sci-libs/hdf5 with mpi use enabled fails to compile. Configure says: configure: error: unable to link a simple MPI-IO application Reproducible: Always Steps to Reproduce: 1. USE="mpi" emerge -1 sci-libs/hdf5 sys-cluster/nullmpi is installed $emerge --info sys-libs/hdf5 Portage 2.2.0_alpha30 (default/linux/amd64/10.0/desktop/kde, gcc-4.5.2, libc-0-r0, 2.6.38-gentoo-r4 x86_64) ================================================================= System Settings ================================================================= System uname: Linux-2.6.38-gentoo-r4-x86_64-Intel-R-_Core-TM-_i7_CPU_Q_720_@_1.60GHz-with-gentoo-2.0.2 Timestamp of tree: Wed, 04 May 2011 19:15:01 +0000 app-shells/bash: 4.2_p8-r1 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.6.6-r1, 2.7.1-r1, 3.1.3-r1 dev-util/cmake: 2.8.4-r1 sys-apps/baselayout: 2.0.2 sys-apps/openrc: 0.8.2 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.68 sys-devel/automake: 1.9.6-r3, 1.10.3, 1.11.1-r1 sys-devel/binutils: 2.21 sys-devel/gcc: 4.5.2, 4.6.0 sys-devel/gcc-config: 1.4.1-r1 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82 sys-kernel/linux-headers: 2.6.38 sys-libs/glibc: 2.13-r2 virtual/os-headers: 0 Repositories: gentoo sunrise qting-edge kde emacs science x11 lcd-filtering nirbheek systemd otih dilfridge wirelay my-gentoo xanf Installed sets: @xanf-all ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA @FSF-APPROVED skype-eula dlj-1.1 AdobeFlash-10.1 PUEL google-talkplugin googleearth TeamViewer" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/openvpn/easy-rsa /usr/share/themes/oxygen-gtk/gtk-2.0" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.3/ext-active/ /etc/php/cgi-php5.3/ext-active/ /etc/php/cli-php5.3/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/var/data/distfiles" FEATURES="assume-digests binpkg-logs collision-protect distlocks fixlafiles fixpackages news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv" FFLAGS="" GENTOO_MIRRORS="http://de-mirror.org/distro/gentoo/ http://mirror.netcologne.de/gentoo/" LANG="uk_UA.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en eo de ru uk" MAKEOPTS="-j4" PKGDIR="/var/data/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_EXTRA_OPTS="--quiet" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/data/tmp" PORTDIR="/var/data/portage" PORTDIR_OVERLAY="/var/data/repository/sunrise /var/data/repository/qting-edge /var/data/repository/kde /var/data/repository/emacs /var/data/repository/science /var/data/repository/x11 /var/data/repository/lcd-filtering /var/data/repository/nirbheek /var/data/repository/systemd /var/data/repository/otih /var/data/repository/dilfridge /var/data/repository/wirelay /var/data/repository/my /var/data/repository/xanf" SYNC="rsync://rsync.de.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi alsa amd64 apng bash-completion berkdb bluetooth bluray branding bzip2 cairo cdr cli consolekit cracklib crypt cups cxx dbus dirac djvu dri dts dvd dvdr emboss encode exif faac fam ffmpeg firefox flac fontconfig fontforge fortran fuse gdbm gdu gif gnuplot gnutls gpm gsm gtk iconv imagemagick inotify ipv6 java jpeg jpeg2k kde kerberos kipi lame lapack latex lcms ldap libnotify live lzma mad mmx mng modules mp3 mp4 mpeg mudflap multilib ncurses networkmanager nls nptl nptlonly ogg opengl openmp pam pango pch pcre pdf perl png policykit ppds pppd pulseaudio python qt3support qt4 quicktime radio readline rss rtmp samba sdl semantic-desktop session smartcard smp speex spell sqlite sse sse2 sse3 sse4 ssl ssse3 startup-notification svg symlink sysfs system-sqlite systemd taglib tcpd theora threads thumbnail tiff truetype udev unicode usb v4l v4l2 vaapi vim-syntax vorbis vpx x264 xattr xcb xcomposite xinerama xml xorg xulrunner xv xvid yv12 zeroconf zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci 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 mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias proxy" CAMERAS="ptp2 canon ptp2 fuji" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="keyboard mouse evdev evdev synaptics wacom joystick" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en eo de ru uk" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="v4l radeon fglrx" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS
Created attachment 272131 [details] build log
And what does config.log say ?
O, nullmpi is from science overlay, not from the portage tree...
Created attachment 272139 [details] config.log
In such case it's probably INVALID, unless science herd cares. In-tree version supports sys-cluster/openmpi and sys-cluster/mpich2. checks are for libmpi and libmpich and if 'fortran', libmpio. As you've noticed, last check fails and stops the build.
Nullmpi is not production ready and it doesn't support MPI-IO (doesn't even cover MPI standard AFAIK). It just won't work.
