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Re: [Libguestfs] [hivex] OS X: Augment pkg-config search path



On Jun 11, 2012, at 02:26 , Richard W.M. Jones wrote:

> On Fri, Jun 08, 2012 at 03:20:28PM -0700, Alex Nelson wrote:
>> Hello all,
>> 
>> I found OS X still has one remaining issue in the autotools.  OS X does not include pkg-config by default, and whatever mechanism installs it places pkg.m4 in some location among:
>> 
>> /opt/local/share/aclocal/pkg.m4
>> /usr/local/share/aclocal/pkg.m4
>> 
>> PKG_CHECK_MODULES isn't defined if pkg.m4 isn't in /usr/share/aclocal, so ./configure dies without augmenting aclocal's search path.
>> 
>> My question:  What is the proper way to augment this path?  I see two options available, one at the top of hivex/Makefile.am:
>> ACLOCAL_AMFLAGS = -I m4 -I /opt/local/share/aclocal
> 
> If that works, then how about either:
> 
>  aclocal -I /opt/local/share/aclocal
> 
> or:
> 
>  make ACLOCAL_AMFLAGS="-I /opt/local/share/aclocal"
I went with the former.  I've included the pkgm4dir variable I noted below, and tested it in FC15 and OS X 10.7.
> 
>> And one at the bottom of hivex/bootstrap:
>> AUTOPOINT=true LIBTOOLIZE=true autoreconf --verbose -I /opt/local/share/aclocal --install
>> 
>> I just hard-coded one path into those example lines, as I'm simply not sure what the PATH variable I should use is.  aclocal dies if a non-existent path component is passed with -I.  If I understand correctly, PKG_CONFIG_PATH doesn't appear to be used for finding the base pkg-config macros.
>> 
>> I can somewhat find the path in bootstrap with this clunky line:
>> pkgm4dir=$(test -f /opt/local/share/aclocal/pkg.m4 && dirname /opt/local/share/aclocal/pkg.m4)||$(test -f /usr/local/share/aclocal/pkg.m4 && dirname /usr/local/share/aclocal/pkg.m4)||$(test -f /usr/share/aclocal/pkg.m4 && dirname /usr/share/aclocal/pkg.m4)
>> 
>> But I suspect there's a better way.  Can someone help with what this would be?
> 
> Rich.
> 
> -- 
> Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
> virt-top is 'top' for virtual machines.  Tiny program with many
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