In that case I recommend creating a CMake script (e.g.
create_application_version.cmake) which creates the ApplicationVersion.xml
file. It queries the current revision (have a look at FindSVN.cmake on how to
do this), determines the date and time (this is a problem, refer to this thread
for more info: http://www.mail-archive.com/[email protected]/msg30662.html) and
then either does a configure_file() or a file(WRITE) to create
ApplicationVersion.xml. Ideally the create_application_version.cmake is also a
configured file (with the path to the build and source tree and the path to the
svn executable etc.).
This script is then invoked by a custom command:
# dummy_file is never created...
add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/ApplicationVersion.xml
${CMAKE_BINARY_DIR}/dummy_file
COMMAND ${CMAKE_EXECUTABLE} -P
${CMAKE_BINARY_DIR}/create_application_version.cmake
COMMENT "Creating ApplicationVersion.xml"
VERBATIM
)
# this intentionally depends on dummy_file, which is never created
add_custom_target(create_appplication_version ALL
DEPENDS ${CMAKE_BINARY_DIR}/ApplicationVersion.xml
${CMAKE_BINARY_DIR}/dummy_file)
add_executable(super_duper main.cpp ${CMAKE_BINARY_DIR}/ApplicationVersion.xml)
add_dependencies(super_duper create_appplication_version)
The trick I'm trying to pull off, is that super_duper depends on
create_appplication_version, which is always out of date and depends on the
non-existing file dummy_file, thus always updating ApplicationVersion.xml. Not
that I haven't tested this.
Michael
On 19. Aug, 2010, at 18:54 , Roman Wüger @mac.com wrote:
> The file should be updated every time a build is started.
>
> Best Regards
> NoRulez
>
> Am 19. Aug 2010 um 16:48 schrieb Michael Wild <[email protected]>:
>
>>
>> On 19. Aug, 2010, at 16:38 , Roman Wüger @mac.com wrote:
>>
>> > Hello,
>> >
>> > i need to create a file called "ApplicationVersion.xml" before the main
>> > source file (main.cpp) would be compiled.
>> > The file should contain some application details and the current Date/Time
>> > and SVN Revision.
>> >
>> > How can I create such file before the source file are compiled?
>> > How can I get the current Date/Time and the SVN Revision?
>> >
>> > Thanks in advance
>> >
>> > Best Regards
>> > NoRulez
>>
>>
>> When should the file be updated? At configure time or every time a build is
>> started?
>>
>> Michael
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