[LLVMdev] recompilation

Misha Brukman brukman at uiuc.edu
Mon Sep 8 09:46:54 PDT 2003

On Sun, Sep 07, 2003 at 11:45:20PM -0500, David Crowe wrote:
> When we recompile, is it possible to "make" only one of the tools, or
> at least relink only the tools whose object files have changed?


% cd ~/llvm/lib
% make           # this (re-)compiles all the libraries
% cd ~/llvm/tools/lli
% make           # re-link the tool IF any of its libraries changed

In fact, you can go into ANY subdirectory and just re-run make there.

Also, you might want to know about this neat `makellvm' script that's in
`llvm/utils'. It provides an easy way of doing the above 4 steps in one

For example, let's say you're working on the Sparc JIT, so you are in 
the directory llvm/lib/Target/Sparc, where you modified some files. Now
you want to recompile the Sparc library, and relink lli.

llvm/lib/target/Sparc% ../../../utils/makellvm lli

That's it! For more options, run `makellvm -h', and you can also add
the directory `llvm/utils' to your path so you can just call:

llvm/lib/target/Sparc% makellvm lli

Hope that helps.

Misha Brukman :: http://misha.brukman.net

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