>>> Unpacking source...
>>> Unpacking sandbox-1.2.17.tar.bz2 to /var/tmp/portage/sandbox-1.2.17/work
>>> Source unpacked.
 * If configure fails with a 'cannot run C compiled programs' error, try this:
 * FEATURES=-sandbox emerge sandbox
 * Configuring sandbox for ABI=x86...
 * econf: updating sandbox-1.2.17/config.sub with /usr/share/gnuconfig/config.sub
 * econf: updating sandbox-1.2.17/config.guess with /usr/share/gnuconfig/config.guess
../sandbox-1.2.17//configure --prefix=/usr --host=i686-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --libdir=/usr/lib32 --enable-multilib --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... no
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... configure: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details.

!!! Please attach the config.log to your bug report:
!!! /var/tmp/portage/sandbox-1.2.17/work/build-x86-x86_64-pc-linux-gnu/config.log

!!! ERROR: sys-apps/sandbox-1.2.17 failed.
!!! Function econf, Line 495, Exitcode 0
!!! econf failed
!!! If you need support, post the topmost build error, NOT this status message.