TARGET_linux-arm64.mk revision 8f47fc379e79becfc395c4f51b691aa7af75baee
1# 2# Copyright (C) 2013 The Android Open Source Project 3# 4# Licensed under the Apache License, Version 2.0 (the "License"); 5# you may not use this file except in compliance with the License. 6# You may obtain a copy of the License at 7# 8# http://www.apache.org/licenses/LICENSE-2.0 9# 10# Unless required by applicable law or agreed to in writing, software 11# distributed under the License is distributed on an "AS IS" BASIS, 12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13# See the License for the specific language governing permissions and 14# limitations under the License. 15# 16 17# Configuration for Linux on ARM. 18# Included by combo/select.mk 19 20# You can set TARGET_ARCH_VARIANT to use an arch version other 21# than ARMv5TE. Each value should correspond to a file named 22# $(BUILD_COMBOS)/arch/<name>.mk which must contain 23# makefile variable definitions similar to the preprocessor 24# defines in build/core/combo/include/arch/<combo>/AndroidConfig.h. Their 25# purpose is to allow module Android.mk files to selectively compile 26# different versions of code based upon the funtionality and 27# instructions available in a given architecture version. 28# 29# The blocks also define specific arch_variant_cflags, which 30# include defines, and compiler settings for the given architecture 31# version. 32# 33ifeq ($(strip $(TARGET_ARCH_VARIANT)),) 34TARGET_ARCH_VARIANT := armv8 35endif 36 37ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) 38TARGET_GCC_VERSION := 4.8 39else 40TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) 41endif 42 43TARGET_IS_64_BIT := true 44 45TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk 46ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 47$(error Unknown ARM architecture version: $(TARGET_ARCH_VARIANT)) 48endif 49 50# TODO: Enable Clang when aarch64 prebuilt is added 51WITHOUT_CLANG := true 52 53include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 54 55# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 56ifeq ($(strip $(TARGET_TOOLS_PREFIX)),) 57TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/aarch64/aarch64-linux-android-$(TARGET_GCC_VERSION) 58TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/aarch64-linux-android- 59endif 60 61TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) 62TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) 63TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) 64TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) 65TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) 66TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 67ifeq ($(TARGET_BUILD_VARIANT),user) 68 TARGET_STRIP_COMMAND = $(PRIVATE_STRIP) --strip-all $< -o $@ 69else 70 TARGET_STRIP_COMMAND = $(PRIVATE_STRIP) --strip-all $< -o $@ && \ 71 $(PRIVATE_OBJCOPY) --add-gnu-debuglink=$< $@ 72endif 73 74TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 75 76TARGET_GLOBAL_CFLAGS += \ 77 -fno-strict-aliasing \ 78 79android_config_h := $(call select-android-config-h,linux-arm64) 80 81TARGET_GLOBAL_CFLAGS += \ 82 -fpic -fPIE \ 83 -ffunction-sections \ 84 -fdata-sections \ 85 -funwind-tables \ 86 -Wa,--noexecstack \ 87 -Werror=format-security \ 88 -D_FORTIFY_SOURCE=2 \ 89 -fno-short-enums \ 90 $(arch_variant_cflags) \ 91 -include $(android_config_h) \ 92 -I $(dir $(android_config_h)) 93 94# HACK: globally disable -fstack-protector until the toolchain supports it 95TARGET_GLOBAL_UNSUPPORTED_CFLAGS := -fstack-protector 96 97# TODO - remove __ANDROID__ after the next aarch64 toolchain refresh 98TARGET_GLOBAL_CFLAGS += -D__ANDROID__=1 99 100TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields 101 102# This is to avoid the dreaded warning compiler message: 103# note: the mangling of 'va_list' has changed in GCC 4.4 104# 105# The fact that the mangling changed does not affect the NDK ABI 106# very fortunately (since none of the exposed APIs used va_list 107# in their exported C++ functions). Also, GCC 4.5 has already 108# removed the warning from the compiler. 109# 110TARGET_GLOBAL_CFLAGS += -Wno-psabi 111 112# TODO - temporarily remove "-Wl,-z,relro -Wl,-z,now" as they cause segmentation fault on the 113# v8 foundation model. 114TARGET_GLOBAL_LDFLAGS += \ 115 -Wl,-z,noexecstack \ 116 -Wl,--warn-shared-textrel \ 117 -Wl,--fatal-warnings \ 118 $(arch_variant_ldflags) 119 120TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 121 122# More flags/options can be added here 123TARGET_RELEASE_CFLAGS := \ 124 -DNDEBUG \ 125 -O2 -g \ 126 -Wstrict-aliasing=2 \ 127 -fgcse-after-reload \ 128 -frerun-cse-after-loop \ 129 -frename-registers 130 131libc_root := bionic/libc 132libm_root := bionic/libm 133libstdc++_root := bionic/libstdc++ 134 135TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 136 -print-libgcc-file-name) 137 138KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 139KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) 140KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 141 142TARGET_C_INCLUDES := \ 143 $(libc_root)/arch-arm64/include \ 144 $(libc_root)/include \ 145 $(libstdc++_root)/include \ 146 $(KERNEL_HEADERS) \ 147 $(libm_root)/include \ 148 $(libm_root)/include/arm64 \ 149 150TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 151TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 152TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 153 154TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 155TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 156 157TARGET_STRIP_MODULE:=true 158 159TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 160 161TARGET_CUSTOM_LD_COMMAND := true 162 163define transform-o-to-shared-lib-inner 164$(hide) $(PRIVATE_CXX) \ 165 -nostdlib -Wl,-soname,$(notdir $@) \ 166 -Wl,-shared,-Bsymbolic \ 167 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 168 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 169 $(PRIVATE_ALL_OBJECTS) \ 170 -Wl,--whole-archive \ 171 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 172 -Wl,--no-whole-archive \ 173 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 174 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 175 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 176 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 177 $(PRIVATE_TARGET_FDO_LIB) \ 178 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 179 -o $@ \ 180 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 181 $(PRIVATE_LDFLAGS) \ 182 $(PRIVATE_TARGET_LIBGCC) \ 183 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) 184endef 185 186define transform-o-to-executable-inner 187$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 188 -Wl,-dynamic-linker,/system/bin/linker64 \ 189 -Wl,-z,nocopyreloc \ 190 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 191 -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 192 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 193 $(PRIVATE_ALL_OBJECTS) \ 194 -Wl,--whole-archive \ 195 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 196 -Wl,--no-whole-archive \ 197 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 198 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 199 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 200 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 201 $(PRIVATE_TARGET_FDO_LIB) \ 202 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 203 -o $@ \ 204 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 205 $(PRIVATE_LDFLAGS) \ 206 $(PRIVATE_TARGET_LIBGCC) \ 207 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 208endef 209 210define transform-o-to-static-executable-inner 211$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 212 -o $@ \ 213 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 214 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 215 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 216 $(PRIVATE_LDFLAGS) \ 217 $(PRIVATE_ALL_OBJECTS) \ 218 -Wl,--whole-archive \ 219 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 220 -Wl,--no-whole-archive \ 221 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 222 -Wl,--start-group \ 223 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 224 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 225 $(PRIVATE_TARGET_FDO_LIB) \ 226 $(PRIVATE_TARGET_LIBGCC) \ 227 -Wl,--end-group \ 228 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 229endef 230