[postgis-devel] autoconf paths

[strk at refractions.net]

In HEAD branch you can find another proposal on configuration.
The bad thing is you can't fully override --datadir, --bindir etc..
due to unavailability of an answer to the question: did user
specify this ? (it only works with --prefix).

Based on presence of --prefix we select pgsql-tight and custom
layout:

If you DONT specify --prefix installation layout will
be like the one used in 1.0.0 and no paths override is possible.

# ./configure 
...
   PREFIX: /extra/pgroot-8.0.0
  EPREFIX: ${prefix}
      DOC: ${prefix}/doc/postgresql/contrib
     DATA: ${prefix}/share/postgresql/contrib
      MAN: ${prefix}/man
      BIN: ${exec_prefix}/bin
      EXT: /home/extra/pgroot-8.0.0/lib/postgresql

If you DO specify --prefix installation will be fully layed out
under that dir, with 'postgis' suffix added to docdir and datadir:

# ./configure --prefix=/tmp/postgis
...
   PREFIX: /tmp/postgis
  EPREFIX: ${prefix}
      DOC: ${prefix}/doc/postgis
     DATA: ${prefix}/share/postgis
      MAN: ${prefix}/man
      BIN: ${exec_prefix}/bin
      EXT: ${exec_prefix}/libexec

You DO can change docdir, datadir, mandir, bindir and libexecdir
(postgis extension lib dir) but you can't remove the 'postgis' prefix
from docdir and datadir:

# ./configure --prefix=/tmp/postgis \
	--datadir=/tmp/postgis_data \
	--with-docdir=/var/www \
	--bindir=/usr/local/bin \
	--libexecdir=/tmp/pgis/mods
...
   PREFIX: /tmp/postgis
  EPREFIX: ${prefix}
      DOC: /var/www/postgis
     DATA: /tmp/postgis_data/postgis
      MAN: ${prefix}/man
      BIN: /usr/local/bin
      EXT: /tmp/pgis/mods


Comments ? Thoughts ?

--strk;
	


On Fri, Apr 15, 2005 at 10:10:57PM +0200, Markus Schaber wrote:
> Hi, Strk,
> 
> strk at refractions.net schrieb:
> >I'm not sure we should keep relying on pgsql layout, although
> >your solution is viable. Actually I was thinking that allowing
> >storage of extension lib itself in a postgis-specific directory
> >would permit using different postgis versions for different
> >databases of the same cluster (does it make any sense?).
> 
> Yes, it does make sense, it is what I do on my developer machines all 
> day. :-)
> 
> Sometimes, it is not possible to migrate one database to a new postgis 
> version because the app is incompatible, but another app that uses a 
> different database relies on the new features.
> 
> So I think the most flexible may be to use the output of "pg_config 
> --configure" by default, but allow both overriding individual parameters 
> via --docdir, --bindir etc. or using --prefix to have everything bundled 
> together in $PREFIX/bin, $PREFIX/lib etc. However, I think this may make 
> the configuring process too complex.
> 
> Markus
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