From 089974eb926717c7e04ae332347eacec190bee73 Mon Sep 17 00:00:00 2001
From: Victor Zverovich <victor.zverovich@gmail.com>
Date: Wed, 30 Apr 2014 07:36:47 -0700
Subject: [PATCH] Fix compiler flags check.

---
 CMakeLists.txt | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 36e5b820..05f91565 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,10 +11,13 @@ endif ()
 project(FORMAT)
 
 include(CheckCXXCompilerFlag)
-check_cxx_compiler_flag(-std=c++11 HAVE_STD_CPP11_FLAG)
-if (NOT HAVE_STD_CPP11_FLAG)
-  check_cxx_compiler_flag(-std=c++0x HAVE_STD_CPP11_FLAG)
-endif ()
+foreach (flag -std=c++11 -std=c++0x)
+  check_cxx_compiler_flag(${flag} HAVE_STD_CPP11_FLAG)
+  if (HAVE_STD_CPP11_FLAG)
+    set(CPP11_FLAG ${flag})
+    break ()
+  endif ()
+endforeach ()
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
   "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
@@ -40,7 +43,7 @@ if (CMAKE_COMPILER_IS_GNUCXX)
     "-Wall -Wextra -pedantic")
 endif ()
 if (HAVE_STD_CPP11_FLAG)
-  set_target_properties(format PROPERTIES COMPILE_FLAGS "-std=c++11")
+  set_target_properties(format PROPERTIES COMPILE_FLAGS ${CPP11_FLAG})
   # Test compilation with default flags.
   add_library(testformat format.cc)
 endif ()