вс, 19 авг. 2018 г. в 17:54, Tom Lane <tgl@xxxxxxxxxxxxx>: > > Dmitry Igrishin <dmitigr@xxxxxxxxx> writes: > > вс, 19 авг. 2018 г. в 16:20, TalGloz <glozmantal@xxxxxxxxx>: > >> I'll try it later when I'm home. Is there a reason that you are linking like > >> this > >> $(CXX) -Wl,--no-undefined -shared -o seal_diff_cpp.so $(LDFLAGS) $(LDLIBS) > >> seal_diff_cpp.o > >> And not like this? > >> $(CXX) -Wl,--no-undefined -shared -o seal_diff_cpp.so seal_diff_cpp.o > >> $(LDFLAGS) $(LDLIBS) > > > If I recall correctly there were some problems with ordering arguments > > of the linker that are specified upon calling g++. > > You're creating such problems, not solving them, if you put the library > first. Particularly with .a-style libraries, you *must* list the > referencing .o file first, or the linker will deem the library > unreferenced and unnecessary. Ah, I thought just the opposite :-) ! Since I use CMake I forget this subtlety. Thank you for pointing this out!
