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NDK_ROOT := $(shell dirname $(CC))/../../../../..
ifeq "$(HOST_OS)" "Linux"
HOST_TAG := linux-x86_64
else ifeq "$(HOST_OS)" "Darwin"
HOST_TAG := darwin-x86_64
else
HOST_TAG := windows-x86_64
endif
TOOLCHAIN_ROOT := $(NDK_ROOT)/toolchains/llvm/prebuilt/$(HOST_TAG)
TOOLCHAIN_SYSROOT := $(TOOLCHAIN_ROOT)/sysroot
OBJCOPY ?= $(TOOLCHAIN_ROOT)/bin/llvm-objcopy
ARCHIVER ?= $(TOOLCHAIN_ROOT)/bin/llvm-ar
ifeq "$(wildcard $(TOOLCHAIN_SYSROOT)/.)" ""
# Compiling test inferiors for Android requires an NDK with the unified
# toolchain introduced in version r19.
$(error "No unified toolchain sysroot found in $(NDK_ROOT). NDK must be r19 or later.")
endif
ifeq "$(ARCH)" "arm"
TRIPLE := armv7-none-linux-androideabi
ARCH_CFLAGS += -march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16 -marm
else ifeq "$(ARCH)" "aarch64"
TRIPLE := aarch64-none-linux-android
else ifeq "$(ARCH)" "i386"
TRIPLE := i686-none-linux-android
else
TRIPLE := $(ARCH)-none-linux-android
endif
# lowest 64-bit API level
API_LEVEL := 21
ifeq "$(ARCH)" "arm"
ARCH_DIR := arm-linux-androideabi
else
ARCH_DIR := $(subst -none,,$(TRIPLE))
endif
ARCH_CFLAGS += \
--target=$(TRIPLE) \
--sysroot=$(TOOLCHAIN_SYSROOT) \
-D__ANDROID_API__=$(API_LEVEL)
ARCH_CXXFLAGS += \
-isystem $(TOOLCHAIN_SYSROOT)/usr/include/c++/v1
ARCH_LDFLAGS += \
--target=$(TRIPLE) \
--sysroot=$(TOOLCHAIN_SYSROOT) \
--prefix=$(TOOLCHAIN_SYSROOT)/usr/lib/$(ARCH_DIR)/$(API_LEVEL) \
-L$(TOOLCHAIN_SYSROOT)/usr/lib/$(ARCH_DIR)/$(API_LEVEL) \
$(TOOLCHAIN_SYSROOT)/usr/lib/$(ARCH_DIR)/libc++_static.a \
-lm \
-lc++abi \
-nostdlib++
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