Don't forbid the use of MSVC, to test AppVeyor

[simgrid.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ba2abf5..d27ec86 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,24 +20,26 @@ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g3")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g3")
 set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -g")
 
+if (CMAKE_COMPILER_IS_GNUCC)
+  if (COMPILER_CXX_VERSION_MAJOR_MINOR STRLESS "4.7")
+    message(FATAL_ERROR
+            "SimGrid needs at least g++ version 4.7 to compile "
+           "(c++11 support of previous versions is too limited).")
+  endif()
+endif()
+
 ## We need a decent support of the c++11 standard
 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 "${CMAKE_CXX_FLAGS} -std=c++11")
-elseif(COMPILER_SUPPORTS_CXX0X)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
-else()
-  message(FATAL_ERROR 
-          "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. "
-         "Please use a decent C++ compiler.")
-endif()
-if (CMAKE_COMPILER_IS_GNUCC)
-  if (COMPILER_CXX_VERSION_MAJOR_MINOR STRLESS "4.7")
-    message(FATAL_ERROR
-            "SimGrid needs g++ version 4.7 to compile "
-           "(c++11 support of previous versions is too limited).")
+else() 
+  if(MSVC)
+    message("MSVC is believed to have a sufficient C++11 support. Not sure")
+  else()
+    message(FATAL_ERROR 
+            "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. "
+           "Please use a decent C++ compiler.")
   endif()
 endif()
 
@@ -47,13 +49,16 @@ CHECK_C_COMPILER_FLAG("-std=gnu11" COMPILER_SUPPORTS_C11)
 if(COMPILER_SUPPORTS_C11)
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu11")
 else()
-  message(FATAL_ERROR 
-          "The compiler ${CMAKE_C_COMPILER} has no C11 support. "
-         "Please use a decent C compiler "
-         "(note that c++11 support of ${CMAKE_CXX_COMPILER} seems ok).")
+  if(MSVC)
+    message("MSVC is believed to have a sufficient C++11 support. Not sure")
+  else()
+    message(FATAL_ERROR 
+            "The compiler ${CMAKE_C_COMPILER} has no C11 support. "
+           "Please use a decent C compiler "
+           "(note that c++11 support of ${CMAKE_CXX_COMPILER} seems ok).")
+  endif()
 endif()
 
-
 ### SMPI vs. Fortran
 if ((NOT DEFINED enable_smpi OR enable_smpi) AND NOT APPLE) # smpi is enabled by default
   # Call enable_language(Fortran) in order to load the build rules for
@@ -151,7 +156,7 @@ string(REGEX MATCH "[0-9].[0-9]*" LINKER_VERSION "${LINKER_VERSION}")
 
 string(REGEX MATCH "cl.exe" VBC "${CMAKE_C_COMPILER}")
 if(VBC)
-  message(FATAL_ERROR "VB is not yet supported by Simgrid.")
+  message("VB is not yet supported by Simgrid. Proceed with extrem caution")
 endif()
 
 ### Find programs and paths
@@ -220,7 +225,7 @@ if(WIN32)
       # set(__GNUC_MINOR__ ${COMPILER_C_MINOR_VERSION})
     endif()
   else()
-    message(FATAL_ERROR "Please use MinGW to compile SimGrid!")
+    message("You REALLY should use MinGW to compile SimGrid on Windows!")
   endif()
 
   if(ARCH_32_BITS)      ### Arch 32bits