From 0604fe67ece7679b0360e7c16adfdbf435461002 Mon Sep 17 00:00:00 2001
From: Martin Hierholzer <martin.hierholzer@desy.de>
Date: Tue, 20 Sep 2016 13:43:36 +0200
Subject: [PATCH] added script to enable the C++ 11 support
---
cmake/enable_cxx11_support.cmake | 37 ++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
create mode 100644 cmake/enable_cxx11_support.cmake
diff --git a/cmake/enable_cxx11_support.cmake b/cmake/enable_cxx11_support.cmake
new file mode 100644
index 0000000..848fac3
--- /dev/null
+++ b/cmake/enable_cxx11_support.cmake
@@ -0,0 +1,37 @@
+#######################################################################################################################
+# enable_cxx11_support.cmake
+#
+# Enable C++-11 support by selecting the appropriate compiler flag. The flag will be appended to all of the following
+# cmake variables:
+# - CMAKE_CXX_FLAGS
+# - ${PROJECT_NAME}_CXX_FLAGS
+# - ${PROJECT_NAME}_CMAKE_CXX_FLAGS
+#
+#######################################################################################################################
+
+#######################################################################################################################
+#
+# IMPORTANT NOTE:
+#
+# DO NOT MODIFY THIS FILE inside a project. Instead update the project-template repository and pull the change from
+# there. Make sure to keep the file generic, since it will be used by other projects, too.
+#
+# If you have modified this file inside a project despite this warning, make sure to cherry-pick all your changes
+# into the project-template repository immediately.
+#
+#######################################################################################################################
+
+include(CheckCXXCompilerFlag)
+CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
+CHECK_CXX_COMPILER_FLAG("-std=c++0x" COMPILER_SUPPORTS_CXX0X)
+if(COMPILER_SUPPORTS_CXX11)
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
+ set(${PROJECT_NAME}_CXX_FLAGS "${${PROJECT_NAME}_CXX_FLAGS} -std=c++11")
+ set(${PROJECT_NAME}_CMAKE_CXX_FLAGS "${${PROJECT_NAME}_CMAKE_CXX_FLAGS} -std=c++11")
+elseif(COMPILER_SUPPORTS_CXX0X)
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
+ set(${PROJECT_NAME}_CXX_FLAGS "${${PROJECT_NAME}_CXX_FLAGS} -std=c++0x")
+ set(${PROJECT_NAME}_CMAKE_CXX_FLAGS "${${PROJECT_NAME}_CMAKE_CXX_FLAGS} -std=c++0x")
+else()
+ message(STATUS "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
+endif()
--
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