It looks like the PCH CMakeFiles/MachineIndependent.dir/cmake_pch.hxx.pch was compiled with different flags than the rest of the code. My CPU doesn't support the LWP instruction set, so it's confusing how this could occur. See *Actual Results* below and the attached build log. I noticed that if I go into the build directory and run `sudo -u portage ninja -j10` repeatedly, it eventually builds, suggesting some sort of race condition (I noticed that the PCH target file was cmake_pch.hxx.cxx, which seems like it should be cmake_pch.hxx.pch?). I think that the PCH file doesn't complete building before other targets begin using it. Regardless, an easy fix is to disable PCH, and the build provided an option for that: --- glslang-10.11.0.0_pre20200924.ebuild.old 2020-12-19 12:24:27.837598623 -0800 +++ glslang-10.11.0.0_pre20200924.ebuild 2020-12-19 12:16:41.324580528 -0800 @@ -28,3 +28,5 @@ # Bug 698850 RESTRICT="test" + +MYCMAKEARGS="-DENABLE_PCH=OFF" Reproducible: Always Actual Results: [16/69] /usr/lib/llvm/11/bin/clang++ -DENABLE_HLSL -DENABLE_OPT=0 -DGLSLANG_OSINCLUDE_UNIX -Iinclude -march=native -mno-xop -O3 -pipe -flto=thin -fPIC -Wall -Wuninitialized -Wunused -Wunused-local-typedefs -Wunused-parameter -Wunused-value -Wunused-variable -Wno-reorder -fno-rtti -fno-exceptions -pthread -std=c++11 -Xclang -include-pch -Xclang /var/tmp/portage/dev-util/glslang-10.11.0.0_pre20200924/work/glslang-10.11.0.0_pre20200924_build-abi_x86_64.amd64/glslang/CMakeFiles/MachineIndependent.dir/cmake_pch.hxx.pch -Xclang -include -Xclang /var/tmp/portage/dev-util/glslang-10.11.0.0_pre20200924/work/glslang-10.11.0.0_pre20200924_build-abi_x86_64.amd64/glslang/CMakeFiles/MachineIndependent.dir/cmake_pch.hxx -MD -MT glslang/CMakeFiles/MachineIndependent.dir/MachineIndependent/attribute.cpp.o -MF glslang/CMakeFiles/MachineIndependent.dir/MachineIndependent/attribute.cpp.o.d -o glslang/CMakeFiles/MachineIndependent.dir/MachineIndependent/attribute.cpp.o -c /var/tmp/portage/dev-util/glslang-10.11.0.0_pre20200924/work/glslang-bacaef3237c515e40d1a24722be48c0a0b30f75f/glslang/MachineIndependent/attribute.cpp FAILED: glslang/CMakeFiles/MachineIndependent.dir/MachineIndependent/attribute.cpp.o /usr/lib/llvm/11/bin/clang++ -DENABLE_HLSL -DENABLE_OPT=0 -DGLSLANG_OSINCLUDE_UNIX -Iinclude -march=native -mno-xop -O3 -pipe -flto=thin -fPIC -Wall -Wuninitialized -Wunused -Wunused-local-typedefs -Wunused-parameter -Wunused-value -Wunused-variable -Wno-reorder -fno-rtti -fno-exceptions -pthread -std=c++11 -Xclang -include-pch -Xclang /var/tmp/portage/dev-util/glslang-10.11.0.0_pre20200924/work/glslang-10.11.0.0_pre20200924_build-abi_x86_64.amd64/glslang/CMakeFiles/MachineIndependent.dir/cmake_pch.hxx.pch -Xclang -include -Xclang /var/tmp/portage/dev-util/glslang-10.11.0.0_pre20200924/work/glslang-10.11.0.0_pre20200924_build-abi_x86_64.amd64/glslang/CMakeFiles/MachineIndependent.dir/cmake_pch.hxx -MD -MT glslang/CMakeFiles/MachineIndependent.dir/MachineIndependent/attribute.cpp.o -MF glslang/CMakeFiles/MachineIndependent.dir/MachineIndependent/attribute.cpp.o.d -o glslang/CMakeFiles/MachineIndependent.dir/MachineIndependent/attribute.cpp.o -c /var/tmp/portage/dev-util/glslang-10.11.0.0_pre20200924/work/glslang-bacaef3237c515e40d1a24722be48c0a0b30f75f/glslang/MachineIndependent/attribute.cpp error: AST file was compiled with the target feature '-lwp' but the current translation unit is not error: current translation unit is compiled with the target feature '+lwp' but the AST file was not 2 errors generated. Portage 3.0.9 (python 3.9.0-final-0, default/linux/amd64/17.1, gcc-9.3.0, glibc-2.32-r3, 5.10.0-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-5.10.0-gentoo-x86_64-AMD_FX-tm-8150_Eight-Core_Processor-with-glibc2.32 KiB Mem: 16407372 total, 8423232 free KiB Swap: 33554428 total, 33543860 free Timestamp of repository gentoo: Sat, 19 Dec 2020 01:45:01 +0000 Head commit of repository gentoo: cdf57f779c7c6d4950229619bfbc46b33a6d69e4 sh bash 5.0_p18 ld GNU ld (Gentoo 2.34 p6) 2.34.0 app-shells/bash: 5.0_p18::gentoo dev-java/java-config: 2.3.1::gentoo dev-lang/perl: 5.30.3::gentoo dev-lang/python: 2.7.18-r4::gentoo, 3.8.7_rc1::local, 3.9.0::local dev-util/cmake: 3.17.4-r1::gentoo sys-apps/baselayout: 2.7::gentoo sys-apps/openrc: 0.42.1::gentoo sys-apps/sandbox: 2.20::gentoo sys-devel/autoconf: 2.13-r1::gentoo, 2.69-r5::gentoo sys-devel/automake: 1.16.2-r1::gentoo sys-devel/binutils: 2.34-r2::gentoo sys-devel/gcc: 9.3.0-r2::gentoo sys-devel/gcc-config: 2.3.2-r1::gentoo sys-devel/libtool: 2.4.6-r6::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 5.4-r1::gentoo (virtual/os-headers) sys-libs/glibc: 2.32-r3::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.us.gentoo.org/gentoo-portage priority: -1000 sync-rsync-verify-metamanifest: yes sync-rsync-verify-max-age: 24 sync-rsync-verify-jobs: 1 sync-rsync-extra-opts: local location: /usr/local/portage masters: gentoo libressl location: /var/lib/layman/libressl masters: gentoo priority: 50 steam-overlay location: /var/lib/layman/steam-overlay masters: gentoo priority: 50 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="@FREE" CBUILD="x86_64-pc-linux-gnu" CC="clang" CFLAGS="-march=native -mno-xop -O3 -pipe -flto=thin" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/gnupg/qualified.txt" 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 /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXX="clang++" CXXFLAGS="-march=native -mno-xop -O3 -pipe -flto=thin" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--with-bdeps y" 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=native -mno-xop -O3 -pipe -flto=thin" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks 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="-march=native -mno-xop -O3 -pipe -flto=thin" GENTOO_MIRRORS="http://gentoo.osuosl.org/" LANG="en_US.utf8" LDFLAGS="-Wl,-O3 -fuse-ld=lld -rtlib=compiler-rt" MAKEOPTS="-j9" PKGDIR="/usr/portage/packages" 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" USE="X acl amd64 berkdb bzip2 cli crypt dri fontconfig iconv icu idn ipv6 libedit libglvnd libressl libtirpc lzma maildir mmx multilib ncurses nls nptl openmp pam pcre pic seccomp split-usr sse sse2 ssl tcpd udev unicode vim-syntax wayland xattr xcb zlib zsh-completion zstd" ABI_X86="64" ADA_TARGET="gnat_2018" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" 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" CAMERAS="canon" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx fma4 mmx mmxext pclmul popcnt sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3" CURL_SSL="libressl" 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" GRUB_PLATFORMS="pc" INPUT_DEVICES="evdev keyboard libinput mouse" KERNEL="linux" L10N="de en fr nb nn no" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LLVM_TARGETS="AMDGPU" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2 php7-3 php7-4" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_8" PYTHON_TARGETS="python3_8 python3_9" RUBY_TARGETS="ruby26" USERLAND="GNU" VIDEO_CARDS="amdgpu" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS ================================================================= Package Settings ================================================================= dev-util/glslang-10.11.0.0_pre20200924::gentoo was built with the following: USE="" ABI_X86="(64) -32 (-x32)"
Created attachment 678838 [details] build.log
Created attachment 678841 [details, diff] glslang-10.11.0.0_pre20200924.ebuild.patch This is the same patch from the bug description. It just adds ENABLE_PCH=OFF to the cmake options.
I don't know what is going on but given this codebase, a race condition seems possible and the remedy is minor Can you make a pull request please? https://wiki.gentoo.org/wiki/GitHub_Pull_Requests#Step_1:_User_updates_the_local_repository
Is this still reproducible?
Note that the ebuild turns off PCH now anyway as we avoid it in Gentoo.
