PKG_CHECK_MODULES: Check if $pkg_cv_[]$1[]_LIBS works

[H.J. Lu]

On Tue, Jul 28, 2020 at 7:02 AM Alan Modra <amodra@gmail.com> wrote:
>
> And this fixes the failure, but it's not very elegant, so I'm not
> going to commit it.  You really should only be doing the extra
> AC_TRY_LINK if debuginfod.so was added to libs.

That is what my patch does:

dnl Check whether $pkg_cv_[]$1[]_LIBS works.
if test $pkg_failed = no; then
  pkg_save_LDFLAGS="$LDFLAGS"
  LDFLAGS="$LDFLAGS $pkg_cv_[]$1[]_LIBS"
  AC_TRY_LINK([],[], [], [pkg_failed=yes])
  LDFLAGS=$pkg_save_LDFLAGS
fi

In your case, AC_TRY_LINK isn't used since $pkg_failed = yes.

-- 
H.J.