[LLVMdev] advice on default options for building LLVM-GCC on Ubuntu Linux

Bill Wendling isanbard at gmail.com
Tue Apr 7 12:01:30 PDT 2009

On Tue, Apr 7, 2009 at 11:39 AM, Bob Wilson <bob.wilson at apple.com> wrote:
> On Apr 7, 2009, at 11:17 AM, Bill Wendling wrote:
>> I understand. Believe me, I'm not a big fan of this method of building
>> llvm-gcc either. But I'm not a Makefile guru, so I don't know how to
>> make the two systems of building llvm-gcc compatible. Is there a FAQ
>> entry on this? If not, I'll add one.
> If we don't know how to fix the problem, maybe we could at least make
> the failures easier to understand.  If someone is trying to build llvm-
> gcc, they will typically not run "make install" as the first step.
> The normal GCC makefile has a default target of "all", so a typical
> GCC build will invoke make with no explicit target  or with a target
> such as "all", "bootstrap", "all-gcc", etc.  We could add those
> targets to the GNUmakefile in a rule that prints a message about
> building with objdir != srcdir.
> It looks to me like Apple's build system will always invoke make with
> an explicit target, so it would be OK to make this new rule be the
> default target.
Good point. I'll investigate to see if that works. Thanks!


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