Created attachment 921788 [details] dev-cpp/fizz build.log dev-cpp/folly itself builds fine with libc++20, however it causes downstream failures in (e.g.) dev-cpp/fizz due to the use of functionality that was removed in libc++20. This is tracked upstream and a PR is open, but has not yet been merged. I've added the issue and the PR to See Also. I can confirm that applying the linked PR as a patch to dev-cpp/folly (in /etc/portage/patches) allows me to build dev-cpp/fizz successfully. ---------------- emerge --info dev-cpp/folly: Portage 3.0.67 (python 3.13.2-final-0, default/linux/amd64/23.0/llvm/systemd, gcc-15, glibc-2.41-r1, 6.13.7-gentoo-x86_64.vhz x86_64) ================================================================= System Settings ================================================================= System uname: Linux-6.13.7-gentoo-x86_64.vhz-x86_64-AMD_Ryzen_7_5800X_8-Core_Processor-with-glibc2.41 KiB Mem: 32773628 total, 12217080 free KiB Swap: 50331644 total, 50290536 free Timestamp of repository gentoo: Fri, 21 Mar 2025 11:45:00 +0000 Head commit of repository gentoo: 09e62af1564b77db9951ac837376abd89ccd4436 Timestamp of repository guru: Thu, 20 Mar 2025 11:33:31 +0000 Head commit of repository guru: bba937232305c649e1daef0bd83d17259d6ce297 sh bash 5.2_p37 ld GNU ld (Gentoo 2.44 p1) 2.44.0 app-misc/pax-utils: 1.3.8::gentoo app-shells/bash: 5.2_p37::gentoo dev-build/autoconf: 2.72-r1::gentoo dev-build/automake: 1.16.5-r2::gentoo, 1.17-r2::gentoo dev-build/cmake: 3.31.6-r1::gentoo dev-build/libtool: 2.5.4::gentoo dev-build/make: 4.4.1-r100::gentoo dev-build/meson: 1.7.0::gentoo dev-lang/perl: 5.40.1::gentoo dev-lang/python: 3.12.9::gentoo, 3.13.2::gentoo dev-lang/rust: 1.85.0-r1::gentoo, 1.86.0_beta20250225::gentoo, 9999::gentoo llvm-core/clang: 18.1.8-r6::gentoo, 19.1.7::gentoo, 20.1.1::gentoo llvm-core/lld: 18.1.8::gentoo, 19.1.7::gentoo, 20.1.1::gentoo llvm-core/llvm: 18.1.8-r6::gentoo, 19.1.7::gentoo, 20.1.1::gentoo sys-apps/baselayout: 2.17::gentoo sys-apps/sandbox: 2.45::gentoo sys-apps/systemd: 257.3::gentoo sys-devel/binutils: 2.44::gentoo sys-devel/binutils-config: 5.5.2::gentoo sys-devel/gcc: 15.0.1_pre20250316::gentoo sys-devel/gcc-config: 2.12.1::gentoo sys-kernel/linux-headers: 6.13::gentoo (virtual/os-headers) sys-libs/glibc: 2.41-r1::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 volatile: False sync-rsync-extra-opts: sync-rsync-verify-jobs: 1 sync-rsync-verify-metamanifest: yes sync-rsync-verify-max-age: 3 demize-testing location: /var/db/repos/demize-testing masters: gentoo volatile: True guru location: /var/db/repos/guru sync-type: git sync-uri: https://github.com/gentoo-mirror/guru.git masters: gentoo volatile: False Binary Repositories: gentoobinhost priority: 1 sync-uri: rsync://mirror.csclub.uwaterloo.ca/gentoo-distfiles/releases/amd64/binpackages/23.0/x86-64_llvm ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="*" ADDR2LINE="llvm-addr2line" AR="llvm-ar" AS="clang -c" CBUILD="x86_64-pc-linux-gnu" CC="clang" CFLAGS="-march=native -O2 -pipe -flto -Werror=odr -Werror=strict-aliasing" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /var/bind" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d" CPP="clang-cpp" CXX="clang++" CXXFLAGS="-march=native -O2 -pipe -flto -Werror=odr -Werror=strict-aliasing" DISTDIR="/var/cache/distfiles" EMERGE_DEFAULT_OPTS="-j3 -l20" 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="-march=native -O2 -pipe -flto -Werror=odr -Werror=strict-aliasing" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync merge-wait multilib-strict network-sandbox news parallel-fetch pid-sandbox pkgdir-index-trusted preserve-libs protect-owned qa-unresolved-soname-deps sandbox strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-march=native -O2 -pipe -flto -Werror=odr -Werror=strict-aliasing" GENTOO_MIRRORS="rsync://mirror.csclub.uwaterloo.ca/gentoo-distfiles rsync://mirrors.rit.edu/gentoo/" LANG="en_US.utf8" LD="ld.lld" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,--as-needed" LEX="flex" MAKEOPTS="-j14 -l14" 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="/var/tmp" RANLIB="llvm-ranlib" READELF="llvm-readelf" SHELL="/bin/fish" STRINGS="llvm-strings" STRIP="llvm-strip" USE="X acl alsa amd64 bzip2 cet clang crypt cups dbus ffmpeg flac gdbm harfbuzz iconv icu ipv6 jpeg kde libtirpc llvm-libunwind lto multilib ncurses nls ogg opengl openmp opus pam pcre pipewire png policykit pulseaudio qml qt6 readline screencast seccomp ssl systemd test-rust udev unicode v4l vulkan wayland xattr zlib" ABI_X86="64" ADA_TARGET="gcc_14" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_anon authn_dbm authn_file authz_dbm authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir env expires ext_filter file_cache filter headers include info log_config logio 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 aes avx avx2 f16c fma3 pclmul popcnt rdrand sha sse3 sse4_1 sse4_2 sse4a ssse3 vpclmulqdq" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax navcom oceanserver oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 tsip tripmate tnt ublox" GUILE_SINGLE_TARGET="3-0" GUILE_TARGETS="3-0" INPUT_DEVICES="libinput" KERNEL="linux" L10N="en en-CA en-US ja" LCD_DEVICES="bayrad cfontz glk hd44780 lb216 lcdm001 mtxorb text" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php8-2" POSTGRES_TARGETS="postgres16" PYTHON_SINGLE_TARGET="python3_13" PYTHON_TARGETS="python3_12 python3_13" RUBY_TARGETS="ruby32" VIDEO_CARDS="nvidia" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipp2p iface geoip fuzzy condition tarpit sysrq proto logmark ipmark dhcpmac delude chaos account" Unset: ARFLAGS, ASFLAGS, CCLD, CONFIG_SHELL, CPPFLAGS, CTARGET, CXXFILT, ELFEDIT, 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, PYTHONPATH, RUSTFLAGS, SIZE, YACC, YFLAGS ================================================================= Package Settings ================================================================= dev-cpp/folly-2024.11.04.00-r2::gentoo was built with the following: USE="(llvm-libunwind) -test" ABI_X86="(64)" ---------------- I've attached a sample build.log of a dev-cpp/fizz failure as well.
