2011/7/12 Thomas Petazzoni <thomas.petazz...@free-electrons.com>:
> Hello,
>
> Le Sun, 05 Jun 2011 11:02:00 +0200,
> Quintus <sutn...@gmx.net> a écrit :
>
>> I'm working on a git-versioned project that I'd like to display it's
>> version number for development versions like this:
>>
>> 1.2.3-dev (commit abc1234 on devel, 12/4/10)
>
> For similar need I did something like :
>
> execute_process(COMMAND sh ../getlocalversion OUTPUT_VARIABLE MYPROG_VERSION)
> add_definitions(-DMYPROG_VERSION="${MYPROG_VERSION}")
>
> where getlocalversion is a shell script that does :
>
> printf "%s%s" $(git rev-parse --verify --short HEAD) $(if test `git
> diff-index --name-only HEAD | wc -l` -ne 0 ; then echo "-dirty"; fi)
>
> However, I am not very happy with this, because the version is
> determined at configuration time, and not at compile time. Therefore,
> if I make some changes and commit them to the Git repository without
> re-doing the CMake configuration step, the program version isn't
> changed. Any idea on how to make sure that the version of the program
> is updated at every compilation ?
If you want to execute **build time** scripts you should use
add_custom_command/add_custom_target
You'll have to make your script create a header that will be included
in the concerned source file(s), something like:
add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/version.h
COMMAND getlocalversion --output
${CMAKE_CURRENT_BINARY_DIR}/version.h)
If the script is smart enough not to re-create the file if the version
did not change
then it should work without too much overhead. If not this will trigger
a undue recompilation.
if the version.h concerns a single target you could use:
add_custom_command(TARGET versionedTarget
PRE_BUILD
COMMAND getlocalversion --output
${CMAKE_CURRENT_BINARY_DIR}/version.h)
this build of the "versionedTarget" should trigger the command.
--
Erk
Membre de l'April - « promouvoir et défendre le logiciel libre » -
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