option (BUILD_WITH_STATIC_CRT "Enables use of staticaly linked CRT" OFF)

# Note: CMAKE_CXX_FLAGS_<FOO> is a directory level option, however. 
# Also, this option has the downside of leaving /MD visible in the cache editor although it has no effect.
# http://www.vtk.org/Wiki/CMake_FAQ#Dynamic_Replace
		
if(MSVC)
	if(BUILD_WITH_STATIC_CRT)
		foreach(flag_var
				CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
				CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
				CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
				CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
		   if(${flag_var} MATCHES "/MD")
			  string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
		   endif(${flag_var} MATCHES "/MD")

		   if(${flag_var} MATCHES "/MDd")
			  string(REGEX REPLACE "/MDd" "/MTd" ${flag_var} "${${flag_var}}")
		   endif(${flag_var} MATCHES "/MDd")		   
		endforeach(flag_var)
		
		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /NODEFAULTLIB:atlthunk.lib /NODEFAULTLIB:msvcrt.lib /NODEFAULTLIB:msvcrtd.lib")
		
		set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} /NODEFAULTLIB:libcmt.lib")
		set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /NODEFAULTLIB:libcmtd.lib")
				
	else(BUILD_WITH_STATIC_CRT)
		foreach(flag_var
				CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
				CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
				CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
				CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
		   if(${flag_var} MATCHES "/MT")
			  string(REGEX REPLACE "/MT" "/MD" ${flag_var} "${${flag_var}}")
		   endif(${flag_var} MATCHES "/MT")

		   if(${flag_var} MATCHES "/MTd")
			  string(REGEX REPLACE "/MTd" "/MDd" ${flag_var} "${${flag_var}}")
		   endif(${flag_var} MATCHES "/MTd")		   
		endforeach(flag_var)
	
	endif(BUILD_WITH_STATIC_CRT)
endif(MSVC)