Serialize access to the info/dir file; needed for parallel installs.

Reported by:	scottl

I'm not very fond of using the non-standard lockf(1) here, but I
have no better idea at the moment.  NetBSD uses ln(1) to create a
lock file, but this approach can result in a deadlock if make is
interrupted, leaving an orphaned lock file.

1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile.inc1 b/Makefile.inc1
index 0c270e9..f998063 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -522,7 +522,7 @@ distributeworld installworld: installcheck
 	mkdir -p ${INSTALLTMP}
 	for prog in [ awk cap_mkdb cat chflags chmod chown \
 	    date echo egrep find grep install-info \
-	    ln make mkdir mtree mv pwd_mkdb rm sed sh sysctl \
+	    ln lockf make mkdir mtree mv pwd_mkdb rm sed sh sysctl \
 	    test true uname wc zic; do \
 		cp `which $$prog` ${INSTALLTMP}; \
 	done