[CMake] ExternalProject + Patch command

[Johan Björk]

Re-downloading it would be fine. How can I make sure a different
directory gets used? Since I'm using a multi-configuration IDE, I
can't think of any variables to use for PREFIX or such.

-Johan


On Wed, Mar 16, 2011 at 5:37 PM, David Cole <david.cole at kitware.com> wrote:
> It would be nice (as a future feature addition) to be able to support
> sharing the download/update/patch/source_dir aspects of an
> ExternalProject target among multiple configurations and avoid the
> multiple runs of these things that are exactly the same independent of
> the config.
>
> Until that dream becomes reality, though.....
>
> You could run a script as the PATCH_COMMAND, and put some sort of "has
> this patch already been applied to this source tree" logic into the
> script, and only actually do the patch command if not already applied.
>
> It's a work-around, and might be ugly, but it should work.
>
>
> HTH,
> David
>
>
> On Wed, Mar 16, 2011 at 11:40 AM, Johan Björk <phb at spotify.com> wrote:
>> Hi everyone,
>>
>>
>> I'm using an SVN repository and a PATCH command. It seems to work
>> fine, but when I'm selecting a different build configuration, all
>> steps will be executed again (as expected), but it results in my patch
>> being applied twice.
>>
>> Any ideas how to work around this?
>>
>> My externalProject command for reference:
>>
>>    ExternalProject_Add(Breakpad
>>      SVN_REPOSITORY http://google-breakpad.googlecode.com/svn/trunk/
>>      UPDATE_COMMAND ""
>>      CMAKE_ARGS -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
>> -DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=${CMAKE_OSX_DEPLOYMENT_TARGET}
>> -DCMAKE_OSX_ARCHITECTURES:STRING=${CMAKE_OSX_ARCHITECTURES}
>>      PATCH_COMMAND patch <
>> ${CMAKE_CURRENT_LIST_DIR}/other/patches/breakpad.patch
>>    )
>>
>> Thanks
>> /Johan
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-- 
Johan Björk
Team Lead, Development Tools
Spotify AB
Address: Birger Jarlsgatan 6, 114 46 Stockholm, Sweden
Phone:+46 (0)709 22 59 02
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