http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53113
David Kredba <nheghathivhistha at gmail dot com> changed:
What |Removed |Added
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CC| |nheghathivhistha at gmail dot
com
--- Comment #11 from David Kredba <nheghathivhistha at gmail dot com> ---
I have the same problem with snapshot 4.9-20131222.
Makefile:517: recipe for target 'x86_avx.lo' failed:
libtool: compile:
/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/build/./gcc/xg++
-B/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/build/./gcc/
-nostdinc++ -nostdinc++
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/build/x86_64-pc-linux-gnu/libstdc++-v3/include
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/libstdc++-v3/libsupc++
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/libstdc++-v3/include/backward
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/libstdc++-v3/testsuite/util
-L/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/build/x86_64-pc-linux-gnu/libstdc++-v3/src
-L/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/build/x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-L/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/build/x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-B/usr/x86_64-pc-linux-gnu/bin/ -B/usr/x86_64-pc-linux-gnu/lib/ -isystem
/usr/x86_64-pc-linux-gnu/include -isystem /usr/x86_64-pc-linux-gnu/sys-include
-DHAVE_CONFIG_H -I.
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/libitm
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/libitm/config/linux/x86
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/libitm/config/linux
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/libitm/config/x86
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/libitm/config/posix
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/libitm/config/generic
-I/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/libitm
-mrtm -Wall -pthread -Werror -mavx -std=gnu++0x -funwind-tables -fno-exceptions
-fno-rtti -fabi-version=4 -O2 -ggdb -pipe -march=native -mtune=native
-mno-sse4.2 -mno-sse4a -mno-avx -mno-3dnow -D_GNU_SOURCE -MT x86_avx.lo -MD -MP
-MF .deps/x86_avx.Tpo -c
/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/libitm/config/x86/x86_avx.cc
-fPIC -DPIC -o .libs/x86_avx.o
I found qt-4.8.5 reporting existence of AVX and SSE 4.2 where I have Core2
only.
So now I am rebuilding my Gentoo system with -O2 -ggdb -pipe -march=native
-mtune=native -mno-sse4.2 -mno-sse4a -mno-avx -mno-3dnow but GCC bootstrap
ignores it and adds -mavx.
Configuration of gcc source tree:
/var/tmp/portage/sys-devel/gcc-4.9.0_alpha20131222/work/gcc-4.9-20131222/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.9.0-alpha20131222
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.0-alpha20131222/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.0-alpha20131222
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.0-alpha20131222/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.0-alpha20131222/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.0-alpha20131222/include/g++-v4
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.9.0-alpha20131222/python
--enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--enable-checking=release --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion=Gentoo 4.9.0_alpha20131222 --enable-libstdcxx-time
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64
--disable-altivec --disable-fixed-point --enable-targets=all --disable-libgcj
--enable-libgomp --disable-libmudflap --disable-libssp --enable-lto
--without-cloog
