TARGET_linux-arm64.mk revision 1ae9b213eb5648205223e4b825f4c808a5d2ace8
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 $(TARGET_ARCH_VARIANT)),) 34TARGET_ARCH_VARIANT := armv8 35endif 36 37# Decouple NDK library selection with platform compiler version 38TARGET_NDK_GCC_VERSION := 4.8 39 40ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) 41TARGET_GCC_VERSION := 4.9 42else 43TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) 44endif 45 46TARGET_IS_64_BIT := true 47 48TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk 49ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 50$(error Unknown ARM architecture version: $(TARGET_ARCH_VARIANT)) 51endif 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_READELF := $(TARGET_TOOLS_PREFIX)readelf$(HOST_EXECUTABLE_SUFFIX) 67TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 68 69TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 70 71TARGET_GLOBAL_CFLAGS += \ 72 -fno-strict-aliasing \ 73 74android_config_h := $(call select-android-config-h,linux-arm64) 75 76TARGET_GLOBAL_CFLAGS += \ 77 -fpic -fPIE \ 78 -fstack-protector \ 79 -ffunction-sections \ 80 -fdata-sections \ 81 -funwind-tables \ 82 -Wa,--noexecstack \ 83 -Werror=format-security \ 84 -D_FORTIFY_SOURCE=2 \ 85 -fno-short-enums \ 86 $(arch_variant_cflags) \ 87 -include $(android_config_h) \ 88 -I $(dir $(android_config_h)) 89 90# Help catch common 32/64-bit errors. 91TARGET_GLOBAL_CFLAGS += \ 92 -Werror=pointer-to-int-cast \ 93 -Werror=int-to-pointer-cast \ 94 95TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields 96 97# This is to avoid the dreaded warning compiler message: 98# note: the mangling of 'va_list' has changed in GCC 4.4 99# 100# The fact that the mangling changed does not affect the NDK ABI 101# very fortunately (since none of the exposed APIs used va_list 102# in their exported C++ functions). Also, GCC 4.5 has already 103# removed the warning from the compiler. 104# 105TARGET_GLOBAL_CFLAGS += -Wno-psabi 106 107# TODO - temporarily remove "-Wl,-z,relro -Wl,-z,now" as they cause segmentation fault on the 108# v8 foundation model. 109TARGET_GLOBAL_LDFLAGS += \ 110 -Wl,-z,noexecstack \ 111 -Wl,--warn-shared-textrel \ 112 -Wl,--fatal-warnings \ 113 $(arch_variant_ldflags) 114 115TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 116 117# More flags/options can be added here 118TARGET_RELEASE_CFLAGS := \ 119 -DNDEBUG \ 120 -O2 -g \ 121 -Wstrict-aliasing=2 \ 122 -fgcse-after-reload \ 123 -frerun-cse-after-loop \ 124 -frename-registers 125 126libc_root := bionic/libc 127libm_root := bionic/libm 128libstdc++_root := bionic/libstdc++ 129 130TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 131 -print-libgcc-file-name) 132 133KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 134KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) 135KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 136 137TARGET_C_INCLUDES := \ 138 $(libc_root)/arch-arm64/include \ 139 $(libc_root)/include \ 140 $(libstdc++_root)/include \ 141 $(KERNEL_HEADERS) \ 142 $(libm_root)/include \ 143 $(libm_root)/include/arm64 \ 144 145TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 146TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 147TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 148 149TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 150TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 151 152TARGET_STRIP_MODULE:=true 153 154TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 155 156TARGET_CUSTOM_LD_COMMAND := true 157 158define transform-o-to-shared-lib-inner 159$(hide) $(PRIVATE_CXX) \ 160 -nostdlib -Wl,-soname,$(notdir $@) \ 161 -Wl,--gc-sections \ 162 -Wl,-shared,-Bsymbolic \ 163 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 164 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 165 $(PRIVATE_ALL_OBJECTS) \ 166 -Wl,--whole-archive \ 167 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 168 -Wl,--no-whole-archive \ 169 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 170 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 171 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 172 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 173 $(PRIVATE_TARGET_FDO_LIB) \ 174 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 175 -o $@ \ 176 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 177 $(PRIVATE_LDFLAGS) \ 178 $(PRIVATE_TARGET_LIBGCC) \ 179 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) 180endef 181 182define transform-o-to-executable-inner 183$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 184 -Wl,-dynamic-linker,/system/bin/linker64 \ 185 -Wl,--gc-sections \ 186 -Wl,-z,nocopyreloc \ 187 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 188 -Wl,-rpath-link=$(PRIVATE_TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 189 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 190 $(PRIVATE_ALL_OBJECTS) \ 191 -Wl,--whole-archive \ 192 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 193 -Wl,--no-whole-archive \ 194 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 195 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 196 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 197 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 198 $(PRIVATE_TARGET_FDO_LIB) \ 199 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 200 -o $@ \ 201 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 202 $(PRIVATE_LDFLAGS) \ 203 $(PRIVATE_TARGET_LIBGCC) \ 204 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 205endef 206 207define transform-o-to-static-executable-inner 208$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 209 -Wl,--gc-sections \ 210 -o $@ \ 211 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 212 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 213 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 214 $(PRIVATE_LDFLAGS) \ 215 $(PRIVATE_ALL_OBJECTS) \ 216 -Wl,--whole-archive \ 217 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 218 -Wl,--no-whole-archive \ 219 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 220 -Wl,--start-group \ 221 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 222 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 223 $(PRIVATE_TARGET_FDO_LIB) \ 224 $(PRIVATE_TARGET_LIBGCC) \ 225 -Wl,--end-group \ 226 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 227endef 228