https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56703
--- Comment #9 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> --- > --- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> --- > Jay, is the original problem on SunOS still happening? > > Rainer, any insight into that build failure? Are some Solaris patches needed? I don't think so: both in Solaris 10 FCS and in current Solaris 11.4, <string.h> declares strsignal alike: extern char *strsignal(int); And for me, both HAVE_STRSIGNAL and HAVE_DECL_STRSIGNAL are defined as 1 in gcc/auto-host.h. Jay needs to look at gcc/config.log in more detail to find why the corresponding autoconf tests fail for him while they work here.