bpo-11191: skip unsupported test_distutils case for AIX with xlc (GH-8709)

aixtools · ncoghlan · commit ed57e13df60c · 2018-12-29T00:03:17.000+10:00
Command line options for the xlc compiler behave differently from gcc and clang,
so skip this test case for now when xlc is the compiler.

Patch by aixtools (Michael Felt)
diff --git a/Lib/distutils/command/config.py b/Lib/distutils/command/config.py
@@ -328,7 +328,6 @@ def check_header(self, header, include_dirs=None, library_dirs=None,
         return self.try_cpp(body="/* No body */", headers=[header],
                             include_dirs=include_dirs)
 
-
 def dump_file(filename, head=None):
     """Dumps a file content into log.info.
 
diff --git a/Lib/distutils/tests/test_config_cmd.py b/Lib/distutils/tests/test_config_cmd.py
@@ -39,11 +39,17 @@ def test_dump_file(self):
 
     @unittest.skipIf(sys.platform == 'win32', "can't test on Windows")
     def test_search_cpp(self):
+        import shutil
         cmd = missing_compiler_executable(['preprocessor'])
         if cmd is not None:
             self.skipTest('The %r command is not found' % cmd)
         pkg_dir, dist = self.create_dist()
         cmd = config(dist)
+        cmd._check_compiler()
+        compiler = cmd.compiler
+        is_xlc = shutil.which(compiler.preprocessor[0]).startswith("/usr/vac")
+        if is_xlc:
+            self.skipTest('xlc: The -E option overrides the -P, -o, and -qsyntaxonly options')
 
         # simple pattern searches
         match = cmd.search_cpp(pattern='xxx', body='/* xxx */')
diff --git a/Misc/NEWS.d/next/Tests/2018-08-08-22-41-30.bpo-11191.eq9tSH.rst b/Misc/NEWS.d/next/Tests/2018-08-08-22-41-30.bpo-11191.eq9tSH.rst
@@ -0,0 +1,2 @@
+Skip the distutils test 'test_search_cpp' when using XLC as compiler
+patch by aixtools (Michael Felt)

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+Skip the distutils test 'test_search_cpp' when using XLC as compiler`
	`2`	`+patch by aixtools (Michael Felt)`