Makefile: copy contrib/coccinelle/*.cocci to build/

Change the "coccinelle" rule so that we first copy the *.cocci source
in e.g. "contrib/coccinelle/strbuf.cocci" to
".build/contrib/coccinelle/strbuf.cocci" before operating on it.

For now this serves as a rather pointless indirection, but prepares us
for the subsequent commit where we'll be able to inject generated
*.cocci files. Having the entire dependency tree live inside .build/*
simplifies both the globbing we'd need to do, and any "clean" rules.

It will also help for future targets which will want to act on the
generated patches or the logs, e.g. targets to alert if we can't parse
certain files (or, less so than usual) with "spatch", and e.g. a
replacement for "ci/run-static-analysis.sh". Such a replacement won't
care about placing the patches in the in-tree, only whether they're
"OK" (and about the diff).

Signed-off-by: Ævar Arnfjörð Bjarmason <[email protected]>
Signed-off-by: Taylor Blau <[email protected]>

Author: avar

Makefile

@@ -3159,26 +3159,38 @@ check: $(GENERATED_H)
 	fi
 
 COCCI_GLOB = $(wildcard contrib/coccinelle/*.cocci)
-COCCI_RULES = $(COCCI_GLOB)
-COCCI_NAMES = $(COCCI_RULES:contrib/coccinelle/%.cocci=%)
+COCCI_RULES_TRACKED = $(COCCI_GLOB:%=.build/%)
+COCCI_RULES =
+COCCI_RULES += $(COCCI_RULES_TRACKED)
+COCCI_NAMES =
+COCCI_NAMES += $(COCCI_RULES:.build/contrib/coccinelle/%.cocci=%)
 
 COCCICHECK_PENDING = $(filter %.pending.cocci,$(COCCI_RULES))
 COCCICHECK = $(filter-out $(COCCICHECK_PENDING),$(COCCI_RULES))
 
 COCCICHECK_PATCHES = $(COCCICHECK:%=%.patch)
 COCCICHECK_PATCHES_PENDING = $(COCCICHECK_PENDING:%=%.patch)
 
+COCCICHECK_PATCHES_INTREE = $(COCCICHECK_PATCHES:.build/%=%)
+COCCICHECK_PATCHES_PENDING_INTREE = $(COCCICHECK_PATCHES_PENDING:.build/%=%)
+
 # It's expensive to compute the many=many rules below, only eval them
 # on $(MAKECMDGOALS) that match these $(COCCI_RULES)
 COCCI_RULES_GLOB =
 COCCI_RULES_GLOB += cocci%
 COCCI_RULES_GLOB += .build/contrib/coccinelle/%
 COCCI_RULES_GLOB += $(COCCICHECK_PATCHES)
 COCCI_RULES_GLOB += $(COCCICHEC_PATCHES_PENDING)
+COCCI_RULES_GLOB += $(COCCICHECK_PATCHES_INTREE)
+COCCI_RULES_GLOB += $(COCCICHECK_PATCHES_PENDING_INTREE)
 COCCI_GOALS = $(filter $(COCCI_RULES_GLOB),$(MAKECMDGOALS))
 
 COCCI_TEST_RES = $(wildcard contrib/coccinelle/tests/*.res)
 
+$(COCCI_RULES_TRACKED): .build/% : %
+	$(call mkdir_p_parent_template)
+	$(QUIET_CP)cp $< $@
+
 .build/contrib/coccinelle/FOUND_H_SOURCES: $(FOUND_H_SOURCES)
 	$(call mkdir_p_parent_template)
 	$(QUIET_GEN) >$@
@@ -3192,7 +3204,7 @@ define cocci-rule
 # $(1) = e.g. "free.cocci"
 # $(2) = e.g. "grep.c"
 # $(3) = e.g. "grep.o"
-COCCI_$(1:contrib/coccinelle/%.cocci=%) += .build/$(1).patch/$(2)
+COCCI_$(1:.build/contrib/coccinelle/%.cocci=%) += .build/$(1).patch/$(2)
 .build/$(1).patch/$(2): GIT-SPATCH-DEFINES
 .build/$(1).patch/$(2): $(if $(and $(SPATCH_USE_O_DEPENDENCIES),$(wildcard $(3))),$(3),.build/contrib/coccinelle/FOUND_H_SOURCES)
 .build/$(1).patch/$(2): $(1)
@@ -3220,12 +3232,15 @@ endif
 
 define spatch-rule
 
-contrib/coccinelle/$(1).cocci.patch: $$(COCCI_$(1))
+.build/contrib/coccinelle/$(1).cocci.patch: $$(COCCI_$(1))
 	$$(QUIET_SPATCH_CAT)cat $$^ >$$@ && \
 	if test -s $$@; \
 	then \
 		echo '    ' SPATCH result: $$@; \
 	fi
+contrib/coccinelle/$(1).cocci.patch: .build/contrib/coccinelle/$(1).cocci.patch
+	$$(QUIET_CP)cp $$< $$@
+
 endef
 
 ifdef COCCI_GOALS
@@ -3249,11 +3264,11 @@ $(COCCI_TEST_RES_GEN): .build/contrib/coccinelle/tests/%.res : contrib/coccinell
 coccicheck-test: $(COCCI_TEST_RES_GEN)
 
 coccicheck: coccicheck-test
-coccicheck: $(COCCICHECK_PATCHES)
+coccicheck: $(COCCICHECK_PATCHES_INTREE)
 
 # See contrib/coccinelle/README
 coccicheck-pending: coccicheck-test
-coccicheck-pending: $(COCCICHECK_PATCHES_PENDING)
+coccicheck-pending: $(COCCICHECK_PATCHES_PENDING_INTREE)
 
 .PHONY: coccicheck coccicheck-pending
 

shared.mak

@@ -60,6 +60,7 @@ ifndef V
 	QUIET_AR       = @echo '   ' AR $@;
 	QUIET_LINK     = @echo '   ' LINK $@;
 	QUIET_BUILT_IN = @echo '   ' BUILTIN $@;
+	QUIET_CP       = @echo '   ' CP $< $@;
 	QUIET_LNCP     = @echo '   ' LN/CP $@;
 	QUIET_XGETTEXT = @echo '   ' XGETTEXT $@;
 	QUIET_MSGINIT  = @echo '   ' MSGINIT $@;