https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66038
--- Comment #34 from rguenther at suse dot de <rguenther at suse dot de> --- On Thu, 14 Jan 2016, kumba at gentoo dot org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66038 > > --- Comment #33 from Joshua Kinard <kumba at gentoo dot org> --- > The problem may be tied to a particular CFLAG on glibc-n32 MIPS. I ran our > (Gentoo's) stage-building script, and forgot to block gcc-5.3.0 from building, > and it ended up completing. Difference between that script (which builds > inside a chroot) is I used saner CFLAGS. > > The CFLAGS I am using in my rootfs that fails to build gcc-5.3.0 is: > CFLAGS="-O2 -pipe -march=r12k -mtune=r12k -mno-fix-r10000 -mabi=n32 -mplt > -fomit-frame-pointer -fforce-addr -fivopts -fmodulo-sched -ftree-vectorize" > LDFLAGS="-Wl,-O2 -Wl,-z,now -Wl,-z,relro" > > So I'll look at dropping one flag at a time, along with trimming LDFLAGS, and > see if I can pin down which one causes ./genmatch --gimple to segfault on N32. -fforce-addr is a no-op and -fivopts is enabled at -O2 by default, so you can omit those without testing.
