Make possibility to exclude the class rvmmeshhelper from the library to get rid of dependence on OpenGl.

For that the cmake Boolean option USE_MESH_HELPER has been added.

Author: nbogdan

cmake-lib/CMakeLists.txt

@@ -6,21 +6,40 @@ if(UNIX)
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -std=gnu++0x")
 endif()
 
-# Add OpenGL dependencies
-set (OpenGL_GL_PREFERENCE LEGACY)
-find_package(OpenGL REQUIRED)
-
-add_library(${PROJECT_NAME} SHARED
-            ../src/api/rvmcolorhelper.cpp
-            ../src/api/rvmmeshhelper.cpp
-            ../src/api/rvmparser.cpp
-            ../src/api/rvmreader.cpp
-            ../src/api/vector3f.cpp
+set (SRC_LIST
+    ../src/api/rvmcolorhelper.cpp
+    ../src/api/rvmparser.cpp
+    ../src/api/rvmreader.cpp
+    ../src/api/vector3f.cpp
 )
 
-set_target_properties(${PROJECT_NAME} PROPERTIES PUBLIC_HEADER "../src/api/lib_export.h;../src/api/rvmcolorhelper.h;../src/api/rvmmeshhelper.h;../src/api/rvmparser.h;../src/api/rvmprimitive.h;../src/api/rvmreader.h;../src/api/vector3f.h"
+set (HEADER_LIST
+    ../src/api/lib_export.h
+    ../src/api/rvmcolorhelper.h
+    ../src/api/rvmparser.h
+    ../src/api/rvmprimitive.h
+    ../src/api/rvmreader.h
+    ../src/api/vector3f.h
 )
 
+set (USE_MESH_HELPER TRUE CACHE BOOL 
+     "Indicates whether it is needed to include rvmmeshhelper class in the library")
+
+if (USE_MESH_HELPER)
+  # Add OpenGL dependencies
+  set (OpenGL_GL_PREFERENCE LEGACY)
+  find_package (OpenGL REQUIRED)
+
+  list (APPEND SRC_LIST ../src/api/rvmmeshhelper.cpp)
+  list (APPEND HEADER_LIST ../src/api/rvmmeshhelper.h)
+
+endif()
+
+add_library (${PROJECT_NAME} SHARED "${SRC_LIST}")
+
+set_target_properties (${PROJECT_NAME} PROPERTIES PUBLIC_HEADER "${HEADER_LIST}")
+
+
 install(TARGETS ${PROJECT_NAME}
         CONFIGURATIONS Release
         RUNTIME DESTINATION bin