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#############################################################
## Set up flags based on LOCAL_CXX_STL.
## Input variables: LOCAL_CXX_STL
## Output variables: My_cflags, my_c_includes, my_shared_libraries, etc.
#############################################################
# Select the appropriate C++ STL
ifeq ($(strip $(LOCAL_CXX_STL)),default)
ifndef LOCAL_SDK_VERSION
# Platform code. Select the appropriate STL.
ifndef USE_MINGW
my_cxx_stl := libc++
ifdef LOCAL_IS_HOST_MODULE
ifneq (,$(BUILD_HOST_static))
my_cxx_stl := libc++_static
endif
endif
else
# libc++ is not supported on mingw.
my_cxx_stl := libstdc++
endif
else
my_cxx_stl := ndk
endif
else
my_cxx_stl := $(strip $(LOCAL_CXX_STL))
endif
# Yes, this is actually what the clang driver does.
HOST_linux_dynamic_gcclibs := -lgcc_s -lgcc -lc -lgcc_s -lgcc
HOST_linux_static_gcclibs := -Wl,--start-group -lgcc -lgcc_eh -lc -Wl,--end-group
HOST_darwin_dynamic_gcclibs := -lc -lSystem
HOST_darwin_static_gcclibs := NO_STATIC_HOST_BINARIES_ON_DARWIN
my_link_type := dynamic
ifdef LOCAL_IS_HOST_MODULE
ifneq (,$(BUILD_HOST_static))
my_link_type := static
endif
ifeq (-static,$(filter -static,$(my_ldflags)))
my_link_type := static
endif
else
ifeq (true,$(LOCAL_FORCE_STATIC_EXECUTABLE))
my_link_type := static
endif
endif
ifneq ($(filter $(my_cxx_stl),libc++ libc++_static),)
my_cflags += -D_USING_LIBCXX
my_c_includes += external/libcxx/include
ifeq ($(my_cxx_stl),libc++)
my_shared_libraries += libc++
else
my_static_libraries += libc++_static
ifndef LOCAL_IS_HOST_MODULE
ifeq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
my_static_libraries += libm libc libdl
endif
endif
endif
ifdef LOCAL_IS_HOST_MODULE
my_cppflags += -nostdinc++
my_ldflags += -nodefaultlibs
my_ldlibs += -lpthread -lm
my_ldlibs += $($(my_prefix)$(HOST_OS)_$(my_link_type)_gcclibs)
else
ifeq (arm,$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH))
my_static_libraries += libunwind_llvm
my_ldflags += -Wl,--exclude-libs,libunwind_llvm.a
endif
ifeq ($(my_link_type),static)
my_static_libraries += libdl
else
my_shared_libraries += libdl
endif
endif
else ifeq ($(my_cxx_stl),ndk)
# Using an NDK STL. Handled in binary.mk.
ifndef LOCAL_IS_HOST_MODULE
my_system_shared_libraries += libstdc++
endif
else ifeq ($(my_cxx_stl),libstdc++)
# Using bionic's basic libstdc++. Not actually an STL. Only around until the
# tree is in good enough shape to not need it.
ifndef LOCAL_IS_HOST_MODULE
my_c_includes += bionic/libstdc++/include
my_system_shared_libraries += libstdc++
endif
# Host builds will use GNU libstdc++.
else ifeq ($(my_cxx_stl),none)
ifdef LOCAL_IS_HOST_MODULE
my_cppflags += -nostdinc++
my_ldflags += -nodefaultlibs
my_ldlibs += $($(my_prefix)$(HOST_OS)_$(my_link_type)_gcclibs)
endif
else
$(error $(LOCAL_PATH): $(LOCAL_MODULE): $(my_cxx_stl) is not a supported STL.)
endif
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