include(ExternalProject)
include(GNUInstallDirs)

set(ABSL_PROJECT absl)
set(ABSL_TAR_URL https://github.com/Oneflow-Inc/abseil-cpp/archive/d0.tar.gz)
use_mirror(VARIABLE ABSL_TAR_URL URL ${ABSL_TAR_URL})
set(ABSL_SOURCE_DIR ${CMAKE_CURRENT_BINARY_DIR}/absl/src/absl)
set(ABSL_INSTALL ${THIRD_PARTY_DIR}/absl)

set(ABSL_INCLUDE_DIR ${THIRD_PARTY_DIR}/absl/include CACHE PATH "" FORCE)
set(ABSL_LIBRARY_DIR ${THIRD_PARTY_DIR}/absl/${CMAKE_INSTALL_LIBDIR} CACHE PATH "" FORCE)

if(WIN32)
  set(ABSL_BUILD_LIBRARY_DIR ${ABSL_INSTALL}/${CMAKE_INSTALL_LIBDIR})
  set(ABSL_LIBRARY_NAMES
      absl_spinlock_wait.lib
      absl_dynamic_annotations.lib
      absl_malloc_internal.lib
      absl_throw_delegate.lib
      absl_int128.lib
      absl_strings.lib
      absl_str_format_internal.lib
      absl_time.lib
      absl_bad_optional_access.lib
      absl_base.lib)
else()
  set(ABSL_BUILD_LIBRARY_DIR ${ABSL_INSTALL}/${CMAKE_INSTALL_LIBDIR})
  set(ABSL_LIBRARY_NAMES
      libabsl_spinlock_wait.a
      libabsl_dynamic_annotations.a
      libabsl_malloc_internal.a
      libabsl_throw_delegate.a
      libabsl_int128.a
      libabsl_strings.a
      libabsl_str_format_internal.a
      libabsl_time.a
      libabsl_bad_optional_access.a
      libabsl_base.a)
endif()

foreach(LIBRARY_NAME ${ABSL_LIBRARY_NAMES})
  list(APPEND ABSL_STATIC_LIBRARIES ${ABSL_LIBRARY_DIR}/${LIBRARY_NAME})
  list(APPEND ABSL_BUILD_STATIC_LIBRARIES ${ABSL_BUILD_LIBRARY_DIR}/${LIBRARY_NAME})
endforeach()

if(THIRD_PARTY)
  ExternalProject_Add(
    ${ABSL_PROJECT}
    PREFIX absl
    URL ${ABSL_TAR_URL}
    URL_MD5 20126998c9b17e5f7a93711972f03f79
    UPDATE_COMMAND ""
    BUILD_BYPRODUCTS ${ABSL_STATIC_LIBRARIES}
    CMAKE_CACHE_ARGS
      -DCMAKE_C_COMPILER_LAUNCHER:STRING=${CMAKE_C_COMPILER_LAUNCHER}
      -DCMAKE_CXX_COMPILER_LAUNCHER:STRING=${CMAKE_CXX_COMPILER_LAUNCHER}
      -DCMAKE_INSTALL_PREFIX:PATH=${ABSL_INSTALL}
      -DCMAKE_INSTALL_LIBDIR:PATH=${ABSL_INSTALL}/${CMAKE_INSTALL_LIBDIR}
      -DCMAKE_INSTALL_MESSAGE:STRING=${CMAKE_INSTALL_MESSAGE}
      -DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=ON
      -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE})
endif(THIRD_PARTY)
