Re: need to set ACLOCAL_AMFLAGS along with AC_CONFIG_MACRO_DIR

[Eric Blake]

[adding bug-automake]

On 09/15/2010 12:59 PM, Ralf Wildenhues wrote:
> Hello,
>
> * Eric Blake wrote on Wed, Sep 15, 2010 at 04:15:13PM CEST:
> > On 09/15/2010 04:37 AM, langdead wrote:
> > > Whether does "ACLOCAL_AMFLAGS= -I @path" only work for "Makefile.am"?
> >
> > In the context of autoreconf (the only part of the equation
> > belonging to autoconf), we merely call aclocal without grepping for
> > ACLOCAL_AMFLAGS,
>
> That's not true.  autoreconf.in:autoreconf_current_directory
> greps for /^ACLOCAL_[A-Z_]*FLAGS\s*=\s*(.*)/

Ah - I missed the regex (I was searching for a literal ACLOCAL_AMFLAGS, 
and didn't realize that it would be hidden behind a regex).  Thanks for 
correcting me.

> so it really only works with autoreconf to put literal stuff in that
> line.
>
> When aclocal is run from make, as triggered by the automake-generated
> rule, $(ACLOCAL_AMFLAGS) undergoes usual make expansion of course.

At any rate, it seems like maintaining ACLOCAL_AMFLAGS in Makefile.am is 
redundant - how hard is it to teach automake to have aclocal 
_automatically_ include directories mentioned inside 
AC_CONFIG_MACRO_DIR, to avoid the dual file maintenance headache?

--
Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library http://libvirt.org