php setup with pgsql

[nxrt2003]

Hi, at first my english isn't good. :-(

Well, i tried setup php with postgresql support (--with-pgsql=/var/lib/pgsql ) to mandrake9.1 but after "make" command i am getting this error :

In file included from pgsql.c:29:
php_pgsql.h:32:22: postgres.h: No such file or directory
make[3]: [pgsql.lo] Error 1
make[3]: Leaving directory /usr/local/php-4.0.4/ext/pgsql'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory/usr/local/php-4.0.4/ext/pgsql'
make[1]: [all-recursive] Error 1
make[1]: Leaving directory `/usr/local/php-4.0.4/ext'
make: *** [all-recursive] Error 1

Why am i getting this error? Can you help me?

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