PostgresInstallation

Hello,
I am trying to install postgresql-6.4.2 on a linux PC (uname -a is
Linux info25.emi.ac.ma 2.0.32 #1 Wed Nov 19 00:46:45 EST 1997 i486
unknown
)
with the procedure described in
www.postgresql.org/docs/admin/install739.htm

I began well, and at step 13 I gmake all with the command
gmake all >& make.log &

I got a make.log with the following (last lines):

gcc -I../../../include -I../../../backend   -O2  -Wall
-Wmissing-prototypes -g -I../..   -c hashscan.c -o hashscan.o
gcc: Internal compiler error: program cc1 got fatal signal 11
gmake[3]: *** [hashscan.o] Error 1
gmake[3]: Leaving directory `/usr/src/pgsql/src/backend/access/hash'
gmake[2]: *** [submake] Error 2
gmake[2]: Leaving directory `/usr/src/pgsql/src/backend/access'
gmake[1]: *** [access.dir] Error 2
gmake[1]: Leaving directory `/usr/src/pgsql/src/backend'
gmake: *** [all] Error 2

so what is wrong with my installation?
Than for your help.

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