build: tweak PKG_CHECK_MODULES calls There's no need to call AC_SUBST after a PKG_CHECK_MODULES call, since the variables are always set. As an example: the produced Makefile.in and Makefile are identical before/after this change. Similarly, we don't need the "dummy=yes" and manual AC_MSG_ERROR() call - pkg-config (or pkgconf) will produce the same and in some cases better error messages.

Diffstat

1 files changed, 12 insertions(+), 47 deletions(-)