Define a version for _XOPEN_SOURCE

[simgrid.git] / buildtools / Cmake / Flags.cmake

diff --git a/buildtools/Cmake/Flags.cmake b/buildtools/Cmake/Flags.cmake
index 27aa988..1ad0941 100644 (file)
--- a/buildtools/Cmake/Flags.cmake
+++ b/buildtools/Cmake/Flags.cmake
@@ -4,12 +4,12 @@ set(optCFLAGS "")
 include(CheckCXXCompilerFlag)
 
 if(NOT __VISUALC__ AND NOT __BORLANDC__)
-  CHECK_CXX_COMPILER_FLAG("-std=c++11" HAVE_CXX11)
-  CHECK_CXX_COMPILER_FLAG("-std=c++0x" HAVE_CXX0X)
+  CHECK_CXX_COMPILER_FLAG("-std=gnu++11" HAVE_CXX11)
+  CHECK_CXX_COMPILER_FLAG("-std=gnu++0x" HAVE_CXX0X)
   if(HAVE_CXX11)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
   elseif(HAVE_CXX0X)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++0x")
   else()
     message(STATUS "Missing support for C++11.")
   endif()
@@ -26,7 +26,7 @@ endif()
 
 if(enable_compile_warnings)
   set(warnCFLAGS "-fno-common -Wall -Wunused -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wno-format-nonliteral -Werror ")
-  if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
+  if(CMAKE_COMPILER_IS_GNUCC)
     set(warnCFLAGS "${warnCFLAGS}-Wclobbered -Wno-error=clobbered ")
     if(COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.5")
       set(warnCFLAGS "${warnCFLAGS}-Wno-error=unused-but-set-variable ")
@@ -37,7 +37,10 @@ if(enable_compile_warnings)
     endif()
   endif()
 
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra  -Wunused -Wpointer-arith -Wchar-subscripts -Wcomment -Wno-unknown-warning-option -Wformat -Wwrite-strings -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wclobbered -Wno-error=clobbered -Wno-format-nonliteral -Werror")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra  -Wunused -Wpointer-arith -Wchar-subscripts -Wcomment  -Wformat -Wwrite-strings -Wno-unused-function -Wno-unused-parameter -Wno-strict-aliasing -Wno-format-nonliteral -Werror")
+  if(CMAKE_COMPILER_IS_GNUCXX)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wclobbered -Wno-error=clobbered")
+  endif()
 
   set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -Wall") # FIXME: Q&D hack
 
@@ -123,7 +126,7 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${optCFLAGS}")
 
 # Try to make Mac a bit more complient to open source standards
 if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE=700")
 endif()
 
 set(TESH_OPTION "")