Mark port as depending on kernel

svn path=/head/; revision=107231

sysutils/pmap/Makefile

@@ -13,6 +13,8 @@ MASTER_SITES=	ftp://ftp.wuppy.net.ru/pub/FreeBSD/local/pmap/
 MAINTAINER=	skv@FreeBSD.org
 COMMENT=	Detailed process memory display
 
+NO_PACKAGE=	Depends on kernel
+
 PLIST_SUB=	KMODDIR=${KMODDIR}
 WRKSRC=		${WRKDIR}/${PORTNAME}
 
@@ -29,4 +31,12 @@ BROKEN=		"Currently does not support -CURRENT"
 IGNORE=		"Not supported on systems prior to 4.5"
 .endif
 
+pre-fetch:
+.if !exists(${SRC_BASE}/sys/Makefile)
+IGNORE=		"This port requires kernel sources"
+.endif
+
+post-install:
+	@${CAT} ${PKGMESSAGE}
+
 .include <bsd.port.post.mk>

sysutils/pmap/pkg-message

@@ -0,0 +1,6 @@
+
+*******************************************************************************
+* This port contains a prebuilt kernel module. Due to the ever changing       *
+* nature of FreeBSD it may be necessary to rebuild the module after a kernel  *
+* source update.  To do this reinstall the port.                              *
+*******************************************************************************