160 lines
5.3 KiB
Makefile
160 lines
5.3 KiB
Makefile
#
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# Copyright (C) 2013 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Configuration for Linux on ARM.
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# Included by combo/select.mk
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# You can set TARGET_ARCH_VARIANT to use an arch version other
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# than ARMv5TE. Each value should correspond to a file named
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# $(BUILD_COMBOS)/arch/<name>.mk which must contain
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# makefile variable definitions similar to the preprocessor
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# defines in build/core/combo/include/arch/<combo>/AndroidConfig.h. Their
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# purpose is to allow module Android.mk files to selectively compile
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# different versions of code based upon the funtionality and
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# instructions available in a given architecture version.
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#
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# The blocks also define specific arch_variant_cflags, which
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# include defines, and compiler settings for the given architecture
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# version.
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#
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ifeq ($(strip $(TARGET_ARCH_VARIANT)),)
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TARGET_ARCH_VARIANT := armv8
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endif
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# Decouple NDK library selection with platform compiler version
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TARGET_NDK_GCC_VERSION := 4.9
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ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),)
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TARGET_GCC_VERSION := 4.9
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else
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TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP)
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endif
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TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk
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ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),)
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$(error Unknown ARM architecture version: $(TARGET_ARCH_VARIANT))
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endif
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include $(TARGET_ARCH_SPECIFIC_MAKEFILE)
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include $(BUILD_SYSTEM)/combo/fdo.mk
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# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
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ifeq ($(strip $(TARGET_TOOLS_PREFIX)),)
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TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/aarch64/aarch64-linux-android-$(TARGET_GCC_VERSION)
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TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/aarch64-linux-android-
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endif
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TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
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TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
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TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
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TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
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TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
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TARGET_READELF := $(TARGET_TOOLS_PREFIX)readelf$(HOST_EXECUTABLE_SUFFIX)
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TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
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TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
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TARGET_GLOBAL_CFLAGS += \
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-fno-strict-aliasing \
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android_config_h := $(call select-android-config-h,linux-arm64)
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TARGET_GLOBAL_CFLAGS += \
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-fstack-protector \
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-ffunction-sections \
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-fdata-sections \
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-funwind-tables \
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-Wa,--noexecstack \
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-Werror=format-security \
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-D_FORTIFY_SOURCE=2 \
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-fno-short-enums \
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-no-canonical-prefixes \
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-fno-canonical-system-headers \
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$(arch_variant_cflags) \
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-include $(android_config_h) \
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-I $(dir $(android_config_h))
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# Help catch common 32/64-bit errors.
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TARGET_GLOBAL_CFLAGS += \
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-Werror=pointer-to-int-cast \
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-Werror=int-to-pointer-cast \
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TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields
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# This is to avoid the dreaded warning compiler message:
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# note: the mangling of 'va_list' has changed in GCC 4.4
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#
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# The fact that the mangling changed does not affect the NDK ABI
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# very fortunately (since none of the exposed APIs used va_list
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# in their exported C++ functions). Also, GCC 4.5 has already
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# removed the warning from the compiler.
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#
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TARGET_GLOBAL_CFLAGS += -Wno-psabi
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TARGET_GLOBAL_LDFLAGS += \
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-Wl,-z,noexecstack \
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-Wl,-z,relro \
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-Wl,-z,now \
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-Wl,--warn-shared-textrel \
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-Wl,--fatal-warnings \
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-Wl,-maarch64linux \
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-Wl,--hash-style=gnu \
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$(arch_variant_ldflags)
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TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden
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# More flags/options can be added here
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TARGET_RELEASE_CFLAGS := \
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-DNDEBUG \
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-O2 -g \
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-Wstrict-aliasing=2 \
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-fgcse-after-reload \
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-frerun-cse-after-loop \
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-frename-registers
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libc_root := bionic/libc
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libm_root := bionic/libm
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TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
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-print-libgcc-file-name)
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TARGET_LIBATOMIC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
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-print-file-name=libatomic.a)
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TARGET_LIBGCOV := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
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-print-file-name=libgcov.a)
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KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
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KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
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KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
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TARGET_C_INCLUDES := \
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$(libc_root)/arch-arm64/include \
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$(libc_root)/include \
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$(KERNEL_HEADERS) \
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$(libm_root)/include \
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$(libm_root)/include/arm64 \
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TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
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TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
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TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
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TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
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TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
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TARGET_STRIP_MODULE:=true
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TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libm
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TARGET_LINKER := /system/bin/linker64
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