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")
...
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
...
list(LENGTH possible_paths paths_len)
和if(paths_len GREATER 0)
。 - SolomidHero