[Octave-bug-tracker] [bug #40705] Trouble compiling JIT on Ubuntu 12.04

[Arun Giridhar]

Follow-up Comment #20, bug #40705 (project octave):

Data: running 64bit Ubuntu 12.04

David, I thought I'd share a couple LLVM package-related tips.  Please check
if the package is llvm-3.X or libllvm3.X. If it warns you that unrelated
things like Xorg and ubuntu-desktop will be removed it's trying to remove
libllvm and not just plain llvm.

I just purged my old llvm-3.0 and installed llvm-3.2 with this:

sudo apt-get purge llvm-3.0*
sudo apt-get install llvm-3.2 llvm-3.2-dev llvm-3.2-doc

No dependencies required like llvm-2.9 etc.

If you have a program somewhere called just plain "llvm-config", make sure
it's the correct version. Sometimes it's a symlink to the old version instead
of the latest version. Even better, specify llvm-config-3.2.

I updated my Octave config script to use 3.2 instead of 3.0:

../octave/configure [bunch of options here, ending with:] LLVM_CONFIG=`which
llvm-config-3.2`

and configured and built it. Works fine. Can't tell any difference between
llvm 3.0 and llvm 3.2 though.

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