TARGET_linux-arm64.mk revision 18042e19608970ad930afe938dd0232a43fbd63b
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 81# HACK: globally disable -fstack-protector until the toolchain supports it 82TARGET_GLOBAL_UNSUPPORTED_CFLAGS := \ 83 -fstack-protector \ 84 -fstack-protector-all \ 85 86TARGET_GLOBAL_CFLAGS += \ 87 -fpic -fPIE \ 88 -ffunction-sections \ 89 -fdata-sections \ 90 -funwind-tables \ 91 -Wa,--noexecstack \ 92 -Werror=format-security \ 93 -D_FORTIFY_SOURCE=2 \ 94 -fno-short-enums \ 95 $(arch_variant_cflags) \ 96 -include $(android_config_h) \ 97 -I $(dir $(android_config_h)) 98 99# Help catch common 32/64-bit errors. 100TARGET_GLOBAL_CFLAGS += \ 101 -Werror=pointer-to-int-cast \ 102 -Werror=int-to-pointer-cast \ 103 104# TODO - remove __ANDROID__ after the next aarch64 toolchain refresh 105TARGET_GLOBAL_CFLAGS += -D__ANDROID__=1 106 107TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields 108 109# This is to avoid the dreaded warning compiler message: 110# note: the mangling of 'va_list' has changed in GCC 4.4 111# 112# The fact that the mangling changed does not affect the NDK ABI 113# very fortunately (since none of the exposed APIs used va_list 114# in their exported C++ functions). Also, GCC 4.5 has already 115# removed the warning from the compiler. 116# 117TARGET_GLOBAL_CFLAGS += -Wno-psabi 118 119# TODO - temporarily remove "-Wl,-z,relro -Wl,-z,now" as they cause segmentation fault on the 120# v8 foundation model. 121TARGET_GLOBAL_LDFLAGS += \ 122 -Wl,-z,noexecstack \ 123 -Wl,--warn-shared-textrel \ 124 -Wl,--fatal-warnings \ 125 $(arch_variant_ldflags) 126 127TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 128 129# More flags/options can be added here 130TARGET_RELEASE_CFLAGS := \ 131 -DNDEBUG \ 132 -O2 -g \ 133 -Wstrict-aliasing=2 \ 134 -fgcse-after-reload \ 135 -frerun-cse-after-loop \ 136 -frename-registers 137 138libc_root := bionic/libc 139libm_root := bionic/libm 140libstdc++_root := bionic/libstdc++ 141 142TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 143 -print-libgcc-file-name) 144 145KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 146KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) 147KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 148 149TARGET_C_INCLUDES := \ 150 $(libc_root)/arch-arm64/include \ 151 $(libc_root)/include \ 152 $(libstdc++_root)/include \ 153 $(KERNEL_HEADERS) \ 154 $(libm_root)/include \ 155 $(libm_root)/include/arm64 \ 156 157TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 158TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 159TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 160 161TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 162TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 163 164TARGET_STRIP_MODULE:=true 165 166TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 167 168TARGET_CUSTOM_LD_COMMAND := true 169 170define transform-o-to-shared-lib-inner 171$(hide) $(PRIVATE_CXX) \ 172 -nostdlib -Wl,-soname,$(notdir $@) \ 173 -Wl,-shared,-Bsymbolic \ 174 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 175 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 176 $(PRIVATE_ALL_OBJECTS) \ 177 -Wl,--whole-archive \ 178 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 179 -Wl,--no-whole-archive \ 180 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 181 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 182 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 183 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 184 $(PRIVATE_TARGET_FDO_LIB) \ 185 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 186 -o $@ \ 187 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 188 $(PRIVATE_LDFLAGS) \ 189 $(PRIVATE_TARGET_LIBGCC) \ 190 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) 191endef 192 193define transform-o-to-executable-inner 194$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 195 -Wl,-dynamic-linker,/system/bin/linker64 \ 196 -Wl,-z,nocopyreloc \ 197 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 198 -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 199 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 200 $(PRIVATE_ALL_OBJECTS) \ 201 -Wl,--whole-archive \ 202 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 203 -Wl,--no-whole-archive \ 204 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 205 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 206 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 207 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 208 $(PRIVATE_TARGET_FDO_LIB) \ 209 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 210 -o $@ \ 211 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 212 $(PRIVATE_LDFLAGS) \ 213 $(PRIVATE_TARGET_LIBGCC) \ 214 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 215endef 216 217define transform-o-to-static-executable-inner 218$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 219 -o $@ \ 220 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 221 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 222 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 223 $(PRIVATE_LDFLAGS) \ 224 $(PRIVATE_ALL_OBJECTS) \ 225 -Wl,--whole-archive \ 226 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 227 -Wl,--no-whole-archive \ 228 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 229 -Wl,--start-group \ 230 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 231 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 232 $(PRIVATE_TARGET_FDO_LIB) \ 233 $(PRIVATE_TARGET_LIBGCC) \ 234 -Wl,--end-group \ 235 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 236endef 237