set(ANDROID_CPP_FEATURES "rtti exceptions" CACHE STRING "")
set(CMAKE_SYSTEM_NAME Android CACHE STRING "")
set(ANDROID_TOOLCHAIN clang CACHE STRING "")
set(ANDROID_NATIVE_API_LEVEL ${CMAKE_SYSTEM_VERSION} CACHE STRING "")
if(CMAKE_SYSTEM_VERSION MATCHES "^[0-9]+$")
    set(ANDROID_PLATFORM android-${CMAKE_SYSTEM_VERSION} CACHE STRING "")
else()
    set(ANDROID_PLATFORM ${CMAKE_SYSTEM_VERSION} CACHE STRING "")
endif()
set(CMAKE_ANDROID_NDK_TOOLCHAIN_VERSION clang CACHE STRING "")

if (VCPKG_TARGET_TRIPLET MATCHES "arm64-android")
    set(ANDROID_ABI arm64-v8a CACHE STRING "")
elseif(VCPKG_TARGET_TRIPLET MATCHES "armv6-android")
    set(ANDROID_ABI armeabi CACHE STRING "")
    set(ANDROID_ARM_MODE arm CACHE STRING "")
elseif(VCPKG_TARGET_TRIPLET MATCHES "arm-neon-android")
    set(ANDROID_ABI armeabi-v7a CACHE STRING "")
    set(ANDROID_ARM_NEON ON CACHE BOOL "")
elseif(VCPKG_TARGET_TRIPLET MATCHES "arm-android")
    set(ANDROID_ABI armeabi-v7a CACHE STRING "")
    set(ANDROID_ARM_NEON OFF CACHE BOOL "")
elseif(VCPKG_TARGET_TRIPLET MATCHES "x64-android")
    set(ANDROID_ABI x86_64 CACHE STRING "")
elseif(VCPKG_TARGET_TRIPLET MATCHES "x86-android")
    set(ANDROID_ABI x86 CACHE STRING "")
else()
    message(FATAL_ERROR "Unknown ABI for target triplet ${VCPKG_TARGET_TRIPLET}")
endif()

if (VCPKG_CRT_LINKAGE STREQUAL "dynamic")
    set(ANDROID_STL c++_shared CACHE STRING "")
else()
    set(ANDROID_STL c++_static CACHE STRING "")
endif()

if(DEFINED ENV{ANDROID_NDK_HOME})
    set(ANDROID_NDK_HOME $ENV{ANDROID_NDK_HOME})
else()
    set(ANDROID_NDK_HOME "$ENV{ProgramData}/Microsoft/AndroidNDK64/android-ndk-r13b/")
    if(NOT EXISTS "${ANDROID_NDK_HOME}")
        # Use Xamarin default installation folder
        set(ANDROID_NDK_HOME "$ENV{ProgramFiles\(x86\)}/Android/android-sdk/ndk-bundle")
    endif()
endif()

if(NOT EXISTS "${ANDROID_NDK_HOME}/build/cmake/android.toolchain.cmake")
    message(FATAL_ERROR "Could not find android ndk. Searched at ${ANDROID_NDK_HOME}")
endif()

include("${ANDROID_NDK_HOME}/build/cmake/android.toolchain.cmake")

if(NOT _VCPKG_ANDROID_TOOLCHAIN)
    set(_VCPKG_ANDROID_TOOLCHAIN 1)
    get_property( _CMAKE_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE )
    if(NOT _CMAKE_IN_TRY_COMPILE)
        string(APPEND CMAKE_C_FLAGS " -fPIC ${VCPKG_C_FLAGS} ")
        string(APPEND CMAKE_CXX_FLAGS " -fPIC ${VCPKG_CXX_FLAGS} ")
        string(APPEND CMAKE_C_FLAGS_DEBUG " ${VCPKG_C_FLAGS_DEBUG} ")
        string(APPEND CMAKE_CXX_FLAGS_DEBUG " ${VCPKG_CXX_FLAGS_DEBUG} ")
        string(APPEND CMAKE_C_FLAGS_RELEASE " ${VCPKG_C_FLAGS_RELEASE} ")
        string(APPEND CMAKE_CXX_FLAGS_RELEASE " ${VCPKG_CXX_FLAGS_RELEASE} ")

        string(APPEND CMAKE_SHARED_LINKER_FLAGS " ${VCPKG_LINKER_FLAGS} ")
        string(APPEND CMAKE_EXE_LINKER_FLAGS " ${VCPKG_LINKER_FLAGS} ")
        string(APPEND CMAKE_SHARED_LINKER_FLAGS_DEBUG " ${VCPKG_LINKER_FLAGS_DEBUG} ")
        string(APPEND CMAKE_EXE_LINKER_FLAGS_DEBUG " ${VCPKG_LINKER_FLAGS_DEBUG} ")
        string(APPEND CMAKE_SHARED_LINKER_FLAGS_RELEASE " ${VCPKG_LINKER_FLAGS_RELEASE} ")
        string(APPEND CMAKE_EXE_LINKER_FLAGS_RELEASE " ${VCPKG_LINKER_FLAGS_RELEASE} ")
    endif()
endif()