https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64635
--- Comment #1 from howarth at bromo dot med.uc.edu --- The problem code is... static void gomp_target_init (void) { const char *prefix ="libgomp-plugin-"; const char *suffix = ".so.1"; in libgomp/target.c which will need to be enhanced use ".1.dylib" on darwin. While there isn't a firm convention for the suffix of shared modules on darwin, the libgomp_plugin_host_nonshm.1.dylib file is a normal shared library... file libgomp-plugin-host_nonshm.1.dylib libgomp-plugin-host_nonshm.1.dylib: Mach-O 64-bit dynamically linked shared library x86_64 and should retain the dylib suffix.