编写find_package.lua：

localpackage=find_package("cmake::QWindowKit",     {presets= {QWindowKit_DIR="C:/qwindowkit/build/install/lib/cmake/QWindowKit",CMAKE_PREFIX_PATH="C:/Qt/5.15.2/mingw81_64/lib/cmake/Qt5"        },force=true,configs= {search_mode="config",link_libraries= {"QWindowKit::Core"            }        }    })print("Package:",package)

执行命令

$ xmake l find_package.luaPackage: {   ldflags = { },  flags = { },  includedirs = {     "C:/Users/truef/Documents/GitHub/qwindowkit/build/install/include/QWindowKit",    "C:/Qt/5.15.2/mingw81_64/include/",    "C:/Qt/5.15.2/mingw81_64/include/QtCore",    "C:/Qt/5.15.2/mingw81_64/.//mkspecs/win32-g++",    "C:/Qt/5.15.2/mingw81_64/include/QtGui",    "C:/Qt/5.15.2/mingw81_64/include//QtANGLE"   },  libfiles = {     "QWindowKit::Core"   },  linkdirs = { },  defines = {     "QWK_CORE_STATIC",    "QT_CORE_LIB",    "QT_NO_DEBUG",    "QT_GUI_LIB"   },  links = {     "C:/Users/truef/Documents/GitHub/qwindowkit/build/install/lib/QWKCore.a",         "-luxtheme",    "C:/Qt/5.15.2/mingw81_64/lib/libQt5Gui.a",    "C:/Qt/5.15.2/mingw81_64/lib/libQt5Core.a",    "-lkernel32",    "-luser32",    "-lgdi32",    "-lwinspool",    "-lshell32",    "-lole32",    "-loleaut32",    "-luuid",    "-lcomdlg32",    "-ladvapi32"  }}

因为有一堆命令行参数前缀，这个地方接下去我不太清楚怎么处理了，可能需要你把 TODO 里的内容给处理下，另外，之前find_package的返回字典里好像不包括 compile flags，我加了。

ninja 里面的 includedirs 可能是这样包含一堆-I、-isystem，MSVC 可能是-external:I什么的，我上面的例子是用了 main-info.txt 里的所以都是正常的文件夹：

buildCMakeFiles/main.dir/main.cpp.obj:CXX_COMPILER__main_unscanned_DebugC$:/Users/truef/Documents/GitHub/xmake-learning/extract-cmake/main.cpp||cmake_object_order_depends_target_mainDEFINES= -DQT_CORE_LIB -DQT_GUI_LIB -DQT_WIDGETS_LIB -DQWK_CORE_STATICFLAGS= -flagsINCLUDES= -I"C:/xmake-learning/extract-cmake/test space" -isystem C:/qwindowkit/build/install/include/QWindowKit -isystem C:/Qt/5.15.2/mingw81_64/include -isystem C:/Qt/5.15.2/mingw81_64/include/QtCore -isystem C:/Qt/5.15.2/mingw81_64/./mkspecs/win32-g++ -isystem C:/Qt/5.15.2/mingw81_64/include/QtGui -isystem C:/Qt/5.15.2/mingw81_64/include/QtANGLE -isystem C:/Qt/5.15.2/mingw81_64/include/QtWidgets

这些参数前缀可能需要去掉。

我之后再补充一些测试。

这里我补充了对 MSVC 的处理。

libfiles 和 links 其实是一样的，都是链接的库。这里可能没考虑 mac 的 framework。
flags 之前没有，我加进返回值里了。

Bot detected the issue body's language is not English, translate it automatically.

I'll add some tests later.

Bot detected the issue body's language is not English, translate it automatically.

Here I have added the treatment of MSVC.

libfiles and links are actually the same, both are linked libraries. The framework of mac may not be considered here.
flags has not been used before, I added it to the return value.

现在有个小问题。

我们生成的 CMakeLists.txt 里添加了一个测试目标，然后从 build.ninja 里获取到的 link libraries 有极小概率是跟目标类型有关的，比如 QtCore 会为 Win32 的 exe 目标添加 qt winmain 的库（其实这种就相当于是 xmake 里的 rule，但是 Qt 是用生成表达式把 qtmain 给写进 CMake 的 Qt::Core 的 INTERFACE_LINK_LIBRARIES 属性去了），不过总体来说问题不大，可以在 xmake 里特殊判断然后补上，我在 find_package 的 options 里加了 target_type 的提示字段，可以传 executable、shared、static。

Linux上不行，用假的ninja会失败，CMake 会多次调用ninja的recompact、restat

Bot detected the issue body's language is not English, translate it automatically.

Not possible on Linux, using fakeninja will fail, CMake will call ninja's recompact and restat multiple times

Linux上不行，用假的ninja会失败，CMake 会多次调用ninja的recompact、restat

怎么个调用法，传递不同的参数？根据不同参数去返回不同状态来绕过呢

Bot detected the issue body's language is not English, translate it automatically.

Not available on Linux, using fakeninja will fail, CMake will call ninja's recompact and restat multiple times

How to pass different parameters in a call? Return to different states according to different parameters to bypass

Linux上不行，用假的ninja会失败，CMake 会多次调用ninja的recompact、restat

怎么个调用法，传递不同的参数？根据不同参数去返回不同状态来绕过呢

使用假的 ninja 的时候，CMake 检查编译器输出的 CMakeCXXCompiler.cmake 里面的信息是不全的，包括连接器路径，编译器字长什么的都是空的，这些会影响后面 find_package 的流程。比如 GNUInstallDirs 里就需要用 CMAKE_SIZEOF_VOID_P，这个是空的，就炸了。

细节点说，CMake 检查的时候会调用try_compile生成一个ninja.build文件，然后会调用 ninja 去 make，所以 ninja 的功能还是被用到了。

Bot detected the issue body's language is not English, translate it automatically.

Not available on Linux, using fakeninja will fail, CMake will call ninja's recompact and restat multiple times

How to pass different parameters? Return to different states according to different parameters to bypass

When using fake ninja, CMake checks that the information in CMakeCXXCompiler.cmake output by the compiler is incomplete, including the connector path, the compiler word length and other empty, which will affect the subsequent find_package process. For example, in GNUIinstallDirs, you need to use CMAKE_SIZEOF_VOID_P, which is empty and will explode.

Linux上不行，用假的ninja会失败，CMake 会多次调用ninja的recompact、restat

怎么个调用法，传递不同的参数？根据不同参数去返回不同状态来绕过呢

使用假的 ninja 的时候，CMake 检查编译器输出的 CMakeCXXCompiler.cmake 里面的信息是不全的，包括连接器路径，编译器字长什么的都是空的，这些会影响后面 find_package 的流程。比如 GNUInstallDirs 里就需要用 CMAKE_SIZEOF_VOID_P，这个是空的，就炸了。

细节点说，CMake 检查的时候会调用try_compile生成一个ninja.build文件，然后会调用 ninja 去 make，所以 ninja 的功能还是被用到了。

那非 win 下，还是之前的搞法，切到 make/makefile 上去，不走 ninja

Bot detected the issue body's language is not English, translate it automatically.

Not available on Linux, using fakeninja will fail, CMake will call ninja's recompact and restat multiple times

How to pass different parameters? Return to different states according to different parameters to bypass

When using fake ninja, CMake checks that the information in CMakeCXXCompiler.cmake output by the compiler is incomplete, including the connector path, the compiler word length and other empty, which will affect the subsequent find_package process. For example, in GNUIinstallDirs, you need to use CMAKE_SIZEOF_VOID_P, which is empty and will explode.

Details say that when CMake checks, it will calltry_compile to generate aninja.build file, and then call ninja to make, so the function of ninja is still used.

That's not win, but the previous method is to cut to make/makefile and not leave ninja

Linux上不行，用假的ninja会失败，CMake 会多次调用ninja的recompact、restat

怎么个调用法，传递不同的参数？根据不同参数去返回不同状态来绕过呢

使用假的 ninja 的时候，CMake 检查编译器输出的 CMakeCXXCompiler.cmake 里面的信息是不全的，包括连接器路径，编译器字长什么的都是空的，这些会影响后面 find_package 的流程。比如 GNUInstallDirs 里就需要用 CMAKE_SIZEOF_VOID_P，这个是空的，就炸了。
细节点说，CMake 检查的时候会调用try_compile生成一个ninja.build文件，然后会调用 ninja 去 make，所以 ninja 的功能还是被用到了。

那非 win 下，还是之前的搞法，切到 make/makefile 上去，不走 ninja

win 下我觉得也不能这样了。现在因为这个，linux 会找不到 GNUInstallDirs，虽然 windows 没这个问题，但是说不准会有什么暗病，因为那些变量就是缺了。

Bot detected the issue body's language is not English, translate it automatically.

Not available on Linux. Using the fakeninja will fail. CMake will call ninja's recompact and restat multiple times

How to pass different parameters? Return to different states according to different parameters to bypass

When using fake ninja, CMake checks that the information in CMakeCXXCompiler.cmake output by the compiler is incomplete, including the connector path, the compiler word length and other empty, which will affect the subsequent find_package process. For example, in GNUIinstallDirs, you need to use CMAKE_SIZEOF_VOID_P, which is empty and will explode.
Details say that when CMake checks, it will calltry_compile to generate aninja.build file, and then call ninja to make, so the function of ninja is still used.

Then it's better to win, but the previous method is to cut to make/makefile and not leave ninja

I don't think this is the case after win. Now because of this, Linux will not be able to find GNUIinstallDirs. Although Windows does not have this problem, it is not certain that there will be any hidden problems, because those variables are missing.

l

Linux上不行，用假的ninja会失败，CMake 会多次调用ninja的recompact、restat

怎么个调用法，传递不同的参数？根据不同参数去返回不同状态来绕过呢

使用假的 ninja 的时候，CMake 检查编译器输出的 CMakeCXXCompiler.cmake 里面的信息是不全的，包括连接器路径，编译器字长什么的都是空的，这些会影响后面 find_package 的流程。比如 GNUInstallDirs 里就需要用 CMAKE_SIZEOF_VOID_P，这个是空的，就炸了。
细节点说，CMake 检查的时候会调用try_compile生成一个ninja.build文件，然后会调用 ninja 去 make，所以 ninja 的功能还是被用到了。

那非 win 下，还是之前的搞法，切到 make/makefile 上去，不走 ninja

win 下我觉得也不能这样了。现在因为这个，linux 会找不到 GNUInstallDirs，虽然 windows 没这个问题，但是说不准会有什么暗病，因为那些变量

那就没办法了，要么继续去硬解的vcproj

Bot detected the issue body's language is not English, translate it automatically.

l

Not available on Linux. Using fakeninja will fail. CMake will call ninja's recompact and restat multiple times

How to pass different parameters? Return to different states according to different parameters to bypass

When using fake ninja, CMake checks that the information in CMakeCXXCompiler.cmake output by the compiler is incomplete, including the connector path, the compiler word length and other empty, which will affect the subsequent find_package process. For example, in GNUIinstallDirs, you need to use CMAKE_SIZEOF_VOID_P, which is empty and will explode.
Details say that when CMake checks, it will calltry_compile to generate aninja.build file, and then call ninja to make, so the function of ninja is still used.

Then it's better to win, just cut to make/makefile and don't leave ninja

I don't think this is the case after win. Now because of this, Linux will not be able to find GNUIinstallDirs. Although Windows does not have this problem, it is not certain that there will be any hidden problems, because of those variables

Then there is nothing to do, either continue to solve the problem of vcproj

或者可以在 win上生成 nmake makefile，然后统一走makefile解析提取

Bot detected the issue body's language is not English, translate it automatically.

Or you can generate nmake makefile on win, and then go to makefile to parse and extract.

这个先放着吧，我过段时间看看

Bot detected the issue body's language is not English, translate it automatically.

Let's leave this for now, I'll take a look in a while