A question about some Linux's libs ( I hope ) ! - Mailing list pgsql-general

This is the final part of the installation log file that Make install produce:

gcc -I../../include -I../../backend   -O2  -Wall -Wmissing-prototypes -I..   -c
dynloader.c -o dynloader.o
In file included from dynloader.c:24:
../../include/dynloader.h:19: dlfcn.h: No such file or directory
make[2]: *** [dynloader.o] Error 1
make[2]: Leaving directory `/usr/src/pgsql/postgresql-v6.4/src/backend/port'
make[1]: *** [port.dir] Error 2
make[1]: Leaving directory `/usr/src/pgsql/postgresql-v6.4/src/backend'
make: *** [install] Error 2
icaro:/usr/src/pgsql/postgresql-v6.4/src$

I think that my Linux 2.0.35  hasn't the correct version of libs.
May you help me ?

Thanks at all...