Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> writes:
> Okay, I'll try and expand on this a bit. In order to convert coordinates
> between different coordinate systems, PostGIS uses the external PROJ.4
> library. Now in order to support a certain category of conversion,
> PROJ.4 requires access to a set of library grid reference files which
> are effectively "compiled" from source files into a set of data files as
> part of the build process. The path to this directory of files is then
> built into the DLL at compile time, although it can be overriden with an
> API call.
> Under Linux, this is fairly easy as the files are normally installed
> somewhere under /usr/share/proj, and hence the directory exists at both
> compile-time and run-time.
OK, if the files are normally under /usr/share then it's presumably
kosher to put them under our $sharedir. I guess the only question is
whether you are worried about having two copies in a machine where
PROJ.4 is also installed natively.
regards, tom lane