[LTP] [PATCH 1/1] autoconf: Use pkg-config for keyutils detection

[Li Wang]

Hi Petr,

On Wed, Jan 13, 2021 at 6:47 AM Petr Vorel <pvorel@suse.cz> wrote:

> Hi Li,
>
> ...
> > > From what I understanding, this macro runs the pkg-config tool to check
> > > for the presence of packages against keyutils-libs and sets two
> variables:
> > > LIBKEYUTILS_CFLAGS, LIBKEYUTILS_LIBS accordingly.
>
> > > So the list-of-modules should be the precise name(or version) of the
> > > library, am I right?
> > > See: https://autotools.io/pkgconfig/pkg_check_modules.html
>
> > Thanks for an explanation, but I'm still missing something.
> > In openSUSE:
>
> > $ pkg-config --libs --cflags libkeyutils
> > -lkeyutils
>
> > $ pkg-config --libs --cflags keyutils-libs
> > Package keyutils-libs was not found in the pkg-config search path.
> > Perhaps you should add the directory containing `keyutils-libs.pc'
> > to the PKG_CONFIG_PATH environment variable
> > Package 'keyutils-libs', required by 'virtual:world', not found
>
> > That's correct, because keyutils-devel package has file:
> > /usr/lib64/pkgconfig/libkeyutils.pc
>
> > The same is for Debian, which has
> > /usr/lib/x86_64-linux-gnu/pkgconfig/libkeyutils.pc
>
> > Looking at Fedora:
> > keyutils-libs-devel [1] has /usr/lib64/pkgconfig/libkeyutils.pc.
>
> > Download and unpack the package and run:
> > $ PKG_CONFIG_LIBDIR="$PWD/usr/lib64/pkgconfig/" pkg-config --libs
> --cflags libkeyutils
> > -lkeyutils
>
> And more importantly upstream has libkeyutils.pc.in [1] (not
> keyutils-libs.pc).
>

Thanks for the detailed demo, it seems things not like what I assumed, and I
misunderstood on something about libkeyutils. Your patch looks correct, and
no need to modify it.

-- 
Regards,
Li Wang
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