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-rw-r--r--sys/modules/sr/Makefile11
1 files changed, 10 insertions, 1 deletions
diff --git a/sys/modules/sr/Makefile b/sys/modules/sr/Makefile
index 7b173ab26ad1..b49d21edbdbe 100644
--- a/sys/modules/sr/Makefile
+++ b/sys/modules/sr/Makefile
@@ -4,5 +4,14 @@
KMOD = if_sr
SRCS = if_sr.c if_sr_isa.c if_sr_pci.c
SRCS += device_if.h bus_if.h pci_if.h isa_if.h opt_netgraph.h
-
+
+NETGRAPH?= 0
+
+opt_netgraph.h:
+.if ${NETGRAPH} != 0
+ echo "#define NETGRAPH ${NETGRAPH}" > opt_netgraph.h
+.else
+ echo "" > opt_netgraph.h
+.endif
+
.include <bsd.kmod.mk>