message(STATUS "Building CMake Generator for Corrosion - This may take a while")

set(generator_src "${CMAKE_CURRENT_BINARY_DIR}/legacy_generator_src")

set(generator_destination "${CMAKE_CURRENT_BINARY_DIR}/legacy_generator")

set(generator_build_quiet "")

file(MAKE_DIRECTORY "${generator_src}")

file(COPY src DESTINATION "${generator_src}")

if(Rust_VERSION VERSION_LESS "1.56")

    message(STATUS "Corrosion Generator: Using Compatibility lock file, due to rust version less than 1.56")

    file(COPY Compat.Cargo.lock Compat.Cargo.toml DESTINATION "${generator_src}")

    file(RENAME "${generator_src}/Compat.Cargo.lock" "${generator_src}/Cargo.lock")

    file(RENAME "${generator_src}/Compat.Cargo.toml" "${generator_src}/Cargo.toml")

else()

    file(COPY Cargo.lock Cargo.toml DESTINATION "${generator_src}")

endif()

# Using cargo install has the advantage of caching the build in the user .cargo directory,

# so likely the rebuild will be very cheap even after deleting the build directory.

execute_process(

        COMMAND ${CMAKE_COMMAND}

        -E env

        # If the Generator is built at configure of a project (instead of being pre-installed)

        # We don't want environment variables like `RUSTFLAGS` affecting the Generator build.

        --unset=RUSTFLAGS

        "CARGO_BUILD_RUSTC=${RUSTC_EXECUTABLE}"

        "${CARGO_EXECUTABLE}" install

        --path "."

        --root "${generator_destination}"

        --locked

        ${_CORROSION_QUIET_OUTPUT_FLAG}

        WORKING_DIRECTORY "${generator_src}"

        RESULT_VARIABLE generator_build_failed

)

if(generator_build_failed)

    message(FATAL_ERROR "Building CMake Generator for Corrosion - failed")

else()

    message(STATUS "Building CMake Generator for Corrosion - done")

endif()

set(host_executable_suffix "")

if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")

    set(host_executable_suffix ".exe")

endif()

set(_CORROSION_GENERATOR_EXE

        "${generator_destination}/bin/corrosion-generator${host_executable_suffix}"

)

add_executable(Corrosion::Generator IMPORTED GLOBAL)

set_property(

        TARGET Corrosion::Generator

        PROPERTY IMPORTED_LOCATION "${_CORROSION_GENERATOR_EXE}")

if (CORROSION_DEV_MODE)

    # If you're developing Corrosion, you want to make sure to re-configure whenever the

    # generator changes.

    file(GLOB_RECURSE _RUST_FILES CONFIGURE_DEPENDS generator/src/*.rs)

    file(GLOB _CARGO_FILES CONFIGURE_DEPENDS generator/Cargo.*)

    set_property(

            DIRECTORY APPEND

            PROPERTY CMAKE_CONFIGURE_DEPENDS

            ${_RUST_FILES} ${_CARGO_FILES})

endif()