FEAT: add check to ensure compilation without warning for a piece of code.

cournape · cournape · commit 2b1179f65717 · 2014-07-06T17:57:01.000+09:00
diff --git a/numpy/distutils/command/autodist.py b/numpy/distutils/command/autodist.py
@@ -58,3 +58,10 @@ def check_gcc_function_attribute(cmd, attribute, name):
     if not ret or len(output) > 0:
         return False
     return True
+
+def check_compile_without_warning(cmd, body):
+    cmd._check_compiler()
+    ret, output = cmd.try_output_compile(body, None, None)
+    if not ret or len(output) > 0:
+        return False
+    return True
diff --git a/numpy/distutils/command/config.py b/numpy/distutils/command/config.py
@@ -17,7 +17,9 @@
 from numpy.distutils.exec_command import exec_command
 from numpy.distutils.mingw32ccompiler import generate_manifest
 from numpy.distutils.command.autodist import (check_gcc_function_attribute,
-                                              check_inline, check_compiler_gcc4)
+                                              check_inline,
+                                              check_compiler_gcc4,
+                                              check_compile_without_warning)
 from numpy.distutils.compat import get_exception
 
 LANG_EXT['f77'] = '.f'
@@ -426,6 +428,10 @@ def check_compiler_gcc4(self):
     def check_gcc_function_attribute(self, attribute, name):
         return check_gcc_function_attribute(self, attribute, name)
 
+    def check_compile_without_warning(self, code):
+        """Returns True if the given code may be compiled without warning."""
+        return check_compile_without_warning(self, code)
+
     def get_output(self, body, headers=None, include_dirs=None,
                    libraries=None, library_dirs=None,
                    lang="c", use_tee=None):
