I try to compile pixman with the flag iwmmxt. Added to the package.use line "x11-libs/pixman iwmmxt" and run: # emerge pixman Pixman compilation stops with the message: checking whether to use ARM IWMMXT intrinsics... no configure: error: IWMMXT intrinsics not detected But: hx4700 ~ # cat /proc/cpuinfo Processor : XScale-PXA270 rev 7 (v5l) BogoMIPS : 623.41 Features : swp half thumb fastmult edsp iwmmxt CPU implementer : 0x69 CPU architecture: 5TE CPU variant : 0x0 CPU part : 0x411 CPU revision : 7 Hardware : HP iPAQ HX4700 Revision : 0000 Serial : 0000000000000000 Reproducible: Always hx4700 ~ # emerge --info Portage 2.1.11.31 (default/linux/arm/10.0, gcc-4.5.4, glibc-2.15-r3, 3.5.7-gentoo armv5tel) ================================================================= System uname: Linux-3.5.7-gentoo-armv5tel-XScale-PXA270_rev_7_-v5l-with-gentoo-2.1 Timestamp of tree: Sun, 30 Dec 2012 00:45:01 +0000 ld GNU ld (GNU Binutils) 2.22 app-shells/bash: 4.2_p37 dev-lang/python: 2.7.3-r2, 3.2.3 dev-util/cmake: 2.8.9 dev-util/pkgconfig: 0.27.1 sys-apps/baselayout: 2.1-r1 sys-apps/openrc: 0.11.8 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.11.6 sys-devel/binutils: 2.22-r1 sys-devel/gcc: 4.5.4 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.6 (virtual/os-headers) sys-libs/glibc: 2.15-r3 Repositories: gentoo ACCEPT_KEYWORDS="arm" ACCEPT_LICENSE="* -@EULA" CBUILD="armv5te-iwmmxt-linux-gnueabi" CFLAGS="-O2 -march=iwmmxt -mtune=iwmmxt -pipe" CHOST="armv5te-iwmmxt-linux-gnueabi" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="${EPREFIX}/etc/gconf /etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -march=iwmmxt -mtune=iwmmxt -pipe" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="-O2" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="ru_RU.UTF-8" LC_ALL="" LDFLAGS="-Wl,-O1 -Wl,--as-needed" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X acl arm berkdb bzip2 cli cracklib crypt cxx gdbm gpm iconv iwmmxt modules ncurses nls nptl pam pcre pppd readline session ssl tcpd unicode zlib" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" 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" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" 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 ubx" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en ru" PHP_TARGETS="php5-3" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" RUBY_TARGETS="ruby18 ruby19" USERLAND="GNU" VIDEO_CARDS="fbdev w100 pxafb" 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, MAKEOPTS, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Created attachment 336316 [details] /var/tmp/portage/x11-libs/pixman-0.28.0/work/pixman-0.28.0_build/config.log This log added from /var/tmp/portage/x11-libs/pixman-0.28.0/work/pixman-0.28.0_build/config.log, because that is specified after the message when compiling.
/usr/lib/gcc/armv5te-iwmmxt-linux-gnueabi/4.5.4/include/mmintrin.h:552:39: internal compiler error: in arm_expand_binop_builtin, at config/arm/arm.c:17922
Hi Alex. The problem is that gcc's support for iwMMXt intrinsics was broken for a very long time before gcc-4.7. Trying to use them causes an internal compiler error. I'm not sure how to handle this in the ebuild, since gcc-4.7 is masked. If you'd like, I can help you work around this (you'll have to install gcc-4.7). Also, by default pixman builds iwMMXt code with -march=iwmmxt2 (since that's the processor I was targeting when I wrote it). You can set EXTRA_ECONF (like is done at the bottom of http://wiki.gentoo.org/wiki/Gold) for pixman to EXTRA_ECONF="--disable-arm-iwmmxt2" and it will only build with iwmmxt(1).
Hi, Matt. I did: hx4700 ~ # echo "sys-devel/gcc" >> /etc/portage/package.unmask hx4700 ~ # echo "sys-devel/gcc ~arm" >> /etc/portage/package.keywords hx4700 ~ # emerge linux-headers glibc binutils gcc-config gcc hx4700 ~ # gcc-config -l [1] armv5te-iwmmxt-linux-gnueabi-4.5.4 * [2] armv5te-iwmmxt-linux-gnueabi-4.7.2 hx4700 ~ # gcc-config 2 hx4700 ~ # gcc-config -l [1] armv5te-iwmmxt-linux-gnueabi-4.5.4 [2] armv5te-iwmmxt-linux-gnueabi-4.7.2 * hx4700 ~ # echo "x11-libs/pixman pixman.conf" >> /etc/portage/package.env hx4700 ~ # mkdir /etc/portage/env hx4700 ~ # echo 'EXTRA_ECONF="--disable-arm-iwmmxt2"' >> /etc/portage/env/pixman.conf hx4700 ~ # env-update && source /etc/profile hx4700 ~ # emerge pixman But the error is repeated, though the configuration is performed: /var/tmp/portage/x11-libs/pixman-0.28.0/work/pixman-0.28.0/configure --prefix=/usr --build=armv5te-iwmmxt-linux-gnueabi --host=armv5te-iwmmxt-linux-gnueabi --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --disable-dependency-tracking --docdir=/usr/share/doc/pixman-0.28.0 --enable-shared --disable-static --disable-mmx --disable-sse2 --disable-vmx --disable-arm-neon --enable-arm-iwmmxt --disable-gtk --disable-arm-iwmmxt2
Created attachment 341316 [details, diff] iwmmxt-for-4.7.patch Hi Alex, Sorry -- I was somewhat mistaken. The iwMMXt support patch is in gcc-4.8 and a smaller fix was backported to (unreleased) gcc-4.7.3. Attached is a patch that should apply to 4.7.2. It is what was committed to 4.8.
gcc-4.8 is now released (with working iwMMXt support). Marking it as a blocker of this bug.
I think gcc-4.7.3 (not hard masked) also will compile this code, but I have not tested it myself.
Created attachment 370308 [details] gcc-4.8.2. pixman-0.32.4. build.log
gcc-4.8.2 compiling pixman with an error in attachment "gcc-4.8.2. pixman-0.32.4. build.log".
(In reply to Alex from comment #9) Your error appears not related to this bug report.
(In reply to Chí-Thanh Christopher Nguyễn from comment #10) Then the bug can be resolved to note, since gcc-4.8.2 initial error does not appear. Thanks!
I think that's because it didn't get to build pixman-mmx.c. :( I had to hack the automake build system to make it work before, so it probably needs a fix-up.
I just built with iwmmxt enabled using an ARM cross compiler. No problems encountered, so I can't reproduce. CFLAGS="-O2 -march=armv7-a -mtune=marvell-pj4 -pipe" ./configure --disable-arm-neon --enable-arm-iwmmxt2 --host=armv5tel-unknown-linux-gnueabi --build=x86_64-pc-linux-gnu
Appropriate versions of gcc are stable on ARM and I couldn't reproduce. Marking as WORKSFORME.
