CMake/win: Fix linker issue with OCIO

In certain CMake configurations it was possible
that OCIO gave linker errors due to it thinking
it was using the shared library rather than the
static library we ship.

build_files/cmake/platform/platform_win32.cmake

@@ -550,7 +550,6 @@ if(WITH_OPENIMAGEIO)
   set(OPENIMAGEIO_LIBRARIES ${OIIO_OPTIMIZED} ${OIIO_DEBUG})
 
   set(OPENIMAGEIO_DEFINITIONS "-DUSE_TBB=0")
-  set(OPENCOLORIO_DEFINITIONS "-DDOpenColorIO_SKIP_IMPORTS")
   set(OPENIMAGEIO_IDIFF "${OPENIMAGEIO}/bin/idiff.exe")
   add_definitions(-DOIIO_STATIC_DEFINE)
   add_definitions(-DOIIO_NO_SSE=1)
@@ -596,7 +595,7 @@ if(WITH_OPENCOLORIO)
     debug ${OPENCOLORIO_LIBPATH}/libexpatdMD.lib
     debug ${OPENCOLORIO_LIBPATH}/pystring_d.lib
   )
-  set(OPENCOLORIO_DEFINITIONS)
+  set(OPENCOLORIO_DEFINITIONS "-DOpenColorIO_SKIP_IMPORTS")
 endif()
 
 if(WITH_OPENVDB)

intern/opencolorio/CMakeLists.txt

@@ -48,6 +48,7 @@ if(WITH_OPENCOLORIO)
   )
 
   add_definitions(${GL_DEFINITIONS})
+  add_definitions(${OPENCOLORIO_DEFINITIONS})
 
   list(APPEND INC_SYS
     ${OPENCOLORIO_INCLUDE_DIRS}
@@ -67,9 +68,6 @@ if(WITH_OPENCOLORIO)
     list(APPEND INC_SYS
       ${BOOST_INCLUDE_DIR}
     )
-    add_definitions(
-      -DOpenColorIO_STATIC
-    )
     list(APPEND LIB
       ${BOOST_LIBRARIES}
     )