# SPDX-License-Identifier: GPL-2.0-or-later

set(PNG_EXTRA_ARGS
  -DZLIB_LIBRARY=${LIBDIR}/zlib/lib/${ZLIB_LIBRARY}
  -DZLIB_INCLUDE_DIR=${LIBDIR}/zlib/include/
  -DPNG_STATIC=ON
)

if(BLENDER_PLATFORM_ARM)
  set(PNG_EXTRA_ARGS ${PNG_EXTRA_ARGS} -DPNG_HARDWARE_OPTIMIZATIONS=ON -DPNG_ARM_NEON=on -DCMAKE_SYSTEM_PROCESSOR="aarch64")
endif()

ExternalProject_Add(external_png
  URL file://${PACKAGE_DIR}/${PNG_FILE}
  DOWNLOAD_DIR ${DOWNLOAD_DIR}
  URL_HASH ${PNG_HASH_TYPE}=${PNG_HASH}
  PREFIX ${BUILD_DIR}/png
  CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${LIBDIR}/png ${DEFAULT_CMAKE_FLAGS} ${PNG_EXTRA_ARGS}
  INSTALL_DIR ${LIBDIR}/png
)

add_dependencies(
  external_png
  external_zlib
)

if(WIN32 AND BUILD_MODE STREQUAL Debug)
  ExternalProject_Add_Step(external_png after_install
    COMMAND ${CMAKE_COMMAND} -E copy ${LIBDIR}/png/lib/libpng16_staticd${LIBEXT} ${LIBDIR}/png/lib/libpng16${LIBEXT}
    DEPENDEES install
  )
endif()