add_gdal_driver(
  TARGET gdal_JPEGXL
  SOURCES jpegxl.cpp
  CORE_SOURCES jpegxldrivercore.cpp
  PLUGIN_CAPABLE
  NO_SHARED_SYMBOL_WITH_CORE)

function(declare_def DEF)
    if(TARGET gdal_JPEGXL)
        target_compile_definitions(gdal_JPEGXL PRIVATE ${DEF})
    endif()
    if(TARGET gdal_JPEGXL_core)
        target_compile_definitions(gdal_JPEGXL_core PRIVATE ${DEF})
    endif()
endfunction()

cmake_push_check_state(RESET)
set(CMAKE_REQUIRED_LIBRARIES ${JXL_LIBRARIES})
check_function_exists(JxlEncoderFrameSettingsSetOption HAVE_JxlEncoderFrameSettingsSetOption)
check_function_exists(JxlEncoderFrameSettingsCreate HAVE_JxlEncoderFrameSettingsCreate)
check_function_exists(JxlEncoderSetFrameDistance HAVE_JxlEncoderSetFrameDistance)
check_function_exists(JxlEncoderSetFrameLossless HAVE_JxlEncoderSetFrameLossless)
check_function_exists(JxlEncoderSetCodestreamLevel HAVE_JxlEncoderSetCodestreamLevel)
check_function_exists(JxlEncoderInitExtraChannelInfo HAVE_JxlEncoderInitExtraChannelInfo)
check_function_exists(JxlDecoderSetDecompressBoxes HAVE_JXL_BOX_API)
check_function_exists(JxlEncoderSetExtraChannelDistance HAVE_JxlEncoderSetExtraChannelDistance)

# This function has been removed per https://github.com/libjxl/libjxl/commit/b08a704978d5aeaf6fd1e2aee3ae5907a89e1f96
# Testing its presence enables us to know if JxlDecoderGetColorAsEncodedProfile()
# and other functions have JxlPixelFormat* argument that has been removed
check_function_exists(JxlDecoderDefaultPixelFormat HAVE_JxlDecoderDefaultPixelFormat)

cmake_pop_check_state()
if (HAVE_JxlEncoderFrameSettingsSetOption)
  declare_def(-DHAVE_JxlEncoderFrameSettingsSetOption)
endif ()
if (HAVE_JxlEncoderFrameSettingsCreate)
  declare_def(-DHAVE_JxlEncoderFrameSettingsCreate)
endif ()
if (HAVE_JxlEncoderSetFrameLossless)
  declare_def(-DHAVE_JxlEncoderSetFrameLossless)
endif ()
if (HAVE_JxlEncoderSetFrameDistance)
  declare_def(-DHAVE_JxlEncoderSetFrameDistance)
endif ()
if (HAVE_JxlEncoderSetCodestreamLevel)
  declare_def(-DHAVE_JxlEncoderSetCodestreamLevel)
endif ()
if (HAVE_JxlEncoderInitExtraChannelInfo)
  declare_def(-DHAVE_JxlEncoderInitExtraChannelInfo)
endif ()
if (HAVE_JXL_BOX_API)
  declare_def(-DHAVE_JXL_BOX_API)
else()
  message(WARNING "This version of libjxl lacks the box API used for EXIF, XMP and georeferencing support. Consider using libjxl from its main branch, post 0.6.1 release.")
endif ()
if (HAVE_JxlEncoderSetExtraChannelDistance)
  declare_def(-DHAVE_JxlEncoderSetExtraChannelDistance)
endif ()
if (HAVE_JxlDecoderDefaultPixelFormat)
  declare_def(-DHAVE_JxlDecoderDefaultPixelFormat)
endif()

if(NOT TARGET gdal_JPEGXL)
    return()
endif()

gdal_standard_includes(gdal_JPEGXL)
gdal_target_link_libraries(gdal_JPEGXL PRIVATE JXL::JXL)

if (GDAL_USE_JXL_THREADS)
  gdal_target_link_libraries(gdal_JPEGXL PRIVATE JXL_THREADS::JXL_THREADS)
  declare_def(-DHAVE_JXL_THREADS)
endif ()