All,

I ran some more testing against the cmake 2.8.12 CMP-0022 problem.

The TL;DR version:

The proposed patch partially works but needs attention. If we refine the patch to eliminate certain errors we probably will be able to place this entire cmake episode behind us. :-)

The longer story:

On Slackware 14.0 I have no problems compiling Trinity packages. The stock Slackware 14.0 came with cmake 2.8.8, but a while ago I updated my 14.0 build environment to cmake 2.8.10.2. I updated cmake because I was trying to anticipate what eventually would become Slackware 14.1. Along the way of developing the 14.1 branch after Slackware 14.0, cmake was updated to 2.8.10.2. Regardless, I have had no problems with 2.8.8 or 2.8.10.2.

Slackware 14.0 comes with gcc 4.7.1 and glibc 2.15.

In all of the following tests I attempted to build only the dependencies and core packages through tdebase. In each test I rebuilt all packages except TQt3 because that package has no cmake requirements.

On Slackware 14.0, I built and installed cmake 2.8.12.0. I did not apply the proposed patch. I saw a slew of CMP0022 warnings for arts and tdelibs. While arts did compile, I was unable to build tdelibs.

Next on Slackware 14.0, I built and installed cmake 2.8.12.1. I did not apply the proposed patch. I again saw a slew of CMP0022 warnings for arts, tdelibs, and tdebase. This time I was able to build tdelibs and tdebase. Thus 2.8.12.1 does provide a work-around to 2.8.12.0.

Next on Slackware 14.0, I returned to cmake 2.8.8 (the version provided in the original 14.0). I applied the proposed patch. This was to test backwards compatibility of the patch in distros using cmake < 2.8.12. I got as far as tdelibs with no errors or warnings. tdebase failed to build, with a slew of errors such as the following:

/dev/shm/tdebase/tdmlib/kgreet_classic.cpp:494: undefined reference to `TQString::TQString(char const*)' /dev/shm/tdebase/tdmlib/kgreet_classic.cpp:494: undefined reference to `TDEGlobal::locale()' /dev/shm/tdebase/tdmlib/kgreet_classic.cpp:494: undefined reference to `TDELocale::removeCatalogue(TQString const&)' CMakeFiles/kgreet_winbind- module.dir/kgreet_winbind.cpp.o:(.data.rel.ro._ZTI7TQGList[_ZTI7TQGL ist]+0x8): undefined reference to `typeinfo for TQPtrCollection' CMakeFiles/kgreet_winbind- module.dir/kgreet_winbind.cpp.o:(.data.rel.ro._ZTI15KWinbindGreeter[ _ZTI15KWinbindGreeter]+0x10): undefined reference to `typeinfo for TQObject' CMakeFiles/kgreet_winbind- module.dir/kgreet_winbind.cpp.o:(.data.rel.ro._ZTV7TQGList[_ZTV7TQGL ist]+0xc): undefined reference to `TQGList::clear()'

Next on Slackware 14.0, I returned to cmake 2.8.10.2. I applied the proposed patch. Again no build failures through tdelibs while tdebase failed to build with the same errors.

Next on Slackware 14.0, I returned to cmake 2.8.12.0. I applied the proposed patch. tdelibs failed to build, but I saw the same failures in Slackware 14.1. Apparently at least part of the patch is required to build tdelibs with cmake 2.8.12.0.

Next on Slackware 14.0, I returned to cmake 2.8.12.1. I applied the proposed patch. Again no build failures through tdelibs while tdebase failed to build with the same errors.

The original cmake 2.8.12 problems I reported occurred with Slackware 14.1 and not 14.0. I used 14.0 as a test environment to establish some kind of baseline.

The primary differences between Slackware 14.1 and 14.0: cmake 2.8.12.0 vs. 2.8.8, gcc 4.8.2 vs. 4.7.1, and glibc 2.17 vs. 2.15. Yet by using Slackware 14.0 I believe I affirmed the failures I am experiencing are not related to gcc, glibc, etc.

Some Trinity members report they can build Trinity with cmake 2.8.12.0 although they witness the slew of CMP0022 warnings. With 2.8.12.X I always have been able to build arts but always either fail to build tdelibs or tdebase. The proposed patch allows me to build tdelibs but not tdebase.

I don't believe the problem is Slackware 14.1. Just cmake 2.8.12.X.

Darrell