CMAKE ExternalProject_Add文件夹，在构建文件夹中具有前缀

发布于 2025-02-08 14:19:30 字数 1097 浏览 0 评论 0原文

我将库安装到 build/install/libraryname 文件夹中。我得到所有需要的文件。但是除这些文件外，构建文件夹还包含 cgal_depentencies-prefix 文件夹，该文件夹几乎是带有几个.cmake文件的空文件夹。

这个文件夹有什么作用以及为什么存在？

ExternalProject_Add(cgal_dependencies
  URL https://github.com/CGAL/cgal/releases/download/v5.4.1/CGAL-5.4.1-win64-auxiliary-libraries-gmp-mpfr.zip
  CMAKE_ARGS
    -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
    -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
    #-DCMAKE_INSTALL_PREFIX:PATH="${CMAKE_BINARY_DIR}/install"
  SOURCE_DIR   "${CMAKE_BINARY_DIR}/install/cgal_dependencies"
    #INSTALL_DIR   "${CMAKE_INSTALL_PREFIX}/install"
  CONFIGURE_COMMAND "" #do not configure
  BUILD_COMMAND "" #do not buld
  INSTALL_COMMAND "" #installer for now is empty
)

另一个问题是关于外部Project_ADD函数中的参数。有什么区别：

source_dir
install_dir
cmake_args -dcmake_install_prefix：路径

这是文件夹结构：

原文

I install the libraries into build/install/libraryname folder.
I get all the files I need.
But in additional to these files the build folder contains cgal_dependencies-prefix folder that is almost empty folder with a few .cmake files.

What does this folder do and why it exists?

ExternalProject_Add(cgal_dependencies
  URL https://github.com/CGAL/cgal/releases/download/v5.4.1/CGAL-5.4.1-win64-auxiliary-libraries-gmp-mpfr.zip
  CMAKE_ARGS
    -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
    -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
    #-DCMAKE_INSTALL_PREFIX:PATH="${CMAKE_BINARY_DIR}/install"
  SOURCE_DIR   "${CMAKE_BINARY_DIR}/install/cgal_dependencies"
    #INSTALL_DIR   "${CMAKE_INSTALL_PREFIX}/install"
  CONFIGURE_COMMAND "" #do not configure
  BUILD_COMMAND "" #do not buld
  INSTALL_COMMAND "" #installer for now is empty
)

Another question is about arguments inside ExternalProject_Add function.
What is the difference between: