Re: [PATCH] selftests: gpio: Find libmount with pkg-config if available

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On Wed, 5 Dec 2018 at 22:50, Linus Walleij <linus.walleij@xxxxxxxxxx> wrote:
>
> Sorry for top-posting,
>
> I don't understand the selftest environment very well so I do not know
> if this is the right thing to do.
>
> I can merge the patch through the GPIO tree but I need a nod from
> someone wise, like Shuah Khan or Anders Roxell (Anders has been
> using the GPIO selftests) that this is the direction we want to go.

Yes this makes sense and its already in linux-next.

Cheers,
Anders

>
> Yours,
> Linus Walleij
>
> On Tue, Oct 16, 2018 at 11:47 PM Daniel Díaz <daniel.diaz@xxxxxxxxxx> wrote:
>
> > If pkg-config is available, use it to define the CFLAGS and
> > LDLIBS needed for libmount; else, use the current hard-coded
> > paths and options.
> >
> > Using pkg-config is very helpful for cross-compilation
> > environments, and is sometimes readily available on developer
> > boxes to ensure we get the right compiler/linker options for
> > the given package.
> >
> > Signed-off-by: Daniel Díaz <daniel.diaz@xxxxxxxxxx>
> > ---
> >  tools/testing/selftests/gpio/Makefile | 10 ++++++++--
> >  1 file changed, 8 insertions(+), 2 deletions(-)
> >
> > diff --git a/tools/testing/selftests/gpio/Makefile b/tools/testing/selftests/gpio/Makefile
> > index 46648427d537..f22b22aef7bf 100644
> > --- a/tools/testing/selftests/gpio/Makefile
> > +++ b/tools/testing/selftests/gpio/Makefile
> > @@ -1,7 +1,13 @@
> >  # SPDX-License-Identifier: GPL-2.0
> >
> > -CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/
> > -LDLIBS += -lmount -I/usr/include/libmount
> > +MOUNT_CFLAGS := $(shell pkg-config --cflags mount 2>/dev/null)
> > +MOUNT_LDLIBS := $(shell pkg-config --libs mount 2>/dev/null)
> > +ifeq ($(MOUNT_LDLIBS),)
> > +MOUNT_LDLIBS := -lmount -I/usr/include/libmount
> > +endif
> > +
> > +CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/ $(MOUNT_CFLAGS)
> > +LDLIBS += $(MOUNT_LDLIBS)
> >
> >  TEST_PROGS := gpio-mockup.sh
> >  TEST_FILES := gpio-mockup-sysfs.sh
> > --
> > 2.17.1
> >




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