checking sys/times.h presence... yes
checking for sys/times.h... yes
checking for int... (cached) yes
checking size of int... (cached) 4
checking for short... yes
checking size of short... configure: error: cannot compute sizeof (short), 77
See `config.log' for more details.

!!! ERROR: dev-lang/php-5.1.6-r4 failed.
Call stack:
  ebuild.sh, line 1546:   Called dyn_compile
  ebuild.sh, line 937:   Called src_compile
  php-5.1.6-r4.ebuild, line 173:   Called src_compile_normal
  php-5.1.6-r4.ebuild, line 323:   Called php5_1-sapi_src_compile
  php5_1-sapi.eclass, line 575:   Called die