Re: [sr-dev] Race condition in Makefile.libs

Hello, There seems to be a race condition in Makefile.libs that occurs sporadically when doing parallel builds (make -j). I believe the culprit part is this: $(NAME): $(LIB_RUNTIME_NAME) $(LIB_LINK_NAME) $(LIBINAME_F) $(LIB_RUNTIME_NAME): -@ln -s $(LIB_NAME) $(LIB_RUNTIME_NAME) $(LIB_LINK_NAME): ifeq ($(OS), freebsd) -@ln -s $(LIB_RUNTIME_NAME) $(LIB_LINK_NAME) else -@ln -s $(LIB_NAME) $(LIB_LINK_NAME) endif The problem is that dependencies (the ln -s commands) get built first, and the actual target ($(NAME)) last. The result is that for a while, the symlinks already exist while the lib itself is not fully built yet. In the meantime, other make children build something else that depends on the lib, see that the symlink already exists and hence think the target has already been built, which then results in various funny errors when the linker tries to read a non-existent or half-finished .so file. At least I think that's what happens. Unfortunately I have no idea how to fix this within the current makefile framework. I tried reordering the dependencies (making the symlink targets depend on the lib instead of the other way around) but those all resulted in build failures. cheers _______________________________________________ sr-dev mailing list sr-dev(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev