[GRASS-dev] Building a new module for GRASS6.2.3

[Glynn Clements]

roberto caselli wrote:

> I installed the 6.3.0 version and I try to compile the r.example module with the changes Clements suggest me to have sources with .cc extensions.
> 
> I have this error message, now (I think it depends by the compiler):
> 
> gcc -L/home/roberto/grass/grass-6.3.0RC6/dist.i686-pc-linux-gnu/lib -Wl,--export-dynamic -Wl,-rpath-link,/home/roberto/grass/grass-6.3.0RC6/dist.i686-pc-linux-gnu/lib    -o /home/roberto/grass/grass-6.3.0RC6/dist.i686-pc-linux-gnu/bin/r.example OBJ.i686-pc-linux-gnu/main.o  -lgrass_gis -lgrass_datetime -lz     -lm  -lz 
> OBJ.i686-pc-linux-gnu/main.o:(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
> collect2: ld returned 1 exit status
> make: *** [/home/roberto/grass/grass-6.3.0RC6/dist.i686-pc-linux-gnu/bin/r.example] Error 1
> roberto at roberto-laptop:~/grass/grass-6.3.0RC6/raster/r.example$ 
> 
> I read I should use g++ compiler, but i don't know what I have to change to use it.

Right; you also need to link with $(CXX) rather than $(CC). Putting:

	CC = $(CXX)

into r.example/Makefile is probably the simplest solution.

-- 
Glynn Clements <glynn at gclements.plus.com>