I had an weird error when merge new llvm. I tried with gcc and llvm-3.4.2, but the same error: /Users/dom/Gentoo/var/tmp/portage/sys-devel/llvm-3.5.2/work/llvm-3.5.2.src/projects/compiler-rt/lib/builtins/arm/sync_fetch_and_and_8.S:21 : 230 : error: instruction requires: !armv*m `emerge -pqv '=sys-devel/llvm-3.5.2::gentoo_prefix'` [ebuild U ] sys-devel/llvm-3.5.2 [3.4.2] USE="(clang) libffi ncurses static-analyzer -debug -doc -gold -libedit% -multitarget -ocaml -python {-test} -xml (-cmake%) (-udis86%)" PYTHON_TARGETS="python2_7 (-pypy)" VIDEO_CARDS="-radeon" [ebuild U ] sys-devel/clang-3.5.2-r100 [3.4.2-r100] USE="static-analyzer -debug -multitarget -python" [blocks b ] <=sys-devel/clang-3.5.2-r99 ("<=sys-devel/clang-3.5.2-r99" is blocking sys-devel/llvm-3.5.2) `emerge --info '=sys-devel/llvm-3.5.2::gentoo_prefix'`: Portage 2.2.20-prefix (python 2.7.11-final-0, prefix/darwin/macos/10.11/x64, gcc-4.2.1, unavailable, 15.2.0 x86_64) ================================================================= System Settings ================================================================= System uname: Darwin-15.2.0-x86_64-i386-64bit Timestamp of repository gentoo_prefix: Sat, 19 Dec 2015 02:46:03 +0000 sh bash 4.3_p39 app-shells/bash: 4.3_p39::gentoo_prefix dev-lang/perl: 5.22.0::gentoo_prefix dev-lang/python: 2.7.11::gentoo_prefix dev-util/cmake: 3.4.1::gentoo_prefix dev-util/pkgconfig: 0.29::gentoo_prefix sys-devel/autoconf: 2.69::gentoo_prefix sys-devel/automake: 1.14.1::gentoo_prefix, 1.15::gentoo_prefix sys-devel/binutils: 2.21.1-r1::gentoo_prefix sys-devel/gcc-config: 1.8-r1::gentoo_prefix sys-devel/libtool: 2.4.6-r1::gentoo_prefix sys-devel/make: 4.1-r1::gentoo_prefix Repositories: gentoo_prefix location: /Users/dom/Gentoo/usr/portage sync-type: rsync sync-uri: rsync://rsync.prefix.bitzolder.nl/gentoo-portage-prefix priority: -1000 aliases: gentoo ACCEPT_KEYWORDS="~x64-macos" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-apple-darwin15" CC="clang" CFLAGS="-march=nocona -O2 -pipe" CHOST="x86_64-apple-darwin15" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/terminfo" CXX="clang++" CXXFLAGS="-march=nocona -O2 -pipe" DISTDIR="/Users/dom/Gentoo/usr/portage/distfiles" FCFLAGS="" FEATURES="assume-digests binpkg-logs case-insensitive-fs collision-protect config-protect-if-modified distlocks ebuild-locks fixlafiles force-prefix merge-sync news nostrip parallel-fetch preserve-libs protect-owned sfperms strict unknown-features-warn unmerge-logs unmerge-orphans unprivileged userfetch userpriv usersandbox usersync" FFLAGS="" GENTOO_MIRRORS="http://distfiles.gentoo.org" LDFLAGS="-Wl,-dead_strip_dylibs" MAKEOPTS="-j3" PKGDIR="/Users/dom/Gentoo/usr/portage/packages" PORTAGE_CONFIGROOT="/Users/dom/Gentoo/" 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" PORTAGE_TMPDIR="/Users/dom/Gentoo/var/tmp" USE="aqua coreaudio cracklib cxx ipv6 mmx mmxext modules ncurses objc objc++ prefix prefix-guest readline sse sse2 ssl unicode x64-macos zlib" 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="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2" ELIBC="Darwin" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="keyboard mouse" KERNEL="Darwin" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7" RUBY_TARGETS="ruby20 ruby21" USERLAND="GNU" 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, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Created attachment 419768 [details] build log
it is the same error for llvm-3.5.0
I know why this error comes up! Because clang makefile will try run 'xcrun' to find the xcode commandline tools, and it will succeed. Then it will use that compiler instead the one from the prefix. I hided the 'xcrun' utility, and llvm is merge successfully!
Nice shot. Not sure if we need to patch the build system not to look for xcrun though. Thank you for the report.
yes, we do, so let's keep this ticket open for the time being
I currently create a fake xcrun in `../Gentoo/usr/bin/xcrun` which always returns false to work around.
I committed a fix to the ebuilds based on your suggestion, I hope it is sufficient.
