Re: Autoconf/configure

Scott J. Kramer (
Fri, 29 Oct 1999 10:11:45 -1000

On Wed, 27-Oct-1999 @ 17:48, Oliver Rauch wrote:
> Subject: Re: Autoconf/configure
> "Scott J. Kramer" wrote:


> > And sometimes CPPFLAGS=... can be of value to convince `configure'
> > that certain features exist in non-standard places on your system.
> Hi,
> as far as I could see the variable INCLUDES is better than CPPFLAGS,

INCLUDES doesn't show up much in several `configure' scripts I checked
so it's apparently not well supported. I see you've got it in xsane,
with "-I/usr/local/include" unconditionally appended. It's questionable
whether that's correct but it doesn't really matter since it's ignored
if the directory doesn't exist.

> I am not sure if LIBS or LDFLAGS is the right one.

I think intended usage is "LDFLAGS=-llibrary ..." and "LIBS=-Ldir ...",
with inevitable exceptions (details upon request :-). Might also add
"-s" to LDFLAGS and "-Rdir" to LIBS, for example.

The GNU Coding Standards doesn't clarify use of any of these variables.

Here's the `configure' line I used for xsane-0.39:

env CFLAGS=-O2 LDFLAGS=-s LIBS='-L/opt/local/lib -L/opt/local/lib/sane -R/opt/local/lib:/opt/local/lib/sane' ./configure --prefix=/opt/local --disable-static --with-gtk-prefix=/opt/X11

Took a couple tries to get that right. :-)


Scott J. Kramer					LUX Consulting Services
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