From 71c57152d964c959343243b6f5a569b525718299 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20Kl=C3=B6ckner?= <inform@tiker.net>
Date: Tue, 14 May 2019 00:25:26 +0200
Subject: [PATCH] Force C++ mode in aksetup to avoid Clang error on -std=c++14

https://gitlab.tiker.net/inducer/pymetis/issues/1
---
 aksetup_helper.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/aksetup_helper.py b/aksetup_helper.py
index e86f4cd..c6ea671 100644
--- a/aksetup_helper.py
+++ b/aksetup_helper.py
@@ -941,7 +941,13 @@ class PybindBuildExtCommand(NumpyBuildExtCommand):
         opts = self.c_opts.get(ct, [])
         if ct in ['unix', 'mingw32']:
             opts.append('-DVERSION_INFO="%s"' % self.distribution.get_version())
+
+            # Force language to C++ to avoid Clang barking at us about an invalid flag for C.
+            # https://gitlab.tiker.net/inducer/pymetis/issues/1
+            opts.extend(["-x", "c++"])
+
             opts.append(cpp_flag(self.compiler))
+
             if has_flag(self.compiler, '-fvisibility=hidden'):
                 opts.append('-fvisibility=hidden')
         elif ct == 'msvc':
-- 
GitLab