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build: add a sanitizer debug option

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Building & running with ASAN is super helpful, so add a dedicated config
knob for it.  This way people don't have to guess at the right compiler
settings in order to get a good build.  We can just tell people to enable
this one option.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2016-02-12 22:12:47 -05:00
parent 8efcc9589b
commit 43e56639c6
2 changed files with 15 additions and 0 deletions
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5
Makefile.flags
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@ -75,6 +75,11 @@ else
CFLAGS += $(call cc-option,-Os,$(call cc-option,-O2,))
endif
endif
ifeq ($(CONFIG_DEBUG_SANITIZE),y)
CFLAGS += $(call cc-option,-fsanitize=address,)
CFLAGS += $(call cc-option,-fsanitize=leak,)
CFLAGS += $(call cc-option,-fsanitize=undefined,)
endif
# If arch/$(ARCH)/Makefile did not override it (with, say, -fPIC)...
ARCH_FPIC ?= -fpic