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Bug 1353640 - Use more targetted vpath instead of broad VPATH for preprocessor rules. r=mshal

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VPATH applies to everything, but vpath applies to files matching the
pattern it's given.

--HG--
extra : rebase_source : 17339820e34f4d2f3d4ddde1a8a4325e92bfdb9e
This commit is contained in:
Mike Hommey 2017-04-05 16:36:24 +09:00
parent 9939009c87
commit 91b701d7c6
1 changed files with 5 additions and 4 deletions
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9
config/rules.mk
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@ -1021,15 +1021,16 @@ ifneq (,$(filter %.i,$(MAKECMDGOALS)))
# This way we can match both 'make sub/bar.i' and 'make bar.i'
_group_srcs = $(sort $(patsubst %.$1,%.i,$(filter %.$1,$2 $(notdir $2))))
# Hack up VPATH so we can reach the sources. Eg: 'make Parser.i' may need to
# reach $(srcdir)/frontend/Parser.i
VPATH += $(addprefix $(srcdir)/,$(sort $(dir $(CPPSRCS) $(CSRCS) $(CMMSRCS))))
define PREPROCESS_RULES
_PREPROCESSED_$1_FILES := $$(call _group_srcs,$1,$$($2))
# Make preprocessed files PHONY so they are always executed, since they are
# manual targets and we don't necessarily write to $@.
.PHONY: $$(_PREPROCESSED_$1_FILES)
# Hack up VPATH so we can reach the sources. Eg: 'make Parser.i' may need to
# reach $(srcdir)/frontend/Parser.i
vpath %.$1 $$(addprefix $$(srcdir)/,$$(sort $$(dir $$($2))))
$$(_PREPROCESSED_$1_FILES): _DEPEND_CFLAGS=
$$(_PREPROCESSED_$1_FILES): %.i: %.$1
$$(REPORT_BUILD_VERBOSE)