# DP: Allow setting BASECFLAGS, OPT and EXTRA_LDFLAGS (like, CC, CXX, CPP,
# DP: CFLAGS, CPPFLAGS, CCSHARED, LDSHARED) from the environment.

Index: b/Lib/distutils/sysconfig.py
===================================================================
--- a/Lib/distutils/sysconfig.py
+++ b/Lib/distutils/sysconfig.py
@@ -174,10 +174,12 @@ def customize_compiler(compiler):
                 _osx_support.customize_compiler(_config_vars)
                 _config_vars['CUSTOMIZED_OSX_COMPILER'] = 'True'
 
-        (cc, cxx, opt, cflags, ccshared, ldshared, so_ext, ar, ar_flags) = \
-            get_config_vars('CC', 'CXX', 'OPT', 'CFLAGS',
-                            'CCSHARED', 'LDSHARED', 'SO', 'AR',
-                            'ARFLAGS')
+        (cc, cxx, opt, cflags, extra_cflags, basecflags,
+         ccshared, ldshared, so_ext, ar, ar_flags,
+         configure_cppflags, configure_cflags, configure_ldflags) = \
+            get_config_vars('CC', 'CXX', 'OPT', 'CFLAGS', 'EXTRA_CFLAGS', 'BASECFLAGS',
+                            'CCSHARED', 'LDSHARED', 'SO', 'AR', 'ARFLAGS',
+                            'CONFIGURE_CPPFLAGS', 'CONFIGURE_CFLAGS', 'CONFIGURE_LDFLAGS')
 
         if 'CC' in os.environ:
             newcc = os.environ['CC']
@@ -198,13 +200,27 @@ def customize_compiler(compiler):
             cpp = cc + " -E"           # not always
         if 'LDFLAGS' in os.environ:
             ldshared = ldshared + ' ' + os.environ['LDFLAGS']
+        elif configure_ldflags:
+            ldshared = ldshared + ' ' + configure_ldflags
+        if 'BASECFLAGS' in os.environ:
+            basecflags = os.environ['BASECFLAGS']
+        if 'OPT' in os.environ:
+            opt = os.environ['OPT']
+        cflags = ' '.join(str(x) for x in (basecflags, opt, extra_cflags) if x)
         if 'CFLAGS' in os.environ:
-            cflags = opt + ' ' + os.environ['CFLAGS']
+            cflags = ' '.join(str(x) for x in (opt, basecflags, os.environ['CFLAGS'], extra_cflags) if x)
             ldshared = ldshared + ' ' + os.environ['CFLAGS']
+        elif configure_cflags:
+            cflags = ' '.join(str(x) for x in (opt, basecflags, configure_cflags, extra_cflags) if x)
+            ldshared = ldshared + ' ' + configure_cflags
         if 'CPPFLAGS' in os.environ:
             cpp = cpp + ' ' + os.environ['CPPFLAGS']
             cflags = cflags + ' ' + os.environ['CPPFLAGS']
             ldshared = ldshared + ' ' + os.environ['CPPFLAGS']
+        elif configure_cppflags:
+            cpp = cpp + ' ' + configure_cppflags
+            cflags = cflags + ' ' + configure_cppflags
+            ldshared = ldshared + ' ' + configure_cppflags
         if 'AR' in os.environ:
             ar = os.environ['AR']
         if 'ARFLAGS' in os.environ: