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-rw-r--r--numpy/distutils/npy_pkg_config.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/numpy/distutils/npy_pkg_config.py b/numpy/distutils/npy_pkg_config.py
index e559e8588..fed95b921 100644
--- a/numpy/distutils/npy_pkg_config.py
+++ b/numpy/distutils/npy_pkg_config.py
@@ -313,7 +313,8 @@ def _read_config_imp(filenames, dirs=None):
# Update sec dict
for oname, ovalue in nsections[rname].items():
- sections[rname][oname] += ' %s' % ovalue
+ if ovalue:
+ sections[rname][oname] += ' %s' % ovalue
return meta, vars, sections, reqs