TARGET_linux-arm64.mk revision 25671e15cc1b199ca693f95864ab93a63909a526
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_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk 47ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 48$(error Unknown ARM architecture version: $(TARGET_ARCH_VARIANT)) 49endif 50 51include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 52include $(BUILD_SYSTEM)/combo/fdo.mk 53 54# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 55ifeq ($(strip $(TARGET_TOOLS_PREFIX)),) 56TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/aarch64/aarch64-linux-android-$(TARGET_GCC_VERSION) 57TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/aarch64-linux-android- 58endif 59 60TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) 61TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) 62TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) 63TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) 64TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) 65TARGET_READELF := $(TARGET_TOOLS_PREFIX)readelf$(HOST_EXECUTABLE_SUFFIX) 66TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 67 68TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 69 70TARGET_GLOBAL_CFLAGS += \ 71 -fno-strict-aliasing \ 72 73android_config_h := $(call select-android-config-h,linux-arm64) 74 75TARGET_GLOBAL_CFLAGS += \ 76 -fpic -fPIE \ 77 -fstack-protector \ 78 -ffunction-sections \ 79 -fdata-sections \ 80 -funwind-tables \ 81 -Wa,--noexecstack \ 82 -Werror=format-security \ 83 -D_FORTIFY_SOURCE=2 \ 84 -fno-short-enums \ 85 -no-canonical-prefixes \ 86 -fno-canonical-system-headers \ 87 $(arch_variant_cflags) \ 88 -include $(android_config_h) \ 89 -I $(dir $(android_config_h)) 90 91# Help catch common 32/64-bit errors. 92TARGET_GLOBAL_CFLAGS += \ 93 -Werror=pointer-to-int-cast \ 94 -Werror=int-to-pointer-cast \ 95 96TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields 97 98# This is to avoid the dreaded warning compiler message: 99# note: the mangling of 'va_list' has changed in GCC 4.4 100# 101# The fact that the mangling changed does not affect the NDK ABI 102# very fortunately (since none of the exposed APIs used va_list 103# in their exported C++ functions). Also, GCC 4.5 has already 104# removed the warning from the compiler. 105# 106TARGET_GLOBAL_CFLAGS += -Wno-psabi 107 108TARGET_GLOBAL_LDFLAGS += \ 109 -Wl,-z,noexecstack \ 110 -Wl,-z,relro \ 111 -Wl,-z,now \ 112 -Wl,--warn-shared-textrel \ 113 -Wl,--fatal-warnings \ 114 -Wl,-maarch64linux \ 115 $(arch_variant_ldflags) 116 117TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 118 119# More flags/options can be added here 120TARGET_RELEASE_CFLAGS := \ 121 -DNDEBUG \ 122 -O2 -g \ 123 -Wstrict-aliasing=2 \ 124 -fgcse-after-reload \ 125 -frerun-cse-after-loop \ 126 -frename-registers 127 128libc_root := bionic/libc 129libm_root := bionic/libm 130libstdc++_root := bionic/libstdc++ 131 132TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 133 -print-libgcc-file-name) 134TARGET_LIBATOMIC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 135 -print-file-name=libatomic.a) 136 137KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 138KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) 139KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 140 141TARGET_C_INCLUDES := \ 142 $(libc_root)/arch-arm64/include \ 143 $(libc_root)/include \ 144 $(libstdc++_root)/include \ 145 $(KERNEL_HEADERS) \ 146 $(libm_root)/include \ 147 $(libm_root)/include/arm64 \ 148 149TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 150TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 151TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 152 153TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 154TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 155 156TARGET_STRIP_MODULE:=true 157 158TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 159 160TARGET_CUSTOM_LD_COMMAND := true 161 162define transform-o-to-shared-lib-inner 163$(hide) $(PRIVATE_CXX) \ 164 -nostdlib -Wl,-soname,$(notdir $@) \ 165 -Wl,--gc-sections \ 166 -shared \ 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_LIBATOMIC) \ 183 $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ 184 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) \ 185 $(PRIVATE_LDLIBS) 186endef 187 188define transform-o-to-executable-inner 189$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 190 -Wl,-dynamic-linker,/system/bin/linker64 \ 191 -Wl,--gc-sections \ 192 -Wl,-z,nocopyreloc \ 193 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 194 -Wl,-rpath-link=$(PRIVATE_TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 195 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 196 $(PRIVATE_ALL_OBJECTS) \ 197 -Wl,--whole-archive \ 198 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 199 -Wl,--no-whole-archive \ 200 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 201 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 202 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 203 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 204 $(PRIVATE_TARGET_FDO_LIB) \ 205 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 206 -o $@ \ 207 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 208 $(PRIVATE_LDFLAGS) \ 209 $(PRIVATE_TARGET_LIBATOMIC) \ 210 $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ 211 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) \ 212 $(PRIVATE_LDLIBS) 213endef 214 215define transform-o-to-static-executable-inner 216$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 217 -Wl,--gc-sections \ 218 -o $@ \ 219 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 220 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 221 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 222 $(PRIVATE_LDFLAGS) \ 223 $(PRIVATE_ALL_OBJECTS) \ 224 -Wl,--whole-archive \ 225 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 226 -Wl,--no-whole-archive \ 227 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 228 -Wl,--start-group \ 229 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 230 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 231 $(PRIVATE_TARGET_FDO_LIB) \ 232 $(PRIVATE_TARGET_LIBATOMIC) \ 233 $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ 234 -Wl,--end-group \ 235 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 236endef 237