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Bug 617776

Summary: sys-devel/llvm-4.0.0-r2 does not install x86_64-pc-linux-gnu-prefixed CHOST binaries
Product: Gentoo Linux Reporter: Dennis Schridde <devurandom>
Component: Current packagesAssignee: LLVM support project <llvm>
Status: UNCONFIRMED ---    
Severity: normal CC: mgorny, tsmksubc
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
See Also: https://bugs.gentoo.org/show_bug.cgi?id=617744
https://bugs.gentoo.org/show_bug.cgi?id=647612
Whiteboard:
Package list:
Runtime testing required: ---

Description Dennis Schridde 2017-05-07 22:23:33 UTC
sys-devel/clang-4.0.0-r2 installs e.g. /usr/lib/llvm/4/bin/x86_64-pc-linux-gnu-clang, but sys-devel/llvm-4.0.0-r2 does not install e.g. /usr/lib/llvm/4/bin/x86_64-pc-linux-gnu-llvm-ar, similar to what sys-devel/gcc-6.3.0 does with /usr/bin/x86_64-pc-linux-gnu-gcc-ar. On the other hand, sys-devel/llvm-4.0.0-r2 installs /usr/lib/llvm/4/bin/x86_64-pc-linux-gnu-llvm-config, which appears inconsistent.

# emerge --info sys-devel/gcc sys-devel/clang sys-devel/llvm
Portage 2.3.5 (python 2.7.12-final-42, default/linux/amd64/13.0/desktop/plasma/systemd, gcc-5.4.0, glibc-2.24-r1, 4.11.0-gentoo x86_64)
=================================================================
                         System Settings
=================================================================
System uname: Linux-4.11.0-gentoo-x86_64-AMD_A10-7800_Radeon_R7,_12_Compute_Cores_4C+8G-with-gentoo-2.3
KiB Mem:    14353012 total,    433176 free
KiB Swap:          0 total,         0 free
Timestamp of repository gentoo: Sun, 07 May 2017 09:15:01 +0000
sh bash 4.4_p12
ld GNU ld (Gentoo 2.27 p1.0) 2.27
ccache version 3.3.4 [disabled]
app-shells/bash:          4.4_p12::gentoo
dev-java/java-config:     2.2.0-r3::gentoo
dev-lang/perl:            5.24.1-r1::gentoo
dev-lang/python:          2.7.13-r100::sage-on-gentoo, 3.4.6::gentoo, 3.5.3::gentoo
dev-util/ccache:          3.3.4::gentoo
dev-util/cmake:           3.8.1::gentoo
dev-util/pkgconfig:       0.29.2::gentoo
sys-apps/baselayout:      2.3::gentoo
sys-apps/sandbox:         2.10-r4::gentoo
sys-devel/autoconf:       2.13::gentoo, 2.69-r3::gentoo
sys-devel/automake:       1.11.6-r2::gentoo, 1.12.6-r1::gentoo, 1.13.4-r1::gentoo, 1.15-r2::gentoo
sys-devel/binutils:       2.27::gentoo
sys-devel/gcc:            5.4.0-r3::gentoo, 6.3.0::gentoo
sys-devel/gcc-config:     1.8-r1::gentoo
sys-devel/libtool:        2.4.6-r4::gentoo
sys-devel/make:           4.2.1-r1::gentoo
sys-kernel/linux-headers: 4.10::gentoo (virtual/os-headers)
sys-libs/glibc:           2.24-r1::gentoo
Repositories:

gentoo
    location: /var/cache/portage/gentoo
    sync-type: rsync
    sync-uri: rsync://rsync.de.gentoo.org/gentoo-portage
    priority: -1000

flatpak-overlay
    location: /var/lib/layman/flatpak-overlay
    sync-type: laymansync
    sync-uri: git://github.com/fosero/flatpak-overlay.git
    masters: gentoo
    priority: 50

kde
    location: /var/lib/layman/kde
    sync-type: laymansync
    sync-uri: git://anongit.gentoo.org/proj/kde.git
    masters: gentoo
    priority: 50

sage-on-gentoo
    location: /var/lib/layman/sage-on-gentoo
    sync-type: laymansync
    sync-uri: git://github.com/cschwan/sage-on-gentoo.git
    masters: gentoo science
    priority: 50

science
    location: /var/lib/layman/science
    sync-type: laymansync
    sync-uri: git://anongit.gentoo.org/proj/sci.git
    masters: gentoo
    priority: 50

steam-overlay
    location: /var/lib/layman/steam-overlay
    sync-type: laymansync
    sync-uri: https://github.com/anyc/steam-overlay.git
    masters: gentoo
    priority: 50

local
    location: /var/cache/portage/local
    masters: gentoo
    priority: 100

ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-pipe -O2 -march=bdver3"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /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/php/apache2-php7.1/ext-active/ /etc/php/cgi-php7.1/ext-active/ /etc/php/cli-php7.1/ext-active/ /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"
CXXFLAGS="-pipe -O2 -march=bdver3"
DISTDIR="/var/cache/portage/distfiles"
EMERGE_DEFAULT_OPTS="--keep-going --nospinner --verbose-conflicts"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs buildsyspkg cgroup compressdebug config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync network-sandbox news parallel-fetch parallel-install preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://ftp.spline.inf.fu-berlin.de/mirrors/gentoo/ http://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/ http://distfiles.gentoo.org"
LANG="en_GB.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu"
MAKEOPTS="-j3"
PKGDIR="/var/cache/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 a52 aac aacplus aacs acl acpi alsa amd64 appindicator appstream archive audit avahi bash-completion bdplus berkdb bluetooth bluray branding bs2b bzip2 cairo caps cdda cddb cdio cdr celt chromaprint cjk clang cli colord colorio conntrack cracklib crypt cups cxx d3d9 dbus declarative dirac dri dts dvb dvd dvdr egl emboss encode exif fam fax ffmpeg fftw firefox fits flac fontconfig fortran fribidi gdbm geoclue geolocation gif git glamor gles gmp google googledrive gpm gstreamer gtk gtk3 harfbuzz ibus iconv icu idn inotify introspection ipv6 jemalloc jpeg jpeg2k kde kipi kwallet ladspa latex lcms ldap libinput libnotify libproxy libsecret libsoxr lua_target_lua5-2 lv2 lz4 lzma lzo mad mercurial metis mjpeg mng modemmanager modplug modules mp3 mp4 mpeg mplayer mtp multilib mysql ncurses netlink networkmanager nls nptl ogg openal opencl opencv openexr opengl openmax openmp opus pam pango pcap pch pcre pcre2 pdf phonon plasma png policykit postscript ppds prison pulseaudio python qml qt3support qt4 qt5 raw readline rtmp samba scanner schroedinger sctp sdl seccomp semantic-desktop session sparse speech speex spell ssl startup-notification svg systemd tbb tcpd telepathy theora threads tiff timezone truetype tslib udev udisks unicode unwind upnp upnp-av upower usb v4l v4l2 vaapi vdpau vorbis vpx vulkan wavpack wayland webp widgets x264 x265 xattr xcb xcomposite xinerama xkb xml xmp xrandr xscreensaver xv xvid xz zeroconf zlib" ABI_X86="64" ALSA_CARDS="hda-intel" 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_EXPERIMENTAL_FEATURES="stage" CALLIGRA_FEATURES="words sheets karbon plan" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx f16c fma3 fma4 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 xop" ELIBC="glibc" ENLIGHTENMENT_MODULES="*" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="efi-64" INPUT_DEVICES="joystick libinput" KERNEL="linux" L10N="de en en-GB ar fa tr ja ko zh zh-CN zh-TW" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="de en en_GB ar fa tr" LIRC_DEVICES="devinput" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6" PYTHON_SINGLE_TARGET="python3_4" PYTHON_TARGETS="python2_7 python3_4 python3_5 pypy pypy3" RUBY_TARGETS="ruby21 ruby22" 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:  CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON

=================================================================
                        Package Settings
=================================================================

sys-devel/gcc-5.4.0-r3::gentoo was built with the following:
USE="cilk cxx fortran gcj go graphite mpx (multilib) nls nptl openmp (policykit) sanitize vtv (-altivec) (-awt) -debug -doc (-fixed-point) (-hardened) (-jit) (-libssp) -nopie -nossp -objc -objc++ -objc-gc -regression-test -vanilla" ABI_X86="64"


sys-devel/gcc-6.3.0::gentoo was built with the following:
USE="cilk cxx fortran go graphite mpx (multilib) nls nptl openmp pch pie (policykit) sanitize ssp vtv (-altivec) (-awt) -debug -doc (-fixed-point) (-gcj) (-hardened) (-jit) (-libssp) -objc -objc++ -objc-gc -regression-test -vanilla" ABI_X86="64"


sys-devel/clang-4.0.0-r2::gentoo was built with the following:
USE="default-compiler-rt default-libcxx doc static-analyzer xml -debug -multitarget -test" ABI_X86="32 64 -x32" LLVM_TARGETS="AMDGPU BPF NVPTX X86 -AArch64 -ARM -Hexagon -Lanai -MSP430 -Mips -PowerPC -RISCV -Sparc -SystemZ -XCore" PYTHON_TARGETS="python2_7"


sys-devel/llvm-4.0.0-r2::gentoo was built with the following:
USE="doc gold libffi ncurses -debug -libedit -test" ABI_X86="32 64 -x32" LLVM_TARGETS="AMDGPU BPF NVPTX X86 -AArch64 -ARM -Hexagon -Lanai -MSP430 -Mips -PowerPC -RISCV -Sparc -SystemZ -XCore"
Comment 1 Dennis Schridde 2017-05-07 22:25:19 UTC
P.S. Some build systems expect the ctarget-prefixed binaries to be present and working around the lack of those tools is not always easy, hence it would be great if Gentoo would provide them, at least as symlinks, as is done for clang.
Comment 2 Michał Górny archtester Gentoo Infrastructure gentoo-dev Security 2017-05-08 15:37:22 UTC
Would you be able to figure out a somehow complete list of what needs to be prefixed? clang is prefixed since it magically alters the target it sets. I don't think llvm-ar really cares about that though.
Comment 3 Dennis Schridde 2017-05-23 08:09:38 UTC
(In reply to Michał Górny from comment #2)
> Would you be able to figure out a somehow complete list of what needs to be
> prefixed? clang is prefixed since it magically alters the target it sets. I
> don't think llvm-ar really cares about that though.

I just looked at the x86_64-pc-linux-gnu- prefixed binaries from GCC and compared them to the CLang binaries (llvm-ar, llvm-as, llvm-link, ...), and assumed they should match.
Comment 4 Michał Górny archtester Gentoo Infrastructure gentoo-dev Security 2017-05-31 18:35:22 UTC
(In reply to Dennis Schridde from comment #3)
> (In reply to Michał Górny from comment #2)
> > Would you be able to figure out a somehow complete list of what needs to be
> > prefixed? clang is prefixed since it magically alters the target it sets. I
> > don't think llvm-ar really cares about that though.
> 
> I just looked at the x86_64-pc-linux-gnu- prefixed binaries from GCC and
> compared them to the CLang binaries (llvm-ar, llvm-as, llvm-link, ...), and
> assumed they should match.

GCC doesn't include ar, as etc. Binutils do. By default, clang uses binutils linker and LLVM installs a plugin for binutils ar/ranlib/etc.
Comment 5 Dennis Schridde 2017-06-01 05:36:23 UTC
(In reply to Michał Górny from comment #4)
> GCC doesn't include ar, as etc. Binutils do. By default, clang uses binutils
> linker and LLVM installs a plugin for binutils ar/ranlib/etc.

So I do not need `llvm-ar` and `llvm-link` at all, but instead simply use `x86_64-pc-linux-gnu-ar` and `x86_64-pc-linux-gnu-ld`?
Comment 6 Michał Górny archtester Gentoo Infrastructure gentoo-dev Security 2017-06-01 07:18:32 UTC
Yes, for all normal uses that's fine. If you want to use LTO, then you also need to build llvm with USE=gold (I should probably rename the flag since nowadays bfd supports plugins too)