From 72e56d63958f323476b16f69ccd38ed09a8fa3e7 Mon Sep 17 00:00:00 2001

From: David Seifert <soap@gentoo.org>

Date: Tue, 1 May 2018 14:21:02 +0200

Subject: [PATCH 14/16] Allow `required : false` for OpenMP dependency

* Currently `required : true` is implicitly assumed, making

  optional use of OpenMP not possible.

---

 mesonbuild/dependencies/misc.py | 8 +++++++-

 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/mesonbuild/dependencies/misc.py b/mesonbuild/dependencies/misc.py

index d4525b11..cf84123d 100644

--- a/mesonbuild/dependencies/misc.py

+++ b/mesonbuild/dependencies/misc.py

@@ -253,7 +253,13 @@ class OpenMPDependency(ExternalDependency):

         language = kwargs.get('language')

         super().__init__('openmp', environment, language, kwargs)

         self.is_found = False

-        openmp_date = self.compiler.get_define('_OPENMP', '', self.env, [], [self])

+        try:

+            openmp_date = self.compiler.get_define('_OPENMP', '', self.env, [], [self])

+        except mesonlib.EnvironmentException as e:

+            mlog.debug('OpenMP support not available in the compiler')

+            mlog.debug(e)

+            openmp_date = False

+

         if openmp_date:

             self.version = self.VERSIONS[openmp_date]

             if self.compiler.has_header('omp.h', '', self.env, dependencies=[self]):

-- 

2.17.0