diff -ruN /usr/ports/devel/gdb6/Makefile gdb6/Makefile
--- /usr/ports/devel/gdb6/Makefile	Sun Aug 22 23:34:48 2004
+++ gdb6/Makefile	Thu Aug 26 16:38:33 2004
@@ -35,7 +35,9 @@
 .include <bsd.port.pre.mk>
 
 .if ${OSVERSION} < 500000
-BROKEN=		"Does not compile on 4.x"
+LIB_DEPENDS=	readline.4:${PORTSDIR}/devel/readline
+USE_GCC?=3.4
+CFLAGS+=	-Wl,--rpath -Wl,${PREFIX}/lib
 .endif
 
 .if ${ARCH} == "amd64"
diff -ruN /usr/ports/devel/gdb6/files/kvm-fbsd-alpha.h gdb6/files/kvm-fbsd-alpha.h
--- /usr/ports/devel/gdb6/files/kvm-fbsd-alpha.h	Sun Jun 20 15:22:02 2004
+++ gdb6/files/kvm-fbsd-alpha.h	Thu Aug 26 16:16:01 2004
@@ -50,7 +50,7 @@
   deprecated_registers_fetched ();
 }
 
-
+#if __FreeBSD_version >= 500032
 CORE_ADDR
 fbsd_kern_frame_saved_pc (struct frame_info *fi)
 {
@@ -77,3 +77,4 @@
       return (this_saved_pc);
     }
 }
+#endif
diff -ruN /usr/ports/devel/gdb6/files/kvm-fbsd-amd64.h gdb6/files/kvm-fbsd-amd64.h
--- /usr/ports/devel/gdb6/files/kvm-fbsd-amd64.h	Mon Aug 23 16:12:31 2004
+++ gdb6/files/kvm-fbsd-amd64.h	Thu Aug 26 16:16:54 2004
@@ -55,6 +55,7 @@
    but we don't think that's too important right now.  */
 enum frametype { tf_normal, tf_trap, tf_interrupt, tf_syscall };
 
+#if __FreeBSD_version >= 500032
 CORE_ADDR
 fbsd_kern_frame_saved_pc (struct frame_info *fi)
 {
@@ -98,6 +99,7 @@
 #undef oEIP
     }
 }
+#endif
 
 static void
 fetch_kcore_registers (struct pcb *pcb)
diff -ruN /usr/ports/devel/gdb6/files/kvm-fbsd-i386.h gdb6/files/kvm-fbsd-i386.h
--- /usr/ports/devel/gdb6/files/kvm-fbsd-i386.h	Mon Aug 23 16:12:31 2004
+++ gdb6/files/kvm-fbsd-i386.h	Thu Aug 26 16:06:52 2004
@@ -56,6 +56,7 @@
    but we don't think that's too important right now.  */
 enum frametype { tf_normal, tf_trap, tf_interrupt, tf_syscall };
 
+#if __FreeBSD_version >= 500032
 CORE_ADDR
 fbsd_kern_frame_saved_pc (struct frame_info *fi)
 {
@@ -99,6 +100,7 @@
 #undef oEIP
     }
 }
+#endif
 
 static void
 fetch_kcore_registers (struct pcb *pcb)
diff -ruN /usr/ports/devel/gdb6/files/kvm-fbsd-sparc64.h gdb6/files/kvm-fbsd-sparc64.h
--- /usr/ports/devel/gdb6/files/kvm-fbsd-sparc64.h	Mon Aug 23 16:12:31 2004
+++ gdb6/files/kvm-fbsd-sparc64.h	Thu Aug 26 16:17:36 2004
@@ -51,6 +51,7 @@
     regcache_raw_supply (current_regcache, i + SPARC_I0_REGNUM, &top.fr_in[i]);
 }
 
+#if __FreeBSD_version >= 500032
 CORE_ADDR
 fbsd_kern_frame_saved_pc (struct frame_info *fi)
 {
@@ -96,3 +97,4 @@
     }
   return (pc);
 }
+#endif