message: cmake: disable pkg-config for Apple frameworks
diff: @@ -519,7 +519,9 @@ endif(WIN32 AND NOT MINGW)
  # CHECK FOR SYSTEM LIBRARIES, OPTIONS, ETC..
  # ----------------------------------------------------------------------------
  if(UNIX)
  + if(NOT APPLE_FRAMEWORK)
  find_package(PkgConfig QUIET)
  + endif()
  include(CheckFunctionExists)
  include(CheckIncludeFile)
  