My Darwin build of 4.0 failed in libstdc++: ibsupc++convenience.a -lm -lm -lc -Wl,-single_module -Wl,-flat_namespace -install_name /Users/aph/gcc/install/lib/libstdc++.6.dylib -compatibility_version 7 -current_version 7.4 ld: .libs/mt_allocator.o malformed object, illegal reference for -dynamic code (reference to a coalesced section (__TEXT,__textcoal_nt) from section (__TEXT,__eh_frame) relocation entry (4)) ld: .libs/mt_allocator.o malformed object, illegal reference for -dynamic code (reference to a coalesced section (__TEXT,__textcoal_nt) from section (__TEXT,__eh_frame) relocation entry (8)) ld: .libs/mt_allocator.o malformed object, illegal reference for -dynamic code (reference to a coalesced section (__TEXT,__textcoal_nt) from section (__TEXT,__eh_frame) relocation entry (12))
This is with a fresh download of Xcode. Andrew.