emerge ifc fails due to dependency on lzma-4.32.7 which fails to create an executable. >>> Unpacking source... >>> Unpacking lzma-4.32.7.tar.gz to /var/tmp/portage/app-arch/lzma-utils-4.32.7/work >>> Source unpacked. >>> Compiling source in /var/tmp/portage/app-arch/lzma-utils-4.32.7/work/lzma-4.32.7 ... * econf: updating lzma-4.32.7/config.guess with /usr/share/gnuconfig/config.guess * econf: updating lzma-4.32.7/config.sub with /usr/share/gnuconfig/config.sub ./configure --prefix=/usr --host=x86_64-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --libdir=/usr/lib64 --build=x86_64-pc-linux-gnu checking if debugging code should be compiled... no checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... gawk checking whether make sets $(MAKE)... yes checking for x86_64-pc-linux-gnu-g++... x86_64-pc-linux-gnu-g++ checking for C++ compiler default output file name... configure: error: C++ compiler cannot create executables See `config.log' for more details. !!! Please attach the following file when seeking support: !!! /var/tmp/portage/app-arch/lzma-utils-4.32.7/work/lzma-4.32.7/config.log * * ERROR: app-arch/lzma-utils-4.32.7 failed. * Call stack: * ebuild.sh, line 49: Called src_compile * environment, line 2211: Called econf * ebuild.sh, line 513: Called die * The specific snippet of code: * die "econf failed" * The die message: * econf failed * Here is a relevant section of the config.log: configure:2704: $? = 0 configure:2711: x86_64-pc-linux-gnu-g++ -v >&5 Using built-in specs. Target: x86_64-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-4.1.2/work/gcc-4.1.2/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.1.2 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.1.2 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.1.2/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.1.2/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --enable-nls --without-included-gettext --with-system-zlib --disable-checking --disable-werror --enable-secureplt --disable-libunwind-exceptions --enable-multilib --enable-libmudflap --disable-libssp --disable-libgcj --enable-languages=c,c++,treelang,fortran --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu Thread model: posix gcc version 4.1.2 (Gentoo 4.1.2 p1.0.2) configure:2715: $? = 0 configure:2722: x86_64-pc-linux-gnu-g++ -V >&5 x86_64-pc-linux-gnu-g++: '-V' option must have argument configure:2726: $? = 1 configure:2749: checking for C++ compiler default output file name configure:2771: x86_64-pc-linux-gnu-g++ -O2 -march=core2 -pipe -Wl,-O1 conftest.cpp >&5 conftest.cpp:1: error: bad value (core2) for -march= switch conftest.cpp:1: error: bad value (core2) for -mtune= switch configure:2775: $? = 1 configure:2813: result: configure: failed program was: | /* confdefs.h. */ | #define PACKAGE_NAME "LZMA" | #define PACKAGE_TARNAME "lzma" | #define PACKAGE_VERSION "4.32.7" | #define PACKAGE_STRING "LZMA 4.32.7" | #define PACKAGE_BUGREPORT "lasse.collin@tukaani.org" | #define NDEBUG 1 | #define PACKAGE "lzma" | #define VERSION "4.32.7" | /* end confdefs.h. */ | | int | main () | { | | ; | return 0; | } configure:2820: error: C++ compiler cannot create executables See `config.log' for more details. Reproducible: Always Steps to Reproduce: 1.emerge ifc 2. 3. Portage 2.1.4.4 (default/linux/amd64/2008.0, gcc-4.1.2, glibc-2.6.1-r0, 2.6.30-gentoo-r4 x86_64) ================================================================= System uname: 2.6.30-gentoo-r4 x86_64 Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz Timestamp of tree: Tue, 11 Aug 2009 22:00:21 +0000 app-shells/bash: 3.2_p17-r1 dev-lang/python: 2.4.4-r13 dev-python/pycrypto: 2.0.1-r6 sys-apps/baselayout: 1.12.11.1 sys-apps/sandbox: 1.2.18.1-r2 sys-devel/autoconf: 2.61-r1 sys-devel/automake: 1.10.1 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-r3 ACCEPT_KEYWORDS="amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -march=core2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/env.d /etc/gconf /etc/terminfo /etc/udev/rules.d" CXXFLAGS="-O2 -march=core2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks metadata-transfer sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp://ftp.gtlib.gatech.edu/pub/gentoo " LDFLAGS="-Wl,-O1" PKGDIR="/usr/portage/packages" 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="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="acl amd64 berkdb bzip2 cli cracklib crypt cups dri fortran gdbm gpm iconv ipv6 isdnlog mmx mudflap multilib ncurses nls nptl nptlonly openmp pam pcre perl pppd python readline reflection session spl sse sse2 ssl sysfs tcpd unicode xorg 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 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" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" USERLAND="GNU" VIDEO_CARDS="fbdev glint i810 intel mach64 mga neomagic nv r128 radeon savage sis tdfx trident vesa vga via vmware voodoo" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, LINGUAS, MAKEOPTS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
> gcc version 4.1.2 (Gentoo 4.1.2 p1.0.2) > conftest.cpp:1: error: bad value (core2) for -march= switch > conftest.cpp:1: error: bad value (core2) for -mtune= switch AFAIK only gcc 4.3 and later know -march=core2. The ones available in gcc 4.1 series are listed, e.g., over here: http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/i386-and-x86_002d64-Options.html
conftest.cpp:1: error: bad value (core2) for -march= switch You are trying to use cflags that your compiler doesn't understand if I read that correctly. Please stop doing that :)