Index: Makefile.ext
===================================================================
RCS file: /home/pcvs/ports/lang/php5/Makefile.ext,v
retrieving revision 1.79
diff -u -r1.79 Makefile.ext
--- Makefile.ext	15 Apr 2011 14:52:14 -0000	1.79
+++ Makefile.ext	22 Apr 2011 08:40:17 -0000
@@ -194,9 +194,7 @@
 .endif
 
 .if ${PHP_MODNAME} == "odbc"
-LIB_DEPENDS+=	odbc.1:${PORTSDIR}/databases/unixODBC
-
-CONFIGURE_ARGS+=--with-unixODBC=${LOCALBASE}
+OPTIONS=	IODBC "Use the IODBC driver instead of UnixODBC" off
 .endif
 
 .if ${PHP_MODNAME} == "openssl"
@@ -560,3 +558,12 @@
 post-extract:
 	@${MV} ${WRKSRC}/config0.m4 ${WRKSRC}/config.m4
 .endif
+
+.if ${PHP_MODNAME} == "odbc"
+.if defined(WITH_IODBC)
+LIB_DEPENDS+=	iodbc.3:${PORTSDIR}/databases/libiodbc
+.else
+LIB_DEPENDS+=	odbc.1:${PORTSDIR}/databases/unixODBC
+CONFIGURE_ARGS+=--with-unixODBC=${LOCALBASE}
+.endif
+.endif