Question

我想做这样的事情：

$ cmake -E "find_package(Boost)"

看它是成功还是失败？（即。所以我可以对项目进行一些依赖检查，并尝试在cmake实际运行CMakeLists.txt之前安装所有这些。

我知道cmake已经有了-E标志但是当我运行它时我只得到一小部分可用命令：

Usage: cmake -E [command] [arguments ...]
Available commands:
  chdir dir cmd [args]...   - run command in a given directory
  compare_files file1 file2 - check if file1 is same as file2
  copy file destination     - copy file to destination (either file or directory)
  copy_directory source destination   - copy directory 'source' content to directory 'destination'
  copy_if_different in-file out-file  - copy file if input has changed
  echo [string]...          - displays arguments as text
  echo_append [string]...   - displays arguments as text but no new line
  environment               - display the current environment
  make_directory dir        - create a directory
  md5sum file1 [...]        - compute md5sum of files
  remove [-f] file1 file2 ... - remove the file(s), use -f to force it
  remove_directory dir      - remove a directory and its contents
  rename oldname newname    - rename a file or directory (on one volume)
  tar [cxt][vfz][cvfj] file.tar [file/dir1 file/dir2 ...]
                            - create or extract a tar or zip archive
  time command [args] ...   - run command and return elapsed time
  touch file                - touch a file.
  touch_nocreate file       - touch a file but do not create it.
Available on UNIX only:
  create_symlink old new    - create a symbolic link new -> old

Answer 1

有-P <source.cmake>标志，将CMake置于脚本处理模式。您可以使用

执行任意CMake代码

execute_process(COMMAND ${CMAKE_PROGRAM} -P yourscript.cmake)

但是从你的find_package(Boost)拨打CMakeLists.txt是没有错的，因为如果没有发现Boost没有立即失败，但是你提供检查这个的方法并做点别的事。

所有依赖性检查都应该在CMakeLists.txt内部而不是外部脚本中完成。

我可以从命令行运行任意CMake功能吗？

1 个答案: