Index: Lib/distutils/sysconfig.py
===================================================================
--- Lib/distutils/sysconfig.py	(revision 86610)
+++ Lib/distutils/sysconfig.py	(working copy)
@@ -160,6 +160,8 @@
             cpp = cc + " -E"           # not always
         if 'LDFLAGS' in os.environ:
             ldshared = ldshared + ' ' + os.environ['LDFLAGS']
+        if 'OPT' in os.environ:
+            opt = os.environ['OPT']
         if 'CFLAGS' in os.environ:
             cflags = opt + ' ' + os.environ['CFLAGS']
             ldshared = ldshared + ' ' + os.environ['CFLAGS']