[CMake] Getting cmake to apply patches

[Hugh Sorby]

Thanks David,

Following your advice I did the following:

SET( PATCH_BATCH_FILE patch_wrap.bat )
FILE( WRITE ${PATCH_BATCH_FILE} "${PATCH_EXECUTABLE} -p0 -i 
${LIB_DIR}.patch" )
EXECUTE_PROCESS( COMMAND cmake -E chdir ${PROJECT_SOURCE_DIR} 
${PATCH_BATCH_FILE}
    RESULT_VARIABLE RESULT_PATCH )
MESSAGE( STATUS "Patch result: ${RESULT_PATCH}, PROF SOURCE DIR: 
${PROJECT_SOURCE_DIR}" )
FILE( REMOVE ${PATCH_BATCH_FILE} )

This worked (add in your own Windows checks)

David Cole wrote:
> For now, another workaround would be to write a script that calls 
> patch with the -i argument and then invoke the script with 
> execute_process or a different cmake -E command line...
>
>
> On Tue, Nov 24, 2009 at 7:43 PM, Hugh Sorby <h.sorby at auckland.ac.nz 
> <mailto:h.sorby at auckland.ac.nz>> wrote:
>
>     Thanks Alan,
>
>     I will attempt to:
>
>     1) search the CMake bug tracker (not very good at this most never
>     seem to find anything relevant)
>     2) add new bug if 1) fails to bear any fruit.
>
>     Unfortunately the
>
>
>     cmake -E chdir netgen patch -p0 < netgen-4.9.11.patch
>
>     doesn't work so well on Windows Vista which is why I was trying to
>     use the -i option.
>
>
>
>     Alan W. Irwin wrote:
>
>         On 2009-11-25 11:00+1200 Hugh Sorby wrote:
>
>             Sorry about that missed a chdir should be
>
>             cmake -E chdir netgen patch -p0 -i netgen-4.9.11.patch
>
>
>         I confirm that you have found a bug (at least with Debian
>         stable Linux and a
>         bootstrapped cmake version 2.8.0-rc6).  Here is a simple
>         demonstration
>         with "ls -i".
>
>         software at raven> ls -i config.h
>         4539478 config.h
>
>         software at raven> cmake -E chdir . ls -i config.h
>         config.h
>
>         In other words the ls -i option is consumed by CMake just like
>         the patch -i
>         option is consumed for you.  Note that -i is an
>         option for CMake itself (wizard mode) so there is probably
>         some screwup
>         in interpretation of the command line when cmake -E is being run.
>         If I change the flag from -i to -l, then the flag is not
>         consumed and
>         you get the same results for
>
>         "ls -l config.h" and "cmake -E chdir . ls -l config.h".
>          That's consistent
>         with the idea that you will only have trouble with cmake
>         consuming the
>         option when it is an option it recognizes.  ("-l" is not a
>         cmake command
>         option while "-i" is).
>
>         I also confirm the bug occurs for cmake-2.6.0 (the Debian
>         stable system
>         version) which makes it a bug that has been around for quite a
>         while.  I
>         suggest you go ahead and put it in the bugtracker (if you
>         cannot find
>         another report about the same issue there).
>
>         Until this cmake -E option consuming bug is fixed I suggest
>         you could avoid
>         the -i option with patch by using, e.g.,
>
>         cmake -E chdir netgen patch -p0 <netgen-4.9.11.patch
>
>         Alan
>         __________________________
>         Alan W. Irwin
>
>         Astronomical research affiliation with Department of Physics
>         and Astronomy,
>         University of Victoria (astrowww.phys.uvic.ca
>         <http://astrowww.phys.uvic.ca>).
>
>         Programming affiliations with the FreeEOS equation-of-state
>         implementation
>         for stellar interiors (freeeos.sf.net
>         <http://freeeos.sf.net>); PLplot scientific plotting software
>         package (plplot.org <http://plplot.org>); the libLASi project
>         (unifont.org/lasi <http://unifont.org/lasi>); the Loads of
>         Linux Links project (loll.sf.net <http://loll.sf.net>); and
>         the Linux Brochure Project
>         (lbproject.sf.net <http://lbproject.sf.net>).
>         __________________________
>
>         Linux-powered Science
>         __________________________
>
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