c++ - CMake - 安装第三方 dll 依赖项

Question

我正在使用具有多个 DLL 的预编译第三方库(一个用于实际的第三方，还有一些作为其自身的依赖项)我的目录结构如下

MyApp
    CMakeLists.txt // Root CMake file
    src
        MyCode.cpp
    thirdpartydep // Precompiled thirdparty dependency
        FindThirdPartyDep.cmake
        bin/
            thirdparty.dll
            thirdparty_dep1.dll
            thirdparty_dep2.dll
        include/
            thirdparty.h
        lib/
            thirdparty.lib // this is the importlibrary that loads thirdparty.dll

到目前为止，我们一直在使用 copy_if_different 复制 thirdpartydep/bin 目录中的所有 DLL，并手动列出 DLL 的路径。我正在尝试正确设置 install 目标以将 thirdpartydep/bin 中的 dll 复制到 CMAKE_INSTALL_PREFIX/bin 但我不知道了解如何告诉 cmake 关于属于 thirdpartydep 的额外二进制文件。

Answer 1

如果您使用现代 CMake 并正确构建 CONFIG 第三方包 (* -config.cmake) 而不是 MODULES (Find*.cmake)，那么这将起作用:

MACRO(INSTALL_ADD_IMPORTED_DLLS target_list target_component destination_folder)
  foreach(one_trg ${target_list})
    get_target_property(one_trg_type ${one_trg} TYPE)
    if (NOT one_trg_type STREQUAL "INTERFACE_LIBRARY")
       get_target_property(one_trg_dll_location ${one_trg} IMPORTED_LOCATION_RELEASE)
       if( one_trg_dll_location MATCHES ".dll$")
          install(FILES ${one_trg_dll_location} DESTINATION ${destination_folder} CONFIGURATIONS Release COMPONENT ${target_component})
       endif()
       get_target_property(one_trg_dll_location ${one_trg} IMPORTED_LOCATION_DEBUG)
       if( one_trg_dll_location MATCHES ".dll$")
          install(FILES ${one_trg_dll_location} DESTINATION ${destination_folder} CONFIGURATIONS Debug COMPONENT ${target_component})
       endif()
    endif()
  endforeach()
ENDMACRO()

它是这样使用的:

set(THIRDPARTY_TARGETS "example_target1 example_target2 opencv_core")
if(MSVC)
    INSTALL_ADD_IMPORTED_DLLS("${THIRDPARTY_TARGETS}" bin bin)
endif()