Re: Using LLVM with Autotools

[Russell Wallace]

In this case I'm the one who has to write configure.ac and Makefile.am so I
need to find out what the answers need to be. But I see what you're saying,
that it's at least theoretically possible to do the whole job on the
./configure command line. That would make said command line a bit long and
unwieldy, having to invoke the full path to llvm-config twice (once to get
compiler flags, once to get linker flags). Is there a way to abbreviate
this, by putting something into configure.ac or Makefile.am or otherwise?

On Thu, Mar 24, 2016 at 4:33 PM, Gavin Smith <address@hidden>
wrote:

> On 24 March 2016 at 15:05, Russell Wallace <address@hidden>
> wrote:
> > I'm writing a C++ program that needs to compile and link with LLVM, and
> > trying to figure out how to build it with autotools.
> >
> > The good news is, llvm-config will supply the relevant compiler and
> linker
> > flags.
>
> Is llvm-config hardcoded into configure.ac or Makefile.am, or is
> configure being invoked like "./configure CC=llvm "CFLAGS=`llvm-config
> --cflags`" or whatever it is? If it's the latter it should be easy to
> give the path to the correct llvm-config.
>