-find_package(PkgConfig QUIET)
-pkg_check_modules(PC_OGG QUIET ogg)
-find_path(OGG_INCLUDE_DIRS NAMES ogg/ogg.h HINTS ${PC_OGG_INCLUDE_DIRS} PATH_SUFFIXES ogg)
-find_library(OGG_LIBRARIES NAMES ogg HINTS ${PC_OGG_LIBRARY_DIRS})
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(OGG DEFAULT_MSG OGG_INCLUDE_DIRS OGG_LIBRARIES)