[CMake] Running shell scripts...

[Bill Hoffman]

Benjamen R. Meyer wrote:
> Brandon Van Every wrote:
>> On Feb 3, 2008 7:16 PM, Benjamen R. Meyer <bm_witness at yahoo.com> wrote:
>>> I wrote a bash shell script to get the SVN global revision information
>>> (e-mail me privately if you want a copy) to put into a header file under
>>> POSIX systems. The script is located at ${CMAKE_ROOT}; however, I am
>>> having difficulty getting it to appear in the Makefile. Below is the
>>> syntax from top-most CMakeLists.txt:
>>>
>>> IF (WIN32)
>>>         # Execute Win32 Specific commands - none yet.
>>> ELSE (WIN32)
>>>         # Execute commands for other platforms
>>>         ADD_CUSTOM_COMMAND(
>>>                 OUTPUT SVN_REVISION
>>>                 COMMAND ${CMAKE_ROOT}/getSVNversion.sh
>>>                 WORKING_DIRECTORY ${CMAKE_ROOT}
>>>                 COMMENT "Creates/updates header SVN Revision Header"
>>>                 )
>>> ENDIF (WIN32)
>> OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/SVN_REVISION
>> Otherwise an out of source build fails.
> 
> 
> Ok, makes sense...but it still isn't showing up in the Makefile. Running
> the following command in Bash still doesn't yield any results:
> 
> builddir $ for FILE in `find|grep Makefile`; do grep getSVNversion\.sh
> ${FILE}; done;
> 

You need a custom target or some other target that uses the output of 
the custom command.  Otherwise, cmake will not have any reason to 
produce the rule for this, as it would never be run anyway.  I think 
there is some stuff about this on the wiki...

-Bill