--without-projdir not working (Tools build still requires too much)

[robe]

I was trying to do this on a system that does not have geos dev or proj dev installed.

./configure --without-pgconfig

and I can't tells me I need those.

I installed geosdevl and tried to get away without proj dev

./configure --without-pgconfig --without-projdir

and get

configure: error: the --with-projdir directory "no" cannot be found

shp2pgsql doesn't require geos or proj, so we should allow building without those if user choose --without-pgconfig

[robe]

Okay possible maybe nothing can be done with proj or geos since we are pulling in liblwgeom, but I shouldn't have to explicitly says --without-protobuf

I ended up with this cause all I needed was shp2pgsl

apt install automake autoconf libtool libgeos-dev libproj-dev
./configure --without-pgconfig --without-protobuf --without-raster

[strk]

This is similar to the --without-gui issue reported in #5541

[strk]

The loader tool uses liblwgeom and in turn liblwgeom required libproj at the moment. Allowing a libproj-less build of liblwgeom would be required to implement this enhancement. It strikes me that conditional libproj was a thing in the remote past of PostGIS and someone wanted to remove that optionality ...

[strk]

WIP PR: ​https://git.osgeo.org/gitea/postgis/postgis/pulls/164

won't go far unless we define what to do if proj is diabled (only build what's possible to build without it ?)

[strk]

Specifically: liblwgeom currently requires proj, for example: liblwgeom/lwspheroid.c:149: undefined reference to `geod_init'

Should those parts of liblwgeom be made unavailable when building without proj ?