http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289
--- Comment #18 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-11-13 23:21:35 UTC --- > prototype patch for adding darwin asan support Already updated;-( - x86_64-*-linux-* | i?86-*-linux-*) + x86_64-*-linux-* | i?86-*-linux-* | *-*-darwin*) should now go to libsanitizer/configure.tgt and not to configure.ac.