unable to create postgresql.jar

Hi,
I am new to postgresql and need some help in
creating jdbc driver.I installed ant and went to
/src/interfaces/jdbc directory and type make but i got
the following error:
Buildfile: ./build.xml

all:

prepare:

check_versions:

driver:
[echo] Configured build for the JDBC2 Enterprise
edition driver

compile:
[javac] Compiling 53 source files to
/usr/local/postgresql-7.2.1/src/interfaces/jdbc/build
[javac]
/usr/local/postgresql-7.2.1/src/interfaces/jdbc/org/postgresql/Driver.java:234:
';' expected
[javac] return ${major};
[javac] ^
[javac]
/usr/local/postgresql-7.2.1/src/interfaces/jdbc/org/postgresql/Driver.java:244:
';' expected

and BUILD FAILED at the end

Does that mean there is some problem with built file.
PLease reply so i can proceed
Thanks,
Amit

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