Add a new USES for kernel module ports.

USES=kmod takes no arguments and:
- adds kld to CATEGORIES
- sets SSP_UNSAFE
- sets IGNORE if the kernel sources are not found
- defines KMODDIR to /boot/modules by default, add it to
  PLIST_SUB and MAKE_ENV, and create it upon installation
- handles cross-referencing kernel modules upon installation and
  deinstallation

Approved by:	bapt

1 files changed, 47 insertions, 0 deletions

diff --git a/Mk/Uses/kmod.mk b/Mk/Uses/kmod.mk
new file mode 100644
index 000000000000..b85513e921f7
--- /dev/null
+++ b/Mk/Uses/kmod.mk
@@ -0,0 +1,47 @@
+# $FreeBSD$
+#
+# Handles dependency on kernel sources
+#
+# MAINTAINER: rene@FreeBSD.org
+#
+# Feature:	kmod
+# Usage:	USES=kmod
+# Valid ARGS:	none
+#
+.if !defined(_INCLUDE_USES_KMOD_MK)
+_INCLUDE_USES_KMOD_MK=	yes
+
+.if defined(kmod_ARGS)
+IGNORE=	USES=kmod takes no arguments
+.endif
+
+.if !exists(${SRC_BASE}/sys/Makefile)
+IGNORE=	requires kernel source files in ${SRC_BASE}
+.endif
+
+CATEGORIES+=	kld
+
+SSP_UNSAFE=	kernel module does not support SSP
+
+KMODDIR?=	/boot/modules
+PLIST_SUB+=	KMODDIR="${KMODDIR:C,^/,,}"
+MAKE_ENV+=	KMODDIR="${KMODDIR}" SYSDIR="${SRC_BASE}/sys"
+
+pre-install: kmod-pre-install
+kmod-pre-install:
+.if defined(NO_STAGE)
+	${MKDIR} ${KMODDIR}
+.else
+	${MKDIR} ${STAGEDIR}${KMODDIR}
+.endif
+
+post-install: kmod-post-install
+kmod-post-install:
+	${ECHO_CMD} "@exec /usr/sbin/kldxref ${KMODDIR}"  >> ${TMPPLIST}
+	${ECHO_CMD} "@unexec /usr/sbin/kldxref ${KMODDIR}" >> ${TMPPLIST}
+	${ECHO_CMD} "@dirrmtry ${KMODDIR}" >> ${TMPPLIST}
+.if defined(NO_STAGE)
+	/usr/sbin/kldxref ${KMODDIR}
+.endif
+
+.endif