find_package(PkgConfig)
pkg_check_modules(PC_ZLIB  zlib)

find_path(ZLIB_INCLUDE_DIRS
    NAMES zlib.h
    HINTS ${PC_ZLIB_INCLUDEDIR}
    ${PC_ZLIB_INCLUDE_DIRS}
)

find_library(ZLIB_LIBRARIES
    NAMES z
    HINTS ${PC_ZLIB_LIBDIR}
    ${PC_ZLIB_LIBRARY_DIRS}
)

#message("ZLIB_LIBRARIES=${ZLIB_LIBRARIES} ZLIB_INCLUDE_DIRS=${ZLIB_INCLUDE_DIRS} PC_ZLIB_VERSION=${PC_ZLIB_VERSION}")
if(ZLIB_INCLUDE_DIRS AND ZLIB_LIBRARIES)
    set(ZLIB_FOUND TRUE)
    set(ZLIB_LIBRARY ${ZLIB_LIBRARIES})
    set(ZLIB_INCLUDE_DIR ${ZLIB_INCLUDE_DIRS})
    set(ZLIB_VERSION ${PC_ZLIB_VERSION})
endif()

include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(zlib FOUND_VAR ZLIB_FOUND VERSION_VAR ZLIB_VERSION 
	REQUIRED_VARS ZLIB_INCLUDE_DIRS ZLIB_INCLUDE_DIR ZLIB_LIBRARIES ZLIB_LIBRARY)

mark_as_advanced(ZLIB_LIBRARIES ZLIB_LIBRARY ZLIB_INCLUDE_DIRS ZLIB_INCLUDE_DIR ZLIB_FOUND ZLIB_VERSION)