My test x86 mold machine is failing to compile cmake with error: 'CMake Error at CMakeLists.txt:112 (message): The C++ compiler does not support C++11 (e.g. std::unique_ptr).' This is being upstreamed currently so this bug is for the mold tracker until I can supply the best solution. https://github.com/rui314/mold/issues/718 Reproducible: Always Steps to Reproduce: 1. Add mold ldflags 2. emerge -va dev-utils/cmake Actual Results: 'CMake Error at CMakeLists.txt:112 (message): The C++ compiler does not support C++11 (e.g. std::unique_ptr).' Patching the test out or filtering mold out does seem to fix it but more testing is needed before moving forward.
emerge --info Portage 3.0.36 (python 3.10.7-final-0, default/linux/x86/17.0/musl, gcc-12.2.0, musl-1.2.3-r3, 5.18.18-gentoo-dist x86_64) ================================================================= System uname: Linux-5.18.18-gentoo-dist-x86_64-Intel-R-_Core-TM-_i7-6700K_CPU_@_4.00GHz-with-libc KiB Mem: 16349108 total, 5476840 free KiB Swap: 16777212 total, 11210736 free Timestamp of repository gentoo: Sun, 18 Sep 2022 15:30:01 +0000 Head commit of repository gentoo: 97de4d962698fdc96c6be0f1f9e157c1fffb2361 sh bash 5.1_p16-r2 ld GNU ld (Gentoo 2.38 p4) 2.38 app-misc/pax-utils: 1.3.5::gentoo app-shells/bash: 5.1_p16-r2::gentoo dev-lang/perl: 5.36.0::gentoo dev-lang/python: 3.10.7::gentoo, 3.11.0_rc2::gentoo dev-util/cmake: 3.24.2::gentoo dev-util/meson: 0.63.2-r1::gentoo sys-apps/baselayout: 2.8-r3::gentoo sys-apps/openrc: 0.45.2::gentoo sys-apps/sandbox: 2.29::gentoo sys-devel/autoconf: 2.71-r2::gentoo sys-devel/automake: 1.16.5::gentoo sys-devel/binutils: 2.38-r2::gentoo, 2.39-r2::gentoo sys-devel/binutils-config: 5.4.1::gentoo sys-devel/gcc: 11.3.0::gentoo, 12.2.0::gentoo sys-devel/gcc-config: 2.5-r1::gentoo sys-devel/libtool: 2.4.7::gentoo sys-devel/make: 4.3::gentoo sys-kernel/linux-headers: 5.19::gentoo (virtual/os-headers) sys-libs/musl: 1.2.3-r3::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 sync-rsync-verify-max-age: 24 sync-rsync-extra-opts: sync-rsync-verify-jobs: 1 sync-rsync-verify-metamanifest: yes ACCEPT_KEYWORDS="x86 ~x86" ACCEPT_LICENSE="@FREE" CBUILD="i686-gentoo-linux-musl" CFLAGS="-march=atom -Os -pipe -fgraphite-identity -floop-nest-optimize -flto=2 -fuse-linker-plugin -falign-functions=32 -fomit-frame-pointer" CHOST="i686-gentoo-linux-musl" 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 /etc/terminfo" CXXFLAGS="-march=atom -Os -pipe -fgraphite-identity -floop-nest-optimize -flto=2 -fuse-linker-plugin -falign-functions=32 -fomit-frame-pointer" DISTDIR="/var/cache/distfiles" ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY 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" FCFLAGS="-march=atom -Os -pipe -fgraphite-identity -floop-nest-optimize -flto=2 -fuse-linker-plugin -falign-functions=32 -fomit-frame-pointer" 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 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="-march=atom -Os -pipe -fgraphite-identity -floop-nest-optimize -flto=2 -fuse-linker-plugin -falign-functions=32 -fomit-frame-pointer" GENTOO_MIRRORS="http://distfiles.gentoo.org" INSTALL_MASK="charset.alias /usr/share/locale/locale.alias" LANG="C.UTF8" LDFLAGS="-fuse-ld=mold -Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j8" 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" SHELL="/bin/bash" USE="acl bzip2 cli crypt dri fortran graphite iconv ipv6 libglvnd libtirpc lto ncurses nls nptl openmp pam pcre pgo pic readline seccomp split-usr ssl unicode x86 xattr zlib" ABI_X86="32" ADA_TARGET="gnat_2020" 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" ELIBC="musl" 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" 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: ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EMERGE_DEFAULT_OPTS, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, LC_ALL, LD, LEX, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, RANLIB, READELF, RUSTFLAGS, SIZE, STRINGS, STRIP, YACC, YFLAGS
Created attachment 812389 [details] Build.log
Created attachment 812392 [details] CMakeError.log
Created attachment 812395 [details] CMakeOutput.log
I've now confirmed this issue only exists on x86 so it doesn't current effect Gentoo as long as mold isn't keyworded for x86. For clarity though, I've tested this on an ~amd64 test environment now and the issue doesn't crop up which has also been confirmed to be working with x86_64 on Gentoo.
*** This bug has been marked as a duplicate of bug 870760 ***
