TARGET_linux-arm.mk revision de36cd72e8e5a154c1fedf63e1ea83af9d5288aa
1# 2# Copyright (C) 2006 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 $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT)),) 34TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT := armv5te 35endif 36 37# Decouple NDK library selection with platform compiler version 38$(combo_2nd_arch_prefix)TARGET_NDK_GCC_VERSION := 4.8 39 40ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) 41$(combo_2nd_arch_prefix)TARGET_GCC_VERSION := 4.8 42else 43$(combo_2nd_arch_prefix)TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) 44endif 45 46TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_$(combo_2nd_arch_prefix)ARCH)/$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT).mk 47ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 48$(error Unknown ARM architecture version: $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT)) 49endif 50 51include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 52 53# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 54ifeq ($(strip $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)),) 55$(combo_2nd_arch_prefix)TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/arm/arm-linux-androideabi-$($(combo_2nd_arch_prefix)TARGET_GCC_VERSION) 56$(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX := $($(combo_2nd_arch_prefix)TARGET_TOOLCHAIN_ROOT)/bin/arm-linux-androideabi- 57endif 58 59$(combo_2nd_arch_prefix)TARGET_CC := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) 60$(combo_2nd_arch_prefix)TARGET_CXX := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) 61$(combo_2nd_arch_prefix)TARGET_AR := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) 62$(combo_2nd_arch_prefix)TARGET_OBJCOPY := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) 63$(combo_2nd_arch_prefix)TARGET_LD := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) 64$(combo_2nd_arch_prefix)TARGET_READELF := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)readelf$(HOST_EXECUTABLE_SUFFIX) 65$(combo_2nd_arch_prefix)TARGET_STRIP := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 66 67$(combo_2nd_arch_prefix)TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 68 69$(combo_2nd_arch_prefix)TARGET_arm_CFLAGS := -O2 \ 70 -fomit-frame-pointer \ 71 -fstrict-aliasing \ 72 -funswitch-loops 73 74# Modules can choose to compile some source as thumb. 75$(combo_2nd_arch_prefix)TARGET_thumb_CFLAGS := -mthumb \ 76 -Os \ 77 -fomit-frame-pointer \ 78 -fno-strict-aliasing 79 80# Set FORCE_ARM_DEBUGGING to "true" in your buildspec.mk 81# or in your environment to force a full arm build, even for 82# files that are normally built as thumb; this can make 83# gdb debugging easier. Don't forget to do a clean build. 84# 85# NOTE: if you try to build a -O0 build with thumb, several 86# of the libraries (libpv, libwebcore, libkjs) need to be built 87# with -mlong-calls. When built at -O0, those libraries are 88# too big for a thumb "BL <label>" to go from one end to the other. 89ifeq ($(FORCE_ARM_DEBUGGING),true) 90 $(combo_2nd_arch_prefix)TARGET_arm_CFLAGS += -fno-omit-frame-pointer -fno-strict-aliasing 91 $(combo_2nd_arch_prefix)TARGET_thumb_CFLAGS += -marm -fno-omit-frame-pointer 92endif 93 94android_config_h := $(call select-android-config-h,linux-arm) 95 96$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += \ 97 -msoft-float -fpic -fPIE \ 98 -ffunction-sections \ 99 -fdata-sections \ 100 -funwind-tables \ 101 -fstack-protector \ 102 -Wa,--noexecstack \ 103 -Werror=format-security \ 104 -D_FORTIFY_SOURCE=2 \ 105 -fno-short-enums \ 106 $(arch_variant_cflags) \ 107 -include $(android_config_h) \ 108 -I $(dir $(android_config_h)) 109 110# The "-Wunused-but-set-variable" option often breaks projects that enable 111# "-Wall -Werror" due to a commom idiom "ALOGV(mesg)" where ALOGV is turned 112# into no-op in some builds while mesg is defined earlier. So we explicitly 113# disable "-Wunused-but-set-variable" here. 114ifneq ($(filter 4.6 4.6.% 4.7 4.7.% 4.8, $($(combo_2nd_arch_prefix)TARGET_GCC_VERSION)),) 115$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable -fno-builtin-sin \ 116 -fno-strict-volatile-bitfields 117endif 118 119# This is to avoid the dreaded warning compiler message: 120# note: the mangling of 'va_list' has changed in GCC 4.4 121# 122# The fact that the mangling changed does not affect the NDK ABI 123# very fortunately (since none of the exposed APIs used va_list 124# in their exported C++ functions). Also, GCC 4.5 has already 125# removed the warning from the compiler. 126# 127$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -Wno-psabi 128 129$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += \ 130 -Wl,-z,noexecstack \ 131 -Wl,-z,relro \ 132 -Wl,-z,now \ 133 -Wl,--warn-shared-textrel \ 134 -Wl,--fatal-warnings \ 135 -Wl,--icf=safe \ 136 $(arch_variant_ldflags) 137 138$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -mthumb-interwork 139 140$(combo_2nd_arch_prefix)TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 141 142# More flags/options can be added here 143$(combo_2nd_arch_prefix)TARGET_RELEASE_CFLAGS := \ 144 -DNDEBUG \ 145 -g \ 146 -Wstrict-aliasing=2 \ 147 -fgcse-after-reload \ 148 -frerun-cse-after-loop \ 149 -frename-registers 150 151libc_root := bionic/libc 152libm_root := bionic/libm 153libstdc++_root := bionic/libstdc++ 154 155 156## on some hosts, the target cross-compiler is not available so do not run this command 157ifneq ($(wildcard $($(combo_2nd_arch_prefix)TARGET_CC)),) 158# We compile with the global cflags to ensure that 159# any flags which affect libgcc are correctly taken 160# into account. 161$(combo_2nd_arch_prefix)TARGET_LIBGCC := $(shell $($(combo_2nd_arch_prefix)TARGET_CC) \ 162 $($(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS) -print-libgcc-file-name) 163target_libgcov := $(shell $($(combo_2nd_arch_prefix)TARGET_CC) $($(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS) \ 164 -print-file-name=libgcov.a) 165endif 166 167# Define FDO (Feedback Directed Optimization) options. 168 169$(combo_2nd_arch_prefix)TARGET_FDO_CFLAGS:= 170$(combo_2nd_arch_prefix)TARGET_FDO_LIB:= 171 172ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),) 173 # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation. 174 # The profile will be generated on /data/local/tmp/profile on the device. 175 $(combo_2nd_arch_prefix)TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO 176 $(combo_2nd_arch_prefix)TARGET_FDO_LIB := $(target_libgcov) 177else 178 # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations. 179 # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build. 180 ifeq ($(strip $($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH)),) 181 $(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_$(combo_2nd_arch_prefix)ARCH)/$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT) 182 else 183 ifeq ($(strip $(wildcard $($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH))),) 184 $(warning Custom $(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.) 185 endif 186 endif 187 188 # If the FDO profile directory can't be found, then FDO is off. 189 ifneq ($(strip $(wildcard $($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH))),) 190 $(combo_2nd_arch_prefix)TARGET_FDO_CFLAGS := -fprofile-use=$($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH) -DANDROID_FDO 191 $(combo_2nd_arch_prefix)TARGET_FDO_LIB := $(target_libgcov) 192 endif 193endif 194 195 196KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 197KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_$(combo_2nd_arch_prefix)ARCH) 198KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 199 200$(combo_2nd_arch_prefix)TARGET_C_INCLUDES := \ 201 $(libc_root)/arch-arm/include \ 202 $(libc_root)/include \ 203 $(libstdc++_root)/include \ 204 $(KERNEL_HEADERS) \ 205 $(libm_root)/include \ 206 $(libm_root)/include/arm \ 207 208$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_STATIC_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 209$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_DYNAMIC_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 210$(combo_2nd_arch_prefix)TARGET_CRTEND_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 211 212$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_SO_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 213$(combo_2nd_arch_prefix)TARGET_CRTEND_SO_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 214 215$(combo_2nd_arch_prefix)TARGET_STRIP_MODULE:=true 216 217$(combo_2nd_arch_prefix)TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 218 219$(combo_2nd_arch_prefix)TARGET_CUSTOM_LD_COMMAND := true 220 221define $(combo_2nd_arch_prefix)transform-o-to-shared-lib-inner 222$(hide) $(PRIVATE_CXX) \ 223 -nostdlib -Wl,-soname,$(notdir $@) \ 224 -Wl,--gc-sections \ 225 -Wl,-shared,-Bsymbolic \ 226 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 227 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 228 $(PRIVATE_ALL_OBJECTS) \ 229 -Wl,--whole-archive \ 230 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 231 -Wl,--no-whole-archive \ 232 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 233 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 234 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 235 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 236 $(PRIVATE_TARGET_FDO_LIB) \ 237 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 238 -o $@ \ 239 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 240 $(PRIVATE_LDFLAGS) \ 241 $(PRIVATE_TARGET_LIBGCC) \ 242 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) \ 243 $(PRIVATE_LDLIBS) 244endef 245 246define $(combo_2nd_arch_prefix)transform-o-to-executable-inner 247$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 248 -Wl,-dynamic-linker,/system/bin/linker \ 249 -Wl,--gc-sections \ 250 -Wl,-z,nocopyreloc \ 251 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 252 -Wl,-rpath-link=$(PRIVATE_TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 253 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 254 $(PRIVATE_ALL_OBJECTS) \ 255 -Wl,--whole-archive \ 256 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 257 -Wl,--no-whole-archive \ 258 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 259 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 260 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 261 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 262 $(PRIVATE_TARGET_FDO_LIB) \ 263 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 264 -o $@ \ 265 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 266 $(PRIVATE_LDFLAGS) \ 267 $(PRIVATE_TARGET_LIBGCC) \ 268 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) \ 269 $(PRIVATE_LDLIBS) 270endef 271 272define $(combo_2nd_arch_prefix)transform-o-to-static-executable-inner 273$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 274 -Wl,--gc-sections \ 275 -o $@ \ 276 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 277 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 278 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 279 $(PRIVATE_LDFLAGS) \ 280 $(PRIVATE_ALL_OBJECTS) \ 281 -Wl,--whole-archive \ 282 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 283 -Wl,--no-whole-archive \ 284 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 285 -Wl,--start-group \ 286 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 287 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 288 $(PRIVATE_TARGET_FDO_LIB) \ 289 $(PRIVATE_TARGET_LIBGCC) \ 290 -Wl,--end-group \ 291 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 292endef 293