include(CheckCXXCompilerFlag)
+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.")
+ endif()
+endif()
+
if(NOT __VISUALC__ AND NOT __BORLANDC__)
CHECK_CXX_COMPILER_FLAG("-std=gnu++11" HAVE_CXX11)
CHECK_CXX_COMPILER_FLAG("-std=gnu++0x" HAVE_CXX0X)
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_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 ")
- endif()
- if(COMPILER_C_VERSION_MAJOR_MINOR STREQUAL "4.6")
- #some old compilers emit bogus warnings here, see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45978 . Avoid failing the build in this case
- set(warnCFLAGS "${warnCFLAGS}-Wno-error=array-bounds")
- endif()
endif()
set(CMAKE_CXX_FLAGS "${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")
endif()
else()
# On non-windows, 4.6 is enough for that
- if(COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.5" AND LINKER_VERSION STRGREATER "2.22")
+ if(LINKER_VERSION STRGREATER "2.22")
set(optCFLAGS "${optCFLAGS} -flto ")
endif()
endif()