Add more CMake-related support for building g3dlib, zlib, bzip2, ace on Windows

--HG--
branch : trunk

externals/g3dlite/CMakeLists.txt

@@ -1,12 +1,37 @@
+# Copyright (C) 2008-2010 Trinity <http://www.trinitycore.org/>
+#
+# This file is free software; as a special exception the author gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
 file(GLOB sources *.cpp)
 
-SET(g3dlib_STAT_SRCS
+set(g3dlib_STAT_SRCS
   ${sources}
+)
+if(WIN32)
+  include_directories(
+    ${CMAKE_CURRENT_SOURCE_DIR}
+    ${CMAKE_SOURCE_DIR}/externals/zlib
   )
-
-include_directories(
-  ${CMAKE_CURRENT_SOURCE_DIR}
+else()
+  include_directories(
+    ${CMAKE_CURRENT_SOURCE_DIR}
   )
+endif()
 
 add_library(g3dlib STATIC ${g3dlib_STAT_SRCS})
-target_link_libraries(g3dlib zlib)
+
+if(WIN32)
+  target_link_libraries(g3dlib
+    zlib
+  )
+else()
+  target_link_libraries(g3dlib
+    ${ZLIB_LIBRARIES}
+  )
+endif()