# Allow the source files to find headers in src/
include_directories(${PROJECT_SOURCE_DIR}/src)

if (DEFINED BENCHMARK_CXX_LINKER_FLAGS)
  list(APPEND CMAKE_SHARED_LINKER_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS})
  list(APPEND CMAKE_MODULE_LINKER_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS})
endif()

file(GLOB
  SOURCE_FILES
    *.cc
    ${PROJECT_SOURCE_DIR}/include/benchmark/*.h
    ${JSON_INCLUDE_DIR}/*.hpp
    ${CMAKE_CURRENT_SOURCE_DIR}/*.h)

add_library(benchmark ${SOURCE_FILES})
set_target_properties(benchmark PROPERTIES
  OUTPUT_NAME "benchmark"
  VERSION ${GENERIC_LIB_VERSION}
  SOVERSION ${GENERIC_LIB_SOVERSION}
)
target_include_directories(benchmark PUBLIC
    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>
    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../third_party/json/src>
    )

# Link threads.
target_link_libraries(benchmark  ${BENCHMARK_CXX_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
find_library(LIBRT rt)
if(LIBRT)
  target_link_libraries(benchmark ${LIBRT})
endif()

# We need extra libraries on Windows
if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
  target_link_libraries(benchmark shlwapi)
endif()

set(include_install_dir "include")
set(lib_install_dir "lib/")
set(bin_install_dir "bin/")
set(config_install_dir "lib/cmake/${PROJECT_NAME}")
set(pkgconfig_install_dir "lib/pkgconfig")

set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")

set(version_config "${generated_dir}/${PROJECT_NAME}ConfigVersion.cmake")
set(project_config "${generated_dir}/${PROJECT_NAME}Config.cmake")
set(pkg_config "${generated_dir}/${PROJECT_NAME}.pc")
set(targets_export_name "${PROJECT_NAME}Targets")

set(namespace "${PROJECT_NAME}::")

include(CMakePackageConfigHelpers)
write_basic_package_version_file(
    "${version_config}" VERSION ${GIT_VERSION} COMPATIBILITY SameMajorVersion
)

configure_file("${PROJECT_SOURCE_DIR}/cmake/Config.cmake.in" "${project_config}" @ONLY)
configure_file("${PROJECT_SOURCE_DIR}/cmake/benchmark.pc.in" "${pkg_config}" @ONLY)

if (BENCHMARK_ENABLE_INSTALL)
  # Install target (will install the library to specified CMAKE_INSTALL_PREFIX variable)
  install(
    TARGETS benchmark
    EXPORT ${targets_export_name}
    ARCHIVE DESTINATION ${lib_install_dir}
    LIBRARY DESTINATION ${lib_install_dir}
    RUNTIME DESTINATION ${bin_install_dir}
    INCLUDES DESTINATION ${include_install_dir})

  install(
    DIRECTORY "${PROJECT_SOURCE_DIR}/include/benchmark"
    DESTINATION ${include_install_dir}
    FILES_MATCHING PATTERN "*.*h")
  install(
    FILES "${JSON_INCLUDE_DIR}/json.hpp"
    DESTINATION ${include_install_dir}/benchmark)

  install(
      FILES "${project_config}" "${version_config}"
      DESTINATION "${config_install_dir}")

  install(
      FILES "${pkg_config}"
      DESTINATION "${pkgconfig_install_dir}")

  install(
      EXPORT "${targets_export_name}"
      NAMESPACE "${namespace}"
      DESTINATION "${config_install_dir}")
endif()