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-rw-r--r--waflib/Tools/python.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/waflib/Tools/python.py b/waflib/Tools/python.py
index 25841d0..01a2c9a 100644
--- a/waflib/Tools/python.py
+++ b/waflib/Tools/python.py
@@ -329,6 +329,10 @@ def check_python_headers(conf, features='pyembed pyext'):
conf.find_program([''.join(pybin) + '-config', 'python%s-config' % num, 'python-config-%s' % num, 'python%sm-config' % num], var='PYTHON_CONFIG', msg="python-config", mandatory=False)
if env.PYTHON_CONFIG:
+ # check python-config output only once
+ if conf.env.HAVE_PYTHON_H:
+ return
+
# python2.6-config requires 3 runs
all_flags = [['--cflags', '--libs', '--ldflags']]
if sys.hexversion < 0x2070000: