From: Bruno Turcksin <bruno.turcksin@gmail.com>
Date: Wed, 19 Aug 2015 19:07:08 +0000 (-0500)
Subject: Add debug flag when testing for support of C++14.
X-Git-Tag: v8.4.0-rc2~584^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F1390%2Fhead;p=dealii.git

Add debug flag when testing for support of C++14.
---

diff --git a/cmake/checks/check_01_cxx_features.cmake b/cmake/checks/check_01_cxx_features.cmake
index 2c46133e0e..32d49236cc 100644
--- a/cmake/checks/check_01_cxx_features.cmake
+++ b/cmake/checks/check_01_cxx_features.cmake
@@ -103,6 +103,10 @@ IF(NOT DEFINED DEAL_II_WITH_CXX14 OR DEAL_II_WITH_CXX14)
     MESSAGE(STATUS "Using C++ version flag \"${DEAL_II_CXX_VERSION_FLAG}\"")
     PUSH_CMAKE_REQUIRED("${DEAL_II_CXX_VERSION_FLAG}")
 
+    # Some versions of clang are feature complete but do not have debug
+    # information.
+    PUSH_CMAKE_REQUIRED("-g")
+
     #
     # This test does not guarantee full C++14 support, but virtually every
     # compiler with some C++14 support implements this.