support installing .cmake and pkgconfig/.pc files for targets #1268

xq114 · 2021-03-06T14:18:39Z

你在什么场景下需要该功能？

使用xmake编写的库，希望其他原来使用cmake的项目也可以不做太多改动的情况下使用

描述可能的解决方案

add_rules("utils.export.cmake_import_files")

效果为install时在include、lib等文件夹外并列放一个cmake文件夹，文件夹里面放fooConfig.cmake等并通过相对路径标明此target的include/lib/syslink等信息

描述你认为的候选方案

xmake project -k cmake_import_files

缺点是不好指定特定的target，install的时候不能保证相对路径的正确

The text was updated successfully, but these errors were encountered:

waruqi · 2021-03-06T14:34:47Z

可以用 rule ，名字改下：

add_rules("utils.install.cmake_importfiles")

也可以导出 pkg-config pc files

add_rules("utils.install.pkgconfig_importfiles")

waruqi · 2021-03-22T12:37:56Z

cmake 的还没弄，我先把 pkgconfig 的加上了。。只需要添加 add_rules("utils.install.pkgconfig_importfiles") 规则。

target("test")
    set_kind("static")
    add_files("src/*.cpp")
    add_rules("utils.install.pkgconfig_importfiles")

$ xmake install -o /tmp/install
$ tree /tmp/install/
/tmp/install/├── include
└── lib
    ├── libtest.a
    └── pkgconfig
        └── test.pc

test.pc

prefix=/tmp/install
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: test
Libs: -L/tmp/install/lib -L${libdir} -ltest
Libs.private:
Cflags: -I/tmp/install/include -I${includedir}

我们也可以不用内置的规则，自己通过 after_install 定制化一些安装参数

target("test")
    set_kind("static")
    add_files("src/*.cpp")
    after_install(function (target, opt))
        import("target.action.install.pkgconfig_importfiles")(target, 
            {includedirs = {"xxx"}, linkdirs = ..., links ..., filename = "xxxx.pc"})
    end

waruqi · 2021-03-23T02:33:01Z

cmake 的我也加上了，不过没有详测过是否完全生效，你可以试试 @xq114

set_project("test")
target("test")
    set_kind("static")
    add_files("src/*.cpp")
    add_rules("utils.install.cmake_importfiles")

对应的包名规则：find_package("test::test") 。。。projectname::targetname


$ tree /tmp/install
/tmp/install
├── include
└── lib
    ├── cmake
    │   └── test
    │       ├── testConfig.cmake
    │       ├── testConfigVersion.cmake
    │       ├── testTargets-release.cmake
    │       └── testTargets.cmake
    ├── libtest.a

xq114 · 2021-03-23T03:19:19Z

一般来说这个文件是放在share/cmake或者lib/cmake下面而不是lib/cmake/test下面
cmake文件内可以用${CMAKE_CURRENT_LIST_DIR}声明相对路径，而不是使用绝对路径 https://cmake.org/cmake/help/latest/variable/CMAKE_CURRENT_LIST_DIR.html
或者参考 https://cmake.org/cmake/help/latest/guide/importing-exporting/index.html?highlight=cmake_current_list_dir
是否可提供选项去掉project::前缀，直接用find_package(<target>)？

xq114 · 2021-03-23T03:32:17Z

绝对路径导致的问题

CMake Error at C:/Users/xq114/Projects/testc/dist/lib/cmake/lodepng/lodepngTargets.cmake:45 (set):
  Syntax error in cmake code at

    C:/Users/xq114/Projects/testc/dist/lib/cmake/lodepng/lodepngTargets.cmake:45

  when parsing string

    C:\Users\xq114\Projects\testc\dist

  Invalid character escape '\U'.

waruqi · 2021-03-23T03:32:24Z

一般来说这个文件是放在share/cmake或者lib/cmake下面而不是lib/cmake/test下面
是否可提供选项去掉project::前缀，直接用find_package()？

我是参考了现有的一些包的安装，ogg, libjpeg 什么的，我看都是 project::xxxx 两级命名，并且都是放在 lib/cmake/xxx 下

add_library(libjpeg-turbo::turbojpeg-static STATIC IMPORTED)

/Users/ruki/.xmake/packages//l/libogg/v1.3.4/05bd3ef519484fab9eed1d9b13064f52/lib/cmake/Ogg/OggTargets-release.cmake
/Users/ruki/.xmake/packages//l/libogg/v1.3.4/05bd3ef519484fab9eed1d9b13064f52/lib/cmake/Ogg/OggConfig.cmake
/Users/ruki/.xmake/packages//l/libogg/v1.3.4/05bd3ef519484fab9eed1d9b13064f52/lib/cmake/Ogg/OggConfigVersion.cmake
/Users/ruki/.xmake/packages//l/libogg/v1.3.4/05bd3ef519484fab9eed1d9b13064f52/lib/cmake/Ogg/OggTargets.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/bbc3030e3d9740ec9ff0a1bd1700dc34/lib/cmake/libjpeg-turbo/libjpeg-turboTargets.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/bbc3030e3d9740ec9ff0a1bd1700dc34/lib/cmake/libjpeg-turbo/libjpeg-turboConfig.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/bbc3030e3d9740ec9ff0a1bd1700dc34/lib/cmake/libjpeg-turbo/libjpeg-turboTargets-release.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/bbc3030e3d9740ec9ff0a1bd1700dc34/lib/cmake/libjpeg-turbo/libjpeg-turboConfigVersion.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/751c846dbd12437b9a6ef45db303fb17/lib/cmake/libjpeg-turbo/libjpeg-turboTargets.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/751c846dbd12437b9a6ef45db303fb17/lib/cmake/libjpeg-turbo/libjpeg-turboConfig.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/751c846dbd12437b9a6ef45db303fb17/lib/cmake/libjpeg-turbo/libjpeg-turboTargets-release.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/751c846dbd12437b9a6ef45db303fb17/lib/cmake/libjpeg-turbo/libjpeg-turboConfigVersion.cmake
/Users/ruki/.xmake/packages//l/libfreenect2/v0.2.0/0a7f97f277c446d3bcbfc7c9d958f184/lib/cmake/freenect2/freenect2Config.cmake
/Users/ruki/.xmake/packages//l/libfreenect2/v0.2.0/14fd476c12ee4531b15b9ad6e918d4d8/lib/cmake/freenect2/freenect2Config.cmake
/Users/ruki/.xmake/packages//l/libfreenect2/v0.2.0/3ecdcb9d50b44110ad83adeb15dc0708/lib/cmake/freenect2/freenect2Config.cmake
/Users/ruki/.xmake/packages//l/libfreenect2/v0.2.0/30439040a22f4fccbdabba3caa4f81d1/lib/cmake/freenect2/freenect2Config.cmake
/Users/ruki/.xmake/packages//l/libfreenect2/v0.2.0/4148585e40a04454ab0dbfad1c6b3053/lib/cmake/freenect2/freenect2Config.cmake

waruqi · 2021-03-23T03:37:20Z

cmake文件内可以用${CMAKE_CURRENT_LIST_DIR}声明相对路径，而不是使用绝对路径 https://cmake.org/cmake/help/latest/variable/CMAKE_CURRENT_LIST_DIR.html

同样，我看现有第三方cmake工程安装的，prefixdir 等都是绝对路径，

绝对路径导致的问题

跟绝对路径没关系，是 win 上 cmake 不支持 \\ , 只能支持 / 。。我忘记转了。。即使相对路径也会有问题。。
我刚修复了。dev

xq114 · 2021-03-23T03:41:25Z

一般来说这个文件是放在share/cmake或者lib/cmake下面而不是lib/cmake/test下面
是否可提供选项去掉project::前缀，直接用find_package()？

我是参考了现有的一些包的安装，ogg, libjpeg 什么的，我看都是 project::xxxx 两级命名，并且都是放在 lib/cmake/xxx 下

add_library(libjpeg-turbo::turbojpeg-static STATIC IMPORTED)

/Users/ruki/.xmake/packages//l/libogg/v1.3.4/05bd3ef519484fab9eed1d9b13064f52/lib/cmake/Ogg/OggTargets-release.cmake
/Users/ruki/.xmake/packages//l/libogg/v1.3.4/05bd3ef519484fab9eed1d9b13064f52/lib/cmake/Ogg/OggConfig.cmake
/Users/ruki/.xmake/packages//l/libogg/v1.3.4/05bd3ef519484fab9eed1d9b13064f52/lib/cmake/Ogg/OggConfigVersion.cmake
/Users/ruki/.xmake/packages//l/libogg/v1.3.4/05bd3ef519484fab9eed1d9b13064f52/lib/cmake/Ogg/OggTargets.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/bbc3030e3d9740ec9ff0a1bd1700dc34/lib/cmake/libjpeg-turbo/libjpeg-turboTargets.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/bbc3030e3d9740ec9ff0a1bd1700dc34/lib/cmake/libjpeg-turbo/libjpeg-turboConfig.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/bbc3030e3d9740ec9ff0a1bd1700dc34/lib/cmake/libjpeg-turbo/libjpeg-turboTargets-release.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/bbc3030e3d9740ec9ff0a1bd1700dc34/lib/cmake/libjpeg-turbo/libjpeg-turboConfigVersion.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/751c846dbd12437b9a6ef45db303fb17/lib/cmake/libjpeg-turbo/libjpeg-turboTargets.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/751c846dbd12437b9a6ef45db303fb17/lib/cmake/libjpeg-turbo/libjpeg-turboConfig.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/751c846dbd12437b9a6ef45db303fb17/lib/cmake/libjpeg-turbo/libjpeg-turboTargets-release.cmake
/Users/ruki/.xmake/packages//l/libjpeg-turbo/2.0.90/751c846dbd12437b9a6ef45db303fb17/lib/cmake/libjpeg-turbo/libjpeg-turboConfigVersion.cmake
/Users/ruki/.xmake/packages//l/libfreenect2/v0.2.0/0a7f97f277c446d3bcbfc7c9d958f184/lib/cmake/freenect2/freenect2Config.cmake
/Users/ruki/.xmake/packages//l/libfreenect2/v0.2.0/14fd476c12ee4531b15b9ad6e918d4d8/lib/cmake/freenect2/freenect2Config.cmake
/Users/ruki/.xmake/packages//l/libfreenect2/v0.2.0/3ecdcb9d50b44110ad83adeb15dc0708/lib/cmake/freenect2/freenect2Config.cmake
/Users/ruki/.xmake/packages//l/libfreenect2/v0.2.0/30439040a22f4fccbdabba3caa4f81d1/lib/cmake/freenect2/freenect2Config.cmake
/Users/ruki/.xmake/packages//l/libfreenect2/v0.2.0/4148585e40a04454ab0dbfad1c6b3053/lib/cmake/freenect2/freenect2Config.cmake

这个问题确实不大，cmake的项目也是五花八门 opencv的cmake直接放在lib下面

我见过的放lib/cmake的比较多，这也是官方tutorial放置的位置

用相对路径的库还是多的，这样复制粘贴到别的地方还能用，改起来也并不复杂，其实自定义的那个import路径就和CMAKE_CURRENT_LIST_DIR差不多

xq114 · 2021-03-23T03:42:54Z

另外想要发布二进制预编译包必须用相对路径

xq114 · 2021-03-23T03:46:49Z

摘自Eigen3Targets.cmake

waruqi · 2021-03-23T04:00:39Z

我见过的放lib/cmake的比较多，这也是官方tutorial放置的位置

我看到的都是分两级的，用来便于管理维护一个project 包含多个 targets 的情况。。

像 tutorial 这种通常都是简单的基础工程，就一个 target，所以可能简化成一级了。。

另外想要发布二进制预编译包必须用相对路径

路径问题，我刚改进过了

xq114 · 2021-03-23T04:56:56Z

现在可以成功编译了

xq114 · 2021-03-23T07:20:53Z

另外，是否考虑加一个机制支持安装到系统的xmake包？例如，两个xmake包安装到/usr/local下，在xmake中无法直接定位这两个包。而在/usr/local下面放xmake.lua当package用也不现实，会导致这两个包冲突。lib/cmake/project/xxConfig.cmake的设计思路则避开了这个问题，能去子目录找对应的cmake文件。

waruqi · 2021-03-23T07:34:51Z

理论上是可以搞，但目前需求不强烈，既然走了 xmake 包，并且还是提供给 xmake 项目用，那就直接集成到 xmake-repo 仓库或者自己的仓库，然后走 add_requires集成就好了

搞成类似 lib/cmake 的方式，以后安装一个系统包，并且要兼容其他构建工具，就会变成，.pc/cmake/xmake 导入文件各一份，装个库，光 import files 就是一坨（如果还有其他构建工具的话），现在已经被很多人喷分裂构建生态了。。

所以，能走 xmake-repo/add_requires 尽量走这个集成，不想过于污染系统库目录，导致充斥各种 lib/xmake 文件。。

现在 cmake一家独大，当然可以这么搞，xmake也这么弄，只会被别人喷

waruqi added the feature request label Mar 6, 2021

waruqi added this to the v2.5.3 milestone Mar 6, 2021

waruqi changed the title ~~support generating fooConfig.cmake and fooTarget.cmake for xmake targets~~ support installing .cmake and pkgconfig/.pc files for targets Mar 22, 2021

waruqi closed this as completed Mar 23, 2021

waruqi mentioned this issue May 19, 2021

Generate cmakelists relying on FindX.cmake files #1418

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support installing .cmake and pkgconfig/.pc files for targets #1268

support installing .cmake and pkgconfig/.pc files for targets #1268

xq114 commented Mar 6, 2021

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support installing .cmake and pkgconfig/.pc files for targets #1268

support installing .cmake and pkgconfig/.pc files for targets #1268

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xq114 commented Mar 6, 2021

你在什么场景下需要该功能？

描述可能的解决方案

描述你认为的候选方案

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