gmake command not working

Someone please help!! I trying to install PostgreSQL on my SGI terminal,
which runs IRIX 6.5.4. When I execute the 'gmake' command(from the
'~/postgresql/postgresql-7.0.2/src' directory), the following prints to
the console:

gmake -C utils all
gmake[1]: Entering directory
`/tmp_mnt/space/sturban/postgres/postgresql-7.0.2/src/utils'
gcc -I../include -I../backend -U_NO_XOPEN4 -woff
1164,1171,1185,1195,1552 -Wl,-woff,15 -Wl,-woff,84 -Wall
-Wmissing-prototypes -Wmissing-declarations -c -o version.o version.c
gcc: cannot specify -o with -c or -S and multiple compilations
gmake[1]: *** [version.o] Error 1
gmake[1]: Leaving directory
`/tmp_mnt/space/sturban/postgres/postgresql-7.0.2/src/utils'
gmake: *** [all] Error 2

Can anybody tell me what I am doing wrong? I am not familiar with the
'gmake' program, and none of the internet sites I found could help me
out with this. Please let me know if you have some information.
-Thanks,
Stuart Urban