lam-mpi-7.1.2 builds fine with --as-needed, but when I try to build an MPI executable it gives me lots of "undefined reference to <some-symbol>" errors when linking against /usr/lib/libmpi.so It works fine if I remove --as-needed from LDFLAGS. Reproducible: Always
Post the actual errors here, please. Also emerge --info is missing.
Created attachment 136560 [details] build log example
# emerge --info Portage 2.1.3.19 (default-linux/x86/2006.1/desktop, gcc-4.2.2, glibc-2.6.1-r0, 2.6.23-gentoo i686) ================================================================= System uname: 2.6.23-gentoo i686 Intel(R) Pentium(R) M processor 1500MHz Timestamp of tree: Tue, 20 Nov 2007 20:30:01 +0000 app-shells/bash: 3.2_p17-r1 dev-java/java-config: 1.3.7, 2.1.2-r1 dev-lang/python: 2.5.1-r3 sys-apps/baselayout: 1.12.10-r5 sys-apps/sandbox: 1.2.18.1-r2 sys-devel/autoconf: 2.13, 2.61-r1 sys-devel/automake: 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10 sys-devel/binutils: 2.18-r1 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 1.5.24 virtual/os-headers: 2.6.23-r1 ACCEPT_KEYWORDS="x86 ~x86" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=pentium-m -pipe -fomit-frame-pointer -momit-leaf-frame-pointer -fno-ident" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-O2 -march=pentium-m -pipe -fomit-frame-pointer -momit-leaf-frame-pointer -fno-ident -fvisibility-inlines-hidden" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks metadata-transfer sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="http://darkstar.ist.utl.pt/pub/gentoo" LANG="en_US.UTF-8" LC_ALL="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--sort-common -Wl,--as-needed" LINGUAS="en pt pt_PT" MAKEOPTS="-j2" 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 --filter=H_**/files/digest-*" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X a52 aac acpi alsa avahi bash-completion berkdb bitmap-fonts bzip2 cairo cdr cli cracklib crypt dbus dri dvd dvdr emboss fam firefox gif gnome gstreamer gtk gtk2 hal iconv isdnlog jpeg kerberos mad midi mmx mp3 mpeg mudflap ncurses nls nptl nptlonly ogg opengl openmp pcre pdf perl png ppds pppd python quicktime readline reflection samba sdl session spell spl sse sse2 ssl svg threads truetype truetype-fonts type1-fonts unicode vorbis win32codecs x86 xml xorg xv xvid zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route share shm softvol" ELIBC="glibc" INPUT_DEVICES="keyboard mouse synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en pt pt_PT" USERLAND="GNU" VIDEO_CARDS="nvidia vesa" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
Renato, I just committed a fix for this in lam-mpi-7.1.4, should be on the mirrors soon. Hopefully you're still interested, sorry fixing this took so long. Thanks for the report.
