I get a huge bunch of "undefined reference" errors while trying to emerge netcdf 3.6.1: ... test_get.o: In function `test_nf_get_att_text__': cckZITtg.f:(.text+0x145a6): undefined reference to `nf_open__' cckZITtg.f:(.text+0x146b6): undefined reference to `nf_get_att_text__' cckZITtg.f:(.text+0x14747): undefined reference to `nf_get_att_text__' cckZITtg.f:(.text+0x147ae): undefined reference to `nf_get_att_text__' cckZITtg.f:(.text+0x149ad): undefined reference to `nf_get_att_text__' cckZITtg.f:(.text+0x14d20): undefined reference to `nf_close__' ... util.o: In function `internal_max__': cc8uZ8CW.f:(.text+0x31aa): undefined reference to `max_schar__' cc8uZ8CW.f:(.text+0x31bc): undefined reference to `max_short__' cc8uZ8CW.f:(.text+0x31ce): undefined reference to `max_int__' cc8uZ8CW.f:(.text+0x31e0): undefined reference to `max_float__' cc8uZ8CW.f:(.text+0x31f2): undefined reference to `max_double__' collect2: ld returned 1 exit status make[2]: *** [nf_test] Error 1 make[2]: Leaving directory `/var/tmp/portage/netcdf-3.6.1/work/netcdf-3.6.1/src/nf_test' make[1]: *** [subdir_target] Error 1 make[1]: Leaving directory `/var/tmp/portage/netcdf-3.6.1/work/netcdf-3.6.1/src' make: *** [nf_test/test] Error 2 !!! ERROR: sci-libs/netcdf-3.6.1 failed. Call stack: ebuild.sh, line 1539: Called dyn_compile ebuild.sh, line 939: Called src_compile netcdf-3.6.1.ebuild, line 45: Called die ============================================ emerge --info Portage 2.1_rc4-r3 (default-linux/x86/2006.0, gcc-3.4.6/vanilla, glibc-2.4-r3, 2.6.13-rc5-mm1 i686) ================================================================= System uname: 2.6.13-rc5-mm1 i686 VIA Nehemiah Gentoo Base System version 1.12.1 dev-lang/python: 2.3.4-r1, 2.4.3-r1 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: [Not Present] dev-util/confcache: [Not Present] sys-apps/sandbox: 1.2.18.1 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-r2 sys-devel/binutils: 2.16.1-r2 sys-devel/gcc-config: 2.0.0_rc1 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r5 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-O3 -march=i686 -msse -mmmx -mfpmath=sse -fomit-frame-pointer -funroll-loops -pipe" 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/share/X11/xkb /usr/share/config" CONFIG_PROTECT_MASK="/etc/eselect/compiler /etc/gconf /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c /etc/env.d" CXXFLAGS="-O3 -march=i686 -msse -mmmx -mfpmath=sse -fomit-frame-pointer -funroll-loops -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks metadata-transfer sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" LANG="de_DE@euro" LINGUAS="de" 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" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="x86 X alsa apache2 apm arts avi berkdb bitmap-fonts cli crypt cups dri dvb eds emboss encode esd foomaticdb fortran gdbm gif gnome gpm gstreamer gtk gtk2 imlib insecure-drivers ipv6 isdnlog jack jpeg kde lcms libg++ libwww mad mikmod mmx motif mp3 mpeg ncurses nls nptl nptlonly ogg opengl oss pam pcre pdflib perl plugin png pppd python qt quicktime readline reflection sdl session soundtouch spell spl sse ssl tcpd theora truetype truetype-fonts type1-fonts udev usb vorbis xine xml xmms xorg xv zlib elibc_glibc input_devices_keyboard input_devices_mouse kernel_linux linguas_de userland_GNU video_cards_via video_cards_vesa" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LDFLAGS, MAKEOPTS, PORTAGE_RSYNC_EXTRA_OPTS
*** Bug 136184 has been marked as a duplicate of this bug. ***
I've moved the tests to src_test() even though they work fine with either g77 or gfortran, so just use FEATURES="-test" to disable them. Since you have fortran in your USE flags, I'm not sure why the tests would barf, unless you built gcc before you added fortran...