Fixing up Windows build.

src/graphics/CMakeLists.txt

@@ -1,18 +1,9 @@
-list(APPEND graphics_LIB_INCLUDES 
-    DrawingContext.cpp
-    DrawingManager.cpp
-    DrawingSurface.cpp
-    opengl/OpenGlInterface.cpp
-    cairo/CairoInterface.cpp
-    cairo/CairoDrawingSurface.cpp
-    cairo/CairoDrawingContext.cpp)
-    
-list(APPEND graphics_HEADERS 
-    opengl/OpenGlInterface.h
-    cairo/CairoInterface.h
-    INativeDrawingSurface.h
-    INativeDrawingContext.h)
+set(platform_LIB_INCLUDES "")
+set(platform_INCLUDE_DIRS "")
+set(platform_HEADERS "")
+set(platform_LIBS "")
 
+if (UNIX)
 find_package(PkgConfig)
 PKG_CHECK_MODULES(PC_CAIRO cairo)
 FIND_PATH(CAIRO_INCLUDE_DIRS
@@ -27,13 +18,48 @@ FIND_LIBRARY(CAIRO_LIBRARIES
     HINTS ${PC_CAIRO_LIBDIR}
           ${PC_CAIRO_LIBRARY_DIRS}
 )
+list(APPEND platform_LIB_INCLUDES
+    cairo/CairoInterface.cpp
+    cairo/CairoDrawingSurface.cpp
+    cairo/CairoDrawingContext.cpp
+)
+list(APPEND platform_INCLUDE_DIRS
+    ${CAIRO_INCLUDE_DIRS}
+)
+list(APPEND platform_HEADERS
+    cairo/CairoInterface.h
+)
+list(APPEND platform_LIBS
+    ${CAIRO_LIBRARIES}
+	GL
+)
+else()
+list(APPEND platform_LIBS
+	OpenGL32.lib
+)
+endif()
+
+list(APPEND graphics_LIB_INCLUDES 
+    DrawingContext.cpp
+    DrawingManager.cpp
+    DrawingSurface.cpp
+    opengl/OpenGlInterface.cpp
+	${platform_LIB_INCLUDES}
+)
+    
+list(APPEND graphics_HEADERS 
+    opengl/OpenGlInterface.h
+    ${platform_HEADERS}
+    INativeDrawingSurface.h
+    INativeDrawingContext.h)
+
 
 add_library(graphics SHARED 
     ${graphics_LIB_INCLUDES} 
     ${graphics_HEADERS})
     
 target_include_directories(graphics PUBLIC
-                          ${CAIRO_INCLUDE_DIRS}
+                          ${platform_INCLUDE_DIRS}
                           "${CMAKE_CURRENT_SOURCE_DIR}"
                           "${CMAKE_CURRENT_SOURCE_DIR}/cairo"
                           "${CMAKE_CURRENT_SOURCE_DIR}/opengl"
@@ -41,6 +67,7 @@ target_include_directories(graphics PUBLIC
                           "${PROJECT_SOURCE_DIR}/src/visual_elements/"
                           )
                           
-target_link_libraries(graphics PUBLIC visual_elements GL ${CAIRO_LIBRARIES})
+target_link_libraries(graphics PUBLIC visual_elements ${platform_LIBS})
 
-set_property(TARGET graphics PROPERTY FOLDER src)
+set_property(TARGET graphics PROPERTY FOLDER src)
+set_target_properties( graphics PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS ON )