1 files changed, 10 insertions, 0 deletions
diff --git a/run_unittests.py b/run_unittests.py
index 20464e0..1d80aac 100755
--- a/run_unittests.py
+++ b/run_unittests.py
@@ -1556,5 +1556,15 @@ class RewriterTests(unittest.TestCase):
         self.assertEqual(s2, self.read_contents('sub2/meson.build'))
 
 
+def unset_envs():
+    # For unit tests we must fully control all commend lines
+    # so that there are no unexpected changes coming from the
+    # environment, for example when doing a package build.
+    varnames = ['CPPFLAGS', 'LDFLAGS'] + list(mesonbuild.environment.cflags_mapping.values())
+    for v in varnames:
+        if v in os.environ:
+            del os.environ[v]
+
 if __name__ == '__main__':
+    unset_envs()
     unittest.main(buffer=True)