Re: have headers & libs, but cannot configure/make

[Mike Miller]

On Fri, Jan 06, 2017 at 10:41:06 -0500, John W. Eaton wrote:
> On 01/06/2017 10:18 AM, Mike Miller wrote:
> > On Fri, Jan 06, 2017 at 09:55:44 -0500, John W. Eaton wrote:
> > > On 01/05/2017 02:37 PM, Mike Miller wrote:
> 
> > > Does it work now for linking your pcre library?
> > 
> > I don't think it will, because it doesn't take PCRE_CPPFLAGS into
> > account when testing for the presence of pcre.h.
> 
> Oh.  Oops.
> 
> > Why not use OCTAVE_CHECK_LIB for consistency?
> 
> We could do that, but I thought we were aiming to use pkg-config.
> 
> There are a few other cases where we use PKG_CHECK_MODULE to get FOO_CFLAGS
> and FOO_LIBS, then we set FOO_CPPFLAGS=$FOO_CFLAGS.  Ugh.
> 
> I would prefer setting -I options (only) in CPPFLAGS, -L options (only) in
> LDFLAGS, and the -llibfoo in FOO_LIBS.  So yeah, maybe we should be using
> OCTAVE_CHECK_LIB, possibly modified to use pkg-config if pkg-config has info
> for the library we are looking for?

OCTAVE_CHECK_LIB already uses pkg-config (since July 2016) and already
takes care of all of what you mention. I even added an argument to allow
the name of the library (what Octave calls the library) to differ from
the name of the .pc file (see e.g. portaudio).

-- 
mike