Was upgrading and igt-gpu-tools failed to compile. Enabling nolto.conf for the package let it successfully compile, so it seems to be an lto issue (sam also suggested it was). Reproducible: Always Steps to Reproduce: 1.Enable LTO for x11-apps/igt-gpu-tools 2.$ emerge -v x11-apps/igt-gpu-tools Actual Results: igt-gpu-tools fails to emerge: ... /usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: /var/tmp/portage/x11-apps/igt-gpu-tools-1.29/temp/ccmfK6WX.ltrans5.ltrans.o: in function `gpgpu_shader__eot': <artificial>:(.text+0x4ecb): undefined reference to `iga64_code_eot' /usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: /var/tmp/portage/x11-apps/igt-gpu-tools-1.29/temp/ccmfK6WX.ltrans5.ltrans.o: in function `gpgpu_shader__write_dword': <artificial>:(.text+0x4f3e): undefined reference to `iga64_code_media_block_write' /usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: /var/tmp/portage/x11-apps/igt-gpu-tools-1.29/temp/ccmfK6WX.ltrans5.ltrans.o: in function `xehp_gpgpu_fillfunc': <artificial>:(.text+0xb3f8): undefined reference to `iga64_code_gpgpu_fill' collect2: error: ld returned 1 exit status [417/661] x86_64-pc-linux-gnu-gcc -Ilib/libxe_o ... ninja: build stopped: subcommand failed. * ERROR: x11-apps/igt-gpu-tools-1.29::gentoo failed (compile phase): * ninja -v -j8 -l8 failed * * Call stack: * ebuild.sh, line 136: Called src_compile * environment, line 2854: Called meson_src_compile * environment, line 2031: Called eninja * environment, line 1454: Called die * The specific snippet of code: * "$@" || die -n "${*} failed" * * If you need support, post the output of `emerge --info '=x11-apps/igt-gpu-tools-1.29::gentoo'`, * the complete build log and the output of `emerge -pqv '=x11-apps/igt-gpu-tools-1.29::gentoo'`. * The complete build log is located at '/var/tmp/portage/x11-apps/igt-gpu-tools-1.29/temp/build.log'. * The ebuild environment file is located at '/var/tmp/portage/x11-apps/igt-gpu-tools-1.29/temp/environment'. * Working directory: '/var/tmp/portage/x11-apps/igt-gpu-tools-1.29/work/igt-gpu-tools-1.29-build' * S: '/var/tmp/portage/x11-apps/igt-gpu-tools-1.29/work/igt-gpu-tools-1.29' Expected Results: igt-gpu-tools should emerge successfully. $ emerge --info '=x11-apps/igt-gpu-tools-1.29::gentoo' Portage 3.0.65 (python 3.12.3-final-0, default/linux/amd64/23.0, gcc-13, glibc-2.39-r6, 6.6.47-gentoo-dist x86_64) ================================================================= System Settings ================================================================= System uname: Linux-6.6.47-gentoo-dist-x86_64-12th_Gen_Intel-R-_Core-TM-_i3-12100-with-glibc2.39 KiB Mem: 32633508 total, 4734332 free KiB Swap: 33554428 total, 29090848 free Timestamp of repository gentoo: Fri, 06 Sep 2024 14:49:02 +0000 Head commit of repository gentoo: 01a8196faadefd142e3b93501212dba0beb911a8 Timestamp of repository guru: Fri, 06 Sep 2024 09:04:07 +0000 Head commit of repository guru: fa154fddc2f32e212c4330eb5992f2e5155ac361 sh bash 5.2_p26-r6 ld GNU ld (Gentoo 2.42 p3) 2.42.0 app-misc/pax-utils: 1.3.7::gentoo app-shells/bash: 5.2_p26-r6::gentoo dev-build/autoconf: 2.71-r7::gentoo dev-build/automake: 1.16.5-r2::gentoo dev-build/cmake: 3.30.2::gentoo dev-build/libtool: 2.4.7-r4::gentoo dev-build/make: 4.4.1-r1::gentoo dev-build/meson: 1.5.1::gentoo dev-lang/perl: 5.40.0::gentoo dev-lang/python: 3.11.9_p2::gentoo, 3.12.3-r1::gentoo dev-lang/rust-bin: 1.79.0::gentoo sys-apps/baselayout: 2.15::gentoo sys-apps/openrc: 0.54.2::gentoo sys-apps/sandbox: 2.38::gentoo sys-devel/binutils: 2.42-r1::gentoo sys-devel/binutils-config: 5.5::gentoo sys-devel/clang: 15.0.7-r3::gentoo, 18.1.8::gentoo sys-devel/gcc: 13.3.1_p20240614::gentoo sys-devel/gcc-config: 2.11::gentoo sys-devel/lld: 15.0.7::gentoo sys-devel/llvm: 15.0.7-r3::gentoo, 18.1.8-r1::gentoo sys-kernel/linux-headers: 6.6-r1::gentoo (virtual/os-headers) sys-libs/glibc: 2.39-r6::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: git sync-uri: https://github.com/gentoo-mirror/gentoo.git priority: -1000 volatile: False 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: https://mirror.leaseweb.com/gentoo/releases/amd64/binpackages/23.0/x86-64-v3 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=native -flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing" 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/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d" CXXFLAGS="-O2 -pipe -march=native -flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing" DISTDIR="/var/cache/distfiles" EMERGE_DEFAULT_OPTS=" --binpkg-respect-use=y" 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 -march=native -flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance binpkg-request-signature buildpkg-live config-protect-if-modified distlocks ebuild-locks fixlafiles getbinpkg 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 sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe -march=native -flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,-z,pack-relative-relocs" LEX="flex" MAKEOPTS="-j8 -l8" 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" RUSTFLAGS="-C opt-level=2 -C target-cpu=native" SHELL="/bin/bash" USE="acl amd64 bzip2 cet crypt dist-kernel gdbm iconv ipv6 libtirpc lto modules-sign multilib ncurses nls openmp pam pcre readline seccomp ssl test-rust unicode xattr zlib zsh-completion" ABI_X86="64" ADA_TARGET="gcc_12" 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 ssse3 vpclmulqdq" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 ntrip 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" 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="postgres15" PYTHON_SINGLE_TARGET="python3_12" PYTHON_TARGETS="python3_12" RUBY_TARGETS="ruby31 ruby32" VIDEO_CARDS="intel" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipp2p iface geoip fuzzy condition tarpit sysrq proto logmark ipmark dhcpmac delude chaos account" Unset: ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, INSTALL_MASK, LC_ALL, LD, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PYTHONPATH, RANLIB, READELF, SIZE, STRINGS, STRIP, YACC, YFLAGS
$ emerge -pqv '=x11-apps/igt-gpu-tools-1.29::gentoo' [ebuild U ] x11-apps/igt-gpu-tools-1.29 [1.28-r1] USE="-X -chamelium -doc -man -overlay -runner -tests -unwind -valgrind -xv" VIDEO_CARDS="intel -amdgpu -nouveau"
Created attachment 902254 [details] build.log
I'm unable to reproduce this. And e.g. the first missing symbol appears to be in lib/gpgpu_shader.c exactly where it belongs (+ in the corresponding object file).
[272/673] /var/tmp/portage/x11-apps/igt-gpu-tools-1.29/work/igt-gpu-tools-1.29/scripts/generate_iga64_codes -o lib/iga64_generated_codes.c -i ../igt-gpu-tools-1.29/lib/iga64_generated_codes.c lib/libigt-gpgpu_fill_c.a lib/libigt-gpgpu_shader_c.a objcopy: lib/libigt-gpgpu_fill_c.a.p/gpgpu_fill.c.o: can't dump section '.iga64_assembly' - it does not exist: file format not recognized objcopy: lib/libigt-gpgpu_shader_c.a.p/gpgpu_shader.c.o: can't dump section '.iga64_assembly' - it does not exist: file format not recognized /var/tmp/portage/x11-apps/igt-gpu-tools-1.29/work/igt-gpu-tools-1.29/scripts/generate_iga64_codes: line 52: type: iga64: not found WARNING: iga64 assemblies changed, but iga64 compiler not present, CHANGES will have no effect. Install iga64 (libigc-tools package) to re-compile code. It appears this package is missing a critical BDEPEND that would make me actually able to reproduce what other people are seeing. Discovered as part of an IRC debugging session with another user. The error likely comes from the objcopy issue since it cannot read the compiler bytecode format.
Also, the generate_iga64_codes script is performing a couple other worrying tactics, such as referencing input files without using the meson.current_source_dir(), just "../" And invoking `cpp` which may or may not work depending on native-symlinks support and definitely doesn't handle clang-cpp. Of course this *might* not matter if the expectation is that you only need to generate iga64 codes when developing the project (?) but for dist tarballs it should be distributed? Unclear to me exactly what the upstream project is doing but I didn't poke around too much. It is certainly very flaky regardless.
