media-libs/opencv-2.3.1a fails to build with following message: make[2]: *** No rule to make target `/var/tmp/portage/media-libs/opencv-2.3.1a/work/OpenCV-2.3.1/modules/flann/include/opencv2/flann/nn_index.h', needed by `modules/flann/CMakeFiles/opencv_flann.dir/src/flann.o'. Stop. Could be a parallel-make issue. Reproducible: Always Portage 2.2.0_alpha79 (default/linux/amd64/10.0/desktop/kde, gcc-4.6.2, glibc-2.14.1-r0, 3.1.1-gentoo x86_64) ================================================================= System uname: Linux-3.1.1-gentoo-x86_64-AMD_Athlon-tm-_64_X2_Dual_Core_Processor_5000+-with-gentoo-2.1 Timestamp of tree: Mon, 28 Nov 2011 16:15:01 +0000 distcc 3.2rc1 x86_64-pc-linux-gnu [disabled] app-shells/bash: 4.2_p20 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.7.2-r3, 3.2.2 dev-util/cmake: 2.8.6-r4 dev-util/pkgconfig: 0.26 sys-apps/baselayout: 2.1 sys-apps/openrc: 0.9.4 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: 2.22 sys-devel/gcc: 4.6.2 sys-devel/gcc-config: 1.5-r2 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r3 sys-kernel/linux-headers: 2.6.39 (virtual/os-headers) sys-libs/glibc: 2.14.1 Repositories: gentoo kde sunrise local Installed sets: @kdebase ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-pipe -O2 -march=athlon64-sse3 -ftree-vectorize" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/themes/oxygen-gtk/gtk-2.0 /var/lib/neatx/home" 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-php5.4/ext-active/ /etc/php/cgi-php5.4/ext-active/ /etc/php/cli-php5.4/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="-pipe -O2 -march=athlon64-sse3 -ftree-vectorize" DISTDIR="/var/cache/portage/distfiles" EMERGE_DEFAULT_OPTS="--depclean-lib-check n --with-bdeps y --keep-going" FEATURES="assume-digests binpkg-logs distlocks ebuild-locks fixlafiles news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="" GENTOO_MIRRORS="ftp://linux.rz.ruhr-uni-bochum.de/gentoo-mirror/ ftp://linux.rz.ruhr-uni-bochum.de/gentoo-mirror/ http://distfiles.gentoo.org" LANG="en_GB.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu -Wl,--hash-style=gnu" LINGUAS="de" MAKEOPTS="-j3" PKGDIR="/var/cache/portage/packages" PORTAGE_COMPRESS="xz" PORTAGE_CONFIGROOT="/" 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/tmp" PORTDIR="/var/cache/portage/gentoo" PORTDIR_OVERLAY="/var/cache/portage/layman/kde /var/cache/portage/layman/sunrise /var/cache/portage/local" [...] Unset: CPPFLAGS, CTARGET, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Did you try with MAKEOPTS="-j1"? Which version of cmake do you have installed?
I have latest cmake (cmake-2.8.6-r4) and trying again let the compilation finish.
Please attach the entire failed build log to this bug report.
The problem was gone during the 2nd attempt to build the package, hence I have no build.log. Feel free to close if you cannot reproduce...
gentoo64 eigen # emerge =media-libs/opencv-2.3.1a >>> Emerging (1 of 1) media-libs/opencv-2.3.1a >>> Installing (1 of 1) media-libs/opencv-2.3.1a looks as if it can be closed
