[LLVMdev] Building llvm-gcc4

[Reid Spencer]

Hi Erick,

On Wed, 2006-12-20 at 02:10 -0800, Erick Tryzelaar wrote:
> Reid Spencer wrote:
> >> If not, does it make 
> >> sense to package the two in the two packages? 
> >> Macports is a source-based 
> >> packaging system, so it would seem odd to have to temporarily install 
> >> llvm-gcc to build llvm, but then install llvm-gcc in a separate package.
> >>     
> >
> > That issue goes away with llvm-gcc4. You would simply build llvm and
> > then build llvm-gcc4. With llvm-gcc3, its a little more contorted:
> >
> > 1. build llvm tools only (don't build the runtime)
> > 2. build llvm-gcc3
> > 3. build the llvm runtime library
> >   
> 
> Hi Reid,
> 
> I got llvm all up and running, thanks. 

Great!

> I'm now trying to set up 
> llvm-gcc4. Does llvm-gcc4 require the llvm object files, or can I 
> install llvm, remove all the intermediary files, and then build 
> llvm-gcc4? 

llvm-gcc4 links in the objects and libraries built by LLVM, so you can't
remove them. 

> Also, if I'm just doing a one-off build, do I have to make an 
> obj and install directory, or can I just build it straight out of the 
> llvm-gcc4 source directory? 

The recommended way to build any gcc or variant is in a separate obj
directory. It will make things much easier when you want to rebuild (rm
-rf *).

> Finally, do I have to install into the 
> parallel install directory, or can I install into any directory I'd like?

You can install anywhere you like, just set --prefix=/path/to/install/to
on your llvm-gcc configure command.

> 
> Thanks again,
> -e

You're welcome.

Reid.
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