[CMake] linking cmake targets to cpack targets

[Aaron Turner]

On Fri, Feb 27, 2009 at 7:36 AM, Eric Noulard <eric.noulard at gmail.com> wrote:
> 2009/2/27 Aaron Turner <synfinatic at gmail.com>:
>> When I was using autotools, I'd hook up a target "version" to
>> "dist-gzip" so that my version.c (which was auto-generated and had my
>> svn repo revision in it) was always up to date when I built my source
>> tarball.  Is there a way to do that with cpack's package_source
>> target?
>>
>> Doing the obvious:
>>
>> add_dependencies(package_source version)
>>
>> Doesn't work since I'm guessing package_source is another one of those "fake" targets.
>
> Yes I think this is worth a feature request regarding
> how to "add_dependencies" on builtin target
> (install, package_source,  package, etc....)
>
>> Unfortunately, since package_source doesn't depend on
>> the ALL target, I can't hook it up that way nor does there seem to be
>> anything like a CPACK_SOURCE_INCLUDE_FILES (which would be the
>> opposite of CPACK_SOURCE_IGNORE_FILES).
>
> A possible way to do what you want is to create
> your own
>
> package_source_cleanly target
>
> with something like:
>
> ADD_CUSTOM_TARGET(package_source_cleanly
>    COMMAND ${CMAKE_COMMAND} -P ${CMAKE_BINARY_DIR}/PackageSourceCleanly.cmake
> )
>
> The PackageSourceCleanly.cmake file  is your custom CMake script, which
> may force an extra CMake execution before calling cpack itself, for example:
>
> MESSAGE(STATUS "Enforce CMake re-run...")
> EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} .
>                TIMEOUT 3600
>                WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
> MESSAGE(STATUS "Enforce CMake re-run...Done.")
>
> MESSAGE(STATUS "Package Source running cpack...")
> EXECUTE_PROCESS(COMMAND cpack -G TGZ --config CPackSourceConfig.cmake
>                TIMEOUT 3600
>                WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
>
> MESSAGE(STATUS "Copy ${CPACK_SOURCE_PACKAGE_FILE_NAME}.tar.gz -->
> ${CPACK_SOURCE_PACKAGE_FILE_NAME}-${WHO_OUT}-${DATE_OUT}.tar.gz")
> EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -E copy
> ${CPACK_SOURCE_PACKAGE_FILE_NAME}.tar.gz
> ${CPACK_SOURCE_PACKAGE_FILE_NAME}-clean.tar.gz)
> MESSAGE(STATUS "Package backup done in:
> ${CPACK_SOURCE_PACKAGE_FILE_NAME}-clean.tar.gz")
>
> I do use this kind of "trick" for building dated package backup.
> see
> http://www.cmake.org/pipermail/cmake/2008-November/025246.html
> You'll find a modified version of the scripts sent by Ioan at that time.

So is there a clean way to pass the current Cmake config variables to
a new cmake process via execute_process()?  Or do I need to create a
template file and use configure_file() to do that?  Basically, your
above example doesn't work for me because things like
${CPACK_SOURCE_PACKAGE_FILE_NAME} are undefined.

-- 
Aaron Turner
http://synfin.net/
http://tcpreplay.synfin.net/ - Pcap editing and replay tools for Unix & Windows
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