Merge pull request matplotlib#10536 from matplotlib/auto-backport-of-pr-10484

dstansby · web-flow · commit e7ab08ef86d1 · 2018-02-20T09:07:04.000Z
Backport PR matplotlib#10484 on branch v2.2.x
diff --git a/setupext.py b/setupext.py
@@ -1333,6 +1333,8 @@ def add_flags(self, ext):
         else:
             ext.include_dirs.insert(0, 'extern')
             ext.sources.extend(sorted(glob.glob('extern/libqhull/*.c')))
+            if sysconfig.get_config_var('LIBM') == '-lm':
+                ext.libraries.extend('m')
 
 
 class TTConv(SetupPackage):
