>    done;
>    return 1
>}
>_python_run_check_deps () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    local impl=${1};
>    einfo "Checking whether ${impl} is suitable ...";
>    local PYTHON_PKG_DEP;
>    _python_export "${impl}" PYTHON_PKG_DEP;
>    ebegin "  ${PYTHON_PKG_DEP}";
>    has_version -b "${PYTHON_PKG_DEP}";
>    eend ${?} || return 1;
>    declare -f python_check_deps > /dev/null || return 0;
>    local PYTHON_USEDEP="python_targets_${impl}(-)";
>    local PYTHON_SINGLE_USEDEP="python_single_target_${impl}(-)";
>    ebegin "  python_check_deps";
>    python_check_deps;
>    eend ${?}
>}
>_python_set_impls () 
>{ 
>    local i;
>    if [[ ${BASH_VERSINFO[0]} -ge 5 ]]; then
>        [[ ${PYTHON_COMPAT@a} == *a* ]];
>    else
>        [[ $(declare -p PYTHON_COMPAT) == "declare -a"* ]];
>    fi;
>    if [[ ${?} -ne 0 ]]; then
>        if ! declare -p PYTHON_COMPAT &> /dev/null; then
>            die 'PYTHON_COMPAT not declared.';
>        else
>            die 'PYTHON_COMPAT must be an array.';
>        fi;
>    fi;
>    local obsolete=();
>    if [[ ! -n ${PYTHON_COMPAT_NO_STRICT} ]]; then
>        for i in "${PYTHON_COMPAT[@]}";
>        do
>            case ${i} in 
>                pypy3 | python3_9 | python3_1[0-2])
>
>                ;;
>                jython2_7 | pypy | pypy1_[89] | pypy2_0 | python2_[5-7] | python3_[1-9])
>                    obsolete+=("${i}")
>                ;;
>                *)
>                    if has "${i}" "${_PYTHON_ALL_IMPLS[@]}" "${_PYTHON_HISTORICAL_IMPLS[@]}"; then
>                        die "Mis-synced patterns in _python_set_impls: missing ${i}";
>                    else
>                        die "Invalid implementation in PYTHON_COMPAT: ${i}";
>                    fi
>                ;;
>            esac;
>        done;
>    fi;
>    local supp=() unsupp=();
>    for i in "${_PYTHON_ALL_IMPLS[@]}";
>    do
>        if has "${i}" "${PYTHON_COMPAT[@]}"; then
>            supp+=("${i}");
>        else
>            unsupp+=("${i}");
>        fi;
>    done;
>    if [[ ! -n ${supp[@]} ]]; then
>        die "No supported implementation in PYTHON_COMPAT.";
>    fi;
>    if [[ -n ${_PYTHON_SUPPORTED_IMPLS[@]} ]]; then
>        if [[ ${_PYTHON_SUPPORTED_IMPLS[@]} != ${supp[@]} ]]; then
>            eerror "Supported impls (PYTHON_COMPAT) changed between inherits!";
>            eerror "Before: ${_PYTHON_SUPPORTED_IMPLS[*]}";
>            eerror "Now   : ${supp[*]}";
>            die "_PYTHON_SUPPORTED_IMPLS integrity check failed";
>        fi;
>        if [[ ${_PYTHON_UNSUPPORTED_IMPLS[@]} != ${unsupp[@]} ]]; then
>            eerror "Unsupported impls changed between inherits!";
>            eerror "Before: ${_PYTHON_UNSUPPORTED_IMPLS[*]}";
>            eerror "Now   : ${unsupp[*]}";
>            die "_PYTHON_UNSUPPORTED_IMPLS integrity check failed";
>        fi;
>    else
>        _PYTHON_SUPPORTED_IMPLS=("${supp[@]}");
>        _PYTHON_UNSUPPORTED_IMPLS=("${unsupp[@]}");
>        readonly _PYTHON_SUPPORTED_IMPLS _PYTHON_UNSUPPORTED_IMPLS;
>    fi
>}
>_python_verify_patterns () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    local impl pattern;
>    for pattern in "$@";
>    do
>        case ${pattern} in 
>            -[23] | 3.[89] | 3.1[012])
>                continue
>            ;;
>        esac;
>        for impl in "${_PYTHON_ALL_IMPLS[@]}" "${_PYTHON_HISTORICAL_IMPLS[@]}";
>        do
>            [[ ${impl} == ${pattern/./_} ]] && continue 2;
>        done;
>        die "Invalid implementation pattern: ${pattern}";
>    done
>}
>_python_wrapper_setup () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    local workdir=${1:-${T}/${EPYTHON}};
>    local impl=${2:-${EPYTHON}};
>    [[ -n ${workdir} ]] || die "${FUNCNAME}: no workdir specified.";
>    [[ -n ${impl} ]] || die "${FUNCNAME}: no impl nor EPYTHON specified.";
>    if [[ ! -x ${workdir}/bin/python ]]; then
>        mkdir -p "${workdir}"/{bin,pkgconfig} || die;
>        rm -f "${workdir}"/bin/python{,2,3}{,-config} || die;
>        rm -f "${workdir}"/bin/2to3 || die;
>        rm -f "${workdir}"/pkgconfig/python{2,3}{,-embed}.pc || die;
>        local EPYTHON PYTHON;
>        _python_export "${impl}" EPYTHON PYTHON;
>        cat > "${workdir}/bin/python" <<-_EOF_ || 
>#!/bin/sh
>exec "${PYTHON}" "\${@}"
>_EOF_
> die
>        cp "${workdir}/bin/python" "${workdir}/bin/python3" || die;
>        chmod +x "${workdir}/bin/python" "${workdir}/bin/python3" || die;
>        local nonsupp=(python2 python2-config);
>        if [[ ${EPYTHON} == python* ]]; then
>            cat > "${workdir}/bin/python-config" <<-_EOF_ || 
>#!/bin/sh
>exec "${PYTHON}-config" "\${@}"
>_EOF_
> die
>            cp "${workdir}/bin/python-config" "${workdir}/bin/python3-config" || die;
>            chmod +x "${workdir}/bin/python-config" "${workdir}/bin/python3-config" || die;
>            ln -s "${PYTHON/python/2to3-}" "${workdir}"/bin/2to3 || die;
>            ln -s "${EPREFIX}"/usr/$(get_libdir)/pkgconfig/${EPYTHON/n/n-}.pc "${workdir}"/pkgconfig/python3.pc || die;
>            ln -s "${EPREFIX}"/usr/$(get_libdir)/pkgconfig/${EPYTHON/n/n-}-embed.pc "${workdir}"/pkgconfig/python3-embed.pc || die;
>        else
>            nonsupp+=(2to3 python-config python3-config);
>        fi;
>        local x;
>        for x in "${nonsupp[@]}";
>        do
>            cat > "${workdir}"/bin/${x} <<-_EOF_ || 
>#!/bin/sh
>echo "${ECLASS}: ${FUNCNAME}: ${x} is not supported by ${EPYTHON} (PYTHON_COMPAT)" >&2
>exit 127
>_EOF_
> die
>            chmod +x "${workdir}"/bin/${x} || die;
>        done;
>    fi;
>    if [[ ${PATH##:*} != ${workdir}/bin ]]; then
>        PATH=${workdir}/bin${PATH:+:${PATH}};
>    fi;
>    if [[ ${PKG_CONFIG_PATH##:*} != ${workdir}/pkgconfig ]]; then
>        PKG_CONFIG_PATH=${workdir}/pkgconfig${PKG_CONFIG_PATH:+:${PKG_CONFIG_PATH}};
>    fi;
>    export PATH PKG_CONFIG_PATH
>}
>_setup-allowed-flags () 
>{ 
>    ALLOWED_FLAGS=(-pipe -O '-O[123szg]' '-mcpu=*' '-march=*' '-mtune=*' '-mfpmath=*' -flto '-flto=*' -fno-lto '-fstack-protector*' -fstack-clash-protection '-fcf-protection=*' -fbounds-check -fbounds-checking -fno-PIE -fno-pie -nopie -no-pie -fharden-compares -fharden-conditional-branches -fharden-control-flow-redundancy -fno-harden-control-flow-redundancy -fhardcfr-skip-leaf -fhardcfr-check-exceptions -fhardcfr-check-returning-calls '-fhardcfr-check-noreturn-calls=*' '-mindirect-branch=*' -mindirect-branch-register '-mfunction-return=*' -mretpoline '-mharden-sls=*' '-mbranch-protection=*' -fno-unit-at-a-time -fno-strict-overflow '-fsanitize*' '-fno-sanitize*' -g '-g[0-9]' -ggdb '-ggdb[0-9]' -gdwarf '-gdwarf-*' -gstabs -gstabs+ -gz -glldb '-fdebug-default-version=*' -fno-diagnostics-color '-fmessage-length=*' -fno-ident -fpermissive -frecord-gcc-switches -frecord-command-line '-fdiagnostics*' '-fplugin*' '-W*' -w '-[DUILR]*' '-Wl,*' '-fuse-ld=*');
>    ALLOWED_FLAGS+=('-fno-stack-protector*' '-fabi-version=*' -fno-strict-aliasing -fno-bounds-check -fno-bounds-checking -fstrict-overflow -fno-omit-frame-pointer '-fno-builtin*' -mno-omit-leaf-frame-pointer);
>    ALLOWED_FLAGS+=('-mregparm=*' -mno-app-regs -mapp-regs -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 -mno-sse4.2 -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow -mno-popcnt -mno-abm -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt -msoft-float -mno-soft-float -mhard-float -mno-hard-float '-mfpu=*' -mieee -mieee-with-inexact '-mschedule=*' -mfloat-gprs -mspe -mno-spe -mtls-direct-seg-refs -mno-tls-direct-seg-refs -mflat -mno-flat -mno-faster-structs -mfaster-structs -m32 -m64 -mx32 '-mabi=*' -mlittle-endian -mbig-endian -EL -EB -fPIC -mlive-g0 '-mcmodel=*' -mstack-bias -mno-stack-bias -msecure-plt '-m*-toc' '-mfloat-abi=*' '-mtls-dialect=*' -mfix-24k -mno-fix-24k -mfix-r4000 -mno-fix-r4000 -mfix-r4400 -mno-fix-r4400 -mfix-r5900 -mno-fix-r5900 -mfix-rm7000 -mno-fix-rm7000 -mfix-r9500 -mno-fix-r9500 -mfix-r10000 -mno-fix-r10000 -mfix-vr4120 -mno-fix-vr4120 -mfix-vr4130 -mfix-sb1 -mno-fix-sb1 '-Wa,-mfix-loongson2f-nop' '-mr10k-cache-barrier=*' -mthumb -marm -ffixed-x18 -mno-fma4 -mno-movbe -mno-xop -mno-lwp -mno-fsgsbase -mno-rdrnd -mno-f16c -mno-bmi -mno-tbm -mno-avx2 -mno-bmi2 -mno-fma -mno-lzcnt -mno-fxsr -mno-hle -mno-rtm -mno-xsave -mno-xsaveopt -mno-avx512cd -mno-avx512er -mno-avx512f -mno-avx512pf -mno-sha);
>    ALLOWED_FLAGS+=(-mstackrealign '-mpreferred-stack-boundary=*' '-mincoming-stack-boundary=*');
>    ALLOWED_FLAGS+=('--unwindlib=*' '--rtlib=*' '--stdlib=*')
>}
>_tc-getPROG () 
>{ 
>    local tuple=$1;
>    local v var vars=$2;
>    local prog=($3);
>    var=${vars%% *};
>    for v in ${vars};
>    do
>        if [[ -n ${!v} ]]; then
>            export ${var}="${!v}";
>            echo "${!v}";
>            return 0;
>        fi;
>    done;
>    local search=;
>    [[ -n $4 ]] && search=$(type -p $4-${prog[0]});
>    [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p ${!tuple}-${prog[0]});
>    [[ -n ${search} ]] && prog[0]=${search##*/};
>    export ${var}="${prog[*]}";
>    echo "${!var}"
>}
>_tc-has-openmp () 
>{ 
>    local base="${T}/test-tc-openmp";
>    cat <<-EOF > "${base}.c"
>#include <omp.h>
>int main(void) {
>int nthreads, tid, ret = 0;
>#pragma omp parallel private(nthreads, tid)
>{
>tid = omp_get_thread_num();
>nthreads = omp_get_num_threads(); ret += tid + nthreads;
>}
>return ret;
>}
>EOF
>
>    $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null;
>    local ret=$?;
>    rm -f "${base}"*;
>    return ${ret}
>}
>_test-flag-PROG () 
>{ 
>    local comp=$1;
>    local lang=$2;
>    shift 2;
>    if [[ -z ${comp} ]]; then
>        return 1;
>    fi;
>    if [[ -z $1 ]]; then
>        return 1;
>    fi;
>    comp=($(tc-get${comp}));
>    if ! type -p ${comp[0]} > /dev/null; then
>        return 1;
>    fi;
>    local in_src in_ext cmdline_extra=();
>    case "${lang}" in 
>        c)
>            in_ext='c';
>            in_src='int main(void) { return 0; }';
>            cmdline_extra+=(-xc -c)
>        ;;
>        c++)
>            in_ext='cc';
>            in_src='int main(void) { return 0; }';
>            cmdline_extra+=(-xc++ -c)
>        ;;
>        f77)
>            in_ext='f';
>            in_src='      end';
>            cmdline_extra+=(-xf77 -c)
>        ;;
>        f95)
>            in_ext='f90';
>            in_src='end';
>            cmdline_extra+=(-xf95 -c)
>        ;;
>        c+ld)
>            in_ext='c';
>            in_src='int main(void) { return 0; }';
>            if is-ldflagq -fuse-ld=*; then
>                fuse_ld_value=$(get-flag -fuse-ld=*);
>                cmdline_extra+=(${fuse_ld_value});
>            fi;
>            cmdline_extra+=(-xc)
>        ;;
>    esac;
>    local test_in=${T}/test-flag.${in_ext};
>    local test_out=${T}/test-flag.exe;
>    printf "%s\n" "${in_src}" > "${test_in}" || die "Failed to create '${test_in}'";
>    local cmdline=("${comp[@]}" -Werror "$@" "${cmdline_extra[@]}" "${test_in}" -o "${test_out}");
>    "${cmdline[@]}" &> /dev/null
>}
>_test-flags-PROG () 
>{ 
>    local comp=$1;
>    local flags=();
>    local x;
>    shift;
>    [[ -z ${comp} ]] && return 1;
>    while (( $# )); do
>        case "$1" in 
>            --param | -B)
>                if test-flag-${comp} "$1" "$2"; then
>                    flags+=("$1" "$2");
>                fi;
>                shift 2
>            ;;
>            *)
>                if test-flag-${comp} "$1"; then
>                    flags+=("$1");
>                fi;
>                shift 1
>            ;;
>        esac;
>    done;
>    echo "${flags[*]}";
>    [[ ${#flags[@]} -gt 0 ]]
>}
>add2backlog () 
>{ 
>    local bl=/var/tmp/tb/backlog.1st;
>    if [[ $1 == '@preserved-rebuild' ]]; then
>        sed -i -e "/@preserved-rebuild/d" $bl;
>        sed -i -e "1 i\@preserved-rebuild" $bl;
>    else
>        if [[ $1 =~ ^@ || $1 =~ ^% ]]; then
>            if [[ "$(tail -n 1 $bl)" != "$1" ]]; then
>                echo "$1" >> $bl;
>            fi;
>        else
>            if ! grep -q "^${1}$" $bl; then
>                echo "$1" >> $bl;
>            fi;
>        fi;
>    fi
>}
>declare -fx add2backlog
>all-flag-vars () 
>{ 
>    echo {ADA,C,CPP,CXX,CCAS,F,FC,LD}FLAGS
>}
>append-atomic-flags () 
>{ 
>    local code;
>    read -r -d '' code <<-EOF
>int main(void)
>{
>return 0;
>}
>EOF
>
>    test-compile "c+ld" "${code}" || return;
>    local bytesizes;
>    [[ "${#}" == "0" ]] && bytesizes=("1" "2" "4" "8") || bytesizes="${@}";
>    for bytesize in ${bytesizes[@]};
>    do
>        read -r -d '' code <<-EOF
>#include <stdint.h>
>int main(void)
>{
>uint$((${bytesize} * 8))_t a = 0;
>__atomic_add_fetch(&a, 3, __ATOMIC_RELAXED);
>__atomic_compare_exchange_n(&a, &a, 2, 1, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
>return 0;
>}
>EOF
>
>        test-compile "c+ld" "${code}" && continue
>        test-flags-CCLD "-latomic" &> /dev/null || die "-latomic is required but not supported by $(tc-getCC)";
>        append-libs "-latomic";
>        test-compile "c+ld" "${code}" || die "libatomic does not include an implementation of ${bytesize}-byte atomics for this toolchain";
>        return;
>    done
>}
>append-cflags () 
>{ 
>    [[ $# -eq 0 ]] && return 0;
>    export CFLAGS+=" $*";
>    return 0
>}
>append-cppflags () 
>{ 
>    [[ $# -eq 0 ]] && return 0;
>    export CPPFLAGS+=" $*";
>    return 0
>}
>append-cxxflags () 
>{ 
>    [[ $# -eq 0 ]] && return 0;
>    export CXXFLAGS+=" $*";
>    return 0
>}
>append-fflags () 
>{ 
>    [[ $# -eq 0 ]] && return 0;
>    export FFLAGS+=" $*";
>    export FCFLAGS+=" $*";
>    return 0
>}
>append-flags () 
>{ 
>    [[ $# -eq 0 ]] && return 0;
>    case " $* " in 
>        *' '-[DIU]*)
>            eqawarn 'Please use append-cppflags for preprocessor flags'
>        ;;
>        *' '-L* | *' '-Wl,*)
>            eqawarn 'Please use append-ldflags for linker flags'
>        ;;
>    esac;
>    append-cflags "$@";
>    append-cxxflags "$@";
>    append-fflags "$@";
>    return 0
>}
>append-ldflags () 
>{ 
>    [[ $# -eq 0 ]] && return 0;
>    local flag;
>    for flag in "$@";
>    do
>        [[ ${flag} == -l* ]] && eqawarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS";
>    done;
>    export LDFLAGS="${LDFLAGS} $*";
>    return 0
>}
>append-lfs-flags () 
>{ 
>    [[ $# -ne 0 ]] && die "append-lfs-flags takes no arguments";
>    append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
>}
>append-libs () 
>{ 
>    [[ $# -eq 0 ]] && return 0;
>    local flag;
>    for flag in "$@";
>    do
>        if [[ -z "${flag// }" ]]; then
>            eqawarn "Appending an empty argument to LIBS is invalid! Skipping.";
>            continue;
>        fi;
>        case $flag in 
>            -[lL]*)
>                export LIBS="${LIBS} ${flag}"
>            ;;
>            -*)
>                eqawarn "Appending non-library to LIBS (${flag}); Other linker flags should be passed via LDFLAGS";
>                export LIBS="${LIBS} ${flag}"
>            ;;
>            *)
>                export LIBS="${LIBS} -l${flag}"
>            ;;
>        esac;
>    done;
>    return 0
>}
>build_sphinx () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    [[ ${#} -eq 1 ]] || die "${FUNCNAME} takes 1 arg: <directory>";
>    local dir=${1};
>    sed -i -e 's:^intersphinx_mapping:disabled_&:' "${dir}"/conf.py || die;
>    local command=("${EPYTHON}" -m sphinx.cmd.build);
>    if ! "${EPYTHON}" -c "import sphinx.cmd.build" 2> /dev/null; then
>        command=(sphinx-build);
>    fi;
>    command+=(-b html -d "${dir}"/_build/doctrees "${dir}" "${dir}"/_build/html);
>    echo "${command[@]}" 1>&2;
>    "${command[@]}" || die;
>    HTML_DOCS+=("${dir}/_build/html/.")
>}
>checkEOL () 
>{ 
>    if [[ -f /var/tmp/tb/EOL || -f /var/tmp/tb/STOP ]]; then
>        exit 42;
>    fi
>}
>clang-fullversion () 
>{ 
>    _clang_fullversion '$1.$2.$3' "$@"
>}
>clang-major-version () 
>{ 
>    _clang_fullversion '$1' "$@"
>}
>clang-micro-version () 
>{ 
>    _clang_fullversion '$3' "$@"
>}
>clang-minor-version () 
>{ 
>    _clang_fullversion '$2' "$@"
>}
>clang-version () 
>{ 
>    _clang_fullversion '$1.$2' "$@"
>}
>cmake-utils_src_make () 
>{ 
>    die "cmake-utils_src_make is banned. Use cmake_build instead"
>}
>cmake-utils_use () 
>{ 
>    _cmake_banned_func "" "$@"
>}
>cmake-utils_use_build () 
>{ 
>    _cmake_banned_func BUILD_ "$@"
>}
>cmake-utils_use_disable () 
>{ 
>    _cmake_banned_func DISABLE_ "$@"
>}
>cmake-utils_use_enable () 
>{ 
>    _cmake_banned_func ENABLE_ "$@"
>}
>cmake-utils_use_has () 
>{ 
>    _cmake_banned_func HAVE_ "$@"
>}
>cmake-utils_use_no () 
>{ 
>    _cmake_banned_func NO_ "$@"
>}
>cmake-utils_use_use () 
>{ 
>    _cmake_banned_func USE_ "$@"
>}
>cmake-utils_use_want () 
>{ 
>    _cmake_banned_func WANT_ "$@"
>}
>cmake-utils_use_with () 
>{ 
>    _cmake_banned_func WITH_ "$@"
>}
>cmake-utils_useno () 
>{ 
>    _cmake_banned_func "" "$@"
>}
>cmake_build () 
>{ 
>    debug-print-function ${FUNCNAME} "$@";
>    _cmake_check_build_dir;
>    pushd "${BUILD_DIR}" > /dev/null || die;
>    case ${CMAKE_MAKEFILE_GENERATOR} in 
>        emake)
>            [[ -e Makefile ]] || die "Makefile not found. Error during configure stage.";
>            case ${CMAKE_VERBOSE} in 
>                OFF)
>                    emake "$@"
>                ;;
>                *)
>                    emake VERBOSE=1 "$@"
>                ;;
>            esac
>        ;;
>        ninja)
>            [[ -e build.ninja ]] || die "build.ninja not found. Error during configure stage.";
>            case ${CMAKE_VERBOSE} in 
>                OFF)
>                    NINJA_VERBOSE=OFF eninja "$@"
>                ;;
>                *)
>                    eninja "$@"
>                ;;
>            esac
>        ;;
>    esac;
>    popd > /dev/null || die
>}
>cmake_comment_add_subdirectory () 
>{ 
>    if [[ -z ${1} ]]; then
>        die "${FUNCNAME[0]} must be passed at least one directory name to comment";
>    fi;
>    [[ -e "CMakeLists.txt" ]] || return;
>    local d;
>    for d in $@;
>    do
>        d=${d//\//\\/};
>        sed -e "/add_subdirectory[[:space:]]*([[:space:]]*${d}[[:space:]]*)/I s/^/#DONOTCOMPILE /" -i CMakeLists.txt || die "failed to comment add_subdirectory(${d})";
>    done
>}
>cmake_run_in () 
>{ 
>    if [[ -z ${2} ]]; then
>        die "${FUNCNAME[0]} must be passed at least two arguments";
>    fi;
>    [[ -e ${1} ]] || die "${FUNCNAME[0]}: Nonexistent path: ${1}";
>    pushd ${1} > /dev/null || die;
>    "${@:2}";
>    popd > /dev/null || die
>}
>cmake_src_compile () 
>{ 
>    debug-print-function ${FUNCNAME} "$@";
>    cmake_build "$@"
>}
>cmake_src_configure () 
>{ 
>    debug-print-function ${FUNCNAME} "$@";
>    [[ -n ${_CMAKE_SRC_PREPARE_HAS_RUN} ]] || die "FATAL: cmake_src_prepare has not been run";
>    _cmake_check_build_dir;
>    xdg_environment_reset;
>    local build_rules=${BUILD_DIR}/gentoo_rules.cmake;
>    cat > "${build_rules}" <<-_EOF_ || 
>set(CMAKE_ASM_COMPILE_OBJECT "<CMAKE_ASM_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "ASM compile command" FORCE)
>set(CMAKE_ASM-ATT_COMPILE_OBJECT "<CMAKE_ASM-ATT_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c -x assembler <SOURCE>" CACHE STRING "ASM-ATT compile command" FORCE)
>set(CMAKE_ASM-ATT_LINK_FLAGS "-nostdlib" CACHE STRING "ASM-ATT link flags" FORCE)
>set(CMAKE_C_COMPILE_OBJECT "<CMAKE_C_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "C compile command" FORCE)
>set(CMAKE_CXX_COMPILE_OBJECT "<CMAKE_CXX_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "C++ compile command" FORCE)
>set(CMAKE_Fortran_COMPILE_OBJECT "<CMAKE_Fortran_COMPILER> <DEFINES> <INCLUDES> ${FCFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "Fortran compile command" FORCE)
>_EOF_
> die
>    local myCC=$(tc-getCC) myCXX=$(tc-getCXX) myFC=$(tc-getFC);
>    local toolchain_file=${BUILD_DIR}/gentoo_toolchain.cmake;
>    cat > ${toolchain_file} <<-_EOF_ || 
>set(CMAKE_ASM_COMPILER "${myCC/ /;}")
>set(CMAKE_ASM-ATT_COMPILER "${myCC/ /;}")
>set(CMAKE_C_COMPILER "${myCC/ /;}")
>set(CMAKE_CXX_COMPILER "${myCXX/ /;}")
>set(CMAKE_Fortran_COMPILER "${myFC/ /;}")
>set(CMAKE_AR $(type -P $(tc-getAR)) CACHE FILEPATH "Archive manager" FORCE)
>set(CMAKE_RANLIB $(type -P $(tc-getRANLIB)) CACHE FILEPATH "Archive index generator" FORCE)
>set(CMAKE_SYSTEM_PROCESSOR "${CHOST%%-*}")
>_EOF_
> die
>    local -x ASMFLAGS=${CFLAGS};
>    local -x PKG_CONFIG=$(tc-getPKG_CONFIG);
>    if tc-is-cross-compiler; then
>        local sysname;
>        case "${KERNEL:-linux}" in 
>            Cygwin)
>                sysname="CYGWIN_NT-5.1"
>            ;;
>            HPUX)
>                sysname="HP-UX"
>            ;;
>            linux)
>                sysname="Linux"
>            ;;
>            Winnt)
>                sysname="Windows";
>                cat >> "${toolchain_file}" <<-_EOF_ || 
>set(CMAKE_RC_COMPILER $(tc-getRC))
>_EOF_
> die
>            ;;
>            *)
>                sysname="${KERNEL}"
>            ;;
>        esac
>        cat >> "${toolchain_file}" <<-_EOF_ || 
>set(CMAKE_SYSTEM_NAME "${sysname}")
>_EOF_
> die;
>    fi
>    if [[ ${SYSROOT:-/} != / ]]; then
>        cat >> "${toolchain_file}" <<-_EOF_ || 
>set(CMAKE_SYSROOT "${ESYSROOT}")
>set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
>set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
>set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
>_EOF_
> die;
>    fi
>    if use prefix-guest; then
>        cat >> "${build_rules}" <<-_EOF_ || 
># in Prefix we need rpath and must ensure cmake gets our default linker path
># right ... except for Darwin hosts
>if(NOT APPLE)
>set(CMAKE_SKIP_RPATH OFF CACHE BOOL "" FORCE)
>set(CMAKE_PLATFORM_REQUIRED_RUNTIME_PATH "${EPREFIX}/usr/${CHOST}/lib/gcc;${EPREFIX}/usr/${CHOST}/lib;${EPREFIX}/usr/$(get_libdir);${EPREFIX}/$(get_libdir)" CACHE STRING "" FORCE)
>else()
>set(CMAKE_PREFIX_PATH "${EPREFIX}/usr" CACHE STRING "" FORCE)
>set(CMAKE_MACOSX_RPATH ON CACHE BOOL "" FORCE)
>set(CMAKE_SKIP_BUILD_RPATH OFF CACHE BOOL "" FORCE)
>set(CMAKE_SKIP_RPATH OFF CACHE BOOL "" FORCE)
>set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE CACHE BOOL "" FORCE)
>endif()
>_EOF_
> die;
>    fi
>    local common_config=${BUILD_DIR}/gentoo_common_config.cmake;
>    local libdir=$(get_libdir);
>    cat > "${common_config}" <<-_EOF_ || 
>set(CMAKE_GENTOO_BUILD ON CACHE BOOL "Indicate Gentoo package build")
>set(LIB_SUFFIX ${libdir/lib} CACHE STRING "library path suffix" FORCE)
>set(CMAKE_INSTALL_LIBDIR ${libdir} CACHE PATH "Output directory for libraries")
>set(CMAKE_INSTALL_INFODIR "${EPREFIX}/usr/share/info" CACHE PATH "")
>set(CMAKE_INSTALL_MANDIR "${EPREFIX}/usr/share/man" CACHE PATH "")
>set(CMAKE_USER_MAKE_RULES_OVERRIDE "${build_rules}" CACHE FILEPATH "Gentoo override rules")
>set(CMAKE_INSTALL_DOCDIR "${EPREFIX}/usr/share/doc/${PF}" CACHE PATH "")
>set(BUILD_SHARED_LIBS ON CACHE BOOL "")
>set(Python3_FIND_UNVERSIONED_NAMES FIRST CACHE STRING "")
>set(FETCHCONTENT_FULLY_DISCONNECTED ON CACHE BOOL "")
>set(CMAKE_DISABLE_PRECOMPILE_HEADERS ON CACHE BOOL "")
>_EOF_
> die
>    if [[ -n ${_ECM_ECLASS} ]]; then
>        echo 'set(ECM_DISABLE_QMLPLUGINDUMP ON CACHE BOOL "")' >> "${common_config}" || die;
>    fi;
>    if [[ "${ARCH}" == riscv ]]; then
>        echo 'set(CMAKE_FIND_LIBRARY_CUSTOM_LIB_SUFFIX '"${libdir#lib}"' CACHE STRING "library search suffix" FORCE)' >> "${common_config}" || die;
>    fi;
>    if [[ "${NOCOLOR}" = true || "${NOCOLOR}" = yes ]]; then
>        echo 'set(CMAKE_COLOR_MAKEFILE OFF CACHE BOOL "pretty colors during make" FORCE)' >> "${common_config}" || die;
>    fi;
>    if [[ ${EAPI} != 7 ]]; then
>        echo 'set(CMAKE_INSTALL_ALWAYS 1)' >> "${common_config}" || die;
>    fi;
>    if [[ ${CMAKE_BUILD_TYPE} != Gentoo ]]; then
>        cat >> ${common_config} <<-_EOF_ || 
>set(CMAKE_ASM_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
>set(CMAKE_ASM-ATT_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
>set(CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
>set(CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
>set(CMAKE_Fortran_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
>set(CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
>set(CMAKE_MODULE_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
>set(CMAKE_SHARED_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
>set(CMAKE_STATIC_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
>_EOF_
> die;
>    fi
>    [[ -z ${mycmakeargs} ]] && declare -a mycmakeargs=();
>    local mycmakeargstype=$(declare -p mycmakeargs 2>&-);
>    if [[ "${mycmakeargstype}" != "declare -a mycmakeargs="* ]]; then
>        die "mycmakeargs must be declared as array";
>    fi;
>    local mycmakeargs_local=("${mycmakeargs[@]}");
>    local warn_unused_cli="";
>    if [[ ${CMAKE_WARN_UNUSED_CLI} == no ]]; then
>        warn_unused_cli="--no-warn-unused-cli";
>    fi;
>    local generator_name;
>    case ${CMAKE_MAKEFILE_GENERATOR} in 
>        ninja)
>            generator_name="Ninja"
>        ;;
>        emake)
>            generator_name="Unix Makefiles"
>        ;;
>    esac;
>    local cmakeargs=(${warn_unused_cli} -C "${common_config}" -G "${generator_name}" -DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr" "${mycmakeargs_local[@]}" -DCMAKE_BUILD_TYPE="${CMAKE_BUILD_TYPE}" -DCMAKE_TOOLCHAIN_FILE="${toolchain_file}");
>    eval "local -a MYCMAKEARGS=( ${MYCMAKEARGS} )";
>    cmakeargs+=("${MYCMAKEARGS[@]}");
>    if [[ -n "${CMAKE_EXTRA_CACHE_FILE}" ]]; then
>        cmakeargs+=(-C "${CMAKE_EXTRA_CACHE_FILE}");
>    fi;
>    pushd "${BUILD_DIR}" > /dev/null || die;
>    debug-print "${LINENO} ${ECLASS} ${FUNCNAME}: mycmakeargs is ${mycmakeargs_local[*]}";
>    echo "${CMAKE_BINARY}" "${cmakeargs[@]}" "${CMAKE_USE_DIR}";
>    "${CMAKE_BINARY}" "${cmakeargs[@]}" "${CMAKE_USE_DIR}" || die "cmake failed";
>    popd > /dev/null || die
>}
>cmake_src_install () 
>{ 
>    debug-print-function ${FUNCNAME} "$@";
>    DESTDIR="${D}" cmake_build install "$@";
>    if [[ ${EAPI} == 7 ]]; then
>        pushd "${S}" > /dev/null || die;
>        einstalldocs;
>        popd > /dev/null || die;
>    else
>        pushd "${CMAKE_USE_DIR}" > /dev/null || die;
>        einstalldocs;
>        popd > /dev/null || die;
>    fi
>}
>cmake_src_prepare () 
>{ 
>    debug-print-function ${FUNCNAME} "$@";
>    if [[ ${EAPI} == 7 ]]; then
>        pushd "${S}" > /dev/null || die;
>    fi;
>    _cmake_check_build_dir;
>    default_src_prepare;
>    if [[ ! -e ${CMAKE_USE_DIR}/CMakeLists.txt ]]; then
>        eerror "Unable to locate CMakeLists.txt under:";
>        eerror "\"${CMAKE_USE_DIR}/CMakeLists.txt\"";
>        eerror "Consider not inheriting the cmake eclass.";
>        die "FATAL: Unable to find CMakeLists.txt";
>    fi;
>    local modules_list;
>    if [[ ${EAPI} == 7 && $(declare -p CMAKE_REMOVE_MODULES_LIST) != "declare -a"* ]]; then
>        modules_list=(${CMAKE_REMOVE_MODULES_LIST});
>    else
>        modules_list=("${CMAKE_REMOVE_MODULES_LIST[@]}");
>    fi;
>    local name;
>    for name in "${modules_list[@]}";
>    do
>        if [[ ${EAPI} == 7 ]]; then
>            find "${S}" -name ${name}.cmake -exec rm -v {} + || die;
>        else
>            find -name "${name}.cmake" -exec rm -v {} + || die;
>        fi;
>    done;
>    _cmake_modify-cmakelists;
>    if [[ ${EAPI} == 7 ]]; then
>        popd > /dev/null || die;
>    fi;
>    if [[ -n ${CMAKE_QA_SRC_DIR_READONLY} && ! -n ${CMAKE_IN_SOURCE_BUILD} ]]; then
>        if [[ ${EAPI} == 7 ]]; then
>            chmod -R a-w "${S}";
>        else
>            chmod -R a-w "${CMAKE_USE_DIR}";
>        fi;
>    fi;
>    _CMAKE_SRC_PREPARE_HAS_RUN=1
>}
>cmake_src_test () 
>{ 
>    debug-print-function ${FUNCNAME} "$@";
>    _cmake_check_build_dir;
>    pushd "${BUILD_DIR}" > /dev/null || die;
>    [[ -e CTestTestfile.cmake ]] || { 
>        echo "No tests found. Skipping.";
>        return 0
>    };
>    [[ -n ${TEST_VERBOSE} ]] && myctestargs+=(--extra-verbose --output-on-failure);
>    [[ -n ${CMAKE_SKIP_TESTS} ]] && myctestargs+=(-E '('$(IFS='|'; echo "${CMAKE_SKIP_TESTS[*]}")')');
>    set -- ctest -j "$(makeopts_jobs "${MAKEOPTS}" 999)" --test-load "$(makeopts_loadavg)" "${myctestargs[@]}" "$@";
>    echo "$@" 1>&2;
>    if "$@"; then
>        einfo "Tests succeeded.";
>        popd > /dev/null || die;
>        return 0;
>    else
>        if [[ -n "${CMAKE_YES_I_WANT_TO_SEE_THE_TEST_LOG}" ]]; then
>            eerror "Tests failed. Test log ${BUILD_DIR}/Testing/Temporary/LastTest.log follows:";
>            eerror "--START TEST LOG--------------------------------------------------------------";
>            cat "${BUILD_DIR}/Testing/Temporary/LastTest.log";
>            eerror "--END TEST LOG----------------------------------------------------------------";
>            die "Tests failed.";
>        else
>            die "Tests failed. When you file a bug, please attach the following file: \n\t${BUILD_DIR}/Testing/Temporary/LastTest.log";
>        fi;
>        popd > /dev/null || die;
>        return 1;
>    fi
>}
>cmake_use_find_package () 
>{ 
>    debug-print-function ${FUNCNAME} "$@";
>    if [[ "$#" != 2 || -z $1 ]]; then
>        die "Usage: cmake_use_find_package <USE flag> <package name>";
>    fi;
>    echo "-DCMAKE_DISABLE_FIND_PACKAGE_$2=$(use $1 && echo OFF || echo ON)"
>}
>comment_add_subdirectory () 
>{ 
>    die "comment_add_subdirectory is banned. Use cmake_comment_add_subdirectory instead"
>}
>eapply () 
>{ 
>    local failed patch_cmd=patch;
>    local -x LC_COLLATE=POSIX;
>    type -P gpatch > /dev/null && patch_cmd=gpatch;
>    function _eapply_patch () 
>    { 
>        local f=${1};
>        local prefix=${2};
>        ebegin "${prefix:-Applying }${f##*/}";
>        local all_opts=(-p1 -f -g0 --no-backup-if-mismatch "${patch_options[@]}");
>        if ${patch_cmd} "${all_opts[@]}" --dry-run -s -F0 < "${f}" &> /dev/null; then
>            all_opts+=(-s -F0);
>        fi;
>        ${patch_cmd} "${all_opts[@]}" < "${f}";
>        failed=${?};
>        if ! eend "${failed}"; then
>            __helpers_die "patch -p1 ${patch_options[*]} failed with ${f}";
>        fi
>    };
>    local patch_options=() files=();
>    local i found_doublehyphen;
>    for ((i = 1; i <= ${#@}; ++i ))
>    do
>        if [[ ${@:i:1} == -- ]]; then
>            patch_options=("${@:1:i-1}");
>            files=("${@:i+1}");
>            found_doublehyphen=1;
>            break;
>        fi;
>    done;
>    if [[ -z ${found_doublehyphen} ]]; then
>        for ((i = 1; i <= ${#@}; ++i ))
>        do
>            if [[ ${@:i:1} != -* ]]; then
>                patch_options=("${@:1:i-1}");
>                files=("${@:i}");
>                break;
>            fi;
>        done;
>        for i in "${files[@]}";
>        do
>            if [[ ${i} == -* ]]; then
>                die "eapply: all options must be passed before non-options";
>            fi;
>        done;
>    fi;
>    if [[ ${#files[@]} -eq 0 ]]; then
>        die "eapply: no files specified";
>    fi;
>    local f;
>    for f in "${files[@]}";
>    do
>        if [[ -d ${f} ]]; then
>            function _eapply_get_files () 
>            { 
>                local LC_ALL=POSIX;
>                local prev_shopt=$(shopt -p nullglob);
>                shopt -s nullglob;
>                local f;
>                for f in "${1}"/*;
>                do
>                    if [[ ${f} == *.diff || ${f} == *.patch ]]; then
>                        files+=("${f}");
>                    fi;
>                done;
>                ${prev_shopt}
>            };
>            local files=();
>            _eapply_get_files "${f}";
>            [[ ${#files[@]} -eq 0 ]] && die "No *.{patch,diff} files in directory ${f}";
>            einfo "Applying patches from ${f} ...";
>            local f2;
>            for f2 in "${files[@]}";
>            do
>                _eapply_patch "${f2}" '  ';
>                [[ ${failed} -ne 0 ]] && return "${failed}";
>            done;
>        else
>            _eapply_patch "${f}";
>            [[ ${failed} -ne 0 ]] && return "${failed}";
>        fi;
>    done;
>    return 0
>}
>eapply_user () 
>{ 
>    [[ ${EBUILD_PHASE} == prepare ]] || die "eapply_user() called during invalid phase: ${EBUILD_PHASE}";
>    local tagfile=${T}/.portage_user_patches_applied;
>    [[ -f ${tagfile} ]] && return;
>    >> "${tagfile}";
>    local basedir=${PORTAGE_CONFIGROOT%/}/etc/portage/patches;
>    local columns=${COLUMNS:-0};
>    [[ ${columns} == 0 ]] && columns=$(set -- $( ( stty size < /dev/tty ) 2> /dev/null || echo 24 80); echo $2);
>    (( columns > 0 )) || (( columns = 80 ));
>    local applied d f;
>    local -A _eapply_user_patches;
>    local prev_shopt=$(shopt -p nullglob);
>    shopt -s nullglob;
>    for d in "${basedir}"/${CATEGORY}/{${P}-${PR},${P},${PN}}{:${SLOT%/*},};
>    do
>        for f in "${d}"/*;
>        do
>            if [[ ( ${f} == *.diff || ${f} == *.patch ) && -z ${_eapply_user_patches[${f##*/}]} ]]; then
>                _eapply_user_patches[${f##*/}]=${f};
>            fi;
>        done;
>    done;
>    if [[ ${#_eapply_user_patches[@]} -gt 0 ]]; then
>        while read -r -d '' f; do
>            f=${_eapply_user_patches[${f}]};
>            if [[ -s ${f} ]]; then
>                if [[ -z ${applied} ]]; then
>                    einfo "${PORTAGE_COLOR_INFO}$(for ((column = 0; column < ${columns} - 3; column++))
>do
>    echo -n =;
>done)${PORTAGE_COLOR_NORMAL}";
>                    einfo "Applying user patches from ${basedir} ...";
>                fi;
>                eapply "${f}";
>                applied=1;
>            fi;
>        done < <(printf -- '%s\0' "${!_eapply_user_patches[@]}" | LC_ALL=C sort -z);
>    fi;
>    ${prev_shopt};
>    if [[ -n ${applied} ]]; then
>        einfo "User patches applied.";
>        einfo "${PORTAGE_COLOR_INFO}$(for ((column = 0; column < ${columns} - 3; column++))
>do
>    echo -n =;
>done)${PORTAGE_COLOR_NORMAL}";
>    fi
>}
>econf_build () 
>{ 
>    local CBUILD=${CBUILD:-${CHOST}};
>    function econf_env () 
>    { 
>        CHOST=${CBUILD} econf "$@"
>    };
>    tc-env_build econf_env "$@"
>}
>einstalldocs () 
>{ 
>    ( if [[ $(declare -p DOCS 2> /dev/null) != *=* ]]; then
>        local d;
>        for d in README* ChangeLog AUTHORS NEWS TODO CHANGES THANKS BUGS FAQ CREDITS CHANGELOG;
>        do
>            [[ -f ${d} && -s ${d} ]] && docinto / && dodoc "${d}";
>        done;
>    else
>        if ___is_indexed_array_var DOCS; then
>            [[ ${#DOCS[@]} -gt 0 ]] && docinto / && dodoc -r "${DOCS[@]}";
>        else
>            [[ -n ${DOCS} ]] && docinto / && dodoc -r ${DOCS};
>        fi;
>    fi );
>    ( if ___is_indexed_array_var HTML_DOCS; then
>        [[ ${#HTML_DOCS[@]} -gt 0 ]] && docinto html && dodoc -r "${HTML_DOCS[@]}";
>    else
>        [[ -n ${HTML_DOCS} ]] && docinto html && dodoc -r ${HTML_DOCS};
>    fi )
>}
>eninja () 
>{ 
>    case "${NINJA}" in 
>        ninja | samu)
>
>        ;;
>        *)
>            ewarn "Unknown value '${NINJA}' for \${NINJA}"
>        ;;
>    esac;
>    local v;
>    case "${NINJA_VERBOSE}" in 
>        OFF)
>
>        ;;
>        *)
>            v="-v"
>        ;;
>    esac;
>    set -- "${NINJA}" ${v} $(get_NINJAOPTS) "$@";
>    echo "$@" 1>&2;
>    "$@" || die -n "${*} failed"
>}
>epytest () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    _python_check_EPYTHON;
>    _python_check_occluded_packages;
>    local color=yes;
>    [[ -n ${NO_COLOR} ]] && color=no;
>    local args=(-vv -ra -l -Wdefault "--color=${color}" -o console_output_style=count -o tmp_path_retention_count=0 -o tmp_path_retention_policy=failed);
>    if [[ ! -n ${PYTEST_DISABLE_PLUGIN_AUTOLOAD} ]]; then
>        args+=(-p no:cov -p no:flake8 -p no:flakes -p no:pylint -p no:markdown -p no:sugar -p no:xvfb -p no:pytest-describe -p no:plus -p no:tavern -p no:salt-factories);
>    fi;
>    if [[ -n ${EPYTEST_TIMEOUT} ]]; then
>        if [[ ${PYTEST_PLUGINS} != *pytest_timeout* ]]; then
>            args+=(-p timeout);
>        fi;
>        args+=("--timeout=${EPYTEST_TIMEOUT}");
>    fi;
>    if [[ -n ${EPYTEST_XDIST} ]]; then
>        local jobs=${EPYTEST_JOBS:-$(makeopts_jobs)};
>        if [[ ${jobs} -gt 1 ]]; then
>            if [[ ${PYTEST_PLUGINS} != *xdist.plugin* ]]; then
>                args+=(-p xdist);
>            fi;
>            args+=(-n "${jobs}" --dist=worksteal);
>        fi;
>    fi;
>    local x;
>    for x in "${EPYTEST_DESELECT[@]}";
>    do
>        args+=(--deselect "${x}");
>    done;
>    for x in "${EPYTEST_IGNORE[@]}";
>    do
>        args+=(--ignore "${x}");
>    done;
>    set -- "${EPYTHON}" -m pytest "${args[@]}" "${@}";
>    echo "${@}" 1>&2;
>    "${@}" || die -n "pytest failed with ${EPYTHON}";
>    local ret=${?};
>    rm -rf .hypothesis .pytest_cache || die;
>    if [[ -n ${BUILD_DIR} && -d ${BUILD_DIR} ]]; then
>        find "${BUILD_DIR}" -name '*-pytest-*.pyc' -delete || die;
>    fi;
>    return ${ret}
>}
>eunittest () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    _python_check_EPYTHON;
>    _python_check_occluded_packages;
>    local runner=unittest;
>    if _python_impl_matches "${EPYTHON}" 3.{9..11}; then
>        runner=unittest_or_fail;
>    fi;
>    set -- "${EPYTHON}" -m "${runner}" discover -v "${@}";
>    echo "${@}" 1>&2;
>    "${@}" || die -n "Tests failed with ${EPYTHON}";
>    return ${?}
>}
>filter-flags () 
>{ 
>    _filter-hardened "$@";
>    local v;
>    for v in $(all-flag-vars);
>    do
>        _filter-var ${v} "$@";
>    done;
>    return 0
>}
>filter-ldflags () 
>{ 
>    _filter-var LDFLAGS "$@";
>    return 0
>}
>filter-lfs-flags () 
>{ 
>    [[ $# -ne 0 ]] && die "filter-lfs-flags takes no arguments";
>    filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_TIME_BITS=64
>}
>filter-lto () 
>{ 
>    [[ $# -ne 0 ]] && die "filter-lto takes no arguments";
>    filter-flags '-flto*' -fwhole-program-vtables '-fsanitize=cfi*'
>}
>filter-mfpmath () 
>{ 
>    local orig_mfpmath new_math prune_math;
>    orig_mfpmath=$(get-flag -mfpmath);
>    new_math=$(get-flag mfpmath);
>    new_math=${new_math/both/387,sse};
>    new_math=" ${new_math//[,+]/ } ";
>    prune_math="";
>    for prune_math in "$@";
>    do
>        new_math=${new_math/ ${prune_math} / };
>    done;
>    new_math=$(echo ${new_math});
>    new_math=${new_math// /,};
>    if [[ -z ${new_math} ]]; then
>        filter-flags ${orig_mfpmath};
>    else
>        replace-flags ${orig_mfpmath} -mfpmath=${new_math};
>    fi;
>    return 0
>}
>gcc-fullversion () 
>{ 
>    _gcc_fullversion '$1.$2.$3' "$@"
>}
>gcc-major-version () 
>{ 
>    _gcc_fullversion '$1' "$@"
>}
>gcc-micro-version () 
>{ 
>    _gcc_fullversion '$3' "$@"
>}
>gcc-minor-version () 
>{ 
>    _gcc_fullversion '$2' "$@"
>}
>gcc-specs-directive () 
>{ 
>    local directive subdname subdirective;
>    directive="$(_gcc-specs-directive_raw $1)";
>    while [[ ${directive} == *%$*$* ]]; do
>        subdname=${directive/*%$};
>        subdname=${subdname/$*};
>        subdirective="$(_gcc-specs-directive_raw ${subdname})";
>        directive="${directive//\%(${subdname})/${subdirective}}";
>    done;
>    echo "${directive}";
>    return 0
>}
>gcc-specs-nostrict () 
>{ 
>    local directive;
>    directive=$(gcc-specs-directive cc1);
>    [[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
>}
>gcc-specs-now () 
>{ 
>    local directive;
>    directive=$(gcc-specs-directive link_command);
>    [[ "${directive/\{!nonow:}" != "${directive}" ]]
>}
>gcc-specs-pie () 
>{ 
>    local directive;
>    directive=$(gcc-specs-directive cc1);
>    [[ "${directive/\{!nopie:}" != "${directive}" ]]
>}
>gcc-specs-relro () 
>{ 
>    local directive;
>    directive=$(gcc-specs-directive link_command);
>    [[ "${directive/\{!norelro:}" != "${directive}" ]]
>}
>gcc-specs-ssp () 
>{ 
>    local directive;
>    directive=$(gcc-specs-directive cc1);
>    [[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
>}
>gcc-specs-ssp-to-all () 
>{ 
>    local directive;
>    directive=$(gcc-specs-directive cc1);
>    [[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
>}
>gcc-specs-stack-check () 
>{ 
>    local directive;
>    directive=$(gcc-specs-directive cc1);
>    [[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
>}
>gcc-version () 
>{ 
>    _gcc_fullversion '$1.$2' "$@"
>}
>gen_usr_ldscript () 
>{ 
>    ewarn "${FUNCNAME}: Please migrate to usr-ldscript.eclass";
>    local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname);
>    [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/;
>    tc-is-static-only && return;
>    if [[ $(type -t multilib_is_native_abi) == "function" ]]; then
>        multilib_is_native_abi || return 0;
>    fi;
>    case ${CTARGET:-${CHOST}} in 
>        *-darwin*)
>
>        ;;
>        *-android*)
>            return 0
>        ;;
>        *linux*)
>            use prefix && return 0
>        ;;
>        *)
>            return 0
>        ;;
>    esac;
>    dodir /usr/${libdir};
>    if [[ $1 == "-a" ]]; then
>        auto=true;
>        shift;
>        dodir /${libdir};
>    fi;
>    local flags=(${CFLAGS} ${LDFLAGS} -Wl,--verbose);
>    if $(tc-getLD) --version | grep -q 'GNU gold'; then
>        local d="${T}/bfd-linker";
>        mkdir -p "${d}";
>        ln -sf $(type -P ${CHOST}-ld.bfd) "${d}"/ld;
>        flags+=(-B"${d}");
>    fi;
>    output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("$[^"]*$",.*/\1/p');
>    [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )";
>    for lib in "$@";
>    do
>        local tlib;
>        if ${auto}; then
>            lib="lib${lib}${suffix}";
>        else
>            [[ -r ${ED}/${libdir}/${lib} ]] || continue;
>        fi;
>        case ${CTARGET:-${CHOST}} in 
>            *-darwin*)
>                if ${auto}; then
>                    tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib});
>                else
>                    tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib});
>                fi;
>                [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}";
>                tlib=${tlib##*/};
>                if ${auto}; then
>                    mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die;
>                    if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]]; then
>                        mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die;
>                    fi;
>                    rm -f "${ED}"/${libdir}/${lib};
>                fi;
>                if [[ ! -w "${ED}/${libdir}/${tlib}" ]]; then
>                    chmod u+w "${ED}${libdir}/${tlib}";
>                    local nowrite=yes;
>                fi;
>                install_name_tool -id "${EPREFIX}"/${libdir}/${tlib} "${ED}"/${libdir}/${tlib} || die "install_name_tool failed";
>                [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}";
>                pushd "${ED}/usr/${libdir}" > /dev/null;
>                ln -snf "../../${libdir}/${tlib}" "${lib}";
>                popd > /dev/null
>            ;;
>            *)
>                if ${auto}; then
>                    tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib});
>                    [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}";
>                    mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die;
>                    if [[ ${tlib} != ${lib}* ]]; then
>                        mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die;
>                    fi;
>                    rm -f "${ED}"/${libdir}/${lib};
>                else
>                    tlib=${lib};
>                fi;
>                cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
>/* GNU ld script
>   Since Gentoo has critical dynamic libraries in /lib, and the static versions
>   in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
>   run into linking problems.  This "fake" dynamic lib is a linker script that
>   redirects the linker to the real lib.  And yes, this works in the cross-
>   compiling scenario as the sysroot-ed linker will prepend the real path.
>
>   See bug https://bugs.gentoo.org/4411 for more info.
> */
>${output_format}
>GROUP ( ${EPREFIX}/${libdir}/${tlib} )
>END_LDSCRIPT
>
>            ;;
>        esac
>        fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}";
>    done
>}
>get-flag () 
>{ 
>    [[ $# -ne 1 ]] && die "usage: <flag>";
>    local f var findflag="$1";
>    for var in $(all-flag-vars);
>    do
>        for f in ${!var};
>        do
>            if [ "${f/${findflag}}" != "${f}" ]; then
>                printf "%s\n" "${f/-${findflag}=}";
>                return 0;
>            fi;
>        done;
>    done;
>    return 1
>}
>get_NINJAOPTS () 
>{ 
>    if [[ -z ${NINJAOPTS+set} ]]; then
>        NINJAOPTS="-j$(get_makeopts_jobs 999) -l$(get_makeopts_loadavg 0)";
>    fi;
>    echo "${NINJAOPTS}"
>}
>get_abi_CFLAGS () 
>{ 
>    get_abi_var CFLAGS "$@"
>}
>get_abi_CHOST () 
>{ 
>    get_abi_var CHOST "$@"
>}
>get_abi_CTARGET () 
>{ 
>    get_abi_var CTARGET "$@"
>}
>get_abi_FAKE_TARGETS () 
>{ 
>    get_abi_var FAKE_TARGETS "$@"
>}
>get_abi_LDFLAGS () 
>{ 
>    get_abi_var LDFLAGS "$@"
>}
>get_abi_LIBDIR () 
>{ 
>    get_abi_var LIBDIR "$@"
>}
>get_abi_var () 
>{ 
>    local flag=$1;
>    local abi=${2:-${ABI:-${DEFAULT_ABI:-default}}};
>    local var="${flag}_${abi}";
>    echo ${!var}
>}
>get_all_abis () 
>{ 
>    local x order="" mvar dvar;
>    mvar="MULTILIB_ABIS";
>    dvar="DEFAULT_ABI";
>    if [[ -n $1 ]]; then
>        mvar="$1_${mvar}";
>        dvar="$1_${dvar}";
>    fi;
>    if [[ -z ${!mvar} ]]; then
>        echo "default";
>        return 0;
>    fi;
>    for x in ${!mvar};
>    do
>        if [[ ${x} != ${!dvar} ]]; then
>            order="${order:+${order} }${x}";
>        fi;
>    done;
>    order="${order:+${order} }${!dvar}";
>    echo ${order};
>    return 0
>}
>get_all_libdirs () 
>{ 
>    local libdirs abi;
>    for abi in ${MULTILIB_ABIS};
>    do
>        libdirs+=" $(get_abi_LIBDIR ${abi})";
>    done;
>    [[ " ${libdirs} " != *" lib "* ]] && libdirs+=" lib";
>    echo "${libdirs}"
>}
>get_exeext () 
>{ 
>    case ${CHOST} in 
>        mingw* | *-mingw*)
>            echo ".exe"
>        ;;
>    esac
>}
>get_install_abis () 
>{ 
>    local x order="";
>    if [[ -z ${MULTILIB_ABIS} ]]; then
>        echo "default";
>        return 0;
>    fi;
>    if [[ ${EMULTILIB_PKG} == "true" ]]; then
>        for x in ${MULTILIB_ABIS};
>        do
>            if [[ ${x} != "${DEFAULT_ABI}" ]]; then
>                has ${x} ${ABI_DENY} || order="${order} ${x}";
>            fi;
>        done;
>        has ${DEFAULT_ABI} ${ABI_DENY} || order="${order} ${DEFAULT_ABI}";
>        if [[ -n ${ABI_ALLOW} ]]; then
>            local ordera="";
>            for x in ${order};
>            do
>                if has ${x} ${ABI_ALLOW}; then
>                    ordera="${ordera} ${x}";
>                fi;
>            done;
>            order=${ordera};
>        fi;
>    else
>        order=${DEFAULT_ABI};
>    fi;
>    if [[ -z ${order} ]]; then
>        die "The ABI list is empty.  Are you using a proper multilib profile?  Perhaps your USE flags or MULTILIB_ABIS are too restrictive for this package.";
>    fi;
>    echo ${order};
>    return 0
>}
>get_libdir () 
>{ 
>    local libdir_var="LIBDIR_${ABI}";
>    local libdir="lib";
>    [[ -n ${ABI} && -n ${!libdir_var} ]] && libdir=${!libdir_var};
>    echo "${libdir}"
>}
>get_libname () 
>{ 
>    local libname;
>    local ver=$1;
>    case ${CHOST} in 
>        mingw* | *-mingw*)
>            libname="dll"
>        ;;
>        *-darwin*)
>            libname="dylib"
>        ;;
>        *)
>            libname="so"
>        ;;
>    esac;
>    if [[ -z $* ]]; then
>        echo ".${libname}";
>    else
>        for ver in "$@";
>        do
>            case ${CHOST} in 
>                *-darwin*)
>                    echo ".${ver}.${libname}"
>                ;;
>                *)
>                    echo ".${libname}.${ver}"
>                ;;
>            esac;
>        done;
>    fi
>}
>get_makeopts_jobs () 
>{ 
>    makeopts_jobs "$(_get_all_makeopts)" "${1:-1}"
>}
>get_makeopts_loadavg () 
>{ 
>    makeopts_loadavg "$(_get_all_makeopts)" "${1:-999}"
>}
>get_modname () 
>{ 
>    local modname;
>    local ver=$1;
>    case ${CHOST} in 
>        *-darwin*)
>            modname="bundle"
>        ;;
>        *)
>            modname="so"
>        ;;
>    esac;
>    echo ".${modname}"
>}
>get_nproc () 
>{ 
>    local nproc;
>    if type -P nproc &> /dev/null; then
>        nproc=$(nproc);
>    fi;
>    if [[ -z ${nproc} ]] && type -P sysctl &> /dev/null; then
>        nproc=$(sysctl -n hw.ncpu 2> /dev/null);
>    fi;
>    if [[ -z ${nproc} ]] && type -P python &> /dev/null; then
>        nproc=$(python -c 'import multiprocessing; print(multiprocessing.cpu_count());' 2> /dev/null);
>    fi;
>    if [[ -n ${nproc} ]]; then
>        echo "${nproc}";
>    else
>        echo "${1:-1}";
>    fi
>}
>has_multilib_profile () 
>{ 
>    [ -n "${MULTILIB_ABIS}" -a "${MULTILIB_ABIS}" != "${MULTILIB_ABIS/ /}" ]
>}
>in_iuse () 
>{ 
>    local use=${1};
>    if [[ -z "${use}" ]]; then
>        echo "!!! in_iuse() called without a parameter." 1>&2;
>        echo "!!! in_iuse <USEFLAG>" 1>&2;
>        die "in_iuse() called without a parameter";
>    fi;
>    local liuse=(${IUSE_EFFECTIVE});
>    has "${use}" "${liuse[@]#[+-]}"
>}
>is-flag () 
>{ 
>    is-flagq "$@" && echo true
>}
>is-flagq () 
>{ 
>    [[ -n $2 ]] && die "Usage: is-flag <flag>";
>    local var;
>    for var in $(all-flag-vars);
>    do
>        _is_flagq ${var} "$1" && return 0;
>    done;
>    return 1
>}
>is-ldflag () 
>{ 
>    is-ldflagq "$@" && echo true
>}
>is-ldflagq () 
>{ 
>    [[ -n $2 ]] && die "Usage: is-ldflag <flag>";
>    _is_flagq LDFLAGS $1
>}
>is_final_abi () 
>{ 
>    has_multilib_profile || return 0;
>    set -- $(get_install_abis);
>    local LAST_ABI=$#;
>    [[ ${!LAST_ABI} == ${ABI} ]]
>}
>makeopts_jobs () 
>{ 
>    [[ $# -eq 0 ]] && set -- "$(_get_all_makeopts)";
>    local jobs=$(echo " $* " | sed -r -n -e 's:.*[[:space:]](-[a-z]*j|--jobs[=[:space:]])[[:space:]]*([0-9]+).*:\2:p' -e "s:.*[[:space:]](-[a-z]*j|--jobs)[[:space:]].*:${2:-$(( $(get_nproc) + 1 ))}:p");
>    echo ${jobs:-1}
>}
>makeopts_loadavg () 
>{ 
>    [[ $# -eq 0 ]] && set -- "$(_get_all_makeopts)";
>    local lavg=$(echo " $* " | sed -r -n -e 's:.*[[:space:]](-[a-z]*l|--(load-average|max-load)[=[:space:]])[[:space:]]*([0-9]+(\.[0-9]+)?)[[:space:]].*:\3:p' -e "s:.*[[:space:]](-[a-z]*l|--(load-average|max-load))[[:space:]].*:${2:-999}:p");
>    echo ${lavg:-${2:-999}}
>}
>ml () 
>{ 
>    eval "$($LMOD_DIR/ml_cmd "$@")"
>}
>declare -fx ml
>module () 
>{ 
>    if [ -z "${LMOD_SH_DBG_ON+x}" ]; then
>        case "$-" in 
>            *v*x*)
>                __lmod_sh_dbg='vx'
>            ;;
>            *v*)
>                __lmod_sh_dbg='v'
>            ;;
>            *x*)
>                __lmod_sh_dbg='x'
>            ;;
>        esac;
>    fi;
>    if [ -n "${__lmod_sh_dbg:-}" ]; then
>        set +$__lmod_sh_dbg;
>        echo "Shell debugging temporarily silenced: export LMOD_SH_DBG_ON=1 for Lmod's output" 1>&2;
>    fi;
>    eval "$($LMOD_CMD shell "$@")" && eval "$(${LMOD_SETTARG_CMD:-:} -s sh)";
>    __lmod_my_status=$?;
>    if [ -n "${__lmod_sh_dbg:-}" ]; then
>        echo "Shell debugging restarted" 1>&2;
>        set -$__lmod_sh_dbg;
>    fi;
>    unset __lmod_sh_dbg;
>    return $__lmod_my_status
>}
>declare -fx module
>multilib_env () 
>{ 
>    local CTARGET=${1:-${CTARGET}};
>    local cpu=${CTARGET%%*-};
>    if [[ ${CTARGET} = *-musl* ]]; then
>        : "${MULTILIB_ABIS=default}";
>        : "${DEFAULT_ABI=default}";
>        export MULTILIB_ABIS DEFAULT_ABI;
>        return;
>    fi;
>    case ${cpu} in 
>        aarch64*)
>            export CFLAGS_arm=${CFLAGS_arm-};
>            case ${cpu} in 
>                aarch64*be)
>                    export CHOST_arm="armv8b-${CTARGET#*-}"
>                ;;
>                *)
>                    export CHOST_arm="armv8l-${CTARGET#*-}"
>                ;;
>            esac;
>            CHOST_arm=${CHOST_arm/%-gnu/-gnueabi};
>            export CTARGET_arm=${CHOST_arm};
>            export LIBDIR_arm="lib";
>            export CFLAGS_arm64=${CFLAGS_arm64-};
>            export CHOST_arm64=${CTARGET};
>            export CTARGET_arm64=${CHOST_arm64};
>            export LIBDIR_arm64="lib64";
>            : "${MULTILIB_ABIS=arm64}";
>            : "${DEFAULT_ABI=arm64}"
>        ;;
>        x86_64*)
>            export CFLAGS_x86=${CFLAGS_x86--m32};
>            export CHOST_x86=${CTARGET/x86_64/i686};
>            CHOST_x86=${CHOST_x86/%-gnux32/-gnu};
>            export CTARGET_x86=${CHOST_x86};
>            if [[ ${SYMLINK_LIB} == "yes" ]]; then
>                export LIBDIR_x86="lib32";
>            else
>                export LIBDIR_x86="lib";
>            fi;
>            export CFLAGS_amd64=${CFLAGS_amd64--m64};
>            export CHOST_amd64=${CTARGET/%-gnux32/-gnu};
>            export CTARGET_amd64=${CHOST_amd64};
>            export LIBDIR_amd64="lib64";
>            export CFLAGS_x32=${CFLAGS_x32--mx32};
>            export CHOST_x32=${CTARGET/%-gnu/-gnux32};
>            export CTARGET_x32=${CHOST_x32};
>            export LIBDIR_x32="libx32";
>            case ${CTARGET} in 
>                *-gnux32)
>                    : "${MULTILIB_ABIS=x32 amd64 x86}";
>                    : "${DEFAULT_ABI=x32}"
>                ;;
>                *)
>                    : "${MULTILIB_ABIS=amd64 x86}";
>                    : "${DEFAULT_ABI=amd64}"
>                ;;
>            esac
>        ;;
>        loongarch64*)
>            export CFLAGS_lp64d=${CFLAGS_lp64d--mabi=lp64d};
>            export CHOST_lp64d=${CTARGET};
>            export CTARGET_lp64d=${CTARGET};
>            export LIBDIR_lp64d=${LIBDIR_lp64d-lib64};
>            : "${MULTILIB_ABIS=lp64d}";
>            : "${DEFAULT_ABI=lp64d}"
>        ;;
>        mips64* | mipsisa64*)
>            export CFLAGS_o32=${CFLAGS_o32--mabi=32};
>            export CHOST_o32=${CTARGET/mips64/mips};
>            export CHOST_o32=${CHOST_o32/mipsisa64/mipsisa32};
>            export CTARGET_o32=${CHOST_o32};
>            export LIBDIR_o32="lib";
>            export CFLAGS_n32=${CFLAGS_n32--mabi=n32};
>            export CHOST_n32=${CTARGET};
>            export CTARGET_n32=${CHOST_n32};
>            export LIBDIR_n32="lib32";
>            export CFLAGS_n64=${CFLAGS_n64--mabi=64};
>            export CHOST_n64=${CTARGET};
>            export CTARGET_n64=${CHOST_n64};
>            export LIBDIR_n64="lib64";
>            : "${MULTILIB_ABIS=n64 n32 o32}";
>            : "${DEFAULT_ABI=n32}"
>        ;;
>        powerpc64*)
>            export CFLAGS_ppc=${CFLAGS_ppc--m32};
>            export CHOST_ppc=${CTARGET/powerpc64/powerpc};
>            export CTARGET_ppc=${CHOST_ppc};
>            export LIBDIR_ppc="lib";
>            export CFLAGS_ppc64=${CFLAGS_ppc64--m64};
>            export CHOST_ppc64=${CTARGET};
>            export CTARGET_ppc64=${CHOST_ppc64};
>            export LIBDIR_ppc64="lib64";
>            : "${MULTILIB_ABIS=ppc64 ppc}";
>            : "${DEFAULT_ABI=ppc64}"
>        ;;
>        riscv64*)
>            : "${MULTILIB_ABIS=lp64d lp64 ilp32d ilp32}";
>            : "${DEFAULT_ABI=lp64d}";
>            local _libdir_riscvdefaultabi_variable="LIBDIR_${DEFAULT_ABI}";
>            local _libdir_riscvdefaultabi=${!_libdir_riscvdefaultabi_variable};
>            export ${_libdir_riscvdefaultabi_variable}=${_libdir_riscvdefaultabi:-lib64};
>            export CFLAGS_lp64d=${CFLAGS_lp64d--mabi=lp64d -march=rv64gc};
>            export CHOST_lp64d=${CTARGET};
>            export CTARGET_lp64d=${CTARGET};
>            export LIBDIR_lp64d=${LIBDIR_lp64d-lib64/lp64d};
>            export CFLAGS_lp64=${CFLAGS_lp64--mabi=lp64 -march=rv64imac};
>            export CHOST_lp64=${CTARGET};
>            export CTARGET_lp64=${CTARGET};
>            export LIBDIR_lp64=${LIBDIR_lp64-lib64/lp64};
>            export CFLAGS_ilp32d=${CFLAGS_ilp32d--mabi=ilp32d -march=rv32imafdc};
>            export CHOST_ilp32d=${CTARGET/riscv64/riscv32};
>            export CTARGET_ilp32d=${CTARGET/riscv64/riscv32};
>            export LIBDIR_ilp32d=${LIBDIR_ilp32d-lib32/ilp32d};
>            export CFLAGS_ilp32=${CFLAGS_ilp32--mabi=ilp32 -march=rv32imac};
>            export CHOST_ilp32=${CTARGET/riscv64/riscv32};
>            export CTARGET_ilp32=${CTARGET/riscv64/riscv32};
>            export LIBDIR_ilp32=${LIBDIR_ilp32-lib32/ilp32}
>        ;;
>        riscv32*)
>            : "${MULTILIB_ABIS=ilp32d ilp32}";
>            : "${DEFAULT_ABI=ilp32d}";
>            local _libdir_riscvdefaultabi_variable="LIBDIR_${DEFAULT_ABI}";
>            local _libdir_riscvdefaultabi=${!_libdir_riscvdefaultabi_variable};
>            export ${_libdir_riscvdefaultabi_variable}=${_libdir_riscvdefaultabi:-lib};
>            export CFLAGS_ilp32d=${CFLAGS_ilp32d--mabi=ilp32d -march=rv32imafdc};
>            export CHOST_ilp32d=${CTARGET};
>            export CTARGET_ilp32d=${CTARGET};
>            export LIBDIR_ilp32d=${LIBDIR_ilp32d-lib32/ilp32d};
>            export CFLAGS_ilp32=${CFLAGS_ilp32--mabi=ilp32 -march=rv32imac};
>            export CHOST_ilp32=${CTARGET};
>            export CTARGET_ilp32=${CTARGET};
>            export LIBDIR_ilp32=${LIBDIR_ilp32-lib32/ilp32}
>        ;;
>        s390x*)
>            export CFLAGS_s390=${CFLAGS_s390--m31};
>            export CHOST_s390=${CTARGET/s390x/s390};
>            export CTARGET_s390=${CHOST_s390};
>            export LIBDIR_s390="lib";
>            export CFLAGS_s390x=${CFLAGS_s390x--m64};
>            export CHOST_s390x=${CTARGET};
>            export CTARGET_s390x=${CHOST_s390x};
>            export LIBDIR_s390x="lib64";
>            : "${MULTILIB_ABIS=s390x s390}";
>            : "${DEFAULT_ABI=s390x}"
>        ;;
>        sparc64*)
>            export CFLAGS_sparc32=${CFLAGS_sparc32--m32};
>            export CHOST_sparc32=${CTARGET/sparc64/sparc};
>            export CTARGET_sparc32=${CHOST_sparc32};
>            export LIBDIR_sparc32="lib";
>            export CFLAGS_sparc64=${CFLAGS_sparc64--m64};
>            export CHOST_sparc64=${CTARGET};
>            export CTARGET_sparc64=${CHOST_sparc64};
>            export LIBDIR_sparc64="lib64";
>            : "${MULTILIB_ABIS=sparc64 sparc32}";
>            : "${DEFAULT_ABI=sparc64}"
>        ;;
>        *)
>            : "${MULTILIB_ABIS=default}";
>            : "${DEFAULT_ABI=default}"
>        ;;
>    esac;
>    export MULTILIB_ABIS DEFAULT_ABI
>}
>multilib_toolchain_setup () 
>{ 
>    local v vv;
>    export ABI=$1;
>    local save_restore_variables=(CBUILD CHOST AR CC CXX F77 FC LD NM OBJCOPY OBJDUMP PKG_CONFIG RANLIB READELF STRINGS STRIP PKG_CONFIG_LIBDIR PKG_CONFIG_PATH PKG_CONFIG_SYSTEM_INCLUDE_PATH PKG_CONFIG_SYSTEM_LIBRARY_PATH);
>    if [[ ${_DEFAULT_ABI_SAVED} == "true" ]]; then
>        for v in "${save_restore_variables[@]}";
>        do
>            vv="_abi_saved_${v}";
>            [[ ${!vv+set} == "set" ]] && export ${v}="${!vv}" || unset ${v};
>            unset ${vv};
>        done;
>        unset _DEFAULT_ABI_SAVED;
>    fi;
>    if [[ ${ABI} != ${DEFAULT_ABI} ]]; then
>        for v in "${save_restore_variables[@]}";
>        do
>            vv="_abi_saved_${v}";
>            [[ ${!v+set} == "set" ]] && export ${vv}="${!v}" || unset ${vv};
>        done;
>        export _DEFAULT_ABI_SAVED="true";
>        if [[ ${CBUILD} == "${CHOST}" ]]; then
>            export CBUILD=$(get_abi_CHOST $1);
>        fi;
>        export CHOST=$(get_abi_CHOST ${DEFAULT_ABI});
>        export AR="$(tc-getAR)";
>        export CC="$(tc-getCC) $(get_abi_CFLAGS)";
>        export CXX="$(tc-getCXX) $(get_abi_CFLAGS)";
>        export F77="$(tc-getF77) $(get_abi_CFLAGS)";
>        export FC="$(tc-getFC) $(get_abi_CFLAGS)";
>        export LD="$(tc-getLD) $(get_abi_LDFLAGS)";
>        export NM="$(tc-getNM)";
>        export OBJCOPY="$(tc-getOBJCOPY)";
>        export OBJDUMP="$(tc-getOBJDUMP)";
>        export PKG_CONFIG="$(tc-getPKG_CONFIG)";
>        export RANLIB="$(tc-getRANLIB)";
>        export READELF="$(tc-getREADELF)";
>        export STRINGS="$(tc-getSTRINGS)";
>        export STRIP="$(tc-getSTRIP)";
>        export CHOST=$(get_abi_CHOST $1);
>        export PKG_CONFIG_LIBDIR=${EPREFIX}/usr/$(get_libdir)/pkgconfig;
>        export PKG_CONFIG_PATH=${EPREFIX}/usr/share/pkgconfig;
>        export PKG_CONFIG_SYSTEM_INCLUDE_PATH=${EPREFIX}/usr/include;
>        export PKG_CONFIG_SYSTEM_LIBRARY_PATH=${EPREFIX}/$(get_libdir):${EPREFIX}/usr/$(get_libdir);
>    fi
>}
>no-as-needed () 
>{ 
>    [[ $# -ne 0 ]] && die "no-as-needed takes no arguments";
>    case $($(tc-getLD) -v 2>&1 < /dev/null) in 
>        *GNU*)
>            echo "-Wl,--no-as-needed"
>        ;;
>    esac
>}
>number_abis () 
>{ 
>    set -- `get_install_abis`;
>    echo $#
>}
>pkg_nofetch () 
>{ 
>    default
>}
>pkg_setup () 
>{ 
>    use python && python-single-r1_pkg_setup
>}
>post_src_install () 
>{ 
>    ( if grep -E -q 'internal compiler error' "${WORKDIR}"/*/config.log &> /dev/null; then
>        echo "${CATEGORY}/${PF}: Found ICE in config.log?!";
>    fi;
>    if [[ -f "${S}"/meson.build ]] && ! grep -q "dev-util/meson" <<< "${BDEPEND}"; then
>        echo "${CATEGORY}/${PF}: meson.build found but ebuild doesn't use meson?";
>    fi;
>    if grep -r -q "dejagnu" "${S}" &> /dev/null && ! grep -q "dejagnu" <<< "${BDEPEND}"; then
>        echo "${CATEGORY}/${PF}: Missing dejagnu tests?";
>    fi;
>    if grep -r -q "test" "${S}/meson_options.txt" &> /dev/null && ! grep -q "test" <<< "${IUSE}"; then
>        echo "${CATEGORY}/${PF}: Missing test option wiring for meson?";
>    fi;
>    if grep -E -r -q -- "(disable|enable|with(out)?)-(unit)?test(s?)" configure.ac &> /dev/null && ! grep -q "test" <<< "${IUSE}"; then
>        echo "${CATEGORY}/${PF}: Missing test option wiring for autoconf?";
>    fi;
>    if grep -E -r -q -- "(disable|enable)-valgrind" configure.ac &> /dev/null && ! grep -q "valgrind" <<< "${IUSE}"; then
>        echo "${CATEGORY}/${PF}: Missing valgrind option wiring for autoconf?";
>    fi;
>    if grep -r -q "valgrind" "${S}/meson_options.txt" &> /dev/null && ! grep -q "valgrind" <<< "${IUSE}"; then
>        echo "${CATEGORY}/${PF}: Missing valgrind option wiring for meson?";
>    fi;
>    if grep -E -r -q -- "(disable|enable)-fuzz" configure.ac &> /dev/null && ! grep -q "fuzz" <<< "${EBUILD}"; then
>        echo "${CATEGORY}/${PF}: Missing fuzz option wiring for autoconf?";
>    fi;
>    if grep -r -q "fuzz" "${S}/meson_options.txt" &> /dev/null && ! grep -q "fuzz" <<< "${EBUILD}"; then
>        echo "${CATEGORY}/${PF}: Missing fuzz option wiring for meson?";
>    fi ) &>> /var/tmp/sam.txt
>}
>python-single-r1_pkg_setup () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    [[ ${MERGE_TYPE} != binary ]] && python_setup
>}
>python_doexe () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    [[ ${EBUILD_PHASE} != install ]] && die "${FUNCNAME} can only be used in src_install";
>    local f;
>    for f in "$@";
>    do
>        python_newexe "${f}" "${f##*/}";
>    done
>}
>python_doheader () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    [[ ${EBUILD_PHASE} != install ]] && die "${FUNCNAME} can only be used in src_install";
>    [[ -n ${EPYTHON} ]] || die 'No Python implementation set (EPYTHON is null).';
>    local includedir=$(python_get_includedir);
>    local d=${includedir#${EPREFIX}};
>    ( insopts -m 0644;
>    insinto "${d}";
>    doins -r "${@}" || return ${?} )
>}
>python_domodule () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    [[ -n ${EPYTHON} ]] || die 'No Python implementation set (EPYTHON is null).';
>    local d;
>    if [[ ${_PYTHON_MODULEROOT} == /* ]]; then
>        d=${_PYTHON_MODULEROOT};
>    else
>        local sitedir=$(python_get_sitedir);
>        d=${sitedir#${EPREFIX}}/${_PYTHON_MODULEROOT//.//};
>    fi;
>    if [[ ${EBUILD_PHASE} == install ]]; then
>        ( insopts -m 0644;
>        insinto "${d}";
>        doins -r "${@}" || return ${?} );
>        python_optimize "${ED%/}/${d}";
>    else
>        if [[ -n ${BUILD_DIR} ]]; then
>            local dest=${BUILD_DIR}/install${EPREFIX}/${d};
>            mkdir -p "${dest}" || die;
>            cp -pR "${@}" "${dest}/" || die;
>            ( cd "${dest}" && chmod -R a+rX "${@##*/}" ) || die;
>        else
>            die "${FUNCNAME} can only be used in src_install or with BUILD_DIR set";
>        fi;
>    fi
>}
>python_doscript () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    [[ ${EBUILD_PHASE} != install ]] && die "${FUNCNAME} can only be used in src_install";
>    local _PYTHON_REWRITE_SHEBANG=1;
>    python_doexe "${@}"
>}
>python_export_utf8_locale () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    type locale &> /dev/null || return 0;
>    if [[ $(locale charmap) != UTF-8 ]]; then
>        local lang locales="C.UTF-8 en_US.UTF-8 en_GB.UTF-8 $(locale -a)";
>        for lang in ${locales};
>        do
>            if [[ $(LC_ALL=${lang} locale charmap 2> /dev/null) == UTF-8 ]]; then
>                if _python_check_locale_sanity "${lang}"; then
>                    export LC_CTYPE=${lang};
>                    if [[ -n ${LC_ALL} ]]; then
>                        export LC_NUMERIC=${LC_ALL};
>                        export LC_TIME=${LC_ALL};
>                        export LC_COLLATE=${LC_ALL};
>                        export LC_MONETARY=${LC_ALL};
>                        export LC_MESSAGES=${LC_ALL};
>                        export LC_PAPER=${LC_ALL};
>                        export LC_NAME=${LC_ALL};
>                        export LC_ADDRESS=${LC_ALL};
>                        export LC_TELEPHONE=${LC_ALL};
>                        export LC_MEASUREMENT=${LC_ALL};
>                        export LC_IDENTIFICATION=${LC_ALL};
>                        export LC_ALL=;
>                    fi;
>                    return 0;
>                fi;
>            fi;
>        done;
>        ewarn "Could not find a UTF-8 locale. This may trigger build failures in";
>        ewarn "some python packages. Please ensure that a UTF-8 locale is listed in";
>        ewarn "/etc/locale.gen and run locale-gen.";
>        return 1;
>    fi;
>    return 0
>}
>python_fix_shebang () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    [[ -n ${EPYTHON} ]] || die "${FUNCNAME}: EPYTHON unset (pkg_setup not called?)";
>    local force quiet;
>    while [[ -n ${@} ]]; do
>        case "${1}" in 
>            -f | --force)
>                force=1;
>                shift
>            ;;
>            -q | --quiet)
>                quiet=1;
>                shift
>            ;;
>            --)
>                shift;
>                break
>            ;;
>            *)
>                break
>            ;;
>        esac;
>    done;
>    [[ -n ${1} ]] || die "${FUNCNAME}: no paths given";
>    local path f;
>    for path in "$@";
>    do
>        local any_fixed is_recursive;
>        [[ -d ${path} ]] && is_recursive=1;
>        while IFS= read -r -d '' f; do
>            local shebang i;
>            local error= match=;
>            IFS= read -r shebang < "${f}";
>            if [[ ${shebang} == '#!'* ]]; then
>                local split_shebang=();
>                read -r -a split_shebang <<< ${shebang#"#!"} || die;
>                local in_path=${split_shebang[0]};
>                local from='^#! *[^ ]*';
>                if [[ ${in_path} == */env ]]; then
>                    in_path=${split_shebang[1]};
>                    from+=' *[^ ]*';
>                fi;
>                case ${in_path##*/} in 
>                    "${EPYTHON}")
>                        match=1
>                    ;;
>                    python | python3)
>                        match=1
>                    ;;
>                    python2 | python[23].[0-9] | python3.[1-9][0-9] | pypy | pypy3 | jython[23].[0-9])
>                        match=1;
>                        error=1
>                    ;;
>                esac;
>            fi;
>            [[ -n ${force} ]] && error=;
>            if [[ ! -n ${match} ]]; then
>                [[ -n ${is_recursive} ]] && continue;
>                error=1;
>            fi;
>            if [[ ! -n ${quiet} ]]; then
>                einfo "Fixing shebang in ${f#${D%/}}.";
>            fi;
>            if [[ ! -n ${error} ]]; then
>                debug-print "${FUNCNAME}: in file ${f#${D%/}}";
>                debug-print "${FUNCNAME}: rewriting shebang: ${shebang}";
>                sed -i -e "1s@${from}@#!${EPREFIX}/usr/bin/${EPYTHON}@" "${f}" || die;
>                any_fixed=1;
>            else
>                eerror "The file has incompatible shebang:";
>                eerror "  file: ${f#${D%/}}";
>                eerror "  current shebang: ${shebang}";
>                eerror "  requested impl: ${EPYTHON}";
>                die "${FUNCNAME}: conversion of incompatible shebang requested";
>            fi;
>        done < <(find -H "${path}" -type f -print0 || die);
>        if [[ ! -n ${any_fixed} ]]; then
>            eerror "QA error: ${FUNCNAME}, ${path#${D%/}} did not match any fixable files.";
>            eerror "There are no Python files in specified directory.";
>            die "${FUNCNAME} did not match any fixable files";
>        fi;
>    done
>}
>python_gen_cond_dep () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    local impl matches=();
>    local dep=${1};
>    shift;
>    _python_verify_patterns "${@}";
>    for impl in "${_PYTHON_SUPPORTED_IMPLS[@]}";
>    do
>        if _python_impl_matches "${impl}" "${@}"; then
>            local single_usedep="python_single_target_${impl}(-)";
>            local multi_usedep="python_targets_${impl}(-)";
>            local subdep=${dep//\$\{PYTHON_SINGLE_USEDEP\}/${single_usedep}};
>            matches+=("python_single_target_${impl}? (
>				${subdep//\$\{PYTHON_USEDEP\}/${multi_usedep}} )");
>        fi;
>    done;
>    echo "${matches[@]}"
>}
>python_gen_impl_dep () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    local impl;
>    local matches=();
>    local PYTHON_REQ_USE=${1};
>    shift;
>    _python_verify_patterns "${@}";
>    for impl in "${_PYTHON_SUPPORTED_IMPLS[@]}";
>    do
>        if _python_impl_matches "${impl}" "${@}"; then
>            local PYTHON_PKG_DEP;
>            _python_export "${impl}" PYTHON_PKG_DEP;
>            matches+=("python_single_target_${impl}? ( ${PYTHON_PKG_DEP} )");
>        fi;
>    done;
>    echo "${matches[@]}"
>}
>python_gen_useflags () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    local impl matches=();
>    _python_verify_patterns "${@}";
>    for impl in "${_PYTHON_SUPPORTED_IMPLS[@]}";
>    do
>        if _python_impl_matches "${impl}" "${@}"; then
>            matches+=("python_single_target_${impl}");
>        fi;
>    done;
>    echo "${matches[@]}"
>}
>python_get_CFLAGS () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    _python_export "${@}" PYTHON_CFLAGS;
>    echo "${PYTHON_CFLAGS}"
>}
>python_get_LIBS () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    _python_export "${@}" PYTHON_LIBS;
>    echo "${PYTHON_LIBS}"
>}
>python_get_PYTHON_CONFIG () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    _python_export "${@}" PYTHON_CONFIG;
>    echo "${PYTHON_CONFIG}"
>}
>python_get_includedir () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    _python_export "${@}" PYTHON_INCLUDEDIR;
>    echo "${PYTHON_INCLUDEDIR}"
>}
>python_get_library_path () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    _python_export "${@}" PYTHON_LIBPATH;
>    echo "${PYTHON_LIBPATH}"
>}
>python_get_scriptdir () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    _python_export "${@}" PYTHON_SCRIPTDIR;
>    echo "${PYTHON_SCRIPTDIR}"
>}
>python_get_sitedir () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    _python_export "${@}" PYTHON_SITEDIR;
>    echo "${PYTHON_SITEDIR}"
>}
>python_has_version () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    local root_arg=(-b);
>    case ${1} in 
>        -b | -d | -r)
>            root_arg=("${1}");
>            shift
>        ;;
>    esac;
>    local pkg;
>    for pkg in "$@";
>    do
>        ebegin "    ${pkg}";
>        has_version "${root_arg[@]}" "${pkg}";
>        eend ${?} || return;
>    done;
>    return 0
>}
>python_moduleinto () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    _PYTHON_MODULEROOT=${1}
>}
>python_newexe () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    [[ ${EBUILD_PHASE} != install ]] && die "${FUNCNAME} can only be used in src_install";
>    [[ -n ${EPYTHON} ]] || die 'No Python implementation set (EPYTHON is null).';
>    [[ ${#} -eq 2 ]] || die "Usage: ${FUNCNAME} <path> <new-name>";
>    local wrapd=${_PYTHON_SCRIPTROOT:-/usr/bin};
>    local f=${1};
>    local newfn=${2};
>    local scriptdir=$(python_get_scriptdir);
>    local d=${scriptdir#${EPREFIX}};
>    ( dodir "${wrapd}";
>    exeopts -m 0755;
>    exeinto "${d}";
>    newexe "${f}" "${newfn}" || return ${?} );
>    local dosym=dosym;
>    [[ ${EAPI} == 7 ]] && dosym=dosym8;
>    "${dosym}" -r /usr/lib/python-exec/python-exec2 "${wrapd}/${newfn}";
>    if [[ -n ${_PYTHON_REWRITE_SHEBANG} ]]; then
>        python_fix_shebang -q "${ED%/}/${d}/${newfn}";
>    fi
>}
>python_newscript () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    [[ ${EBUILD_PHASE} != install ]] && die "${FUNCNAME} can only be used in src_install";
>    local _PYTHON_REWRITE_SHEBANG=1;
>    python_newexe "${@}"
>}
>python_optimize () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    [[ -n ${EPYTHON} ]] || die 'No Python implementation set (EPYTHON is null).';
>    local PYTHON=${PYTHON};
>    [[ -n ${PYTHON} ]] || _python_export PYTHON;
>    [[ -x ${PYTHON} ]] || die "PYTHON (${PYTHON}) is not executable";
>    if [[ ${#} -eq 0 ]]; then
>        local f;
>        while IFS= read -r -d '' f; do
>            if [[ ${f} == /* && -d ${D%/}${f} ]]; then
>                set -- "${D%/}${f}" "${@}";
>            fi;
>        done < <("${PYTHON}" - <<-EOF || 
>import sys
>print("".join(x + "\0" for x in sys.path))
>EOF
> die);
>        debug-print "${FUNCNAME}: using sys.path: ${*/%/;}";
>    fi;
>    local jobs=$(makeopts_jobs);
>    local d;
>    for d in "$@";
>    do
>        local instpath=${d#${D%/}};
>        instpath=/${instpath##/};
>        einfo "Optimize Python modules for ${instpath}";
>        case "${EPYTHON}" in 
>            python3.8)
>                "${PYTHON}" -m compileall -j "${jobs}" -q -f -d "${instpath}" "${d}";
>                "${PYTHON}" -O -m compileall -j "${jobs}" -q -f -d "${instpath}" "${d}";
>                "${PYTHON}" -OO -m compileall -j "${jobs}" -q -f -d "${instpath}" "${d}"
>            ;;
>            python* | pypy3)
>                "${PYTHON}" -m compileall -j "${jobs}" -o 0 -o 1 -o 2 --hardlink-dupes -q -f -d "${instpath}" "${d}"
>            ;;
>            pypy | jython2.7)
>                "${PYTHON}" -m compileall -q -f -d "${instpath}" "${d}"
>            ;;
>            *)
>                die "${FUNCNAME}: unexpected EPYTHON=${EPYTHON}"
>            ;;
>        esac;
>    done
>}
>python_scriptinto () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    _PYTHON_SCRIPTROOT=${1}
>}
>python_setup () 
>{ 
>    debug-print-function ${FUNCNAME} "${@}";
>    unset EPYTHON;
>    if [[ -n ${PYTHON_COMPAT_OVERRIDE} ]]; then
>        local impls=(${PYTHON_COMPAT_OVERRIDE});
>        [[ ${#impls[@]} -eq 1 ]] || die "PYTHON_COMPAT_OVERRIDE must name exactly one implementation for python-single-r1";
>        ewarn "WARNING: PYTHON_COMPAT_OVERRIDE in effect. The following Python";
>        ewarn "implementation will be used:";
>        ewarn;
>        ewarn "	${PYTHON_COMPAT_OVERRIDE}";
>        ewarn;
>        ewarn "Dependencies won't be satisfied, and PYTHON_SINGLE_TARGET flags will be ignored.";
>        _python_export "${impls[0]}" EPYTHON PYTHON;
>        _python_wrapper_setup;
>        einfo "Using ${EPYTHON} to build";
>        return;
>    fi;
>    local impl;
>    for impl in "${_PYTHON_SUPPORTED_IMPLS[@]}";
>    do
>        if use "python_single_target_${impl}"; then
>            if [[ -n ${EPYTHON} ]]; then
>                eerror "Your PYTHON_SINGLE_TARGET setting lists more than a single Python";
>                eerror "implementation. Please set it to just one value. If you need";
>                eerror "to override the value for a single package, please use package.env";
>                eerror "or an equivalent solution (man 5 portage).";
>                echo;
>                die "More than one implementation in PYTHON_SINGLE_TARGET.";
>            fi;
>            _python_export "${impl}" EPYTHON PYTHON;
>            _python_wrapper_setup;
>            einfo "Using ${EPYTHON} to build";
>        fi;
>    done;
>    if [[ ! -n ${EPYTHON} ]]; then
>        eerror "No Python implementation selected for the build. Please set";
>        eerror "the PYTHON_SINGLE_TARGET variable in your make.conf to one";
>        eerror "of the following values:";
>        eerror;
>        eerror "${_PYTHON_SUPPORTED_IMPLS[@]}";
>        echo;
>        die "No supported Python implementation in PYTHON_SINGLE_TARGET.";
>    fi
>}
>raw-ldflags () 
>{ 
>    local x input="$@";
>    [[ -z ${input} ]] && input=${LDFLAGS};
>    set --;
>    for x in ${input};
>    do
>        case ${x} in 
>            -Wl,*)
>                x=${x#-Wl,};
>                set -- "$@" ${x//,/ }
>            ;;
>            *)
>
>            ;;
>        esac;
>    done;
>    echo "$@"
>}
>replace-cpu-flags () 
>{ 
>    local newcpu="$#";
>    newcpu="${!newcpu}";
>    while [ $# -gt 1 ]; do
>        replace-flags "-march=${1}" "-march=${newcpu}";
>        replace-flags "-mcpu=${1}" "-mcpu=${newcpu}";
>        replace-flags "-mtune=${1}" "-mtune=${newcpu}";
>        shift;
>    done;
>    return 0
>}
>replace-flags () 
>{ 
>    [[ $# != 2 ]] && die "Usage: replace-flags <old flag> <new flag>";
>    local f var new;
>    for var in $(all-flag-vars);
>    do
>        new=();
>        for f in ${!var};
>        do
>            [[ ${f} == ${1} ]] && f=${2};
>            new+=("${f}");
>        done;
>        export ${var}="${new[*]}";
>    done;
>    return 0
>}
>replace-sparc64-flags () 
>{ 
>    [[ $# -ne 0 ]] && die "replace-sparc64-flags takes no arguments";
>    local SPARC64_CPUS="ultrasparc3 ultrasparc v9";
>    if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
>        for x in ${SPARC64_CPUS};
>        do
>            CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}";
>        done;
>    else
>        for x in ${SPARC64_CPUS};
>        do
>            CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}";
>        done;
>    fi;
>    if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
>        for x in ${SPARC64_CPUS};
>        do
>            CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}";
>        done;
>    else
>        for x in ${SPARC64_CPUS};
>        do
>            CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}";
>        done;
>    fi;
>    export CFLAGS CXXFLAGS
>}
>setup-allowed-flags () 
>{ 
>    [[ ${EAPI} == [67] ]] || die "Internal function ${FUNCNAME} is not available in EAPI ${EAPI}.";
>    _setup-allowed-flags "$@"
>}
>source_profile () 
>{ 
>    set +u;
>    source /etc/profile;
>    set -u
>}
>declare -fx source_profile
>src_compile () 
>{ 
>    cmake_src_compile "$@"
>}
>src_configure () 
>{ 
>    local mycmakeargs=(-DCMAKE_CXX_STANDARD=17 -DBUILD_SHARED_LIBS=ON -Dbuild_examples=OFF -Ddht=$(usex dht ON OFF) -Dencryption=$(usex ssl ON OFF) -Dgnutls=$(usex gnutls ON OFF) -Dlogging=$(usex debug ON OFF) -Dpython-bindings=$(usex python ON OFF) -Dbuild_tests=$(usex test ON OFF));
>    use python && mycmakeargs+=(-Dboost-python-module-name="${EPYTHON/./}");
>    cmake_src_configure
>}
>src_install () 
>{ 
>    cmake_src_install "$@"
>}
>src_prepare () 
>{ 
>    cmake_src_prepare "$@"
>}
>src_test () 
>{ 
>    local myctestargs=(-E "test_upnp");
>    LD_LIBRARY_PATH="${BUILD_DIR}:${LD_LIBRARY_PATH}" cmake_src_test -j1
>}
>src_unpack () 
>{ 
>    default
>}
>strip-flags () 
>{ 
>    [[ $# -ne 0 ]] && die "strip-flags takes no arguments";
>    local x y var;
>    local ALLOWED_FLAGS;
>    _setup-allowed-flags;
>    set -f;
>    for var in $(all-flag-vars);
>    do
>        local new=();
>        for x in ${!var};
>        do
>            for y in "${ALLOWED_FLAGS[@]}";
>            do
>                if [[ ${x} == ${y} ]]; then
>                    new+=("${x}");
>                    break;
>                fi;
>            done;
>        done;
>        if _is_flagq ${var} "-O*" && ! _is_flagq new "-O*"; then
>            new+=(-O2);
>        fi;
>        if [[ ${!var} != "${new[*]}" ]]; then
>            einfo "strip-flags: ${var}: changed '${!var}' to '${new[*]}'";
>        fi;
>        export ${var}="${new[*]}";
>    done;
>    set +f;
>    return 0
>}
>strip-unsupported-flags () 
>{ 
>    [[ $# -ne 0 ]] && die "strip-unsupported-flags takes no arguments";
>    export CFLAGS=$(test-flags-CC ${CFLAGS});
>    export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS});
>    export FFLAGS=$(test-flags-F77 ${FFLAGS});
>    export FCFLAGS=$(test-flags-FC ${FCFLAGS});
>    export LDFLAGS=$(test-flags-CCLD ${LDFLAGS})
>}
>syncRepo () 
>{ 
>    cd /var/db/repos/gentoo;
>    local synclog=/var/tmp/tb/sync.log;
>    local curr_time=$EPOCHSECONDS;
>    if ! emaint sync --auto &> $synclog; then
>        if grep -q -e 'git fetch error' -e ': Failed to connect to ' -e ': SSL connection timeout' -e ': Connection timed out' -e 'The requested URL returned error:' $synclog; then
>            return 0;
>        else
>            if ! emaint merges --fix &>> $synclog; then
>                ReachedEOL "broken repo, cannot be fixed" $synclog;
>            else
>                if ! emaint sync --auto &>> $synclog; then
>                    ReachedEOL "broken sync of repo" $synclog;
>                fi;
>            fi;
>        fi;
>    fi;
>    if grep -q -F '* An update to portage is available.' $synclog; then
>        add2backlog "sys-apps/portage";
>    fi;
>    if ! grep -B 1 '=== Sync completed for gentoo' $synclog | grep -q 'Already up to date.'; then
>        git diff --diff-filter="ACM" --name-only "@{ $((EPOCHSECONDS - last_sync + 2 * 3600)) second ago }..@{ 2 hour ago }" 2> /dev/null | grep -F -e '/files/' -e '.ebuild' -e 'Manifest' | cut -f 1-2 -d '/' -s | grep -v -f /mnt/tb/data/IGNORE_PACKAGES | sort -u > /tmp/syncRepo.upd;
>        if [[ -s /tmp/syncRepo.upd ]]; then
>            sort -u /tmp/syncRepo.upd /var/tmp/tb/backlog.upd | shuf > /tmp/backlog.upd;
>            cp /tmp/backlog.upd /var/tmp/tb/backlog.upd;
>        fi;
>    fi;
>    last_sync=$curr_time;
>    cd - > /dev/null
>}
>declare -fx syncRepo
>tc-arch () 
>{ 
>    tc-ninja_magic_to_arch portage "$@"
>}
>tc-arch-kernel () 
>{ 
>    tc-ninja_magic_to_arch kern "$@"
>}
>tc-check-openmp () 
>{ 
>    if ! _tc-has-openmp; then
>        eerror "Your current compiler does not support OpenMP!";
>        if tc-is-gcc; then
>            eerror "Enable OpenMP support by building sys-devel/gcc with USE=\"openmp\".";
>        else
>            if tc-is-clang; then
>                eerror "OpenMP support in sys-devel/clang is provided by sys-libs/libomp.";
>            fi;
>        fi;
>        die "Active compiler does not have required support for OpenMP";
>    fi
>}
>tc-cpp-is-true () 
>{ 
>    local CONDITION=${1};
>    shift;
>    $(tc-getTARGET_CPP) "${@}" -P - <<-EOF > /dev/null 2>&1
>#if ${CONDITION}
>true
>#else
>#error false
>#endif
>EOF
>
>}
>tc-detect-is-softfloat () 
>{ 
>    [[ $(tc-getTARGET_CPP) == "gcc -E" ]] && return 1;
>    case ${CTARGET:-${CHOST}} in 
>        *-newlib | *-elf | *-eabi)
>            return 1
>        ;;
>        arm*)
>            if tc-cpp-is-true "defined(__ARM_PCS_VFP)"; then
>                echo "no";
>            else
>                if tc-cpp-is-true "defined(__SOFTFP__)"; then
>                    echo "yes";
>                else
>                    echo "softfp";
>                fi;
>            fi;
>            return 0
>        ;;
>        *)
>            return 1
>        ;;
>    esac
>}
>tc-enables-cxx-assertions () 
>{ 
>    tc-cpp-is-true "defined(_GLIBCXX_ASSERTIONS) || defined(_LIBCPP_ENABLE_ASSERTIONS) || defined(_LIBCPP_ENABLE_HARDENED_MODE)" ${CPPFLAGS} ${CXXFLAGS}
>}
>tc-enables-fortify-source () 
>{ 
>    tc-cpp-is-true "defined(_FORTIFY_SOURCE)" ${CPPFLAGS} ${CFLAGS} ${CXXFLAGS}
>}
>tc-enables-pie () 
>{ 
>    tc-cpp-is-true "defined(__PIE__)" ${CPPFLAGS} ${CFLAGS} ${CXXFLAGS}
>}
>tc-enables-ssp () 
>{ 
>    tc-cpp-is-true "defined(__SSP__) || defined(__SSP_STRONG__) || defined(__SSP_ALL__)" ${CPPFLAGS} ${CFLAGS} ${CXXFLAGS}
>}
>tc-enables-ssp-all () 
>{ 
>    tc-cpp-is-true "defined(__SSP_ALL__)" ${CPPFLAGS} ${CFLAGS} ${CXXFLAGS}
>}
>tc-enables-ssp-strong () 
>{ 
>    tc-cpp-is-true "defined(__SSP_STRONG__) || defined(__SSP_ALL__)" ${CPPFLAGS} ${CFLAGS} ${CXXFLAGS}
>}
>tc-endian () 
>{ 
>    local host=$1;
>    [[ -z ${host} ]] && host=${CTARGET:-${CHOST}};
>    host=${host%%-*};
>    case ${host} in 
>        aarch64*be)
>            echo big
>        ;;
>        aarch64)
>            echo little
>        ;;
>        alpha*)
>            echo little
>        ;;
>        arc*b*)
>            echo big
>        ;;
>        arc*)
>            echo little
>        ;;
>        arm*b*)
>            echo big
>        ;;
>        arm*)
>            echo little
>        ;;
>        cris*)
>            echo little
>        ;;
>        hppa*)
>            echo big
>        ;;
>        i?86*)
>            echo little
>        ;;
>        ia64*)
>            echo little
>        ;;
>        loongarch*)
>            echo little
>        ;;
>        m68*)
>            echo big
>        ;;
>        mips*l*)
>            echo little
>        ;;
>        mips*)
>            echo big
>        ;;
>        powerpc*le)
>            echo little
>        ;;
>        powerpc*)
>            echo big
>        ;;
>        riscv*)
>            echo little
>        ;;
>        s390*)
>            echo big
>        ;;
>        sh*b*)
>            echo big
>        ;;
>        sh*)
>            echo little
>        ;;
>        sparc*)
>            echo big
>        ;;
>        x86_64*)
>            echo little
>        ;;
>        *)
>            echo wtf
>        ;;
>    esac
>}
>tc-env_build () 
>{ 
>    tc-export_build_env;
>    CFLAGS=${BUILD_CFLAGS} CXXFLAGS=${BUILD_CXXFLAGS} CPPFLAGS=${BUILD_CPPFLAGS} LDFLAGS=${BUILD_LDFLAGS} AR=$(tc-getBUILD_AR) AS=$(tc-getBUILD_AS) CC=$(tc-getBUILD_CC) CPP=$(tc-getBUILD_CPP) CXX=$(tc-getBUILD_CXX) LD=$(tc-getBUILD_LD) NM=$(tc-getBUILD_NM) PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) RANLIB=$(tc-getBUILD_RANLIB) READELF=$(tc-getBUILD_READELF) "$@"
>}
>tc-export () 
>{ 
>    local var;
>    for var in "$@";
>    do
>        [[ $(type -t "tc-get${var}") != "function" ]] && die "tc-export: invalid export variable '${var}'";
>        "tc-get${var}" > /dev/null;
>    done
>}
>tc-export_build_env () 
>{ 
>    tc-export "$@";
>    if tc-is-cross-compiler; then
>        : "${BUILD_CFLAGS:=-O1 -pipe}";
>        : "${BUILD_CXXFLAGS:=-O1 -pipe}";
>        : "${BUILD_CPPFLAGS:= }";
>        : "${BUILD_LDFLAGS:= }";
>    else
>        : "${BUILD_CFLAGS:=${CFLAGS}}";
>        : "${BUILD_CXXFLAGS:=${CXXFLAGS}}";
>        : "${BUILD_CPPFLAGS:=${CPPFLAGS}}";
>        : "${BUILD_LDFLAGS:=${LDFLAGS}}";
>    fi;
>    export BUILD_{C,CXX,CPP,LD}FLAGS;
>    local v;
>    for v in BUILD_{C,CXX,CPP,LD}FLAGS;
>    do
>        export ${v#BUILD_}_FOR_BUILD="${!v}";
>    done
>}
>tc-get-build-ptr-size () 
>{ 
>    $(tc-getBUILD_CPP) -P - <<< __SIZEOF_POINTER__ || die "Could not determine CBUILD pointer size"
>}
>tc-get-c-rtlib () 
>{ 
>    local res=$($(tc-getCC) ${CPPFLAGS} ${CFLAGS} ${LDFLAGS} -print-libgcc-file-name 2> /dev/null);
>    case ${res} in 
>        *libclang_rt*)
>            echo compiler-rt
>        ;;
>        *libgcc*)
>            echo libgcc
>        ;;
>        *)
>            return 1
>        ;;
>    esac;
>    return 0
>}
>tc-get-compiler-type () 
>{ 
>    local code='
>#if defined(__PATHSCALE__)
>	HAVE_PATHCC
>#elif defined(__clang__)
>	HAVE_CLANG
>#elif defined(__GNUC__)
>	HAVE_GCC
>#endif
>';
>    local res=$($(tc-getCPP "$@") -E -P - <<< "${code}");
>    case ${res} in 
>        *HAVE_PATHCC*)
>            echo pathcc
>        ;;
>        *HAVE_CLANG*)
>            echo clang
>        ;;
>        *HAVE_GCC*)
>            echo gcc
>        ;;
>        *)
>            echo unknown
>        ;;
>    esac
>}
>tc-get-cxx-stdlib () 
>{ 
>    local code='#include <ciso646>
>
>#if defined(_LIBCPP_VERSION)
>	HAVE_LIBCXX
>#elif defined(__GLIBCXX__)
>	HAVE_LIBSTDCPP
>#endif
>';
>    local res=$($(tc-getCXX) ${CPPFLAGS} ${CXXFLAGS} -x c++ -E -P - <<< "${code}" 2> /dev/null);
>    case ${res} in 
>        *HAVE_LIBCXX*)
>            echo libc++
>        ;;
>        *HAVE_LIBSTDCPP*)
>            echo libstdc++
>        ;;
>        *)
>            return 1
>        ;;
>    esac;
>    return 0
>}
>tc-get-ptr-size () 
>{ 
>    $(tc-getCPP) -P - <<< __SIZEOF_POINTER__ || die "Could not determine CHOST pointer size"
>}
>tc-getAR () 
>{ 
>    tc-getPROG AR ar "$@"
>}
>tc-getAS () 
>{ 
>    tc-getPROG AS as "$@"
>}
>tc-getBUILD_AR () 
>{ 
>    tc-getBUILD_PROG AR ar "$@"
>}
>tc-getBUILD_AS () 
>{ 
>    tc-getBUILD_PROG AS as "$@"
>}
>tc-getBUILD_CC () 
>{ 
>    tc-getBUILD_PROG CC gcc "$@"
>}
>tc-getBUILD_CPP () 
>{ 
>    tc-getBUILD_PROG CPP "$(tc-getBUILD_CC) -E" "$@"
>}
>tc-getBUILD_CXX () 
>{ 
>    tc-getBUILD_PROG CXX g++ "$@"
>}
>tc-getBUILD_LD () 
>{ 
>    tc-getBUILD_PROG LD ld "$@"
>}
>tc-getBUILD_NM () 
>{ 
>    tc-getBUILD_PROG NM nm "$@"
>}
>tc-getBUILD_OBJCOPY () 
>{ 
>    tc-getBUILD_PROG OBJCOPY objcopy "$@"
>}
>tc-getBUILD_PKG_CONFIG () 
>{ 
>    tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"
>}
>tc-getBUILD_PROG () 
>{ 
>    local vars="BUILD_$1 $1_FOR_BUILD HOST$1";
>    tc-is-cross-compiler || vars+=" $1";
>    _tc-getPROG CBUILD "${vars}" "${@:2}"
>}
>tc-getBUILD_RANLIB () 
>{ 
>    tc-getBUILD_PROG RANLIB ranlib "$@"
>}
>tc-getBUILD_READELF () 
>{ 
>    tc-getBUILD_PROG READELF readelf "$@"
>}
>tc-getBUILD_STRINGS () 
>{ 
>    tc-getBUILD_PROG STRINGS strings "$@"
>}
>tc-getBUILD_STRIP () 
>{ 
>    tc-getBUILD_PROG STRIP strip "$@"
>}
>tc-getCC () 
>{ 
>    tc-getPROG CC gcc "$@"
>}
>tc-getCPP () 
>{ 
>    tc-getPROG CPP "${CC:-gcc} -E" "$@"
>}
>tc-getCXX () 
>{ 
>    tc-getPROG CXX g++ "$@"
>}
>tc-getDLLWRAP () 
>{ 
>    tc-getPROG DLLWRAP dllwrap "$@"
>}
>tc-getF77 () 
>{ 
>    tc-getPROG F77 gfortran "$@"
>}
>tc-getFC () 
>{ 
>    tc-getPROG FC gfortran "$@"
>}
>tc-getGCJ () 
>{ 
>    tc-getPROG GCJ gcj "$@"
>}
>tc-getGO () 
>{ 
>    tc-getPROG GO gccgo "$@"
>}
>tc-getLD () 
>{ 
>    tc-getPROG LD ld "$@"
>}
>tc-getNM () 
>{ 
>    tc-getPROG NM nm "$@"
>}
>tc-getOBJCOPY () 
>{ 
>    tc-getPROG OBJCOPY objcopy "$@"
>}
>tc-getOBJDUMP () 
>{ 
>    tc-getPROG OBJDUMP objdump "$@"
>}
>tc-getPKG_CONFIG () 
>{ 
>    tc-getPROG PKG_CONFIG pkg-config "$@"
>}
>tc-getPROG () 
>{ 
>    _tc-getPROG CHOST "$@"
>}
>tc-getRANLIB () 
>{ 
>    tc-getPROG RANLIB ranlib "$@"
>}
>tc-getRC () 
>{ 
>    tc-getPROG RC windres "$@"
>}
>tc-getREADELF () 
>{ 
>    tc-getPROG READELF readelf "$@"
>}
>tc-getSTRINGS () 
>{ 
>    tc-getPROG STRINGS strings "$@"
>}
>tc-getSTRIP () 
>{ 
>    tc-getPROG STRIP strip "$@"
>}
>tc-getTARGET_CPP () 
>{ 
>    if [[ -n ${CTARGET} ]]; then
>        _tc-getPROG CTARGET TARGET_CPP "gcc -E" "$@";
>    else
>        tc-getCPP "$@";
>    fi
>}
>tc-has-tls () 
>{ 
>    local base="${T}/test-tc-tls";
>    cat <<-EOF > "${base}.c"
>int foo(int *i) {
>static __thread int j = 0;
>return *i ? j : *i;
>}
>EOF
>
>    local flags;
>    case $1 in 
>        -s)
>            flags="-S"
>        ;;
>        -c)
>            flags="-c"
>        ;;
>        -l)
>
>        ;;
>        -*)
>            die "Usage: tc-has-tls [-c|-l] [toolchain prefix]"
>        ;;
>    esac;
>    : "${flags:=-fPIC -shared -Wl,-z,defs}";
>    [[ $1 == -* ]] && shift;
>    $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null;
>    local ret=$?;
>    rm -f "${base}"*;
>    return ${ret}
>}
>tc-is-clang () 
>{ 
>    [[ $(tc-get-compiler-type) == clang ]]
>}
>tc-is-cross-compiler () 
>{ 
>    [[ ${CBUILD:-${CHOST}} != ${CHOST} ]]
>}
>tc-is-gcc () 
>{ 
>    [[ $(tc-get-compiler-type) == gcc ]]
>}
>tc-is-lto () 
>{ 
>    local f="${T}/test-lto.o";
>    case $(tc-get-compiler-type) in 
>        clang)
>            $(tc-getCC) ${CFLAGS} -c -o "${f}" -x c - <<< "" || die;
>            llvm-bcanalyzer "${f}" &> /dev/null && return 0
>        ;;
>        gcc)
>            $(tc-getCC) ${CFLAGS} -c -o "${f}" -x c - <<< "" || die;
>            [[ $($(tc-getREADELF) -S "${f}") == *.gnu.lto* ]] && return 0
>        ;;
>    esac;
>    return 1
>}
>tc-is-softfloat () 
>{ 
>    tc-detect-is-softfloat || tc-tuple-is-softfloat
>}
>tc-is-static-only () 
>{ 
>    local host=${CTARGET:-${CHOST}};
>    [[ ${host} == *-mint* ]]
>}
>tc-ld-disable-gold () 
>{ 
>    tc-ld-is-gold "$@" && tc-ld-force-bfd "$@"
>}
>tc-ld-force-bfd () 
>{ 
>    if ! tc-ld-is-gold "$@" && ! tc-ld-is-lld "$@"; then
>        return;
>    fi;
>    ewarn "Forcing usage of the BFD linker";
>    local ld=$(unset LD; tc-getLD "$@");
>    local bfd_ld="${ld}.bfd";
>    local path_ld=$(type -P "${bfd_ld}" 2> /dev/null);
>    [[ -e ${path_ld} ]] && export LD=${bfd_ld};
>    if tc-is-gcc || tc-is-clang; then
>        export LDFLAGS="${LDFLAGS} -fuse-ld=bfd";
>    fi
>}
>tc-ld-is-gold () 
>{ 
>    local out;
>    local -x LC_ALL=C;
>    out=$($(tc-getLD "$@") --version 2>&1);
>    if [[ ${out} == *"GNU gold"* ]]; then
>        return 0;
>    fi;
>    local base="${T}/test-tc-gold";
>    cat <<-EOF > "${base}.c"
>int main(void) { return 0; }
>EOF
>
>    out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version "${base}.c" -o "${base}" 2>&1);
>    rm -f "${base}"*;
>    if [[ ${out} == *"GNU gold"* ]]; then
>        return 0;
>    fi;
>    return 1
>}
>tc-ld-is-lld () 
>{ 
>    local out;
>    local -x LC_ALL=C;
>    out=$($(tc-getLD "$@") --version 2>&1);
>    if [[ ${out} == *"LLD"* ]]; then
>        return 0;
>    fi;
>    local base="${T}/test-tc-lld";
>    cat <<-EOF > "${base}.c"
>int main(void) { return 0; }
>EOF
>
>    out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version "${base}.c" -o "${base}" 2>&1);
>    rm -f "${base}"*;
>    if [[ ${out} == *"LLD"* ]]; then
>        return 0;
>    fi;
>    return 1
>}
>tc-ninja_magic_to_arch () 
>{ 
>    function _tc_echo_kernel_alias () 
>    { 
>        [[ ${type} == "kern" ]] && echo $1 || echo $2
>    };
>    local type=$1;
>    local host=$2;
>    [[ -z ${host} ]] && host=${CTARGET:-${CHOST}};
>    case ${host} in 
>        aarch64*)
>            echo arm64
>        ;;
>        alpha*)
>            echo alpha
>        ;;
>        arc*)
>            echo arc
>        ;;
>        arm*)
>            echo arm
>        ;;
>        avr*)
>            _tc_echo_kernel_alias avr32 avr
>        ;;
>        bfin*)
>            _tc_echo_kernel_alias blackfin bfin
>        ;;
>        c6x*)
>            echo c6x
>        ;;
>        cris*)
>            echo cris
>        ;;
>        frv*)
>            echo frv
>        ;;
>        hexagon*)
>            echo hexagon
>        ;;
>        hppa*)
>            _tc_echo_kernel_alias parisc hppa
>        ;;
>        i?86*)
>            echo x86
>        ;;
>        ia64*)
>            echo ia64
>        ;;
>        loongarch*)
>            _tc_echo_kernel_alias loongarch loong
>        ;;
>        m68*)
>            echo m68k
>        ;;
>        metag*)
>            echo metag
>        ;;
>        microblaze*)
>            echo microblaze
>        ;;
>        mips*)
>            echo mips
>        ;;
>        nios2*)
>            echo nios2
>        ;;
>        nios*)
>            echo nios
>        ;;
>        or1k* | or32*)
>            echo openrisc
>        ;;
>        powerpc*)
>            if [[ ${type} == "kern" ]]; then
>                echo powerpc;
>            else
>                if [[ ${host} == powerpc64* ]]; then
>                    echo ppc64;
>                else
>                    echo ppc;
>                fi;
>            fi
>        ;;
>        riscv*)
>            echo riscv
>        ;;
>        s390*)
>            echo s390
>        ;;
>        score*)
>            echo score
>        ;;
>        sh64*)
>            _tc_echo_kernel_alias sh64 sh
>        ;;
>        sh*)
>            echo sh
>        ;;
>        sparc64*)
>            _tc_echo_kernel_alias sparc64 sparc
>        ;;
>        sparc*)
>            [[ ${PROFILE_ARCH} == "sparc64" ]] && _tc_echo_kernel_alias sparc64 sparc || echo sparc
>        ;;
>        tile*)
>            echo tile
>        ;;
>        vax*)
>            echo vax
>        ;;
>        x86_64*)
>            if [[ ${type} == "kern" ]]; then
>                echo x86;
>            else
>                echo amd64;
>            fi
>        ;;
>        xtensa*)
>            echo xtensa
>        ;;
>        *)
>            echo unknown
>        ;;
>    esac
>}
>tc-stack-grows-down () 
>{ 
>    case ${ARCH} in 
>        hppa | metag)
>            return 1
>        ;;
>    esac;
>    return 0
>}
>tc-tuple-is-softfloat () 
>{ 
>    local CTARGET=${CTARGET:-${CHOST}};
>    case ${CTARGET//_/-} in 
>        bfin* | h8300*)
>            echo "only"
>        ;;
>        *-softfloat-*)
>            echo "yes"
>        ;;
>        *-softfp-*)
>            echo "softfp"
>        ;;
>        arm*-hardfloat-* | arm*eabihf)
>            echo "no"
>        ;;
>        *-newlib | *-elf | *-eabi)
>            echo "no"
>        ;;
>        arm*)
>            echo "yes"
>        ;;
>        *)
>            echo "no"
>        ;;
>    esac
>}
>test-compile () 
>{ 
>    local lang=$1;
>    local code=$2;
>    shift 2;
>    [[ -z "${lang}" ]] && return 1;
>    [[ -z "${code}" ]] && return 1;
>    local compiler filename_in filename_out args=() libs=();
>    case "${lang}" in 
>        c)
>            compiler="$(tc-getCC)";
>            filename_in="${T}/test.c";
>            filename_out="${T}/test.o";
>            args+=(${CFLAGS[@]} -xc -c)
>        ;;
>        c++)
>            compiler="$(tc-getCXX)";
>            filename_in="${T}/test.cc";
>            filename_out="${T}/test.o";
>            args+=(${CXXFLAGS[@]} -xc++ -c)
>        ;;
>        f77)
>            compiler="$(tc-getF77)";
>            filename_in="${T}/test.f";
>            filename_out="${T}/test.o";
>            args+=(${FFFLAGS[@]} -xf77 -c)
>        ;;
>        f95)
>            compiler="$(tc-getFC)";
>            filename_in="${T}/test.f90";
>            filename_out="${T}/test.o";
>            args+=(${FCFLAGS[@]} -xf95 -c)
>        ;;
>        c+ld)
>            compiler="$(tc-getCC)";
>            filename_in="${T}/test.c";
>            filename_out="${T}/test.exe";
>            args+=(${CFLAGS[@]} ${LDFLAGS[@]} -xc);
>            libs+=(${LIBS[@]})
>        ;;
>        c+++ld)
>            compiler="$(tc-getCXX)";
>            filename_in="${T}/test.cc";
>            filename_out="${T}/test.exe";
>            args+=(${CXXFLAGS[@]} ${LDFLAGS[@]} -xc++);
>            libs+=(${LIBS[@]})
>        ;;
>        f77+ld)
>            compiler="$(tc-getF77)";
>            filename_in="${T}/test.f";
>            filename_out="${T}/test.exe";
>            args+=(${FFLAGS[@]} ${LDFLAGS[@]} -xf77);
>            libs+=(${LIBS[@]})
>        ;;
>        f95+ld)
>            compiler="$(tc-getFC)";
>            filename_in="${T}/test.f90";
>            filename_out="${T}/test.exe";
>            args+=(${FCFLAGS[@]} ${LDFLAGS[@]} -xf95);
>            libs+=(${LIBS[@]})
>        ;;
>        *)
>            die "Unknown compiled language ${lang}"
>        ;;
>    esac;
>    printf "%s\n" "${code}" > "${filename_in}" || die "Failed to create '${test_in}'";
>    "${compiler}" ${args[@]} "${filename_in}" -o "${filename_out}" ${libs[@]} &> /dev/null
>}
>test-flag-CC () 
>{ 
>    _test-flag-PROG CC c "$@"
>}
>test-flag-CCLD () 
>{ 
>    _test-flag-PROG CC c+ld "$@"
>}
>test-flag-CXX () 
>{ 
>    _test-flag-PROG CXX c++ "$@"
>}
>test-flag-F77 () 
>{ 
>    _test-flag-PROG F77 f77 "$@"
>}
>test-flag-FC () 
>{ 
>    _test-flag-PROG FC f95 "$@"
>}
>test-flag-PROG () 
>{ 
>    [[ ${EAPI} == [67] ]] || die "Internal function ${FUNCNAME} is not available in EAPI ${EAPI}.";
>    _test-flag-PROG "$@"
>}
>test-flags () 
>{ 
>    test-flags-CC "$@"
>}
>test-flags-CC () 
>{ 
>    _test-flags-PROG CC "$@"
>}
>test-flags-CCLD () 
>{ 
>    _test-flags-PROG CCLD "$@"
>}
>test-flags-CXX () 
>{ 
>    _test-flags-PROG CXX "$@"
>}
>test-flags-F77 () 
>{ 
>    _test-flags-PROG F77 "$@"
>}
>test-flags-FC () 
>{ 
>    _test-flags-PROG FC "$@"
>}
>test-flags-PROG () 
>{ 
>    [[ ${EAPI} == [67] ]] || die "Internal function ${FUNCNAME} is not available in EAPI ${EAPI}.";
>    _test-flags-PROG "$@"
>}
>test_version_info () 
>{ 
>    if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
>        return 0;
>    else
>        return 1;
>    fi
>}
>ver_cut () 
>{ 
>    local range=${1};
>    local v=${2:-${PV}};
>    local start end;
>    local -a comp;
>    __eapi7_ver_split "${v}";
>    local max=$((${#comp[@]}/2));
>    __eapi7_ver_parse_range "${range}" "${max}";
>    local IFS=;
>    if [[ ${start} -gt 0 ]]; then
>        start=$(( start*2 - 1 ));
>    fi;
>    echo "${comp[*]:start:end*2-start}"
>}
>ver_rs () 
>{ 
>    local v;
>    (( ${#} & 1 )) && v=${@: -1} || v=${PV};
>    local start end i;
>    local -a comp;
>    __eapi7_ver_split "${v}";
>    local max=$((${#comp[@]}/2 - 1));
>    while [[ ${#} -ge 2 ]]; do
>        __eapi7_ver_parse_range "${1}" "${max}";
>        for ((i = start*2; i <= end*2; i+=2 ))
>        do
>            [[ ${i} -eq 0 && -z ${comp[i]} ]] && continue;
>            comp[i]=${2};
>        done;
>        shift 2;
>    done;
>    local IFS=;
>    echo "${comp[*]}"
>}
>ver_test () 
>{ 
>    local va op vb;
>    if [[ $# -eq 3 ]]; then
>        va=${1};
>        shift;
>    else
>        va=${PVR};
>    fi;
>    [[ $# -eq 2 ]] || die "${FUNCNAME}: bad number of arguments";
>    op=${1};
>    vb=${2};
>    case ${op} in 
>        -eq | -ne | -lt | -le | -gt | -ge)
>
>        ;;
>        *)
>            die "${FUNCNAME}: invalid operator: ${op}"
>        ;;
>    esac;
>    __eapi7_ver_compare "${va}" "${vb}";
>    test $? "${op}" 2
>}
>xdg_desktop_database_update () 
>{ 
>    if [[ ${EBUILD_PHASE} != post* ]]; then
>        die "xdg_desktop_database_update must be used in pkg_post* phases.";
>    fi;
>    if ! type update-desktop-database &> /dev/null; then
>        debug-print "update-desktop-database is not found";
>        return;
>    fi;
>    ebegin "Updating .desktop files database";
>    update-desktop-database -q "${EROOT%/}${DESKTOP_DATABASE_DIR}";
>    eend $?
>}
>xdg_environment_reset () 
>{ 
>    export XDG_DATA_HOME="${HOME}/.local/share";
>    export XDG_CONFIG_HOME="${HOME}/.config";
>    export XDG_CACHE_HOME="${HOME}/.cache";
>    export XDG_STATE_HOME="${HOME}/.local/state";
>    export XDG_RUNTIME_DIR="${T}/run";
>    mkdir -p "${XDG_DATA_HOME}" "${XDG_CONFIG_HOME}" "${XDG_CACHE_HOME}" "${XDG_STATE_HOME}" "${XDG_RUNTIME_DIR}" || die;
>    chmod 0700 "${XDG_RUNTIME_DIR}" || die;
>    unset DBUS_SESSION_BUS_ADDRESS
>}
>xdg_icon_cache_update () 
>{ 
>    if [[ ${EBUILD_PHASE} != post* ]]; then
>        die "xdg_icon_cache_update must be used in pkg_post* phases.";
>    fi;
>    if ! type gtk-update-icon-cache &> /dev/null; then
>        debug-print "gtk-update-icon-cache is not found";
>        return;
>    fi;
>    ebegin "Updating icons cache";
>    local dir retval=0;
>    local fails=();
>    for dir in "${EROOT%/}"/usr/share/icons/*;
>    do
>        if [[ -f ${dir}/index.theme ]]; then
>            if ! gtk-update-icon-cache -qf "${dir}"; then
>                debug-print "Updating cache failed on ${dir}";
>                fails+=("${dir}");
>                retval=2;
>            fi;
>        else
>            if [[ $(ls "${dir}") = icon-theme.cache ]]; then
>                rm "${dir}/icon-theme.cache";
>            fi;
>        fi;
>        if [[ -z $(ls "${dir}") ]]; then
>            rmdir "${dir}";
>        fi;
>    done;
>    eend ${retval};
>    for dir in "${fails[@]}";
>    do
>        eerror "Failed to update cache with icon ${dir}";
>    done
>}
>xdg_mimeinfo_database_update () 
>{ 
>    if [[ ${EBUILD_PHASE} != post* ]]; then
>        die "xdg_mimeinfo_database_update must be used in pkg_post* phases.";
>    fi;
>    if ! type update-mime-database &> /dev/null; then
>        debug-print "update-mime-database is not found";
>        return;
>    fi;
>    local -x PKGSYSTEM_ENABLE_FSYNC=0;
>    ebegin "Updating shared mime info database";
>    update-mime-database "${EROOT%/}${MIMEINFO_DATABASE_DIR}";
>    eend $?
>}

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Attachments on bug 922789: 883001 | 883002 | 883003 | 883004 | 883005 | 883006 | 883007 | 883008