Why does cmake have to be so 64-bit unfriendly ?

H_TeXMeX_H · 04-04-2011, 10:22 AM

How come I can run './configure --prefix=/usr --libdir=/usr/lib64' and it will work 99% of the time, while for cmake the following often do not work, or sometimes work and sometimes don't:

Code:

cmake -DCMAKE_INSTALL_PREFIX=/usr -DLIB_SUFFIX=64 .
cmake -DCMAKE_INSTALL_PREFIX=/usr -DLIB_INSTALL_DIR=/usr/lib64 .
cmake -DOGRE_LIB_DIRECTORY=/usr/lib64 .

Please, if there is any way to be 100% sure that libraries will be installed to /usr/lib64, post it so we can all benefit. I would be very grateful. Otherwise, it seems I will have to steer clear of cmake, because it just doesn't want to listen to anything I tell it. It's just not worth the time and headache.

A concrete example:
http://mygui.info/

business_kid · 04-04-2011, 11:24 AM

I feel your pain.

Your question, however seems to have been answered by your homework in the negative. So this post is more of a safety valve for hot steam :-P.
There _is_ no way to make cmake 64bit friendly. You have proved that. Sadly, guys who write good C and C++ can't necessarily script :-/.

Have you tried setting & exporting $LIBDIR?

There is also the following non-FHS non-kosher bodge: Close all 32 bit stuff
mv /usr/lib /usr/lib32
ln -s /usr/lib64 /usr/lib
./configure etc :-D.
fix lib paths.

Or you can let it scatter files to whatever lib directories it likes, and then cobble a little script to run file -b on them, grep for 32/64 and move them accordingly.

H_TeXMeX_H · 04-04-2011, 01:14 PM

Yes, I was thinking of symlinking it like that. But, this should not be necessary. What if I will need multilib some day, it'll screw everything up. It's really a bad thing to symlink like that, I've done it before and I know.

This problem is most troublesome with OGRE, so I'll just stay away from anything that links to it. I tried those solutions and they don't work.

business_kid · 04-05-2011, 02:56 AM

I wasn't intending the symlink to be a permanent thing. Just for the duration of the make.
FYI, I have a laxer attitude here. On my 64-bit multilib box, my /usr/lib is _predominantly_ 32 bit, but not exclusively so. All the automagic stuff sorts it out just fine, and I get no errors. The only hassle is if I install a 32 bit version of a 64 bit lib that I already have in /usr/lib, and something gets koshed.

You can also simply make packages as you're in slackware. Then you only have a few libs. Mind you, I avoid cmake when I can.

H_TeXMeX_H · 04-05-2011, 10:27 AM

I just noticed that OGRE is installed wrong on my computer. I used the 'DOGRE_LIB_DIRECTORY=/usr/lib64' from the site documentation, and that did install the libs there, but the includes were written to /usr/local. What an absolute mess. I'll just never have anything to do with this OGRE, I guess I know now why it's called that.