Work around for older version of cmake.

CMakeLists.txt

@@ -83,17 +83,17 @@ SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4800 /wd4805")
 SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /wd4800 /wd4805")
 
 # Disable warnings in Visual Studio 8 and above
-IF(MSVC AND MSVC_VERSION GREATER 1399)
+IF(MSVC AND NOT CMAKE_GENERATOR MATCHES "Visual Studio 7")
     SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /wd4996")
     SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /wd4996")
     SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /wd4996")
     SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /wd4996")
     SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /wd4996")
     SET(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} /wd4996")
-ENDIF(MSVC AND MSVC_VERSION GREATER 1399)
+ENDIF(MSVC AND NOT CMAKE_GENERATOR MATCHES "Visual Studio 7")
 
 # Settings for Visual Studio 7 and above.  
-IF(MSVC AND MSVC_VERSION GREATER 1299)
+IF(MSVC)
     # replace /MDd with /MTd
     STRING(REPLACE "/MD"  "/MT"  CMAKE_C_FLAGS_RELEASE          ${CMAKE_C_FLAGS_RELEASE})
     STRING(REPLACE "/MD"  "/MT"  CMAKE_C_FLAGS_RELWITHDEBINFO   ${CMAKE_C_FLAGS_RELWITHDEBINFO})
@@ -123,7 +123,7 @@ IF(MSVC AND MSVC_VERSION GREATER 1299)
     IF(NOT tmp_manifest)
         SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /MANIFEST:NO")
     ENDIF(NOT tmp_manifest)
-ENDIF(MSVC AND MSVC_VERSION GREATER 1299)
+ENDIF(MSVC)
 
 ADD_DEFINITIONS("-D_WINDOWS -D__WIN__ -D_CRT_SECURE_NO_DEPRECATE")