[bgl-discuss] A working BGL Makefile for C code

[Chad Glendenin <chad@xxxxxxxxxxx>]

Could somebody post or mail me the relevant parts of a Makefile that
successfully compiles C code with MPI on BGL using XLC (or GCC, if it
still works)? Thanks.

I tried following the earlier discussion about xlc, but I've had no luck
using it. I also tried using what I found on the BGL Wiki
(http://www.bgl.mcs.anl.gov/wiki/index.php/ApplicationWorkshop), but I
can't seem to link with MPI. I'm trying to use blrts_xlc from the $PATH
(which is /opt/ibmcmp/vac/7.0/bin/blrts_xlc), and everything else from
/bgl/BlueLight/ppcfloor. Is this correct? Could there be something missing
in my environment (since I'm using bash instead of csh)?

chad@login2:~/src/vol> make
blrts_xlc -g -O -qarch=440 -qmaxmem=64000
-I/bgl/BlueLight/ppcfloor/bglsys/include -L.
-L/bgl/BlueLight/ppcfloor/bglsys/lib -lmpich.rts -lmsglayer.rts -lrts.rts
-ldevices.rts  -c vol.c

[ similarly for util.c, vector.c, file.c, and render.c ]

blrts_xlc -L/bgl/BlueLight/ppcfloor/bglsys/lib -lmpich.rts -lmsglayer.rts
-lrts.rts -ldevices.rts  vol.o util.o vector.o file.o render.o -o vol
vol.o: In function `main':
/bgl/home1/chad/src/vol/vol.c:573: undefined reference to `MPI_Init'
vol.o: In function `finalize':
/bgl/home1/chad/src/vol/vol.c:526: undefined reference to `MPI_Finalize'
vol.o: In function `init':
/bgl/home1/chad/src/vol/vol.c:63: undefined reference to `MPI_Comm_size'
/bgl/home1/chad/src/vol/vol.c:66: undefined reference to `MPI_Comm_rank'
/bgl/home1/chad/src/vol/vol.c:102: undefined reference to
`MPI_Cart_create'
/bgl/home1/chad/src/vol/vol.c:105: undefined reference to `MPI_Comm_rank'
/bgl/home1/chad/src/vol/vol.c:106: undefined reference to
`MPI_Cart_coords'

[ et cetera ]

Thanks,
ccg

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