[OSM-dev] Trouble with osm2pgsql and Postgres 8.4, Postgis 1.4

[Tom Taylor]

On 4 Oct 2009, at 14:31, Jon Burgess wrote:

> Can you see which proj library cs2cs & osm2pgsql are using?
> Something like this:

This seems to be the equivalent tool on OS X:

$ otool -l /usr/local/bin/cs2cs |grep proj
          name /usr/local/Cellar/proj/4.7.0/lib/libproj.0.dylib  
(offset 24)
$ otool -l ./osm2pgsql |grep proj
          name /usr/local/Cellar/proj/4.7.0/lib/libproj.0.dylib  
(offset 24)

> Then if you feel like digging deeper to see what the code for each
> program does when asked to initialize the projections then collect the
> strace output:
>
> $ strace -o /tmp/osm2pgsql.txt -f osm2pgsql great_britain.osm.bz2
> $ strace -o /tmp/cs2cs.txt     -f cs2cs +init=epsg:4326 +to  
> +init=esri.extra:900913
>
> Then compares the output in cs2cs.txt vs osm2pgsql.txt. There will  
> be a
> lot of information in there. Towards the end you should see it opening
> and reading various proj data files from /usr/share/proj (or similar).

Using dtruss, which is pretty much the same, to trace the execution -  
they both just refer to the same library: /usr/local/Cellar/proj/4.7.0/ 
lib/libproj.0.dylib.

I guess I'll give up on it on OS X for the time being. I've got an  
Ubuntu Virtual Machine here which is probably going to be a lot easier!

Thanks for your help Jon - much appreciated.