fix PROJECT_VERSION problem for cmake < 3.0 #32

Author: shijiashuai

CMakeLists.txt

@@ -1,16 +1,21 @@
 cmake_minimum_required(VERSION 2.8.12)
 
-cmake_policy(SET CMP0048 NEW)
-project(thundersvm VERSION 0.1.0 LANGUAGES C CXX)
+if (CMAKE_VERSION VERSION_LESS "3.0")
+    project(thundersvm C CXX)
+    set(PROJECT_VERSION 0.1.0)
+else ()
+    cmake_policy(SET CMP0048 NEW)
+    project(thundersvm VERSION 0.1.0 LANGUAGES C CXX)
+endif ()
 set(USE_CUDA ON CACHE BOOL "Compile with CUDA")
 set(USE_EIGEN OFF CACHE BOOL "Compile with Eigen")
 set(CMAKE_BUILD_TYPE Release)
 find_package(Threads REQUIRED)
 find_package(OpenMP REQUIRED)
 if (OPENMP_FOUND)
-    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
-    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
-endif()
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
+endif ()
 
 if (USE_CUDA)
     message("Compile with CUDA")