cmake: Exclude vulkan directory.

cmake/CMakeLists.txt

 # Boilerplate.
 cmake_minimum_required (VERSION 3.1)   # First version with CMAKE_CXX_STANDARD.
 project (skimake)
 set (CMAKE_CXX_STANDARD 11)
 
 # Default to Release mode.  We're mainly targeting Skia users, not Skia developers.
 if (NOT CMAKE_BUILD_TYPE)
     set (CMAKE_BUILD_TYPE Release)
 endif ()
 
@@ skipping 39 matching lines @@
              ../src/fonts/SkFontMgr_fontconfig.cpp
              ../src/ports/SkFontConfigInterface_direct.cpp
              ../src/ports/SkFontConfigInterface_direct_factory.cpp
              ../src/ports/SkFontConfigInterface_direct_google3.cpp
              ../src/ports/SkFontConfigInterface_direct_google3_factory.cpp)
 # Alternative font managers.
 remove_srcs (../src/ports/SkFontMgr_custom*.cpp)
 
 # Skia sure ships a lot of code no one uses.
 remove_srcs (../src/animator/* ../src/*nacl* ../src/svg/* ../src/views/* ../src/xml/*)
-foreach (include animator svg svg/parser views xml)
+foreach (include animator svg svg/parser views xml gpu/vk)
   file (GLOB globed_include ../include/${include})
   list (REMOVE_ITEM public_includes ${globed_include})
 endforeach()
 
 # Remove OS-specific source files.
 if (NOT UNIX)
     remove_srcs(../src/ports/*_posix.cpp
                 ../src/ports/SkTLS_pthread.cpp
                 ../src/ports/SkTime_Unix.cpp
                 ../src/utils/SkThreadUtils_pthread.cpp)
@@ skipping 251 matching lines @@
         file (APPEND ${skia_h_path} "#include \"${filename_component}\"\n")
       endif ()
     endforeach()
   endif()
 endforeach()
 file(APPEND ${skia_h_path} "\n#endif  // skia_DEFINED\n")
 
 # Now build a simple example app that uses Skia via libskia.so.
 add_executable(example example.cpp)
 target_link_libraries(example skia ${OPENGL_LIBRARIES})