config_sanitizers.mk revision 4c92a681272519fa17c2b4a8bc807e2e7fe8e974 
1##############################################
2## Perform configuration steps for sanitizers.
3##############################################
4
5my_sanitize := $(strip $(LOCAL_SANITIZE))
6
7# Keep compatibility for LOCAL_ADDRESS_SANITIZER until all targets have moved to
8# `LOCAL_SANITIZE := address`.
9ifeq ($(strip $(LOCAL_ADDRESS_SANITIZER)),true)
10  my_sanitize += address
11endif
12
13# And `LOCAL_SANITIZE := never`.
14ifeq ($(strip $(LOCAL_ADDRESS_SANITIZER)),false)
15  my_sanitize := never
16endif
17
18# Don't apply sanitizers to NDK code.
19ifdef LOCAL_SDK_VERSION
20  my_sanitize := never
21endif
22
23# Configure SANITIZE_HOST.
24ifdef LOCAL_IS_HOST_MODULE
25  ifeq ($(my_sanitize),)
26    my_sanitize := $(strip $(SANITIZE_HOST))
27
28    # SANTIZIZE_HOST=true is a deprecated way to say SANITIZE_HOST=address.
29    ifeq ($(my_sanitize),true)
30      my_sanitize := address
31    endif
32
33    # SANITIZE_HOST is only in effect if the module is already using clang (host
34    # modules that haven't set `LOCAL_CLANG := false` and device modules that
35    # have set `LOCAL_CLANG := true`.
36    ifneq ($(my_clang),true)
37      my_sanitize :=
38    endif
39  endif
40endif
41
42ifeq ($(my_sanitize),never)
43  my_sanitize :=
44endif
45
46# Sanitizers can only be used with clang.
47ifneq ($(my_clang),true)
48  ifneq ($(my_sanitize),)
49    $(error $(LOCAL_PATH): $(LOCAL_MODULE): Use of sanitizers requires LOCAL_CLANG := true)
50  endif
51endif
52
53unknown_sanitizers := $(filter-out address, \
54                      $(filter-out undefined,$(my_sanitize)))
55
56ifneq ($(unknown_sanitizers),)
57  $(error Unknown sanitizers: $(unknown_sanitizers))
58endif
59
60ifneq ($(my_sanitize),)
61  fsanitize_arg := $(subst $(space),$(comma),$(my_sanitize)),
62  my_cflags += -fsanitize=$(fsanitize_arg)
63
64  ifdef LOCAL_IS_HOST_MODULE
65    my_ldflags += -fsanitize=$(fsanitize_arg)
66  endif
67endif
68
69ifneq ($(filter address,$(my_sanitize)),)
70  # Frame pointer based unwinder in ASan requires ARM frame setup.
71  LOCAL_ARM_MODE := arm
72  my_cflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS)
73  my_ldflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS)
74  ifdef LOCAL_IS_HOST_MODULE
75    # -nodefaultlibs (provided with libc++) prevents the driver from linking
76    # libraries needed with -fsanitize=address. http://b/18650275 (WAI)
77    my_ldlibs += -ldl -lpthread
78  else
79    my_shared_libraries += $(ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES)
80    my_static_libraries += $(ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES)
81  endif
82endif
83
84ifneq ($(filter undefined,$(my_sanitize)),)
85  ifdef LOCAL_IS_HOST_MODULE
86    my_ldlibs += -ldl
87  else
88    $(error ubsan is not yet supported on the target)
89  endif
90endif
91