[CMake] Help with Execute_Process

[Bill Hoffman]

Alan W. Irwin wrote:
> On 2008-07-15 13:10+0200 Carminati Federico wrote:
> 
>> Hello,
>>  I would like to execute the following command
>>
>> Execute_Process(
>>  COMMAND svn info | grep \"Last Changed Rev:\" |  cut -d: -f2
>>  OUTPUT_VARIABLE _res)
>>
>> But concatenation with pipes does not work. Any hint? Best regards,
> 
> I haven't tried this myself, but the execute_process documentation says:
> 
> "Runs the given sequence of one or more commands with the standard 
> output of
> each process piped to the standard input of the next.  A single standard
> error pipe is used for all processes."
> 
> So I think
> 
> COMMAND svn info
> COMMAND grep \"Last Changed Rev:\" COMMAND  cut -d: -f2
> 
> should do what you want.
> 
That should work, but it would be better to just get the output of svn 
info into a cmake string and process it in CMake directly.  That way 
your project will not depend on grep and cut being on the system.

-Bill

-- 
Bill Hoffman
Kitware, Inc.
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