Merge pull request #7634 from rgommers/cc_envvar_build

BLD: correct C compiler customization in system_info.py  Closes gh-7606.

1 files changed, 5 insertions, 3 deletions

diff --git a/numpy/distutils/system_info.py b/numpy/distutils/system_info.py
index 254d6a8d4..9f5f4e6c0 100644
--- a/numpy/distutils/system_info.py
+++ b/numpy/distutils/system_info.py
@@ -134,9 +134,9 @@ if sys.version_info[0] < 3:
 else:
     from configparser import NoOptionError
     from configparser import RawConfigParser as ConfigParser
-# It seems that some people are importing ConfigParser from here so is 
-# good to keep its class name. Use of RawConfigParser is needed in 
-# order to be able to load path names with percent in them, like 
+# It seems that some people are importing ConfigParser from here so is
+# good to keep its class name. Use of RawConfigParser is needed in
+# order to be able to load path names with percent in them, like
 # `feature%2Fcool` which is common on git flow branch names.
 
 from distutils.errors import DistutilsError
@@ -1710,6 +1710,7 @@ class blas_info(system_info):
         # cblas or blas
         res = False
         c = distutils.ccompiler.new_compiler()
+        c.customize('')
         tmpdir = tempfile.mkdtemp()
         s = """#include <cblas.h>
         int main(int argc, const char *argv[])
@@ -1790,6 +1791,7 @@ class openblas_lapack_info(openblas_info):
     def check_embedded_lapack(self, info):
         res = False
         c = distutils.ccompiler.new_compiler()
+        c.customize('')
         tmpdir = tempfile.mkdtemp()
         s = """void zungqr();
         int main(int argc, const char *argv[])