Bugzilla Bug 125898

emerging gecko-sdk fails with the following error message:

i686-pc-linux-gnu-g++ -o nsStackFrameUnix.o -c -DOSTYPE=\"Linux2.6\"
-DOSARCH=\"Linux\" -D_IMPL_NS_COM  -I../../dist/include/string
-I../../dist/include/xpcom -I../../dist/include
-I/var/tmp/portage/gecko-sdk-1.7.12-r1/work/mozilla/dist/include/nspr       
-fPIC  -DGENTOO_NSPLUGINS_DIR=\"/usr/lib/nsplugins\"
-DGENTOO_NSBROWSER_PLUGINS_DIR=\"/usr/lib/nsbrowser/plugins\"  -fno-rtti
-fno-handle-exceptions  -Wconversion -Wpointer-arith -Wcast-align
-Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor
-Wno-long-long -march=pentium-m -Wno-deprecated -Wno-return-type -w
-fshort-wchar -pthread -pipe  -DNDEBUG -DTRIMMED -ffunction-sections -O2 
-DGENTOO_NSPLUGINS_DIR=\"/usr/lib/nsplugins\"
-DGENTOO_NSBROWSER_PLUGINS_DIR=\"/usr/lib/nsbrowser/plugins\"  -DMOZILLA_CLIENT
-include ../../mozilla-config.h -Wp,-MD,.deps/nsStackFrameUnix.pp
nsStackFrameUnix.cpp
nsStackFrameUnix.cpp: In function `void DumpStackToFile(FILE*)':
nsStackFrameUnix.cpp:96: error: `JB_BP' was not declared in this scope
gmake[3]: *** [nsStackFrameUnix.o] Error 1
gmake[3]: *** Waiting for unfinished jobs....
gmake[3]: Leaving directory
`/var/tmp/portage/gecko-sdk-1.7.12-r1/work/mozilla/xpcom/base'
gmake[2]: *** [libs] Error 2
gmake[2]: Leaving directory
`/var/tmp/portage/gecko-sdk-1.7.12-r1/work/mozilla/xpcom'
gmake[1]: *** [tier_2] Error 2
gmake[1]: Leaving directory `/var/tmp/portage/gecko-sdk-1.7.12-r1/work/mozilla'
make: *** [default] Error 2

emerge --info:

Portage 2.1_pre5-r4 (default-linux/x86/2005.0, gcc-3.4.5, glibc-2.4-r0,
2.6.15-gentoo-r7 i686)
=================================================================
System uname: 2.6.15-gentoo-r7 i686 Intel(R) Celeron(R) M processor        
1.30GHz
Gentoo Base System version 1.12.0_pre16
dev-lang/python:     2.4.2-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/libtool:   1.5.22
virtual/os-headers:  2.6.11-r3
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=pentium-m -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3/share/config
/usr/lib/X11/xkb /usr/share/config /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/texmf/web2c /etc/env.d"
CXXFLAGS="-O2 -march=pentium-m -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig distlocks sandbox sfperms strict"
GENTOO_MIRRORS="http://gentoo.gg3.net/ ftp://ftp.ecc.u-tokyo.ac.jp/GENTOO"
LANG="ja_JP.utf8"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.asia.gentoo.org/gentoo-portage"
USE="x86 X acpi alsa apm avi berkdb bitmap-fonts bzip2 cdr cjk crypt cups dri
dvd dvdr emboss encode examples fbcon foomaticdb gdb
m gif gpm gstreamer gtk gtk2 iconv imlib ipv6 jack jpeg libg++ libwww mad
mikmod mime mmap mmx motif mozsvg mp3 mpeg ncurses nls nptl nptlonly nsplugin
ogg oggvorbis opengl pam pdflib perl png quicktime readline sdl spell sse sse2
ssl svg tcpd truetype truetype-fonts truetypr type1-fonts unicode vorbis
wxwindows xml xml2 xv zlib elibc_glibc input_devices_keyboard
input_devices_mouse input_devices_synaptics kernel_linux userland_GNU
video_cards_i810 video_cards_fbdev"
Unset:  ASFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, LC_ALL, LDFLAGS, LINGUAS,
PORTDIR_OVERLAY

*** This bug has been marked as a duplicate of 125832 ***