I just enabled PIC, so I don't know if this used to work on this version of glibc, and I couldn't find anything here on bugs.gentoo.org about it. i686-pc-linux-gnu-gcc ../nptl/sysdeps/unix/sysv/linux/i386/fork.c -c -std=gnu99 -O2 -Wall -Winline -Wstrict-prototypes -Wwrite-strings -fPIC -march=pentium4 -mpreferred-stack-boundary=2 -D_IO_MTSAFE_IO -I../include -I. -I/var/tmp/portage/glibc-2.3.6-r4/work/build-default-i686-pc-linux-gnu-nptl/posix -I.. -I../libio -I../nptl -I/var/tmp/portage/glibc-2.3.6-r4/work/build-default-i686-pc-linux-gnu-nptl -I../sysdeps/i386/elf -I../nptl/sysdeps/unix/sysv/linux/i386/i686 -I../nptl/sysdeps/unix/sysv/linux/i386 -I../nptl/sysdeps/unix/sysv/linux -I../nptl/sysdeps/pthread -I../sysdeps/pthread -I../nptl/sysdeps/unix/sysv -I../nptl/sysdeps/unix -I../nptl/sysdeps/i386/i686 -I../nptl/sysdeps/i386 -I../libidn/sysdeps/unix -I../sysdeps/unix/sysv/linux/i386 -I../sysdeps/unix/sysv/linux -I../sysdeps/gnu -I../sysdeps/unix/common -I../sysdeps/unix/mman -I../sysdeps/unix/inet -I../sysdeps/unix/sysv/i386 -I../sysdeps/unix/sysv -I../sysdeps/unix/i386 -I../sysdeps/unix -I../sysdeps/posix -I../sysdeps/i386/i686/fpu -I../sysdeps/i386/i686 -I../sysdeps/i386/i486 -I../nptl/sysdeps/i386/i486 -I../sysdeps/i386/fpu -I../sysdeps/i386 -I../sysdeps/wordsize-32 -I../sysdeps/ieee754/ldbl-96 -I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754/flt-32 -I../sysdeps/ieee754 -I../sysdeps/generic/elf -I../sysdeps/generic -nostdinc -isystem /usr/lib/gcc/i686-pc-linux-gnu/3.4.6/include -isystem /usr/include -D_LIBC_REENTRANT -D_LIBC_REENTRANT -include ../include/libc-symbols.h -o /var/tmp/portage/glibc-2.3.6-r4/work/build-default-i686-pc-linux-gnu-nptl/posix/fork.o -MD -MP -MF /var/tmp/portage/glibc-2.3.6-r4/work/build-default-i686-pc-linux-gnu-nptl/posix/fork.o.dt -MT /var/tmp/portage/glibc-2.3.6-r4/work/build-default-i686-pc-linux-gnu-nptl/posix/fork.o ../nptl/sysdeps/unix/sysv/linux/i386/../fork.c: In function `__libc_fork': ../nptl/sysdeps/unix/sysv/linux/i386/../fork.c:203: error: can't find a register in class `BREG' while reloading `asm' make[2]: *** [/var/tmp/portage/glibc-2.3.6-r4/work/build-default-i686-pc-linux-gnu-nptl/posix/fork.o] Error 1 make[2]: Leaving directory `/var/tmp/portage/glibc-2.3.6-r4/work/glibc-2.3.6/posix' make[1]: *** [posix/subdir_lib] Error 2 make[1]: Leaving directory `/var/tmp/portage/glibc-2.3.6-r4/work/glibc-2.3.6' make: *** [all] Error 2 !!! ERROR: sys-libs/glibc-2.3.6-r4 failed. Call stack: ebuild.sh, line 1539: Called dyn_compile ebuild.sh, line 939: Called src_compile glibc-2.3.6-r4.ebuild, line 1131: Called toolchain-glibc_src_compile glibc-2.3.6-r4.ebuild, line 237: Called die !!! make for default failed !!! If you need support, post the topmost build error, and the call stack if relevant. Portage 2.1 (default-linux/x86/2006.0, gcc-3.4.6, glibc-2.3.6-r3, 2.6.16.16 i686) ================================================================= System uname: 2.6.16.16 i686 Intel(R) Pentium(R) 4 CPU 3.00GHz Gentoo Base System version 1.6.14 dev-lang/python: 2.3.4-r1, 2.4.2 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: [Not Present] dev-util/confcache: 0.4.2-r1 sys-apps/sandbox: 1.2.17 sys-devel/autoconf: 2.13, 2.59-r7 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1 sys-devel/binutils: 2.16.1-r2 sys-devel/gcc-config: 1.3.13-r2 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=pentium4 -msse2 -fomit-frame-pointer -fPIC" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/gconf /etc/revdep-rebuild /etc/terminfo" CXXFLAGS="-O2 -march=pentium4 -msse2 -fomit-frame-pointer -fPIC" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig confcache distlocks metadata-transfer parallell-fetch sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude='/distfiles' --exclude='/local' --exclude='/packages'" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="x86 X aac alsa apache2 apm arts avi bash-completion berkdb bitmap-fonts cli crypt cups dri eds emboss encode esd firefox foomaticdb fortran gd gdbm gif gnome gpm gstreamer gtk gtk2 hal iconv imlib ipv6 isdnlog jack jpeg kde libg++ libwww mad mikmod mmx motif mp3 mpeg ncurses nls nptl ogg opengl oss pam pcre pdflib perl pic png ppds pppd python qt quicktime readline real reflection samba sdl session speex spell spl sse sse2 ssl tcpd theora truetype truetype-fonts type1-fonts udev unicode vorbis win32codecs xinerama xml xmms xorg xv zlib elibc_glibc input_devices_keyboard input_devices_mouse kernel_linux userland_GNU video_cards_radeon" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, LINGUAS, MAKEOPTS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
which is why you should _never_ put -fPIC into your CFLAGS. packages handle PIC on their own.
Portage told you remove it before reporting bugs.
*** This bug has been marked as a duplicate of bug 85961 ***
