Mine

then mv -f ".deps/pkt_buffer.Tpo" ".deps/pkt_buffer.Plo"; \
else rm -f ".deps/pkt_buffer.Tpo"; exit 1; \
fi
The bug is not reproducible, so it is likely a hardware or OS problem.
make[2]: *** [alist.lo] Error 1
make[2]: *** Waiting for unfinished jobs....
 gcc -DHAVE_CONFIG_H -I. -I/var/tmp/portage/libol-0.3.18/work/libol-0.3.18/src -I. -D_GNU_SOURCE -D_XOPEN_SOURCE_EXTENDED -march=prescott -O2 -pipe -fomit-frame-pointer -MT pkt_buffer.lo -MD -MP -MF .deps/pkt_buffer.Tpo -c pkt_buffer.c  -fPIC -DPIC -o .libs/pkt_buffer.o
 gcc -DHAVE_CONFIG_H -I. -I/var/tmp/portage/libol-0.3.18/work/libol-0.3.18/src -I. -D_GNU_SOURCE -D_XOPEN_SOURCE_EXTENDED -march=prescott -O2 -pipe -fomit-frame-pointer -MT pkt_buffer.lo -MD -MP -MF .deps/pkt_buffer.Tpo -c pkt_buffer.c -o pkt_buffer.o >/dev/null 2>&1
make[2]: Leaving directory `/var/tmp/portage/libol-0.3.18/work/libol-0.3.18/src'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/var/tmp/portage/libol-0.3.18/work/libol-0.3.18/src'
make: *** [all-recursive] Error 1

!!! ERROR: dev-libs/libol-0.3.18 failed.
Call stack:
  ebuild.sh, line 1539:   Called dyn_compile
  ebuild.sh, line 939:   Called src_compile
  libol-0.3.18.ebuild, line 27:   Called die

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