Emerging dev-cpp/libglademm-2.6.0 ends with the following error: i686-pc-linux-gnu-g++ -O2 -march=athlon-xp -pipe -fomit-frame-pointer -o generate_extra_defs generate_defs_libglade.o /usr/lib/libgtkmm-2.4.so -L/usr/i686-pc-linux-gnu/bin -L/usr/i686-pc-linux-gnu/lib -L/usr/lib/gcc/../../i686-pc-linux-gnu/lib /usr/lib/libgdkmm-2.4.so /usr/lib/libatkmm-1.6.so /usr/lib/libpangomm-1.4.so /usr/lib/libglibmm-2.4.so /usr/lib/libglade-2.0.so /usr/lib/libgtk-x11-2.0.so /usr/lib/libxml2.so -lpthread -lz /usr/lib/libgdk-x11-2.0.so /usr/lib/libatk-1.0.so /usr/lib/libgdk_pixbuf-2.0.so /usr/lib/libpangoxft-1.0.so /usr/lib/libpangox-1.0.so /usr/lib/libpango-1.0.so -lm /usr/lib/libglibmm_generate_extra_defs-2.4.so /usr/lib/libsigc-2.0.so /usr/lib/libgobject-2.0.so /usr/lib/libgmodule-2.0.so /usr/lib/libglib-2.0.so -ldl /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/../../../../i686-pc-linux-gnu/bin/ld: warning: libstdc++.so.5, needed by /usr/lib/libgtkmm-2.4.so, may conflict with libstdc++.so.6 /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/../../../../i686-pc-linux-gnu/bin/ld: warning: libstdc++.so.5, needed by /usr/lib/libgtkmm-2.4.so, may conflict with libstdc++.so.6 /usr/lib/libglibmm-2.4.so: undefined reference to `sigc::internal::signal_impl::erase(std::_List_iterator<sigc::slot_base, sigc::slot_base&, sigc::slot_base*>)'/usr/lib/libglibmm-2.4.so: undefined reference to `sigc::internal::signal_impl::insert(std::_List_iterator<sigc::slot_base, sigc::slot_base&, sigc::slot_base*>, sigc::slot_base const&)' collect2: ld returned 1 exit status make[2]: *** [generate_extra_defs] Error 1 make[2]: Leaving directory `/var/tmp/portage/libglademm-2.6.0/work/libglademm-2.6.0/tools/extra_defs_gen' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/var/tmp/portage/libglademm-2.6.0/work/libglademm-2.6.0/tools' make: *** [all-recursive] Error 1 !!! ERROR: dev-cpp/libglademm-2.6.0 failed. !!! Function gnome2_src_compile, Line 37, Exitcode 2 !!! compile failure !!! If you need support, post the topmost build error, NOT this status message. I tried three times, twice when running world-update and once manually, no luck. Reproducible: Always Steps to Reproduce: 1. 2. 3. Gentoo Base System version Portage 2.0.51.22-r2 (default-linux/x86/2005.0, gcc-3.4.4, glibc-2.3.5-r0, 2.6.12-gentoo-r4 i686) ================================================================= System uname: 2.6.12-gentoo-r4 i686 AMD Athlon(tm) XP 3000+ distcc 2.18.3 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] dev-lang/python: 2.3.4-r1, 2.4.1-r1 sys-apps/sandbox: 1.2.11 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 sys-devel/binutils: 2.16.1 sys-devel/libtool: 1.5.18-r1 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=athlon-xp -pipe -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /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=athlon-xp -pipe -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks sandbox sfperms strict" GENTOO_MIRRORS="http://trumpetti.atm.tut.fi/gentoo/" LANG="fi_FI.ISO-8859-1" LINGUAS="en fi" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="x86 3dnow X a52 aac acpi alsa apm arts avi berkdb bitmap-fonts bmp cdr crypt cups curl dga divx4linux dv dvd dvdread emboss encode esd fam ffmpeg firefox flac foomaticdb fortran gdbm gif gimpprint gnome gnustep gpm gstreamer gtk gtk2 guile ieee1394 imagemagick imap imlib java jpeg kde lcms libg++ libwww mad matroska mikmod mjpeg mmap mmx motif mp3 mpeg mysql ncurses nls nodrm nptl nptlonly nvidia ogg oggvorbis opengl oss pam pdflib perl png python qt quicktime readline real samba scanner sdl slang sndfile ssl svg tcpd tetex theora tidy tiff truetype truetype-fonts type1-fonts unicode usb v4l v4l2 vorbis win32codecs xine xinerama xml xml2 xv xvmc zlib linguas_en linguas_fi userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, LC_ALL, LDFLAGS
Looks like you built libsigc++ with one version of g++ and are trying to build libglademm with another. you need to rebuild all the deps. I've had this happen quite often when switching between various versions of gcc for testing purposes. If this doesn't turn out to be the case then reopen this bug.