https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94868
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |WONTFIX --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- GCC 4.6.3 is no longer supported, I suggest you try building gmp/mpfr/mpc in-tree by invoking ./contrib/download_prerequesites prior to build rather than using (possibly bogus) libs in /opt. Since you seem to compile a very old code-base also make sure your host compiler is not too new (since you are using --disable-bootstrap it will do -O2 optimization).