TARGET_linux-x86.mk revision 52b63178d9e7da82301ecbc7d673154242b1c9a6
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 $(TARGET_ARCH_VARIANT)),) 22TARGET_ARCH_VARIANT := x86 23endif 24 25# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 26ifeq ($(strip $(TARGET_TOOLS_PREFIX)),) 27TARGET_TOOLS_PREFIX := \ 28 prebuilts/gcc/$(HOST_PREBUILT_TAG)/x86/i686-linux-android-4.6/bin/i686-linux-android- 29endif 30 31TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) 32TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) 33TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) 34TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) 35TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) 36TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 37 38ifeq ($(TARGET_BUILD_VARIANT),user) 39TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-debug $< -o $@ 40else 41TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-debug $< -o $@ && \ 42 $(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@ 43endif 44 45ifneq ($(wildcard $(TARGET_CC)),) 46TARGET_LIBGCC := \ 47 $(shell $(TARGET_CC) -m32 -print-file-name=libgcc.a) 48endif 49 50TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 51 52libc_root := bionic/libc 53libm_root := bionic/libm 54libstdc++_root := bionic/libstdc++ 55libthread_db_root := bionic/libthread_db 56 57# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use 58# symlinks located in out/ to point to the appropriate kernel 59# headers. see 'config/kernel_headers.make' for more details 60# 61ifneq ($(CUSTOM_KERNEL_HEADERS),) 62 KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS) 63 KERNEL_HEADERS_ARCH := $(CUSTOM_KERNEL_HEADERS) 64else 65 KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common 66 KERNEL_HEADERS_ARCH := $(libc_root)/kernel/arch-$(TARGET_ARCH) 67endif 68KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 69 70TARGET_GLOBAL_CFLAGS += \ 71 -O2 \ 72 -Ulinux \ 73 -Wa,--noexecstack \ 74 -Werror=format-security \ 75 -Wstrict-aliasing=2 \ 76 -fPIC \ 77 -ffunction-sections \ 78 -finline-functions \ 79 -finline-limit=300 \ 80 -fno-inline-functions-called-once \ 81 -fno-short-enums \ 82 -fstrict-aliasing \ 83 -funswitch-loops \ 84 -funwind-tables \ 85 -include $(call select-android-config-h,target_linux-x86) 86 87# Needs to be fixed later 88#TARGET_GLOBAL_CFLAGS += \ 89# -fstack-protector 90 91# Needs to be added for RELEASE 92#TARGET_GLOBAL_CFLAGS += \ 93# -DNDEBUG 94 95TARGET_GLOBAL_CPPFLAGS += \ 96 -fno-use-cxa-atexit 97 98ifeq ($(TARGET_ARCH_VARIANT),x86-atom) 99 # Basic ATOM flags. 100 TARGET_GLOBAL_CFLAGS += -march=atom -mstackrealign -mfpmath=sse 101 102 # There are various levels of ATOM processors out there. Different ones have different 103 # capabilities. This first define matches the NDK's minimum ABI requirements. 104 # Note: Not all of the flags set here are actually used in Android. They are provided 105 # to allow for the addition of corresponding optimizations. 106 TARGET_GLOBAL_CFLAGS += -DUSE_MMX -DUSE_SSE -DUSE_SSE2 -DUSE_SSE3 107 108 # If you wish to build a BSP that will only be used on hardware that has additional 109 # available instructions, enable them here. By default, this is commented off so that 110 # the default images can run on all processors that are NDK ABI compliant. 111 # TARGET_GLOBAL_CFLAGS += -DUSE_SSSE3 112else 113 # Plain 'x86' - lowest common denominator. This should run pretty much on any hardware. 114 # 115 # Note: The NDK's ABI (see the NDK ABI documentation) requires many of the more recent 116 # instruction set additions. You can build an "x86" BSP that will run on very old hardware, 117 # but it won't be able to run much of the x86 NDK compliant code. 118 TARGET_GLOBAL_CFLAGS += -march=i686 119endif 120 121TARGET_GLOBAL_CFLAGS += -mbionic 122TARGET_GLOBAL_CFLAGS += -D__ANDROID__ 123 124TARGET_GLOBAL_LDFLAGS += -m32 125TARGET_GLOBAL_LDFLAGS += -Wl,-z,noexecstack 126TARGET_GLOBAL_LDFLAGS += -Wl,--gc-sections 127 128TARGET_C_INCLUDES := \ 129 $(libc_root)/arch-x86/include \ 130 $(libc_root)/include \ 131 $(libstdc++_root)/include \ 132 $(KERNEL_HEADERS) \ 133 $(libm_root)/include \ 134 $(libm_root)/include/i387 \ 135 $(libthread_db_root)/include 136 137TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_static.o 138TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_dynamic.o 139TARGET_CRTEND_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_android.o 140 141TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_so.o 142TARGET_CRTEND_SO_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_so.o 143 144TARGET_STRIP_MODULE:=true 145 146TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 147 148TARGET_CUSTOM_LD_COMMAND := true 149define transform-o-to-shared-lib-inner 150$(hide) $(PRIVATE_CXX) \ 151 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 152 -nostdlib -Wl,-soname,$(notdir $@) \ 153 -shared -Bsymbolic \ 154 $(TARGET_GLOBAL_CFLAGS) \ 155 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 156 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 157 $(PRIVATE_ALL_OBJECTS) \ 158 -Wl,--whole-archive \ 159 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 160 -Wl,--no-whole-archive \ 161 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 162 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 163 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 164 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 165 -o $@ \ 166 $(PRIVATE_LDFLAGS) \ 167 $(PRIVATE_TARGET_LIBGCC) \ 168 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) 169endef 170 171 172define transform-o-to-executable-inner 173$(hide) $(PRIVATE_CXX) \ 174 $(TARGET_GLOBAL_LDFLAGS) \ 175 -nostdlib -Bdynamic \ 176 -Wl,-dynamic-linker,/system/bin/linker \ 177 -Wl,--copy-dt-needed-entries \ 178 -Wl,-z,nocopyreloc \ 179 -o $@ \ 180 $(TARGET_GLOBAL_LD_DIRS) \ 181 -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 182 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 183 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTBEGIN_DYNAMIC_O)) \ 184 $(PRIVATE_ALL_OBJECTS) \ 185 -Wl,--whole-archive \ 186 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 187 -Wl,--no-whole-archive \ 188 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 189 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 190 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 191 $(PRIVATE_LDFLAGS) \ 192 $(TARGET_LIBGCC) \ 193 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTEND_O)) 194endef 195 196define transform-o-to-static-executable-inner 197$(hide) $(PRIVATE_CXX) \ 198 $(TARGET_GLOBAL_LDFLAGS) \ 199 -nostdlib -Bstatic \ 200 -o $@ \ 201 $(TARGET_GLOBAL_LD_DIRS) \ 202 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTBEGIN_STATIC_O)) \ 203 $(PRIVATE_LDFLAGS) \ 204 $(PRIVATE_ALL_OBJECTS) \ 205 -Wl,--whole-archive \ 206 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 207 -Wl,--no-whole-archive \ 208 -Wl,--start-group \ 209 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 210 $(TARGET_LIBGCC) \ 211 -Wl,--end-group \ 212 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTEND_O)) 213endef 214