emerge --oneshot -av libtool

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   ] sys-devel/libtool-1.5.22  0 kB

Total size of downloads: 0 kB

Would you like to merge these packages? [Yes/No] yes

>>> Emerging (1 of 1) sys-devel/libtool-1.5.22 to /
 * libtool-1.5.22.tar.gz MD5 ;-) ...                                      [ ok ]
 * libtool-1.5.22.tar.gz size ;-) ...                                     [ ok ]
 * checking ebuild checksums ;-) ...                                      [ ok ]
 * checking auxfile checksums ;-) ...                                     [ ok ]
 * checking miscfile checksums ;-) ...                                    [ ok ]
 * checking libtool-1.5.22.tar.gz ;-) ...                                 [ ok ]
>>> Unpacking source...
>>> Unpacking libtool-1.5.22.tar.gz to /var/tmp/portage/libtool-1.5.22/work
 * Applying libtool-1.4.2-archive-shared.patch ...                        [ ok ]
 * Applying libtool-1.5.6-ltmain-SED.patch ...                            [ ok ]
 * Applying libtool-1.4.2-expsym-linux.patch ...                          [ ok ]
 * Applying libtool-1.5.20-use-linux-version-in-fbsd.patch ...            [ ok ]
 * Applying libtool-1.5.10-portage.patch ...                              [ ok ]
 * Applying libtool-1.5.20-version-checking.patch ...                     [ ok ]
 * Applying libtool-1.5.20-ltmain_sh-max_cmd_len.patch ...                [ ok ]
 * Applying libtool-1.5-filter-host-tags.patch ...                        [ ok ]
 * Applying libtool-1.5.10-locking.patch ...                              [ ok ]
 * Applying libtool-1.5.14-egrep.patch ...                                [ ok ]
 * Applying libtool-1.5.20-override-LD_LIBRARY_PATH.patch ...             [ ok ]
 * Generating ltmain.sh ...                                               [ ok ]
 * Running autotools in '.' ...                                           [ ok ]
 * Running autotools in 'libltdl' ...                                     [ ok ]
 * Removing useless C++ checks ...                                        [ ok ]
>>> Source unpacked.
>>> Compiling source in /var/tmp/portage/libtool-1.5.22/work/libtool-1.5.22 ...
 * econf: updating libtool-1.5.22/config.guess with /usr/share/gnuconfig/config.guess
 * econf: updating libtool-1.5.22/config.sub with /usr/share/gnuconfig/config.sub
 * econf: updating libtool-1.5.22/libltdl/config.guess with /usr/share/gnuconfig/config.guess
 * econf: updating libtool-1.5.22/libltdl/config.sub with /usr/share/gnuconfig/config.sub
./configure --prefix=/usr --host=i686-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --build=i686-pc-linux-gnu
checking for a BSD-compatible install... /bin/install -c
checking whether build environment is sane... yes
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for i686-pc-linux-gnu-gcc... i686-pc-linux-gnu-gcc
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 filing a report to bugs.gentoo.org:
!!! /var/tmp/portage/libtool-1.5.22/work/libtool-1.5.22/config.log

!!! ERROR: sys-devel/libtool-1.5.22 failed.
Call stack:
  ebuild.sh, line 1546:   Called dyn_compile
  ebuild.sh, line 937:   Called src_compile
  libtool-1.5.22.ebuild, line 128:   Called econf
  ebuild.sh, line 540:   Called die

!!! econf failed
!!! If you need support, post the topmost build error, and the call stack if relevant.