ObjFW  Diff

		AX_CHECK_COMPILER_FLAGS(-pthread, [
			CPPFLAGS="$CPPFLAGS -pthread"
		], [
			CPPFLAGS="$CPPFLAGS -D_REENTRANT -D_THREAD_SAFE"
		])

		LIBS="$LIBS -lpthread"
		AC_CHECK_LIB(pthread, pthread_create, LIBS="$LIBS -lpthread")

		AC_TRY_LINK([
			#include <pthread.h>
		], [
			pthread_create(NULL, NULL, NULL, NULL);
		], [], [
			AC_MSG_ERROR(No supported threads found!)
		])