TARGET_linux-arm64.mk revision d90de32951835818a12b5fbb29871722ec1a7b1d
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 -no-canonical-prefixes \ 87 -fno-canonical-system-headers \ 88 $(arch_variant_cflags) \ 89 -include $(android_config_h) \ 90 -I $(dir $(android_config_h)) 91 92# Help catch common 32/64-bit errors. 93TARGET_GLOBAL_CFLAGS += \ 94 -Werror=pointer-to-int-cast \ 95 -Werror=int-to-pointer-cast \ 96 97TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields 98 99# This is to avoid the dreaded warning compiler message: 100# note: the mangling of 'va_list' has changed in GCC 4.4 101# 102# The fact that the mangling changed does not affect the NDK ABI 103# very fortunately (since none of the exposed APIs used va_list 104# in their exported C++ functions). Also, GCC 4.5 has already 105# removed the warning from the compiler. 106# 107TARGET_GLOBAL_CFLAGS += -Wno-psabi 108 109# TODO - temporarily remove "-Wl,-z,relro -Wl,-z,now" as they cause segmentation fault on the 110# v8 foundation model. 111TARGET_GLOBAL_LDFLAGS += \ 112 -Wl,-z,noexecstack \ 113 -Wl,--warn-shared-textrel \ 114 -Wl,--fatal-warnings \ 115 -Wl,-maarch64linux \ 116 $(arch_variant_ldflags) 117 118TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 119 120# More flags/options can be added here 121TARGET_RELEASE_CFLAGS := \ 122 -DNDEBUG \ 123 -O2 -g \ 124 -Wstrict-aliasing=2 \ 125 -fgcse-after-reload \ 126 -frerun-cse-after-loop \ 127 -frename-registers 128 129libc_root := bionic/libc 130libm_root := bionic/libm 131libstdc++_root := bionic/libstdc++ 132 133TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 134 -print-libgcc-file-name) 135 136KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 137KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) 138KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 139 140TARGET_C_INCLUDES := \ 141 $(libc_root)/arch-arm64/include \ 142 $(libc_root)/include \ 143 $(libstdc++_root)/include \ 144 $(KERNEL_HEADERS) \ 145 $(libm_root)/include \ 146 $(libm_root)/include/arm64 \ 147 148TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 149TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 150TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 151 152TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 153TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 154 155TARGET_STRIP_MODULE:=true 156 157TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 158 159TARGET_CUSTOM_LD_COMMAND := true 160 161define transform-o-to-shared-lib-inner 162$(hide) $(PRIVATE_CXX) \ 163 -nostdlib -Wl,-soname,$(notdir $@) \ 164 -Wl,--gc-sections \ 165 -Wl,-shared,-Bsymbolic \ 166 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 167 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 168 $(PRIVATE_ALL_OBJECTS) \ 169 -Wl,--whole-archive \ 170 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 171 -Wl,--no-whole-archive \ 172 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 173 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 174 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 175 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 176 $(PRIVATE_TARGET_FDO_LIB) \ 177 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 178 -o $@ \ 179 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 180 $(PRIVATE_LDFLAGS) \ 181 $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ 182 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) \ 183 $(PRIVATE_LDLIBS) 184endef 185 186define transform-o-to-executable-inner 187$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 188 -Wl,-dynamic-linker,/system/bin/linker64 \ 189 -Wl,--gc-sections \ 190 -Wl,-z,nocopyreloc \ 191 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 192 -Wl,-rpath-link=$(PRIVATE_TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 193 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 194 $(PRIVATE_ALL_OBJECTS) \ 195 -Wl,--whole-archive \ 196 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 197 -Wl,--no-whole-archive \ 198 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 199 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 200 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 201 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 202 $(PRIVATE_TARGET_FDO_LIB) \ 203 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 204 -o $@ \ 205 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 206 $(PRIVATE_LDFLAGS) \ 207 $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ 208 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) \ 209 $(PRIVATE_LDLIBS) 210endef 211 212define transform-o-to-static-executable-inner 213$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 214 -Wl,--gc-sections \ 215 -o $@ \ 216 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 217 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 218 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 219 $(PRIVATE_LDFLAGS) \ 220 $(PRIVATE_ALL_OBJECTS) \ 221 -Wl,--whole-archive \ 222 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 223 -Wl,--no-whole-archive \ 224 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 225 -Wl,--start-group \ 226 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 227 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 228 $(PRIVATE_TARGET_FDO_LIB) \ 229 $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ 230 -Wl,--end-group \ 231 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 232endef 233