aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--Config.in10
-rw-r--r--Makefile.flags5
2 files changed, 15 insertions, 0 deletions
diff --git a/Config.in b/Config.in
index 07b4bf36b..0a0b5d7cb 100644
--- a/Config.in
+++ b/Config.in
@@ -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
diff --git a/Makefile.flags b/Makefile.flags
index 9f77674ba..65021de25 100644
--- a/Makefile.flags
+++ b/Makefile.flags
@@ -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