instalation problems!

Hello,
I tried to install PstgreSQL 7.1.1, and I got these error log:

gmake[3]: Leaving directory
`/users/noorbakh/postgreSQL/postgresql-7.1.1/src/backend/tcop'
gmake -C utils all
gmake[3]: Entering directory
`/users/noorbakh/postgreSQL/postgresql-7.1.1/src/backend/utils'
gmake -C adt SUBSYS.o
gmake[4]: Entering directory
`/users/noorbakh/postgreSQL/postgresql-7.1.1/src/backend/utils/adt'
gcc -Wall -Wmissing-prototypes -Wmissing-declarations -mieee
-I../../../../src/include -c acl.c -o acl.o
cc1: Invalid option `ieee'
gmake[4]: *** [acl.o] Error 1
gmake[4]: Leaving directory
`/users/noorbakh/postgreSQL/postgresql-7.1.1/src/backend/utils/adt'
gmake[3]: *** [adt-recursive] Error 2
gmake[3]: Leaving directory
`/users/noorbakh/postgreSQL/postgresql-7.1.1/src/backend/utils'
gmake[2]: *** [utils-recursive] Error 2
gmake[2]: Leaving directory
`/users/noorbakh/postgreSQL/postgresql-7.1.1/src/backend'
gmake[1]: *** [all] Error 2
gmake[1]: Leaving directory
`/users/noorbakh/postgreSQL/postgresql-7.1.1/src'
gmake: *** [all] Error 2

Can you explain me, how I can solve the problem?

Thanks in advance,
Fariba