[GRASS-user] r.surf.nnbathy add-on

GRASS GRASS user
1

Hi,
more than a question, I just send an advice to whom may be in the same
issue : trying to re-install the r.surf.nnbathy add-on on a recent linux
distro, I met a problem with its compilation against gcc on this step :

        gcc -g -O2 -Wall -pedantic -fno-force-mem -ffloat-store -c
        nncommon-vulnerable.c
        cc1: error: unrecognized command line option "-fno-force-mem"

gcc -dumpversion on my system returned :
        4.4.1
I tried to compile with a former version, and it worked fine :

./configure CC=gcc-4.1
        make

Maciej Sieczka, if you read this, perhaps the hint could be added to
your man page, or the makefile consequently be modified ?

This addon is very usefull to me ; IMHU it should appear as a default
grass command within surface interpolation methods (RST, IDW).

Vincent.

2

Vincent wrote:

more than a question, I just send an advice to whom may be
in the same
issue : trying to re-install the r.surf.nnbathy add-on on a
recent linux
distro, I met a problem with its compilation against gcc on
this step :

        gcc -g -O2 -Wall -pedantic
-fno-force-mem -ffloat-store -c
        nncommon-vulnerable.c
        cc1: error: unrecognized
command line option "-fno-force-mem"

edit the Makefile and remove fno-force-mem from CFLAGS or
wherever it is.
or try the svn version of nnbathy from the google-code project
site.

This addon is very usefull to me ; IMHU it should appear as
a default grass command within surface interpolation methods
(RST, IDW).

unfortunately it can't. It depends on the Triangle library
which is licensed for non-commercial use only, and that is not
compatible with the GPL. So unless someone wants to come forward
and help Pavel replace the delaunay code with something freer,
it will have to remain as an addon. Lots of projects are in the
same situation because the Triangle library is rather good at
what it does.

Hamish