[Kmymoney-devel] cmake errors

[Alvaro Soliverez]

On Wed, May 19, 2010 at 2:42 PM, Jack <ostroffjh at users.sourceforge.net> wrote:
> On 2010.05.19 13:29, Alvaro Soliverez wrote:
>>
>> On Wed, May 19, 2010 at 1:43 PM, Jack <ostroffjh at users.sourceforge.net>
>> wrote:
>> > On 2010.05.19 10:40, David Houlden wrote:
>> >> OK. I've been investigating a bit more. These errors only occur if I
>> >> use the CMakeLists.txt which I get from running createtarball.rb. I
>> >> do this so I can build kmymoney from source with all the
>> >> documentation. I'm just following the instructions to do this which
>> >> Alvaro posted here back in March. Should I be doing something
>> >> different since the release of 3.98?
>> >>
>> >> On Tuesday 18 May 2010 David Houlden wrote:
>> >> > Hi,
>> >> >
>> >>> I have been building the svn version for a very long time with few
>> >>> problems but tonight I did an svn update to 1128271 and then got
>> >>> errors when running cmake .. in my build directory. Here are some of
>> >>> the errors.
>> >> >
>> >> > CMake Error at /usr/share/apps/cmake/modules/FindGettext.cmake:229
>> >> > (ADD_CUSTOM_TARGET):
>> >> >   add_custom_target cannot create target "pofiles" because another
>> >> target
>> >> >   with the same name already exists.  The existing target is a
>> >> custom
>> >> > target created in source directory
>> >> >   "/usr/local/src/extras/kmymoney-svn-kde4/kmymoney/po/bg".  See
>> >> >   documentation for policy CMP0002 for more details.
>> >> > Call Stack (most recent call first):
>> >> >   po/ca/CMakeLists.txt:2 (GETTEXT_PROCESS_PO_FILES)
>> >
>> > OK.  This is indeed strange.  I did a complete successful compile from
>> > createtarball two days ago.  I tried it again today, and get those same
>> > errors - one for each directory under .../kmymoney-3.98.0/po except the
>> > first (bg).
>> >
>> > However - line 5 in kmymoney-3.98.0/CMakeLists.txt changed from
>> > "CMAKE_MINIMUM_REQUIRED(VERSION 2.6)" as of two days ago to
>> > "CMAKE_MINIMUM_REQUIRED(VERSION 2.6.4)" today.  The only other changes
>> > are some new png files in the doc directory and differences in the
>> > kmymoney.po files for pt, pt_BR, sk, sv, and uk.  If I change the 2.6.4
>> > to 2.6, then cmake succeeds.
>> >
>> > Why did this change, and why would it change the behavior?  Is it
>> > telling gettext to apply a different policy regarding the apparent
>> > duplicate target?
>>
>> can you try adding this to the main CMakeLists.txt?
>>
>> set_property(GLOBAL PROPERTY ALLOW_DUPLICATE_CUSTOM_TARGETS 1)
>>
>> I'm trying it here, and it seems to work with CMake 2.6.4
>>
> Yes - leaving CMAKE_MINIMUM_REQUIRED(VERSION 2.6.4) and adding your line
> allows cmake to go to completion without error.  Note that the issue isn't
> the version of cmake running, but the specification of 2.6.4 instead of 2.6
> in the CMAKE_MINIMUM_REQUIRED line.
>
Yes, that's because a default behaviour changes between 2.6.0 and
2.6.4. So, I think changing the minimum version must be changing that
behaviour (namely, what to do when it finds a duplicate target)

The line I added solves that problem by allowing duplicate targets, as
it was in previous versions. Of course, it is not a great solution
because it could lead to errors in the future, but it works for now.