commit 58238c81443a83922e07b409e54ec93ce909b6ac
author Peter Foley <pefoley2@verizon.net> Sun Jul 31 14:45:40 2011 -0400
committer Michal Marek <mmarek@suse.cz> Wed Aug 31 16:35:56 2011 +0200
tree c4c48f020d1beb57ccd8b3443c870c35ad7e48e0
parent f4b129f519f1bbd191dca2bf17d1137edf941fd1

kbuild: prevent make from deleting _shipped files

commit 7373f4f (kbuild: add implicit rules for parser generation)
created a implicit rule chain (%.c: %.c_shipped: %.y).
Make considers the _shipped files to be intermediate files which
causes them to be deleted if they didn't exist before make was run.
Mark the _shipped files PRECIOUS to prevent make from deleting them.

Signed-off-by: Peter Foley <pefoley2@verizon.net>
Acked-by: Arnaud Lacombe <lacombar@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

scripts/Makefile.lib

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index aeea84a..5d986d9 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -167,6 +167,7 @@
 quiet_cmd_gperf = GPERF $@
       cmd_gperf = gperf -t --output-file $@ -a -C -E -g -k 1,3,$$ -p -t $<
 
+.PRECIOUS: $(src)/%.hash.c_shipped
 $(src)/%.hash.c_shipped: $(src)/%.gperf
 	$(call cmd,gperf)
 
@@ -177,6 +178,7 @@
 quiet_cmd_flex = LEX     $@
       cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $<
 
+.PRECIOUS: $(src)/%.lex.c_shipped
 $(src)/%.lex.c_shipped: $(src)/%.l
 	$(call cmd,flex)
 
@@ -187,12 +189,14 @@
 quiet_cmd_bison = YACC    $@
       cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $<
 
+.PRECIOUS: $(src)/%.tab.c_shipped
 $(src)/%.tab.c_shipped: $(src)/%.y
 	$(call cmd,bison)
 
 quiet_cmd_bison_h = YACC    $@
       cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $<
 
+.PRECIOUS: $(src)/%.tab.h_shipped
 $(src)/%.tab.h_shipped: $(src)/%.y
 	$(call cmd,bison_h)