postgres 7.1.2 with SuSE 7.1

I have a problem when I try to do the postgres.jar (I had installed de 
package ant):

When I write make in the directory 
/usr/src/postgresql-7.0.3/src/interfaces/jdbc/ and I get next message:

builfile ../../../build.xml -Dmajor=7-Dminor=1-Dfullversion=7.1.2 
-def_pgport5432

When I write ant in the directory 
/usr/src/postgresql-7.0.3/src/interfaces/jdbc/  I get the 6 error  messages 
referers to the file: /src/interfaces/jdbc/org/postgresql/Drivers.java from 
129 line to 209 line.

I have jdk1.1.8 and it is in the Path (JAVA_HOME)

Could somebody help me?
Thank you very much.

Ana