cxx_stl_setup.mk revision 0a4122a4f28b00e9e575c9aa6d6020ec40dd35ac
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############################################################# 6 7# Select the appropriate C++ STL 8ifeq ($(strip $(LOCAL_CXX_STL)),default) 9 ifndef LOCAL_SDK_VERSION 10 # Platform code. Select the appropriate STL. 11 ifndef USE_MINGW 12 my_cxx_stl := libc++ 13 ifdef LOCAL_IS_HOST_MODULE 14 ifneq (,$(BUILD_HOST_static)) 15 my_cxx_stl := libc++_static 16 endif 17 endif 18 else 19 # libc++ is not supported on mingw. 20 my_cxx_stl := libstdc++ 21 endif 22 else 23 my_cxx_stl := ndk 24 endif 25else 26 my_cxx_stl := $(strip $(LOCAL_CXX_STL)) 27endif 28 29# Yes, this is actually what the clang driver does. 30HOST_linux_dynamic_gcclibs := -lgcc_s -lgcc -lc -lgcc_s -lgcc 31HOST_linux_static_gcclibs := -Wl,--start-group -lgcc -lgcc_eh -lc -Wl,--end-group 32HOST_darwin_dynamic_gcclibs := -lc -lSystem 33HOST_darwin_static_gcclibs := NO_STATIC_HOST_BINARIES_ON_DARWIN 34 35my_link_type := dynamic 36ifdef LOCAL_IS_HOST_MODULE 37 ifneq (,$(BUILD_HOST_static)) 38 my_link_type := static 39 endif 40 ifeq (-static,$(filter -static,$(my_ldflags))) 41 my_link_type := static 42 endif 43else 44 ifeq (true,$(LOCAL_FORCE_STATIC_EXECUTABLE)) 45 my_link_type := static 46 endif 47endif 48 49ifneq ($(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++ 54 else 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 59 endif 60 endif 61 endif 62 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) 68 else 69 ifeq (arm,$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) 70 my_static_libraries += libunwind_llvm 71 endif 72 73 ifeq ($(my_link_type),static) 74 my_static_libraries += libdl 75 else 76 my_shared_libraries += libdl 77 endif 78 endif 79else ifeq ($(my_cxx_stl),ndk) 80 # Using an NDK STL. Handled in binary.mk. 81 ifndef LOCAL_IS_HOST_MODULE 82 my_system_shared_libraries += libstdc++ 83 endif 84else ifeq ($(my_cxx_stl),libstdc++) 85 # Using bionic's basic libstdc++. Not actually an STL. Only around until the 86 # tree is in good enough shape to not need it. 87 ifndef LOCAL_IS_HOST_MODULE 88 my_c_includes += bionic/libstdc++/include 89 my_system_shared_libraries += libstdc++ 90 endif 91 # Host builds will use GNU libstdc++. 92else ifeq ($(my_cxx_stl),none) 93 ifdef LOCAL_IS_HOST_MODULE 94 my_cppflags += -nostdinc++ 95 my_ldflags += -nodefaultlibs 96 my_ldlibs += $($(my_prefix)$(HOST_OS)_$(my_link_type)_gcclibs) 97 endif 98else 99 $(error $(LOCAL_PATH): $(LOCAL_MODULE): $(my_cxx_stl) is not a supported STL.) 100endif 101