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Make multiple rules to generate a file an error 

Pass -w dupbuild=err to ninja to make defining multiple rules to build a
file an error instead of a warning.  Proceeding with the build would
result in undefined behavior, and nobody notices the warning.

Change-Id: Iadac88f8835121a8685bff835acba638100bb654
This commit is contained in:
Colin Cross 2015-09-23 13:52:22 -07:00 committed by Dan Willemsen
parent de4078449f
commit a65f1aee84
1 changed files with 4 additions and 0 deletions
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4
core/ninja.mk
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@ -116,6 +116,10 @@ ifneq (,$(filter showcommands,$(ORIGINAL_MAKECMDGOALS)))
NINJA_ARGS += "-v"
endif
# Make multiple rules to generate the same target an error instead of
# proceeding with undefined behavior.
NINJA_ARGS += -w dupbuild=err
ifdef USE_GOMA
KATI_MAKEPARALLEL := $(MAKEPARALLEL)
# Ninja runs remote jobs (i.e., commands which contain gomacc) with