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-rw-r--r--sys/modules/rc/Makefile2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/modules/rc/Makefile b/sys/modules/rc/Makefile
index 9cc8f03..cc8d228 100644
--- a/sys/modules/rc/Makefile
+++ b/sys/modules/rc/Makefile
@@ -5,7 +5,9 @@
KMOD= rc
SRCS= rc.c device_if.h bus_if.h isa_if.h opt_tty.h
+.if !defined(KERNBUILDDIR)
opt_tty.h:
echo "#define TTYHOG 8192" >opt_tty.h
+.endif
.include <bsd.kmod.mk>
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