I've reproduced this native and cross. /home/jay/src/gcc-4.5.1/configure -disable-nls -disable-bootstrap -prefix=/home/jay/gcc451
: In function `mips16_build_function_stub': : undefined reference to `ASM_OUTPUT_DEF' collect2: ld returned 1 exit status gmake[2]: *** [cc1-dummy] Error 1 gmake[2]: Leaving directory `/home/jay/obj/gcc451/gcc' gmake[1]: *** [all-gcc] Error 2 gmake[1]: Leaving directory `/home/jay/obj/gcc451' gmake: *** [all] Error 2 $ pwd /home/jay/obj/gcc451 $ uname -a OpenBSD mobsd.my.domain 4.7 GENERIC#2 loongson -- Summary: In function `mips16_build_function_stub' undefined reference to `ASM_OUTPUT_DEF' Product: gcc Version: 4.5.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: jay dot krell at cornell dot edu GCC target triplet: mips64el-unknown-openbsd4.7 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45345