cmake_minimum_required(VERSION 3.5...4.20)

project(boost_dll VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)

option(BOOST_DLL_USE_STD_FS "Use std::filesystem instead of Boost.Filesystem" OFF)

add_library(boost_dll_base INTERFACE)

add_library(Boost::dll_base ALIAS boost_dll_base)

target_include_directories(boost_dll_base INTERFACE include)

target_link_libraries(boost_dll_base

INTERFACE

Boost::assert

Boost::config

Boost::core

Boost::predef

Boost::system

Boost::throw_exception

Boost::type_index

Boost::winapi

${CMAKE_DL_LIBS}

)

add_library(boost_dll_std_fs INTERFACE)

add_library(Boost::dll_std_fs ALIAS boost_dll_std_fs)

target_include_directories(boost_dll_std_fs INTERFACE include)

target_link_libraries(boost_dll_std_fs INTERFACE Boost::dll_base)

target_compile_definitions(boost_dll_std_fs INTERFACE BOOST_DLL_USE_STD_FS)

target_compile_features(boost_dll_std_fs INTERFACE cxx_std_17)

add_library(boost_dll_boost_fs INTERFACE)

add_library(Boost::dll_boost_fs ALIAS boost_dll_boost_fs)

target_include_directories(boost_dll_boost_fs INTERFACE include)

target_link_libraries(boost_dll_boost_fs

INTERFACE

Boost::dll_base # Internal dependency

Boost::filesystem

)

if (BOOST_USE_MODULES)

add_library(boost_dll)

target_compile_definitions(boost_dll PUBLIC BOOST_USE_MODULES)

get_property(__standard TARGET boost_dll PROPERTY CXX_STANDARD)

if (__standard IN_LIST CMAKE_CXX_COMPILER_IMPORT_STD AND CMAKE_CXX_MODULE_STD)

target_compile_features(boost_dll PUBLIC cxx_std_23)

target_compile_definitions(boost_dll PRIVATE BOOST_DLL_USE_STD_MODULE)

message(STATUS "Using `import std;`")

else()

target_compile_features(boost_dll PUBLIC cxx_std_20)

message(STATUS "`import std;` is not available")

endif()

unset(__standard)

target_sources(boost_dll

PUBLIC

FILE_SET CXX_MODULES

BASE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/modules

FILES ${CMAKE_CURRENT_SOURCE_DIR}/modules/boost_dll.cppm

)

set(__scope PUBLIC)

else()

add_library(boost_dll INTERFACE)

set(__scope INTERFACE)

endif()

add_library(Boost::dll ALIAS boost_dll)

target_include_directories(boost_dll ${__scope} include)

if (BOOST_DLL_USE_STD_FS)

target_link_libraries(boost_dll ${__scope} Boost::dll_std_fs)

else()

target_link_libraries(boost_dll ${__scope} Boost::dll_boost_fs)

endif()

unset(__scope)

if (BOOST_SUPERPROJECT_VERSION AND NOT CMAKE_VERSION VERSION_LESS 3.13)

boost_install(

TARGETS

boost_dll

boost_dll_base

boost_dll_std_fs

boost_dll_boost_fs

VERSION

"${BOOST_SUPERPROJECT_VERSION}"

HEADER_DIRECTORY

include

)

endif()

if(BUILD_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/test/CMakeLists.txt")

add_subdirectory(test)

endif()