http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48815
--- Comment #8 from henry0312 at gmail dot com 2011-04-29 19:06:04 UTC --- Now I know the problem. in config log, ld: library not found for -lgcc_ext.10.5 I put libgcc_ext.10.5.dylib that is made with shared build to build_dir/gcc, and compiled again. Successfully. Why doesn't libgcc_ext.10.5.dylib exist anywhere when static build.