blob: fd9c4424166a3f0aba3492367a5a35b895523afd [file] [log] [blame]
#############################################################
## Set up flags based on LOCAL_CXX_STL.
## Input variables: LOCAL_CXX_STL, my_prefix
## Output variables: My_cflags, my_c_includes, my_shared_libraries, etc.
#############################################################
# Select the appropriate C++ STL
ifeq ($(strip $(LOCAL_CXX_STL)),default)
ifndef LOCAL_SDK_VERSION
# Platform code. Select the appropriate STL.
my_cxx_stl := libc++
ifdef LOCAL_IS_HOST_MODULE
ifneq (,$(BUILD_HOST_static))
my_cxx_stl := libc++_static
endif
ifeq ($($(my_prefix)OS),windows)
# libc++ is not supported on mingw.
my_cxx_stl := libstdc++
endif
endif
else
my_cxx_stl := ndk
endif
else
my_cxx_stl := $(strip $(LOCAL_CXX_STL))
ifdef LOCAL_SDK_VERSION
# The NDK has historically used LOCAL_NDK_STL_VARIANT to specify the
# STL. An Android.mk that specifies both LOCAL_CXX_STL and
# LOCAL_SDK_VERSION will incorrectly try (and most likely fail) to use
# the platform STL in an NDK binary. Emit an error to direct the user
# toward the correct option.
#
# Note that we could also accept LOCAL_CXX_STL as an alias for
# LOCAL_NDK_STL_VARIANT (and in fact soong does use the same name), but
# the two options use different names for the STLs.
$(error $(LOCAL_PATH): $(LOCAL_MODULE): Must use LOCAL_NDK_STL_VARIANT rather than LOCAL_CXX_STL for NDK binaries)
endif
ifdef LOCAL_IS_HOST_MODULE
ifeq ($($(my_prefix)OS),windows)
ifneq ($(filter $(my_cxx_stl),libc++ libc++_static),)
# libc++ is not supported on mingw.
my_cxx_stl := libstdc++
endif
endif
endif
endif
# Yes, this is actually what the clang driver does.
linux_dynamic_gcclibs := -lgcc_s -lgcc -lc -lgcc_s -lgcc
linux_static_gcclibs := -Wl,--start-group -lgcc -lgcc_eh -lc -Wl,--end-group
darwin_dynamic_gcclibs := -lc -lSystem
darwin_static_gcclibs := NO_STATIC_HOST_BINARIES_ON_DARWIN
windows_dynamic_gcclibs := \
-lmsvcr110 -lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt -ladvapi32 \
-lshell32 -luser32 -lkernel32 -lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt
windows_static_gcclibs := NO_STATIC_HOST_BINARIES_ON_WINDOWS
my_link_type := dynamic
ifdef LOCAL_IS_HOST_MODULE
ifneq (,$(BUILD_HOST_static))
my_link_type := static
endif
ifeq (-static,$(filter -static,$(my_ldflags)))
my_link_type := static
endif
else
ifeq (true,$(LOCAL_FORCE_STATIC_EXECUTABLE))
my_link_type := static
endif
endif
my_cxx_ldlibs :=
ifneq ($(filter $(my_cxx_stl),libc++ libc++_static),)
my_cflags += -D_USING_LIBCXX
# Note that the structure of this means that LOCAL_CXX_STL := libc++ will
# use the static libc++ for static executables.
ifeq ($(my_link_type),dynamic)
ifeq ($(my_cxx_stl),libc++)
my_shared_libraries += libc++
else
my_static_libraries += libc++_static
endif
else
my_static_libraries += libc++_static
endif
ifdef LOCAL_IS_HOST_MODULE
my_cppflags += -nostdinc++
my_ldflags += -nodefaultlibs
my_ldlibs += -lpthread -lm
my_cxx_ldlibs += $($($(my_prefix)OS)_$(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 += libm libc libdl
else
my_shared_libraries += libdl
endif
endif
else ifeq ($(my_cxx_stl),ndk)
# Using an NDK STL. Handled in binary.mk.
else ifeq ($(my_cxx_stl),libstdc++)
ifndef LOCAL_IS_HOST_MODULE
$(error $(LOCAL_PATH): $(LOCAL_MODULE): libstdc++ is not supported for device modules)
else ifneq ($($(my_prefix)OS),windows)
$(error $(LOCAL_PATH): $(LOCAL_MODULE): libstdc++ is not supported on $($(my_prefix)OS))
endif
else ifeq ($(my_cxx_stl),none)
ifdef LOCAL_IS_HOST_MODULE
my_cppflags += -nostdinc++
my_ldflags += -nodefaultlibs
my_cxx_ldlibs += $($($(my_prefix)OS)_$(my_link_type)_gcclibs)
endif
else
$(error $(LOCAL_PATH): $(LOCAL_MODULE): $(my_cxx_stl) is not a supported STL.)
endif