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-rw-r--r--giscanner/sourcescanner.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/giscanner/sourcescanner.py b/giscanner/sourcescanner.py
index 9a8bd41b..dab16027 100644
--- a/giscanner/sourcescanner.py
+++ b/giscanner/sourcescanner.py
@@ -289,6 +289,7 @@ class SourceScanner(object):
# Note that the generated dumper program is
# still built and linked by Visual C++.
cpp_args = ['gcc']
+ cpp_args += os.environ.get('CPPFLAGS', '').split()
cpp_args += os.environ.get('CFLAGS', '').split()
cpp_args += ['-E', '-C', '-I.', '-']
cpp_args += self._cpp_options