TARGET_linux-arm64.mk revision ed56902c29e984b987089e13a27f9f25ac6c6e42
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 50include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 51 52# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 53ifeq ($(strip $(TARGET_TOOLS_PREFIX)),) 54TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/aarch64/aarch64-linux-android-$(TARGET_GCC_VERSION) 55TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/aarch64-linux-android- 56endif 57 58TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) 59TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) 60TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) 61TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) 62TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) 63TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 64ifeq ($(TARGET_BUILD_VARIANT),user) 65 TARGET_STRIP_COMMAND = $(PRIVATE_STRIP) --strip-all $< -o $@ 66else 67 TARGET_STRIP_COMMAND = $(PRIVATE_STRIP) --strip-all $< -o $@ && \ 68 $(PRIVATE_OBJCOPY) --add-gnu-debuglink=$< $@ 69endif 70 71TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 72 73TARGET_GLOBAL_CFLAGS += \ 74 -fno-strict-aliasing \ 75 76android_config_h := $(call select-android-config-h,linux-arm64) 77 78# HACK: globally disable -fstack-protector until the toolchain supports it 79TARGET_GLOBAL_UNSUPPORTED_CFLAGS := \ 80 -fstack-protector \ 81 -fstack-protector-all \ 82 83TARGET_GLOBAL_CFLAGS += \ 84 -fpic -fPIE \ 85 -ffunction-sections \ 86 -fdata-sections \ 87 -funwind-tables \ 88 -Wa,--noexecstack \ 89 -Werror=format-security \ 90 -D_FORTIFY_SOURCE=2 \ 91 -fno-short-enums \ 92 $(arch_variant_cflags) \ 93 -include $(android_config_h) \ 94 -I $(dir $(android_config_h)) 95 96# Help catch common 32/64-bit errors. 97TARGET_GLOBAL_CFLAGS += \ 98 -Werror=pointer-to-int-cast \ 99 -Werror=int-to-pointer-cast \ 100 101TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields 102 103# This is to avoid the dreaded warning compiler message: 104# note: the mangling of 'va_list' has changed in GCC 4.4 105# 106# The fact that the mangling changed does not affect the NDK ABI 107# very fortunately (since none of the exposed APIs used va_list 108# in their exported C++ functions). Also, GCC 4.5 has already 109# removed the warning from the compiler. 110# 111TARGET_GLOBAL_CFLAGS += -Wno-psabi 112 113# TODO - temporarily remove "-Wl,-z,relro -Wl,-z,now" as they cause segmentation fault on the 114# v8 foundation model. 115TARGET_GLOBAL_LDFLAGS += \ 116 -Wl,-z,noexecstack \ 117 -Wl,--warn-shared-textrel \ 118 -Wl,--fatal-warnings \ 119 $(arch_variant_ldflags) 120 121TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 122 123# More flags/options can be added here 124TARGET_RELEASE_CFLAGS := \ 125 -DNDEBUG \ 126 -O2 -g \ 127 -Wstrict-aliasing=2 \ 128 -fgcse-after-reload \ 129 -frerun-cse-after-loop \ 130 -frename-registers 131 132libc_root := bionic/libc 133libm_root := bionic/libm 134libstdc++_root := bionic/libstdc++ 135 136TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 137 -print-libgcc-file-name) 138 139KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 140KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) 141KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 142 143TARGET_C_INCLUDES := \ 144 $(libc_root)/arch-arm64/include \ 145 $(libc_root)/include \ 146 $(libstdc++_root)/include \ 147 $(KERNEL_HEADERS) \ 148 $(libm_root)/include \ 149 $(libm_root)/include/arm64 \ 150 151TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 152TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 153TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 154 155TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 156TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 157 158TARGET_STRIP_MODULE:=true 159 160TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 161 162TARGET_CUSTOM_LD_COMMAND := true 163 164define transform-o-to-shared-lib-inner 165$(hide) $(PRIVATE_CXX) \ 166 -nostdlib -Wl,-soname,$(notdir $@) \ 167 -Wl,-shared,-Bsymbolic \ 168 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 169 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 170 $(PRIVATE_ALL_OBJECTS) \ 171 -Wl,--whole-archive \ 172 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 173 -Wl,--no-whole-archive \ 174 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 175 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 176 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 177 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 178 $(PRIVATE_TARGET_FDO_LIB) \ 179 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 180 -o $@ \ 181 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 182 $(PRIVATE_LDFLAGS) \ 183 $(PRIVATE_TARGET_LIBGCC) \ 184 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) 185endef 186 187define transform-o-to-executable-inner 188$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 189 -Wl,-dynamic-linker,/system/bin/linker64 \ 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 $(PRIVATE_TARGET_LIBGCC) \ 208 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 209endef 210 211define transform-o-to-static-executable-inner 212$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 213 -o $@ \ 214 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 215 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 216 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 217 $(PRIVATE_LDFLAGS) \ 218 $(PRIVATE_ALL_OBJECTS) \ 219 -Wl,--whole-archive \ 220 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 221 -Wl,--no-whole-archive \ 222 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 223 -Wl,--start-group \ 224 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 225 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 226 $(PRIVATE_TARGET_FDO_LIB) \ 227 $(PRIVATE_TARGET_LIBGCC) \ 228 -Wl,--end-group \ 229 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 230endef 231