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-rw-r--r--Makefile6
1 files changed, 6 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 2add9f1..492064c 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,8 @@ all: exman ${SYSTEMS}
 
 .SUFFIXES: .tar .url
 
+.PRECIOUS: ${SYSTEMS:=.tar}
+
 .url.tar:
 	${CURL} -f -o $@ "$$(cat $<)"
 
@@ -22,11 +24,15 @@ all: exman ${SYSTEMS}
 	mkdir -p $@
 	${TAR} -x -f $< -C $@ --strip-components ${STRIP.$@} ${FILES.$@}
 
+.PRECIOUS: netbsd-man.tar netbsd-comp.tar
+
 netbsd: netbsd-man.tar netbsd-comp.tar
 	mkdir -p $@
 	${TAR} -x -f netbsd-man.tar -C $@ --strip-components ${STRIP.$@} ${FILES.$@}
 	${TAR} -x -f netbsd-comp.tar -C $@ --strip-components ${STRIP.$@} ${FILES.$@}
 
+.PRECIOUS: openbsd-man.tar openbsd-comp.tar
+
 openbsd: openbsd-man.tar openbsd-comp.tar
 	mkdir -p $@
 	${TAR} -x -f openbsd-man.tar -C $@ --strip-components ${STRIP.$@} ${FILES.$@}