# ==============================================================================
# Sources related to the benchmarking options
# ==============================================================================

target_sources(${PROJECT_NAME}
    PRIVATE
        # TODO: find out why we need to add the header files here, so that they can find the <benchmark/benchmark.h> and <gtest/gtest.h> files
        include/anira/benchmark/ProcessBlockFixture.h
        src/benchmark/ProcessBlockFixture.cpp
)

# This disables the default behavior of adding all targets to the CTest dashboard.
set_property(GLOBAL PROPERTY CTEST_TARGETS_ADDED 1)

include(FetchContent)

FetchContent_Declare(benchmark
    GIT_REPOSITORY https://github.com/google/benchmark.git
    GIT_PROGRESS TRUE
    GIT_SHALLOW TRUE
    GIT_TAG v1.8.3)

# For benchmark we want to set the BENCMARK_ENABLE_TESTING to OFF therefore we cannot use FetchContent_MakeAvailable()
# Check if population has already been performed
FetchContent_GetProperties(benchmark)
if(NOT benchmark_POPULATED)
    # Fetch the content using previously declared details
    FetchContent_Populate(benchmark)

    # Set custom variables, policies, etc.
    set(BENCHMARK_ENABLE_TESTING OFF)
    set(BENCHMARK_ENABLE_GTEST_TESTS OFF)

    if (APPLE AND (CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64"))
    set(HAVE_STD_REGEX ON)
    set(RUN_HAVE_STD_REGEX 1)
    endif()

    # Bring the populated content into the build
    add_subdirectory(${benchmark_SOURCE_DIR} ${benchmark_BINARY_DIR})

    # Supress warnings by making include directories system directories
    get_property(BENCHMARK_INCLUDE_DIRS TARGET benchmark PROPERTY INTERFACE_INCLUDE_DIRECTORIES)
    target_include_directories(benchmark SYSTEM INTERFACE ${BENCHMARK_INCLUDE_DIRS})
endif()

# enable position independent code because otherwise the library cannot be linked into a shared library
set_target_properties(benchmark PROPERTIES POSITION_INDEPENDENT_CODE ON)
target_link_libraries(${PROJECT_NAME} PUBLIC benchmark)