TARGET_linux-x86.mk revision 6ecf0ef7447adbc1bd2f8b591f62d37bd8164255
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 x86 as a target. 18# Included by combo/select.mk 19 20# Provide a default variant. 21ifeq ($(strip $(TARGET_ARCH_VARIANT)),) 22TARGET_ARCH_VARIANT := x86 23endif 24 25ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) 26TARGET_GCC_VERSION := 4.7 27else 28TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) 29endif 30 31# Include the arch-variant-specific configuration file. 32# Its role is to define various ARCH_X86_HAVE_XXX feature macros, 33# plus initial values for TARGET_GLOBAL_CFLAGS 34# 35TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk 36ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 37$(error Unknown $(TARGET_ARCH) architecture version: $(TARGET_ARCH_VARIANT)) 38endif 39 40include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 41 42 43# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 44ifeq ($(strip $(TARGET_TOOLS_PREFIX)),) 45TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/x86/i686-linux-android-$(TARGET_GCC_VERSION) 46TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/i686-linux-android- 47endif 48 49TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) 50TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) 51TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) 52TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) 53TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) 54TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 55 56ifeq ($(TARGET_BUILD_VARIANT),user) 57TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-debug $< -o $@ 58else 59TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-debug $< -o $@ && \ 60 $(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@ 61endif 62 63ifneq ($(wildcard $(TARGET_CC)),) 64TARGET_LIBGCC := \ 65 $(shell $(TARGET_CC) -m32 -print-file-name=libgcc.a) 66target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 67 -print-file-name=libgcov.a) 68endif 69 70TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 71 72libc_root := bionic/libc 73libm_root := bionic/libm 74libstdc++_root := bionic/libstdc++ 75libthread_db_root := bionic/libthread_db 76 77# Define FDO (Feedback Directed Optimization) options. 78 79TARGET_FDO_CFLAGS:= 80TARGET_FDO_LIB:= 81 82ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),) 83 # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation. 84 # The profile will be generated on /data/local/tmp/profile on the device. 85 TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO 86 TARGET_FDO_LIB := $(target_libgcov) 87else 88 # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations. 89 # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build. 90 ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),) 91 TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT) 92 else 93 ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) 94 $(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.) 95 endif 96 endif 97 98 # If the FDO profile directory can't be found, then FDO is off. 99 ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) 100 TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO 101 TARGET_FDO_LIB := $(target_libgcov) 102 endif 103endif 104 105# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use 106# symlinks located in out/ to point to the appropriate kernel 107# headers. see 'config/kernel_headers.make' for more details 108# 109ifneq ($(CUSTOM_KERNEL_HEADERS),) 110 KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS) 111 KERNEL_HEADERS_ARCH := $(CUSTOM_KERNEL_HEADERS) 112else 113 KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common 114 KERNEL_HEADERS_ARCH := $(libc_root)/kernel/arch-$(TARGET_ARCH) 115endif 116KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 117 118TARGET_GLOBAL_CFLAGS += \ 119 -O2 \ 120 -Ulinux \ 121 -Wa,--noexecstack \ 122 -Werror=format-security \ 123 -D_FORTIFY_SOURCE=2 \ 124 -Wstrict-aliasing=2 \ 125 -fPIC -fPIE \ 126 -ffunction-sections \ 127 -finline-functions \ 128 -finline-limit=300 \ 129 -fno-inline-functions-called-once \ 130 -fno-short-enums \ 131 -fstrict-aliasing \ 132 -funswitch-loops \ 133 -funwind-tables \ 134 -fstack-protector 135 136android_config_h := $(call select-android-config-h,target_linux-x86) 137TARGET_ANDROID_CONFIG_CFLAGS := -include $(android_config_h) -I $(dir $(android_config_h)) 138TARGET_GLOBAL_CFLAGS += $(TARGET_ANDROID_CONFIG_CFLAGS) 139 140# XXX: Not sure this is still needed. Must check with our toolchains. 141TARGET_GLOBAL_CPPFLAGS += \ 142 -fno-use-cxa-atexit 143 144# XXX: Our toolchain is normally configured to always set these flags by default 145# however, there have been reports that this is sometimes not the case. So make 146# them explicit here unless we have the time to carefully check it 147# 148TARGET_GLOBAL_CFLAGS += -mstackrealign -msse3 -mfpmath=sse -m32 149 150# XXX: These flags should not be defined here anymore. Instead, the Android.mk 151# of the modules that depend on these features should instead check the 152# corresponding macros (e.g. ARCH_X86_HAVE_SSE2 and ARCH_X86_HAVE_SSSE3) 153# Keep them here until this is all cleared up. 154# 155ifeq ($(ARCH_X86_HAVE_SSE2),true) 156TARGET_GLOBAL_CFLAGS += -DUSE_SSE2 157endif 158 159ifeq ($(ARCH_X86_HAVE_SSSE3),true) # yes, really SSSE3, not SSE3! 160TARGET_GLOBAL_CFLAGS += -DUSE_SSSE3 161endif 162 163# XXX: This flag is probably redundant. I believe our toolchain always sets 164# it by default. Consider for removal. 165# 166TARGET_GLOBAL_CFLAGS += -mbionic 167 168# XXX: This flag is probably redundant. The macro should be defined by our 169# toolchain binaries automatically (as a compiler built-in). 170# Check with: $BINPREFIX-gcc -dM -E < /dev/null 171# 172# Consider for removal. 173# 174TARGET_GLOBAL_CFLAGS += -D__ANDROID__ 175 176# XXX: This flag is probably redundant since our toolchain binaries already 177# generate 32-bit machine code. It probably dates back to the old days 178# where we were using the host toolchain on Linux to build the platform 179# images. Consider it for removal. 180TARGET_GLOBAL_LDFLAGS += -m32 181 182TARGET_GLOBAL_LDFLAGS += -Wl,-z,noexecstack 183TARGET_GLOBAL_LDFLAGS += -Wl,-z,relro -Wl,-z,now 184TARGET_GLOBAL_LDFLAGS += -Wl,--warn-shared-textrel 185TARGET_GLOBAL_LDFLAGS += -Wl,--gc-sections 186 187TARGET_C_INCLUDES := \ 188 $(libc_root)/arch-x86/include \ 189 $(libc_root)/include \ 190 $(libstdc++_root)/include \ 191 $(KERNEL_HEADERS) \ 192 $(libm_root)/include \ 193 $(libm_root)/include/i387 \ 194 $(libthread_db_root)/include 195 196TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 197TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 198TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 199 200TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 201TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 202 203TARGET_STRIP_MODULE:=true 204 205TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 206 207TARGET_CUSTOM_LD_COMMAND := true 208define transform-o-to-shared-lib-inner 209$(hide) $(PRIVATE_CXX) \ 210 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 211 -nostdlib -Wl,-soname,$(notdir $@) \ 212 -shared -Bsymbolic \ 213 $(TARGET_GLOBAL_CFLAGS) \ 214 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 215 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 216 $(PRIVATE_ALL_OBJECTS) \ 217 -Wl,--whole-archive \ 218 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 219 -Wl,--no-whole-archive \ 220 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 221 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 222 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 223 $(PRIVATE_TARGET_LIBGCC) \ 224 $(PRIVATE_TARGET_FDO_LIB) \ 225 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 226 -o $@ \ 227 $(PRIVATE_LDFLAGS) \ 228 $(PRIVATE_TARGET_LIBGCC) \ 229 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) 230endef 231 232define transform-o-to-executable-inner 233$(hide) $(PRIVATE_CXX) \ 234 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 235 -nostdlib -Bdynamic \ 236 -Wl,-dynamic-linker,/system/bin/linker \ 237 -Wl,-z,nocopyreloc \ 238 -fPIE -pie \ 239 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 240 -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 241 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 242 $(PRIVATE_ALL_OBJECTS) \ 243 -Wl,--whole-archive \ 244 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 245 -Wl,--no-whole-archive \ 246 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 247 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 248 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 249 $(PRIVATE_TARGET_LIBGCC) \ 250 $(PRIVATE_TARGET_FDO_LIB) \ 251 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 252 -o $@ \ 253 $(PRIVATE_LDFLAGS) \ 254 $(PRIVATE_TARGET_LIBGCC) \ 255 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 256endef 257 258define transform-o-to-static-executable-inner 259$(hide) $(PRIVATE_CXX) \ 260 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 261 -nostdlib -Bstatic \ 262 -o $@ \ 263 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 264 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 265 $(PRIVATE_LDFLAGS) \ 266 $(PRIVATE_ALL_OBJECTS) \ 267 -Wl,--whole-archive \ 268 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 269 -Wl,--no-whole-archive \ 270 -Wl,--start-group \ 271 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 272 $(PRIVATE_TARGET_FDO_LIB) \ 273 $(PRIVATE_TARGET_LIBGCC) \ 274 -Wl,--end-group \ 275 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 276endef 277 278# Special check for x86 NDK ABI compatibility. 279# The TARGET_CPU_ABI variable should be defined in BoardConfig.mk to 'x86' 280# *only* if the platform image is compatible with the NDK x86 ABI. 281# 282# We perform a small check here to ensure that nothing bad can happen. 283# 284ifeq ($(TARGET_CPU_ABI),x86) 285 ifneq (true-true-true-true,$(ARCH_X86_HAVE_MMX)-$(ARCH_X86_HAVE_SSE)-$(ARCH_X86_HAVE_SSE2)-$(ARCH_X86_HAVE_SSE3)) 286 $(info ERROR: Your x86 platform image is not compatible with the NDK x86 ABI) 287 $(info As such, you should *not* define TARGET_CPU_ABI to 'x86' in your BoardConfig.mk) 288 $(info to ensure that your device will not be mistakenly listed as compatible by 289 $(info the Android Market. Also, it is likely that the image will fail the CTS tests) 290 $(info Please undefine TARGET_CPU_ABI in your BoardConfig.mk, or select the value 'none') 291 $(info The corresponding image will still be able to run Dalvik-based Android applications) 292 $(error Aborting build! Please fix your BoardConfig.mk) 293 endif 294endif 295