TARGET_linux-arm.mk revision ce1c596e1507295f3037e9fa7bf163fb2ab95a11
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_$(combo_2nd_arch_prefix)ARCH_VARIANT := armv5te 35endif 36 37ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) 38$(combo_2nd_arch_prefix)TARGET_GCC_VERSION := 4.8 39else 40$(combo_2nd_arch_prefix)TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) 41endif 42 43TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_$(combo_2nd_arch_prefix)ARCH)/$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT).mk 44ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 45$(error Unknown ARM architecture version: $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT)) 46endif 47 48include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 49 50# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 51ifeq ($(strip $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)),) 52$(combo_2nd_arch_prefix)TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/arm/arm-linux-androideabi-$($(combo_2nd_arch_prefix)TARGET_GCC_VERSION) 53$(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX := $($(combo_2nd_arch_prefix)TARGET_TOOLCHAIN_ROOT)/bin/arm-linux-androideabi- 54endif 55 56$(combo_2nd_arch_prefix)TARGET_CC := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) 57$(combo_2nd_arch_prefix)TARGET_CXX := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) 58$(combo_2nd_arch_prefix)TARGET_AR := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) 59$(combo_2nd_arch_prefix)TARGET_OBJCOPY := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) 60$(combo_2nd_arch_prefix)TARGET_LD := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) 61$(combo_2nd_arch_prefix)TARGET_READELF := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)readelf$(HOST_EXECUTABLE_SUFFIX) 62$(combo_2nd_arch_prefix)TARGET_STRIP := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 63 64$(combo_2nd_arch_prefix)TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 65 66$(combo_2nd_arch_prefix)TARGET_arm_CFLAGS := -O2 \ 67 -fomit-frame-pointer \ 68 -fstrict-aliasing \ 69 -funswitch-loops 70 71# Modules can choose to compile some source as thumb. 72$(combo_2nd_arch_prefix)TARGET_thumb_CFLAGS := -mthumb \ 73 -Os \ 74 -fomit-frame-pointer \ 75 -fno-strict-aliasing 76 77# Set FORCE_ARM_DEBUGGING to "true" in your buildspec.mk 78# or in your environment to force a full arm build, even for 79# files that are normally built as thumb; this can make 80# gdb debugging easier. Don't forget to do a clean build. 81# 82# NOTE: if you try to build a -O0 build with thumb, several 83# of the libraries (libpv, libwebcore, libkjs) need to be built 84# with -mlong-calls. When built at -O0, those libraries are 85# too big for a thumb "BL <label>" to go from one end to the other. 86ifeq ($(FORCE_ARM_DEBUGGING),true) 87 $(combo_2nd_arch_prefix)TARGET_arm_CFLAGS += -fno-omit-frame-pointer -fno-strict-aliasing 88 $(combo_2nd_arch_prefix)TARGET_thumb_CFLAGS += -marm -fno-omit-frame-pointer 89endif 90 91android_config_h := $(call select-android-config-h,linux-arm) 92 93$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += \ 94 -msoft-float -fpic -fPIE \ 95 -ffunction-sections \ 96 -fdata-sections \ 97 -funwind-tables \ 98 -fstack-protector \ 99 -Wa,--noexecstack \ 100 -Werror=format-security \ 101 -D_FORTIFY_SOURCE=2 \ 102 -fno-short-enums \ 103 $(arch_variant_cflags) \ 104 -include $(android_config_h) \ 105 -I $(dir $(android_config_h)) 106 107# The "-Wunused-but-set-variable" option often breaks projects that enable 108# "-Wall -Werror" due to a commom idiom "ALOGV(mesg)" where ALOGV is turned 109# into no-op in some builds while mesg is defined earlier. So we explicitly 110# disable "-Wunused-but-set-variable" here. 111ifneq ($(filter 4.6 4.6.% 4.7 4.7.% 4.8, $($(combo_2nd_arch_prefix)TARGET_GCC_VERSION)),) 112$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable -fno-builtin-sin \ 113 -fno-strict-volatile-bitfields 114endif 115 116# This is to avoid the dreaded warning compiler message: 117# note: the mangling of 'va_list' has changed in GCC 4.4 118# 119# The fact that the mangling changed does not affect the NDK ABI 120# very fortunately (since none of the exposed APIs used va_list 121# in their exported C++ functions). Also, GCC 4.5 has already 122# removed the warning from the compiler. 123# 124$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -Wno-psabi 125 126$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += \ 127 -Wl,-z,noexecstack \ 128 -Wl,-z,relro \ 129 -Wl,-z,now \ 130 -Wl,--warn-shared-textrel \ 131 -Wl,--fatal-warnings \ 132 -Wl,--icf=safe \ 133 $(arch_variant_ldflags) 134 135$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -mthumb-interwork 136 137$(combo_2nd_arch_prefix)TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 138 139# More flags/options can be added here 140$(combo_2nd_arch_prefix)TARGET_RELEASE_CFLAGS := \ 141 -DNDEBUG \ 142 -g \ 143 -Wstrict-aliasing=2 \ 144 -fgcse-after-reload \ 145 -frerun-cse-after-loop \ 146 -frename-registers 147 148libc_root := bionic/libc 149libm_root := bionic/libm 150libstdc++_root := bionic/libstdc++ 151 152 153## on some hosts, the target cross-compiler is not available so do not run this command 154ifneq ($(wildcard $($(combo_2nd_arch_prefix)TARGET_CC)),) 155# We compile with the global cflags to ensure that 156# any flags which affect libgcc are correctly taken 157# into account. 158$(combo_2nd_arch_prefix)TARGET_LIBGCC := $(shell $($(combo_2nd_arch_prefix)TARGET_CC) \ 159 $($(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS) -print-libgcc-file-name) 160target_libgcov := $(shell $($(combo_2nd_arch_prefix)TARGET_CC) $($(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS) \ 161 -print-file-name=libgcov.a) 162endif 163 164# Define FDO (Feedback Directed Optimization) options. 165 166$(combo_2nd_arch_prefix)TARGET_FDO_CFLAGS:= 167$(combo_2nd_arch_prefix)TARGET_FDO_LIB:= 168 169ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),) 170 # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation. 171 # The profile will be generated on /data/local/tmp/profile on the device. 172 $(combo_2nd_arch_prefix)TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO 173 $(combo_2nd_arch_prefix)TARGET_FDO_LIB := $(target_libgcov) 174else 175 # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations. 176 # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build. 177 ifeq ($(strip $($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH)),) 178 $(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_$(combo_2nd_arch_prefix)ARCH)/$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT) 179 else 180 ifeq ($(strip $(wildcard $($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH))),) 181 $(warning Custom $(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.) 182 endif 183 endif 184 185 # If the FDO profile directory can't be found, then FDO is off. 186 ifneq ($(strip $(wildcard $($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH))),) 187 $(combo_2nd_arch_prefix)TARGET_FDO_CFLAGS := -fprofile-use=$($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH) -DANDROID_FDO 188 $(combo_2nd_arch_prefix)TARGET_FDO_LIB := $(target_libgcov) 189 endif 190endif 191 192 193KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 194KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_$(combo_2nd_arch_prefix)ARCH) 195KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 196 197$(combo_2nd_arch_prefix)TARGET_C_INCLUDES := \ 198 $(libc_root)/arch-arm/include \ 199 $(libc_root)/include \ 200 $(libstdc++_root)/include \ 201 $(KERNEL_HEADERS) \ 202 $(libm_root)/include \ 203 $(libm_root)/include/arm \ 204 205$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_STATIC_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 206$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_DYNAMIC_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 207$(combo_2nd_arch_prefix)TARGET_CRTEND_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 208 209$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_SO_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 210$(combo_2nd_arch_prefix)TARGET_CRTEND_SO_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 211 212$(combo_2nd_arch_prefix)TARGET_STRIP_MODULE:=true 213 214$(combo_2nd_arch_prefix)TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 215 216$(combo_2nd_arch_prefix)TARGET_CUSTOM_LD_COMMAND := true 217 218define $(combo_2nd_arch_prefix)transform-o-to-shared-lib-inner 219$(hide) $(PRIVATE_CXX) \ 220 -nostdlib -Wl,-soname,$(notdir $@) \ 221 -Wl,--gc-sections \ 222 -Wl,-shared,-Bsymbolic \ 223 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 224 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 225 $(PRIVATE_ALL_OBJECTS) \ 226 -Wl,--whole-archive \ 227 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 228 -Wl,--no-whole-archive \ 229 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 230 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 231 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 232 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 233 $(PRIVATE_TARGET_FDO_LIB) \ 234 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 235 -o $@ \ 236 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 237 $(PRIVATE_LDFLAGS) \ 238 $(PRIVATE_TARGET_LIBGCC) \ 239 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) 240endef 241 242define $(combo_2nd_arch_prefix)transform-o-to-executable-inner 243$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 244 -Wl,-dynamic-linker,/system/bin/linker \ 245 -Wl,--gc-sections \ 246 -Wl,-z,nocopyreloc \ 247 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 248 -Wl,-rpath-link=$(PRIVATE_TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 249 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 250 $(PRIVATE_ALL_OBJECTS) \ 251 -Wl,--whole-archive \ 252 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 253 -Wl,--no-whole-archive \ 254 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 255 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 256 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 257 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 258 $(PRIVATE_TARGET_FDO_LIB) \ 259 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 260 -o $@ \ 261 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 262 $(PRIVATE_LDFLAGS) \ 263 $(PRIVATE_TARGET_LIBGCC) \ 264 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 265endef 266 267define $(combo_2nd_arch_prefix)transform-o-to-static-executable-inner 268$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 269 -Wl,--gc-sections \ 270 -o $@ \ 271 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 272 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 273 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 274 $(PRIVATE_LDFLAGS) \ 275 $(PRIVATE_ALL_OBJECTS) \ 276 -Wl,--whole-archive \ 277 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 278 -Wl,--no-whole-archive \ 279 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 280 -Wl,--start-group \ 281 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 282 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 283 $(PRIVATE_TARGET_FDO_LIB) \ 284 $(PRIVATE_TARGET_LIBGCC) \ 285 -Wl,--end-group \ 286 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 287endef 288