[CMake] Escape/quote spaces in ARGS of EXEC_PROGRAM?

[Brad King]

Zachary Pincus wrote:
> Hi folks,
> 
> I'm trying to run a program via EXEC_PROGRAM, where one of the  
> arguments contains ${CMAKE_CURRENT_BINARY_DIRECTORY}, which may of  
> course contain spaces or other characters that need escaping or quoting.
> 
> Here's what the cmake block looks like (it's trying to learn the site- 
> packages directory from python).
> 
> IF(PYTHON_EXECUTABLE)
>   FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/det_spp.py "try:\n  import  
> distutils.sysconfig; print distutils.sysconfig.get_python_lib() 
> \nexcept: pass")
>   EXEC_PROGRAM("${PYTHON_EXECUTABLE}"
>     ARGS "${CMAKE_CURRENT_BINARY_DIR}/det_spp.py"
>     OUTPUT_VARIABLE py_spp)
> ENDIF(PYTHON_EXECUTABLE)
> 
> Right now (using a CMake CVS checkout from yesterday) this fails when  
> the path to the current binary dir has spaces in it. Is there  anything 
> I can do?

Use the new EXECUTE_PROCESS command instead.

If you need compatibility with CMake 2.2 and earlier then escape the 
quotes so they get passed explicitly on the command line"

EXEC_PROGRAM("${PYTHON_EXECUTABLE}"
   ARGS \"${CMAKE_CURRENT_BINARY_DIR}/det_spp.py\"
   OUTPUT_VARIABLE py_spp)

-Brad