cmake_minimum_required(VERSION 3.10.2)
project(SkiaBuild)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

add_library(SkiaBuild SHARED empty.cpp)
add_library(SkiaBuild_Debug SHARED empty.cpp)

target_compile_definitions(SkiaBuild PUBLIC SK_GL=1 SK_RELEASE=1)
target_compile_definitions(SkiaBuild_Debug PUBLIC SK_GL=1 SK_DEBUG=1)

set(SKIA_OUT Shared)
set(SKIA_OUT_DEBUG Shared_Debug)

set(SKIA_DIR        skia) #Skia-m100-d5a507cafd-macos-${SKIA_OUT})
set(SKIA_DIR_DEBUG  skia) #Skia-m100-d5a507cafd-macos-${SKIA_OUT_DEBUG})

target_include_directories(SkiaBuild PUBLIC
    ${SKIA_DIR}
    ${SKIA_DIR}/include/android
    ${SKIA_DIR}/include/c
    ${SKIA_DIR}/include/codec
    ${SKIA_DIR}/include/config
    ${SKIA_DIR}/include/core
    ${SKIA_DIR}/include/docs
    ${SKIA_DIR}/include/effects
    ${SKIA_DIR}/include/encode
    ${SKIA_DIR}/include/gpu
    ${SKIA_DIR}/include/pathops
    ${SKIA_DIR}/include/ports
    ${SKIA_DIR}/include/private
    ${SKIA_DIR}/include/sksl
    ${SKIA_DIR}/include/svg
    ${SKIA_DIR}/include/third_party/skcms
    ${SKIA_DIR}/include/third_party/vulkan
    ${SKIA_DIR}/include/utils
    ${SKIA_DIR}/src/core
    ${SKIA_DIR}/src/c
    ${SKIA_DIR}/src/codec
    ${SKIA_DIR}/src/core
    ${SKIA_DIR}/src/effects
    ${SKIA_DIR}/src/gpu
    ${SKIA_DIR}/src/image
    ${SKIA_DIR}/src/images
    ${SKIA_DIR}/src/lazy
    ${SKIA_DIR}/src/opts
    ${SKIA_DIR}/src/pathops
    ${SKIA_DIR}/src/pdf
    ${SKIA_DIR}/src/ports
    ${SKIA_DIR}/src/sfnt
    ${SKIA_DIR}/src/shaders
    ${SKIA_DIR}/src/sksl
    ${SKIA_DIR}/src/svg
    ${SKIA_DIR}/src/utils
    ${SKIA_DIR}/src/xml
    ${SKIA_DIR}/src/xps
)

target_include_directories(SkiaBuild_Debug PUBLIC
    ${SKIA_DIR_DEBUG}
    ${SKIA_DIR_DEBUG}/include/android
    ${SKIA_DIR_DEBUG}/include/c
    ${SKIA_DIR_DEBUG}/include/codec
    ${SKIA_DIR_DEBUG}/include/config
    ${SKIA_DIR_DEBUG}/include/core
    ${SKIA_DIR_DEBUG}/include/docs
    ${SKIA_DIR_DEBUG}/include/effects
    ${SKIA_DIR_DEBUG}/include/encode
    ${SKIA_DIR_DEBUG}/include/gpu
    ${SKIA_DIR_DEBUG}/include/pathops
    ${SKIA_DIR_DEBUG}/include/ports
    ${SKIA_DIR_DEBUG}/include/private
    ${SKIA_DIR_DEBUG}/include/sksl
    ${SKIA_DIR_DEBUG}/include/svg
    ${SKIA_DIR_DEBUG}/include/third_party/skcms
    ${SKIA_DIR_DEBUG}/include/third_party/vulkan
    ${SKIA_DIR_DEBUG}/include/utils
    ${SKIA_DIR_DEBUG}/src/core
    ${SKIA_DIR_DEBUG}/src/c
    ${SKIA_DIR_DEBUG}/src/codec
    ${SKIA_DIR_DEBUG}/src/core
    ${SKIA_DIR_DEBUG}/src/effects
    ${SKIA_DIR_DEBUG}/src/gpu
    ${SKIA_DIR_DEBUG}/src/image
    ${SKIA_DIR_DEBUG}/src/images
    ${SKIA_DIR_DEBUG}/src/lazy
    ${SKIA_DIR_DEBUG}/src/opts
    ${SKIA_DIR_DEBUG}/src/pathops
    ${SKIA_DIR_DEBUG}/src/pdf
    ${SKIA_DIR_DEBUG}/src/ports
    ${SKIA_DIR_DEBUG}/src/sfnt
    ${SKIA_DIR_DEBUG}/src/shaders
    ${SKIA_DIR_DEBUG}/src/sksl
    ${SKIA_DIR_DEBUG}/src/svg
    ${SKIA_DIR_DEBUG}/src/utils
    ${SKIA_DIR_DEBUG}/src/xml
    ${SKIA_DIR_DEBUG}/src/xps
)

if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR
        CMAKE_CXX_COMPILER_ID MATCHES "GNU")
    if(APPLE)
        set(WHOLE_ARCHIVE_FLAG "-Wl,-all_load" CACHE INTERNAL "all_load flag")
        set(NO_WHOLE_ARCHIVE_FLAG "-Wl,-noall_load" CACHE INTERNAL "noall_load flag")
    else()
        set(WHOLE_ARCHIVE_FLAG "-Wl,--whole-archive" CACHE INTERNAL "whole-archive flag")
        set(NO_WHOLE_ARCHIVE_FLAG "-Wl,--no-whole-archive" CACHE INTERNAL "no-whole-archive flag")
    endif()
else()
    set(WHOLE_ARCHIVE_FLAG "")
    set(NO_WHOLE_ARCHIVE_FLAG "")
endif()

# we cannot link to static libs such as icu, skresources, dng_sdk, pathkit, ect
# attempting to do so brings undefined references

#file(GLOB SKIA_LIBS_STATIC ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR}/out/${SKIA_OUT}/*.a)
file(GLOB SKIA_WEBP_LIBS_STATIC ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR}/out/${SKIA_OUT}/libwebp*.a)
file(GLOB SKIA_LIBS_SHARED ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR}/out/${SKIA_OUT}/*.so)

target_link_libraries(
        SkiaBuild
        OpenGL_Library
        ${SKIA_LIBS_SHARED}

        ${WHOLE_ARCHIVE_FLAG}
        ${SKIA_LIBS_STATIC}

        # link to what we can
        ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR}/out/${SKIA_OUT}/libexpat.a
        ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR}/out/${SKIA_OUT}/libharfbuzz.a
        ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR}/out/${SKIA_OUT}/libjpeg.a
        ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR}/out/${SKIA_OUT}/libpiex.a
        ${SKIA_WEBP_LIBS_STATIC}

        ${NO_WHOLE_ARCHIVE_FLAG}
)

#file(GLOB SKIA_LIBS_STATIC_DEBUG ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR_DEBUG}/out/${SKIA_OUT_DEBUG}/*.a)
file(GLOB SKIA_WEBP_LIBS_STATIC_DEBUG ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR_DEBUG}/out/${SKIA_OUT_DEBUG}/libwebp*.a)
file(GLOB SKIA_LIBS_SHARED_DEBUG ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR_DEBUG}/out/${SKIA_OUT_DEBUG}/*.so)

target_link_libraries(
        SkiaBuild_Debug
        OpenGL_Library
        ${SKIA_LIBS_SHARED_DEBUG}

        ${WHOLE_ARCHIVE_FLAG}
        ${SKIA_LIBS_STATIC_DEBUG}

        # link to what we can
        ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR_DEBUG}/out/${SKIA_OUT_DEBUG}/libexpat.a
        ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR_DEBUG}/out/${SKIA_OUT_DEBUG}/libharfbuzz.a
        ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR_DEBUG}/out/${SKIA_OUT_DEBUG}/libjpeg.a
        ${CMAKE_CURRENT_SOURCE_DIR}/${SKIA_DIR_DEBUG}/out/${SKIA_OUT_DEBUG}/libpiex.a
        ${SKIA_WEBP_LIBS_STATIC_DEBUG}

        ${NO_WHOLE_ARCHIVE_FLAG}
)