llvm dev - Oct 2007 - [LLVMdev] Problem building LLVM-GCC 4.0 Front End

I've read and followed the README.LLVM file that comes with LLVM-GCC 4.0
Front End source, but got the following error when compiling:

configure: error: You must specify valid path to your LLVM tree with
--enable-llvm=DIR
make: *** [configure-gcc] Error 1

I've done the following in csh before hand:
$ setenv LLVMOBJDIR /home/napi/proj/c2jvm/llvm/llvm-gcc/obj

Where did I go wrong?

Thanks.

Napi

On Fri, 2007-05-11 at 23:38 -0700, Chris Lattner wrote:
> On Fri, 11 May 2007, me22 wrote:
> > I'm not exactly sure how llvm-g++ works.  I think it goes through
the
> > standard gcc sequence (gimple, rtl, and such) but then outputs LLVM
> > (http://llvm.org/docs/LangRef.html), which is the intermediate
> > representation used by the rest of the chain.  To make an LLVM backend
> > you would not need to deal with RTL and such at all.
> 
> llvm-g++ converts from trees to high-gimple to LLVM.  RTL is not involved.
> 
> LLVM also does have an MSIL backend, if you are interested in a JVM 
> backend, it may be a starting point.
> 
> -Chris
> 
-- 
Mohd-Hanafiah Abdullah
Axiomatic Solutions Sdn Bhd
napi at axiomsol.com
http://www.axiomsol.com

On Tue, 2007-10-02 at 11:47 -0700, Bill Wendling wrote:
> On 10/2/07, Mohd-Hanafiah Abdullah <napi at axiomsol.com> wrote:
> > I've read and followed the README.LLVM file that comes with
LLVM-GCC 4.0
> > Front End source, but got the following error when compiling:
> >
> > configure: error: You must specify valid path to your LLVM tree with
> > --enable-llvm=DIR
> > make: *** [configure-gcc] Error 1
> >
> > I've done the following in csh before hand:
> > $ setenv LLVMOBJDIR /home/napi/proj/c2jvm/llvm/llvm-gcc/obj
> >
> > Where did I go wrong?
> >
> Hi Napi,
> 
> I always just specify it with the "--enable-llvm" command instead
of
> an environment variable. The doc might be wrong in this instance...
In the directory obj, I did:

% ../llvm-gcc4.0-2.1.source/configure --prefix=`pwd`/../install
--program-prefix=llvm-
--enable-llvm= /home/napi/proj/c2jvm/llvm/llvm-gcc/obj
--enable-languages=c,c++

But, still got the same problem.

Thanks.

Napi

On Tue, 2007-10-02 at 14:38 -0700, Tanya M. Lattner
wrote:
> > I've read and followed the README.LLVM file that comes with
LLVM-GCC 4.0
> > Front End source, but got the following error when compiling:
> >
> > configure: error: You must specify valid path to your LLVM tree with
> > --enable-llvm=DIR
> > make: *** [configure-gcc] Error 1
> >
> > I've done the following in csh before hand:
> > $ setenv LLVMOBJDIR /home/napi/proj/c2jvm/llvm/llvm-gcc/obj
> >
> > Where did I go wrong?
> 
> LLVMOBJDIR needs to be the LLVM tree, not llvm-gcc.
Could you give me an example of the LLVM tree and of the setting of
LLVMOBJDIR?

Thanks.

Napi