如何在cmake中测试文件名是否与glob匹配存在？

Question

如何在cmake中测试文件名是否与glob匹配存在？

4

我想创建一个仅在指定的glob文件名存在时为true的条件。就像这样（这不是工作的cmake代码，只是为了表达我的意图）：

if(EXISTS "${LIBRARY_PATH}/lib*.a")
  ...
elseif(EXISTS "${LIBRARY_PATH}/lib/*.dll")
  ...

- Gabor Marton

1个回答

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- DevSolar · Accepted Answer

file( GLOB cmake_varibale ${LIBRARY_PATH}/lib*.a )

将所有匹配的文件列表放入cmake_variable中，然后您可以测试它是否为空。

来自cmake --help-command file：

     ...
     file(GLOB variable [RELATIVE path] [globbing expressions]...)
     file(GLOB_RECURSE variable [RELATIVE path] 
          [FOLLOW_SYMLINKS] [globbing expressions]...)
     ...

   ...

   GLOB will generate a list of all files that match the globbing
   expressions and store it into the variable.  Globbing expressions are
   similar to regular expressions, but much simpler.  If RELATIVE flag is
   specified for an expression, the results will be returned as a
   relative path to the given path.  (We do not recommend using GLOB to
   collect a list of source files from your source tree.  If no
   CMakeLists.txt file changes when a source is added or removed then the
   generated build system cannot know when to ask CMake to regenerate.)

   Examples of globbing expressions include:

      *.cxx      - match all files with extension cxx
      *.vt?      - match all files with extension vta,...,vtz
      f[3-5].txt - match files f3.txt, f4.txt, f5.txt

   GLOB_RECURSE will generate a list similar to the regular GLOB, except
   it will traverse all the subdirectories of the matched directory and
   match the files.  Subdirectories that are symlinks are only traversed
   if FOLLOW_SYMLINKS is given or cmake policy CMP0009 is not set to NEW.
   See cmake --help-policy CMP0009 for more information.

   Examples of recursive globbing include:

      /dir/*.py  - match all python files in /dir and subdirectories

   ...