When compiling one of my projects with dwarf + dSYM I'm getting:
warning: Could not resolve external type _ZTSNSt3__113basic_ostreamIcNS_11char_traitsIcEEE6sentryE
warning: Could not resolve external type _ZTSNSt3__16vectorIN2cv6Point_IiEENS_9allocatorIS3_EEE24__RAII_IncreaseAnnotatorE
When compiling some .mm files (Objective-C++ source).
Any ideas?