From: Bruno Turcksin <bruno.turcksin@gmail.com>
Date: Thu, 3 Sep 2015 23:33:32 +0000 (-0500)
Subject: Workaround a bug with Ubuntu 14.04
X-Git-Tag: v8.4.0-rc2~480^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F1524%2Fhead;p=dealii.git

Workaround a bug with Ubuntu 14.04
---

diff --git a/cmake/checks/check_01_cxx_features.cmake b/cmake/checks/check_01_cxx_features.cmake
index a21768720e..1bfd262585 100644
--- a/cmake/checks/check_01_cxx_features.cmake
+++ b/cmake/checks/check_01_cxx_features.cmake
@@ -224,6 +224,12 @@ IF(NOT DEFINED DEAL_II_WITH_CXX11 OR DEAL_II_WITH_CXX11)
     #
     IF(DEAL_II_ALLOW_PLATFORM_INTROSPECTION)
       PUSH_CMAKE_REQUIRED("-pthread")
+      # 
+      # On Ubuntu 14.04, the code below won't run without the flag 
+      # -Wl,-no-as-needed. However, deal.II will work fine without 
+      # the flag.
+      #
+      PUSH_CMAKE_REQUIRED("-Wl,-no-as-needed")
       CHECK_CXX_SOURCE_RUNS(
         "
         #include <thread>