Hello,
Carsten Neumann wrote:
> Carsten Neumann wrote:
>> just wanted to let everybody know that I've seen a build problem with
>> cmake 2.6.4. It seems that ADD_SUBDIRECTORY can not be called with the
>> same argument more than once in that version (which breaks our
>> multi-pass approach :( ).
>> I've not looked into this in detail, the above is more a guess than a
>> proper analysis, so if anybody has some insight into this (e.g. is this
>> a deliberate change?) I'd appreciate your input.
>> For the time being I recommend not to upgrade beyond cmake 2.6.3, I'll
>> see if I can find a workaround.
>
> I've asked the cmake list about this, for the curious:
>
> <http://www.cmake.org/pipermail/cmake/2009-May/029237.html>
hm, the official verdict is that you can not call ADD_SUBDIR() multiple
times with the same argument and it can actually break the generated
build system. That is why 2.6.4 now checks and forbids it.
I changed our build to only use two passes (OSGPASS_COLLECT and
OSGPASS_BUILD) one to pick up dependencies and then issue build commands
for the libs, tests and unittest in the second.
A downside of this is that the libs are built with more -I options than
necessary (the INCLUDE_DIRECTORIES() command only has directory scope in
cmake :-/), not nice, but I'm not sure if it worked
correctly/differently before.
Anyways, r1889 works for me with cmake 2.6.4 on linux, I'll test windows
later today, so it might have a few glitches yet.
Cheers,
Carsten
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