-set(warnCFLAGS "")
-set(optCFLAGS "")
-
##
-## Request full debugging flags
+## This file is in charge of setting our paranoid flags with regard to warnings and optimization.
##
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99 -g3")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g3")
-set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -g")
+## These flags do break some classical CMake tests, so you don't
+## want to do so before the very end of the configuration.
+##
+## Other compiler flags (C/C++ standard version) are tested and set
+## by the beginning of the configuration, directly in ~/CMakeList.txt
+
+set(warnCFLAGS "")
+set(optCFLAGS "")
-##
-## We need a decent support of the c++11 standard
-##
-include(CheckCXXCompilerFlag)
-CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
-if(COMPILER_SUPPORTS_CXX11)
- set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
-else()
- message(FATAL_ERROR
- "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. "
- "Please use a decent C++ compiler.")
-endif()
-if (CMAKE_COMPILER_IS_GNUCC)
- if (COMPILER_C_VERSION_MAJOR_MINOR STRLESS "4.7")
- message(FATAL_ERROR
- "SimGrid needs g++ version 4.7 to compile "
- "(c++11 support of previous versions is too limited).")
- endif()
-endif()
if(enable_compile_warnings)
if(CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wclobbered -Wno-error=clobbered")
endif()
+ if (CMAKE_CXX_COMPILER_ID MATCHES "Clang") # don't care about class that become struct
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-mismatched-tags")
+ endif()
- set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -Wall") # FIXME: Q&D hack
-
+ set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -Wall")
set(CMAKE_JAVA_COMPILE_FLAGS "-Xlint")
endif()
if(CMAKE_COMPILER_IS_GNUCC AND (NOT enable_model-checking))
set(optCFLAGS "${optCFLAGS} -finline-functions ")
if(WIN32)
- if (COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.7")
+ if (COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.8")
# On windows, we need 4.8 or higher to enable lto because of http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50293
- set(optCFLAGS "${optCFLAGS} -flto ")
+ #
+ # We are experiencing assertion failures even with 4.8 on MinGW.
+ # Push the support forward: will see if 4.9 works when we test it.
+ set(optCFLAGS "${optCFLAGS} -flto ")
endif()
else()
# On non-windows, 4.6 is enough for that
endforeach()
endif()
-if(APPLE AND COMPILER_C_VERSION_MAJOR_MINOR MATCHES "4.6")
- set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-declarations")
- set(optCFLAGS "-O0 ")
-endif()
-
if(NOT enable_debug)
set(CMAKE_C_FLAGS "-DNDEBUG ${CMAKE_C_FLAGS}")
set(CMAKE_CXX_FLAGS "-DNDEBUG ${CMAKE_CXX_FLAGS}")
set(CMAKE_C_FLAGS "-DMSG_USE_DEPRECATED ${CMAKE_C_FLAGS}")
endif()
-set(CMAKE_C_FLAGS "${optCFLAGS} ${warnCFLAGS} ${CMAKE_C_FLAGS}")
-
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${optCFLAGS} ${warnCFLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${optCFLAGS}")
# Try to make Mac a bit more complient to open source standards