使用Visual Studio调试和发布的find_package [英] find_package for both debug and release with Visual Studio

问题描述

我想弄清楚如何在我的cmake项目中包含第三方库.目前，我正在构建Poco和其他一些软件包，它们都生成了与find_package一起使用的各自的Config.cmake.我有一个包装好的构建脚本，可以构建我的所有依赖关系，并将它们分别打包以进行调试和发布(我不想调整它们的cmake脚本，除非我真的非常需要维护，除非我真的需要这样做).

I'm tearing my hair out about how to include thrid party libraries in my cmake project. Currently I build Poco and a bunch of others that all generate their respective Config.cmake which I use with find_package. I have a wrapping build script that builds all of my dependencies and package them separately for debug and release (I don't want to tweak their cmake-scripts unless I really really really need to because maintanance).

我认为我可以做到:

find_package(Foo
            HINTS "${CMAKE_SOURCE_DIR}/some/path/debug/libFoo/lib/cmake"
            REQUIRED
)
get_target_property(LIB_FOO_DEBUG lib_foo LOCATION)

find_package(Foo
            HINTS "${CMAKE_SOURCE_DIR}/some/path/release/libFoo/lib/cmake"
            REQUIRED
)
get_target_property(LIB_FOO_RELEASE lib_foo LOCATION)

set(LIB_FOO_LIBRARIES optimized "${LIB_FOO_RELEASE}" debug "${LIB_FOO_DEBUG}")

message("LIB_FOO_LIBRARIES: \"${LIB_FOO_LIBRARIES}\"")

此产量:LIB_FOO_LIBRARIES: "optimized;C:/path/to/proj/some/path/debug/libFoo/lib/foo.lib;debug;C:/path/to/proj/some/path/debug/libFoo/lib/foo.lib"

似乎不希望第一次对目标Foo的find_package调用进行缓存.

It seems like the first call to find_package for target Foo is cached, whis I don't really want.

我会以错误的方式处理吗?如何通过Visual Studio生成器正确使用第三方库?

Am I going about this the wrong way? How do I properly work with third party libraries with the Visual Studio generator?

任何指针都将不胜感激.

Any pointers are greatly appreciated.

推荐答案

目标Foo对find_package的第一次调用已被缓存

the first call to find_package for target Foo is cached

是的.因此，您不能两次发出find_package并获得不同的结果(除非第一次呼叫失败).

Yes. So you cannot issue find_package twice and get different results (unless the first call failed).

这是第三方程序包，它负责multiconfig-usage，即应正确编写*Config.cmake/Find*.cmake文件. (例如，FindBoost.cmake支持多配置用法).

It is third-party package who is responsible for multiconfig-usage, that is it should have properly written *Config.cmake/Find*.cmake file. (E.g., FindBoost.cmake support multi-config usage).

否则，您应该为使用multiconfig方式使用软件包做一些技巧.

Otherwise, you should do some tricks for use package in multiconfig manner.

例如，如果您猜测配置之间的唯一区别是路径中的debug/release子字符串，则可以调用find_package()进行调试安装，然后使用string(REPLACE)来获取特定于发行版的路径:

E.g., if you guess that only difference between configurations is debug/release substrings in paths, you can call find_package() for debug installation, then use string(REPLACE) for get release-specific paths:

find_package(Foo
        HINTS "${CMAKE_SOURCE_DIR}/some/path/debug/libFoo/lib/cmake"
        REQUIRED
)

get_target_property(LIB_FOO_DEBUG lib_foo LOCATION)
string(REPLACE debug release LIB_FOO_RELEASE ${LIB_FOO_DEBUG})

# Use generator expressions, so variable can be used not only by target_link_libraries.
set(LIB_FOO_LIBRARIES
        "$<$<NOT:$<CONFIG:DEBUG>>:${LIB_FOO_RELEASE}>"
        "$<$<CONFIG:DEBUG>:${LIB_FOO_DEBUG}>"
)

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