43e56639c
Mike Frysinger
2016-02-12
Subject
build: add a sanitizer debug option
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Config.in+10 -0
| @@ -688,6 +688,16 @@ config DEBUG_PESSIMIZE | |
| in a much bigger executable that more closely matches the source | |
| code. | |
| + | config DEBUG_SANITIZE |
| + | bool "Enable runtime sanitizers (ASAN/LSAN/USAN/etc...)" |
| + | default n |
| + | help |
| + | Say Y here if you want to enable runtime sanitizers. These help |
| + | catch bad memory accesses (e.g. buffer overflows), but will make |
| + | the executable larger and slow down runtime a bit. |
| + | |
| + | If you aren't developing/testing busybox, say N here. |
| + | |
| config UNIT_TEST | |
| bool "Build unit tests" | |
| default n | |
Makefile.flags+5 -0
| @@ -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 | |