mark_as_advanced(IRRLICHT_LIBRARY IRRLICHT_INCLUDE_DIR)
find_library(IRRLICHT_LIBRARY NAMES libirrlicht Irrlicht)
find_path(IRRLICHT_INCLUDE_DIR NAMES irrlicht.h PATH_SUFFIXES irrlicht)

# Major version
file(STRINGS ${IRRLICHT_INCLUDE_DIR}/IrrCompileConfig.h
    irrlicht_MAJOR_VERSION_LINE REGEX
    "^#define[ \t]+IRRLICHT_VERSION_MAJOR[ \t]+[0-9]+$")
string(REGEX REPLACE
    "^#define[ \t]+IRRLICHT_VERSION_MAJOR[ \t]+([0-9]+)$"
    "\\1" irrlicht_VERSION_MAJOR "${irrlicht_MAJOR_VERSION_LINE}")

# Minor version
file(STRINGS ${IRRLICHT_INCLUDE_DIR}/IrrCompileConfig.h
    irrlicht_MINOR_VERSION_LINE REGEX
    "^#define[ \t]+IRRLICHT_VERSION_MINOR[ \t]+[0-9]+$")
string(REGEX REPLACE
    "^#define[ \t]+IRRLICHT_VERSION_MINOR[ \t]+([0-9]+)$"
    "\\1" irrlicht_VERSION_MINOR "${irrlicht_MINOR_VERSION_LINE}")

# Patch version (revision)
file(STRINGS ${IRRLICHT_INCLUDE_DIR}/IrrCompileConfig.h
    irrlicht_REVISION_VERSION_LINE REGEX
    "^#define[ \t]+IRRLICHT_VERSION_REVISION[ \t]+[0-9]+$")
string(REGEX REPLACE
    "^#define[ \t]+IRRLICHT_VERSION_REVISION[ \t]+([0-9]+)$"
    "\\1" irrlicht_VERSION_REVISION "${irrlicht_REVISION_VERSION_LINE}")

set(Irrlicht_VERSION_STRING
    ${irrlicht_VERSION_MAJOR}.${irrlicht_VERSION_MINOR}.${irrlicht_VERSION_REVISION})

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Irrlicht
    VERSION_VAR Irrlicht_VERSION_STRING
    REQUIRED_VARS IRRLICHT_LIBRARY IRRLICHT_INCLUDE_DIR)

if(Irrlicht_FOUND)
    if(NOT TARGET Irrlicht)
        add_library(Irrlicht UNKNOWN IMPORTED)
        set_target_properties(Irrlicht PROPERTIES
            INTERFACE_INCLUDE_DIRECTORIES "${IRRLICHT_INCLUDE_DIR}"
            IMPORTED_LOCATION "${IRRLICHT_LIBRARY}")
    endif()
endif()