1 #############################################################
2 ## Set up flags based on LOCAL_CXX_STL.
3 ## Input variables: LOCAL_CXX_STL
4 ## Output variables: My_cflags, my_c_includes, my_shared_libraries, etc.
5 #############################################################
7 # Select the appropriate C++ STL
8 ifeq ($(strip $(LOCAL_CXX_STL)),default)
9 ifndef LOCAL_SDK_VERSION
10 # Platform code. Select the appropriate STL.
13 ifdef LOCAL_IS_HOST_MODULE
14 ifneq (,$(BUILD_HOST_static))
15 my_cxx_stl := libc++_static
19 # libc++ is not supported on mingw.
20 my_cxx_stl := libstdc++
26 my_cxx_stl := $(strip $(LOCAL_CXX_STL))
29 # Yes, this is actually what the clang driver does.
30 HOST_linux_dynamic_gcclibs := -lgcc_s -lgcc -lc -lgcc_s -lgcc
31 HOST_linux_static_gcclibs := -Wl,--start-group -lgcc -lgcc_eh -lc -Wl,--end-group
32 HOST_darwin_dynamic_gcclibs := -lc -lSystem
33 HOST_darwin_static_gcclibs := NO_STATIC_HOST_BINARIES_ON_DARWIN
35 my_link_type := dynamic
36 ifdef LOCAL_IS_HOST_MODULE
37 ifneq (,$(BUILD_HOST_static))
38 my_link_type := static
40 ifeq (-static,$(filter -static,$(my_ldflags)))
41 my_link_type := static
44 ifeq (true,$(LOCAL_FORCE_STATIC_EXECUTABLE))
45 my_link_type := static
49 ifneq ($(filter $(my_cxx_stl),libc++ libc++_static),)
50 my_cflags += -D_USING_LIBCXX
51 my_c_includes += external/libcxx/include
52 ifeq ($(my_cxx_stl),libc++)
53 my_shared_libraries += libc++
55 my_static_libraries += libc++_static
56 ifndef LOCAL_IS_HOST_MODULE
57 ifeq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
58 my_static_libraries += libm libc libdl
63 ifdef LOCAL_IS_HOST_MODULE
64 my_cppflags += -nostdinc++
65 my_ldflags += -nodefaultlibs
66 my_ldlibs += -lpthread -lm
67 my_ldlibs += $($(my_prefix)$(HOST_OS)_$(my_link_type)_gcclibs)
69 ifeq (arm,$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH))
70 my_static_libraries += libunwind_llvm
71 my_ldflags += -Wl,--exclude-libs,libunwind_llvm.a
74 ifeq ($(my_link_type),static)
75 my_static_libraries += libdl
77 my_shared_libraries += libdl
80 else ifeq ($(my_cxx_stl),ndk)
81 # Using an NDK STL. Handled in binary.mk.
82 ifndef LOCAL_IS_HOST_MODULE
83 my_system_shared_libraries += libstdc++
85 else ifeq ($(my_cxx_stl),libstdc++)
86 # Using bionic's basic libstdc++. Not actually an STL. Only around until the
87 # tree is in good enough shape to not need it.
88 ifndef LOCAL_IS_HOST_MODULE
89 my_c_includes += bionic/libstdc++/include
90 my_system_shared_libraries += libstdc++
92 # Host builds will use GNU libstdc++.
93 else ifeq ($(my_cxx_stl),none)
94 ifdef LOCAL_IS_HOST_MODULE
95 my_cppflags += -nostdinc++
96 my_ldflags += -nodefaultlibs
97 my_ldlibs += $($(my_prefix)$(HOST_OS)_$(my_link_type)_gcclibs)
100 $(error $(LOCAL_PATH): $(LOCAL_MODULE): $(my_cxx_stl) is not a supported STL.)