Initially the bug is reported by Sora Lee at https://github.com/trofi/nix-guix-gentoo/issues/28 where LDFLAGS=-static does not work as is even for simple binaries and requires pulling in `llvm-libunwind? ( sys-libs/llvm-libunwind[static-libs] )` or the equivalent. The gist of the issue: On a system with sys-libs/glibc[static-libs] I would expect the both following commands to succeed: $ printf "int main(){}" | gcc -x c - -o a -static && ./a $ printf "int main(){}" | clang -x c - -o a -static && ./a ld.lld: error: unable to find library -l:libunwind.a clang-15: error: linker command failed with exit code 1 (use -v to see invocation) The second fails on `default/linux/amd64/17.1/systemd/clang/merged-usr` profile. While I can add `llvm-libunwind? ( sys-libs/llvm-libunwind[static-libs] )` (and other runtime details) to the dependencies I think it's a too low level implementation detail to copy into rebuilds with static linking. I would suggest adding this RDEPEND to sys-libs/glibc[static-libs] and to virtual/libc[static-libs]. Then ebulds that can't live without static linking could signal it with just a DEPEND="virtual/libc[static-libs]" and expect simple programs to link. The in-tree example with the same problem is sys-apps/busybox: # USE='static -pam' emerge -v1 busybox ... ld.lld: error: unable to find library -l:libunwind.a clang-15: error: linker command failed with exit code 1 (use -v to see invocation) $ emerge --info Portage 3.0.44 (python 3.10.9-final-0, default/linux/amd64/17.1/systemd/clang/merged-usr, gcc-12, glibc-2.36-r7, 6.1.8 x86_64) ================================================================= System uname: Linux-6.1.8-x86_64-AMD_Ryzen_9_5950X_16-Core_Processor-with-glibc2.36 KiB Mem: 131862460 total, 43728548 free KiB Swap: 197793688 total, 197058456 free Timestamp of repository gentoo: Sun, 29 Jan 2023 21:30:01 +0000 Head commit of repository gentoo: c8bdd9aa2e808211185025407c08335f523c9775 sh bash 5.2_p15-r1 ld GNU ld (Gentoo 2.39 p5) 2.39.0 app-misc/pax-utils: 1.3.7::gentoo app-shells/bash: 5.2_p15-r1::gentoo dev-lang/perl: 5.36.0-r2::gentoo dev-lang/python: 3.10.9-r1::gentoo, 3.11.1-r1::gentoo dev-lang/rust: 1.67.0::gentoo dev-util/cmake: 3.25.2::gentoo dev-util/meson: 1.0.0::gentoo sys-apps/baselayout: 2.13-r1::gentoo sys-apps/sandbox: 2.30-r1::gentoo sys-apps/systemd: 252.4-r1::gentoo sys-devel/autoconf: 2.71-r5::gentoo sys-devel/automake: 1.16.5::gentoo sys-devel/binutils: 2.39-r4::gentoo, 2.40::gentoo sys-devel/binutils-config: 5.5::gentoo sys-devel/clang: 15.0.7-r1::gentoo sys-devel/gcc: 12.2.1_p20230121-r1::gentoo sys-devel/gcc-config: 2.10::gentoo sys-devel/libtool: 2.4.7-r1::gentoo sys-devel/lld: 15.0.7::gentoo sys-devel/llvm: 15.0.7::gentoo sys-devel/make: 4.4::gentoo sys-kernel/linux-headers: 6.1::gentoo (virtual/os-headers) sys-libs/glibc: 2.36-r7::gentoo Repositories: gentoo location: /bound/portage sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 volatile: True sync-rsync-verify-metamanifest: yes sync-rsync-verify-max-age: 24 sync-rsync-verify-jobs: 1 sync-rsync-extra-opts: slyfox location: /bound/slyfox-gentoo masters: gentoo priority: 0 volatile: True nix-guix location: /bound/nix-guix-gentoo masters: gentoo priority: 1 volatile: True ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="@FREE" ADDR2LINE="llvm-addr2line" AR="llvm-ar" AS="clang -c" CBUILD="x86_64-pc-linux-gnu" CC="clang" CFLAGS="-O2 -pipe -fdiagnostics-show-option -frecord-gcc-switches" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/gentoo-release /etc/sandbox.d" CPP="clang-cpp" CXX="clang++" CXXFLAGS="-O2 -pipe" DISTDIR="/bound/distfiles" 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" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live config-protect-if-modified distlocks ebuild-locks fail-clean fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="C.UTF8" LD="ld.lld" LDFLAGS="-Wl,-O1 -Wl,--as-needed -fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind -Wl,--as-needed -Wl,--hash-style=gnu" LEX="flex" MAKEOPTS="-j17 -l17" NM="llvm-nm" OBJCOPY="llvm-objcopy" OBJDUMP="llvm-objdump" PKGDIR="/var/cache/binpkgs" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/dev/shm" RANLIB="llvm-ranlib" READELF="llvm-readelf" SHELL="/bin/bash" STRINGS="llvm-strings" STRIP="llvm-strip" USE="acl amd64 bzip2 clang cli crypt dri fortran gdbm iconv ipv6 libglvnd libtirpc llvm-libunwind multilib ncurses nls nptl openmp pam pcre readline seccomp ssl systemd test-rust udev unicode xattr zlib" ABI_X86="64" ADA_TARGET="gnat_2021" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="libinput" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-4 php8-0" POSTGRES_TARGETS="postgres12 postgres13" PYTHON_SINGLE_TARGET="python3_10" PYTHON_TARGETS="python3_10" RUBY_TARGETS="ruby27 ruby30" USERLAND="GNU" VIDEO_CARDS="amdgpu fbdev intel nouveau radeon radeonsi vesa dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq proto steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: ARFLAGS, ASFLAGS, CCLD, CONFIG_SHELL, CPPFLAGS, CTARGET, CXXFILT, ELFEDIT, EMERGE_DEFAULT_OPTS, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, INSTALL_MASK, LC_ALL, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, RUSTFLAGS, SIZE, YACC, YFLAGS
FWIW the LLVM/Clang profiles are considered pretty experimental still. For Clang, it's tricky because it depends on configuration and the (default) flags passed. Ionen points out it should be harmless dep-wise (non-invasive to users, no need to then enable static-libs for its deps) to default to +static-libs on llvm-libunwind, which would cover most cases here. I think that generally makes sense. I see three options: 1. Adding IUSE=llvm-libunwind to virtual/libc 2. Defaulting on (which doesn't feel like a full solution alone) +static-libs in llvm-libunwind 3. Making clang-common[default-compiler-rt] depend on libunwind[static-libs] (or correspondingly llvm-libunwind[static-libs] if USE=llvm-libunwind) I think 2+3 is probably a good fit?
> > I see three options: > 1. Adding IUSE=llvm-libunwind to virtual/libc > 2. Defaulting on (which doesn't feel like a full solution alone) > +static-libs in llvm-libunwind > 3. Making clang-common[default-compiler-rt] depend on libunwind[static-libs] > (or correspondingly llvm-libunwind[static-libs] if USE=llvm-libunwind) > > I think 2+3 is probably a good fit? Yes. We need to keep in mind that there are other library candidates too (unfortunately). Things like libatomic for example ...
*** Bug 893132 has been marked as a duplicate of this bug. ***
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=5618033009fedcbe3a0491552cf296faade27087 commit 5618033009fedcbe3a0491552cf296faade27087 Author: Sam James <sam@gentoo.org> AuthorDate: 2023-03-03 22:21:49 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2023-03-03 22:21:49 +0000 sys-devel/clang-common: require *unwind[static-libs] for USE=default-compiler-rt Builtins don't work correctly without this. Closes: https://bugs.gentoo.org/892956 Signed-off-by: Sam James <sam@gentoo.org> .../{clang-common-15.0.7-r2.ebuild => clang-common-15.0.7-r3.ebuild} | 4 ++-- sys-devel/clang-common/clang-common-16.0.0.9999.ebuild | 4 ++-- ...ang-common-16.0.0_rc3.ebuild => clang-common-16.0.0_rc3-r1.ebuild} | 4 ++-- sys-devel/clang-common/clang-common-17.0.0.9999.ebuild | 4 ++-- sys-devel/clang-common/clang-common-17.0.0_pre20230225.ebuild | 4 ++-- 5 files changed, 10 insertions(+), 10 deletions(-) Additionally, it has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=ec0857c1f4b448861a54ad185c79528c070776e2 commit ec0857c1f4b448861a54ad185c79528c070776e2 Author: Sam James <sam@gentoo.org> AuthorDate: 2023-03-03 22:15:03 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2023-03-03 22:15:17 +0000 profiles/features/llvm: default sys-libs/llvm-libunwind[static-libs] on Without this, statically linking even a basic example fails because we're using llvm-libunwind rather than GCC's internals. Quoting myself on the bug: """ FWIW the LLVM/Clang profiles are considered pretty experimental still. For Clang, it's tricky because it depends on configuration and the (default) flags passed. Ionen points out it should be harmless dep-wise (non-invasive to users, no need to then enable static-libs for its deps) to default to +static-libs on llvm-libunwind, which would cover most cases here. I think that generally makes sense. I see three options: 1. Adding IUSE=llvm-libunwind to virtual/libc 2. Defaulting on (which doesn't feel like a full solution alone) +static-libs in llvm-libunwind 3. Making clang-common[default-compiler-rt] depend on libunwind[static-libs] (or correspondingly llvm-libunwind[static-libs] if USE=llvm-libunwind) I think 2+3 is probably a good fit? """ Bug: https://bugs.gentoo.org/892956 Signed-off-by: Sam James <sam@gentoo.org> profiles/features/llvm/package.use | 3 +++ 1 file changed, 3 insertions(+)
It's not obvious from the closed bug. Is one expected to write DEPEND=" elibc_glibc? ( sys-libs/glibc[static-libs(+)] ) " (and whatever is required for other libcs) to pull in static libraries enough for linking libc statically? I don't think DEPEND="virtual/libc" guarantees presence of enough static libraries.
I'll reopen so I don't forget to revisit.
