Introduce dataonly for the pkgconfig module

This allows users to disable writing out the inbuilt variables to
the pkg-config file as they might actualy not be required.

One reason to have this is for architecture-independent pkg-config
files in projects which also have architecture-dependent outputs.

For example : https://gitlab.freedesktop.org/wayland/weston/issues/269

Fixes #4011

1 files changed, 5 insertions, 0 deletions

diff --git a/run_unittests.py b/run_unittests.py
index 7c2ae05..69de23a 100755
--- a/run_unittests.py
+++ b/run_unittests.py
@@ -4969,6 +4969,11 @@ class LinuxlikeTests(BasePlatformTests):
         self.assertEqual(foo_dep.get_pkgconfig_variable('foo', {}), 'bar')
         self.assertPathEqual(foo_dep.get_pkgconfig_variable('datadir', {}), '/usr/data')
 
+        libhello_nolib = PkgConfigDependency('libhello_nolib', env, kwargs)
+        self.assertTrue(libhello_nolib.found())
+        self.assertEqual(libhello_nolib.get_link_args(), [])
+        self.assertEqual(libhello_nolib.get_compile_args(), [])
+
     def test_pkgconfig_gen_deps(self):
         '''
         Test that generated pkg-config files correctly handle dependencies