C compiler cannot create executables

Hallo!

Seit einiger Zeit kann ich keine Pakete mehr emergen:

Hier slrn als Beispiel:

--8<---------------cut here---------------start------------->8---
checking for x86_64-pc-linux-gnu-gcc... clang
checking whether the C compiler works... no
configure: error: in `/var/tmp/portage/net-nntp/slrn-1.0.2/work/slrn-1.0.2':
configure: error: C compiler cannot create executables
See `config.log' for more details

!!! Please attach the following file when seeking support:
!!! /var/tmp/portage/net-nntp/slrn-1.0.2/work/slrn-1.0.2/config.log
 * ERROR: net-nntp/slrn-1.0.2::gentoo failed (configure phase):
 *   econf failed
 *=20
 * Call stack:
 *          ebuild.sh, line   93:  Called src_configure
 *        environment, line 2844:  Called autotools-utils_src_configure
 *        environment, line  600:  Called econf '--docdir=3D/usr/share/doc/=
slrn-1.0.2' '--with-docdir=3D/usr/share/doc/slrn-1.0.2' '--with-slrnpull' '=
--without-canlock' '--without-uu' '--enable-nls' '--with-ssl'
 *   phase-helpers.sh, line  584:  Called die
 * The specific snippet of code:
 *                      die "econf failed"
 *=20
 * If you need support, post the output of `emerge --info '=3Dnet-nntp/slrn=
-1.0.2::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=3Dnet-nntp/slrn-=
1.0.2::gentoo'`.
 * The complete build log is located at '/var/tmp/portage/net-nntp/slrn-1.0=
.2/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-nntp/slr=
n-1.0.2/temp/environment'.
 * Working directory: '/var/tmp/portage/net-nntp/slrn-1.0.2/work/slrn-1.0.2'
 * S: '/var/tmp/portage/net-nntp/slrn-1.0.2/work/slrn-1.0.2'
--8<---------------cut here---------------end--------------->8---


Und hier der relevante Auszug aus meiner make.conf:

--8<---------------cut here---------------start------------->8---
CC=3Dclang
CXX=3Dclang++
CFLAGS=3D"-O2 -march=3Dcore2 -pipe -fcolor-diagnostics"
CHOST=3D"x86_64-pc-linux-gnu"
CXXFLAGS=3D"${CFLAGS}"
LDFLAGS=3D"-Wl -O1 --as-needed"
ACCEPT_KEYWORDS=3D"~amd64"
MAKEOPTS=3D"-j8"
FEATURES=3D"parallel-fetch protect-owned splitdebug userfetch userpriv ccache"
--8<---------------cut here---------------end--------------->8---

Das Problem tritt _nur_ beim emergen von verschiedenen Paketen auf. Ein
manuelles make funktioniert ohne Probleme.



-- 
Beste Grüße, Clemens Schüller