[CMake] Getting the svn revision number of our source.

[Michael Oldfield]

On 02/07/14 09:04, Rick McGuire wrote:
> We like to include the SVN revision number in our build artifacts to
> help keep track of what version people are working with.  I found the
> following code on the mailing lists which appears to work fine:  
> 
> # Get the SVN revision number of an svn command line client is
> # available.  This version will run at build time rather than only
> # at configuration generation time.
> FIND_PROGRAM(SVN_EXECUTABLE svn
>   DOC "subversion command line client")
> 
> # only do this if we have an svn client.
> if (SVN_EXECUTABLE)
>     MACRO(Subversion_GET_REVISION dir variable)
>       EXECUTE_PROCESS(COMMAND ${SVN_EXECUTABLE} info ${dir}
>         OUTPUT_VARIABLE ${variable}
>         OUTPUT_STRIP_TRAILING_WHITESPACE)
>       STRING(REGEX REPLACE "^(.*\n)?Revision: ([^\n]+).*"
>         "\\2" ${variable} "${${variable}}")
>     ENDMACRO(Subversion_GET_REVISION)
> 
>     Subversion_GET_REVISION(${CMAKE_SOURCE_DIR} ORX_BLD_LVL)
> endif ()
> 
> message(STATUS "SVN Revision Number is ${ORX_BLD_LVL}")
> 
> 
> Unfortunately, the first person not in the core team who building was running a Spanish language version of SVN, so the ORX_BLD_LEVEL variable ended up with the entire output of the svn info command because it could not find the string REVISION.  This was not a good thing!
> 
> 
> Is there a better way to obtain the SVN revision number that does not suffer from this sort of problem?
> 
> 
> Rick

Hi Rick,

You should try the command svnversion'. That should give just the
revision number, and no extraction code will be necessary.

Michael