On Tue, 2015-08-25 at 20:49 +0800, Bamvor Zhang Jian wrote: > > On 08/24/2015 11:48 AM, Michael Ellerman wrote: > > On Fri, 2015-08-14 at 21:43 +0800, Bamvor Jian Zhang wrote: > >> One may pass the "-I /path/to/headers -L /path/to/lib" through > >> CFLAGS_EXTRA for cross compiling. mqueue could compile pass > >> in this way when we provide the popt.h and libpopt.so. And kdbus > >> could compile pass with sys/capability and libcap.so > > > > There should be no need to define a new variable. > > > > You should just update the relevant Makefiles to use CFLAGS += rather than > > CFLAGS =. And then you can just specifiy CFLAGS on the command line.
> yeap, it works for me. There is only one line need to be changed: OK, so please send a patch to update that Makefile. > diff --git a/tools/testing/selftests/mqueue/Makefile > b/tools/testing/selftests/mqueue/Makefile > index 0e3b41e..ca8327f 100644 > --- a/tools/testing/selftests/mqueue/Makefile > +++ b/tools/testing/selftests/mqueue/Makefile > @@ -1,4 +1,4 @@ > -CFLAGS = -O2 > +CFLAGS += -O2 > > all: > $(CC) $(CFLAGS) mq_open_tests.c -o mq_open_tests -lrt And this can be simplified to: LDLIBS = -lrt all: mq_open_tests cheers -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
