TARGET_linux-mips.mk revision d5dcd57d522fe855e1d1f7a1e21b979f16821b4f
1# 2# Copyright (C) 2010 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 MIPS. 18# Included by combo/select.mk 19 20# You can set TARGET_ARCH_VARIANT to use an arch version other 21# than mips32r2-fp. 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 $(TARGET_ARCH_VARIANT)),) 34TARGET_ARCH_VARIANT := mips32r2-fp 35endif 36 37ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) 38TARGET_GCC_VERSION := 4.8 39else 40TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) 41endif 42 43TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk 44ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 45$(error Unknown MIPS architecture variant: $(TARGET_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 $(TARGET_TOOLS_PREFIX)),) 52TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/mips/mipsel-linux-android-$(TARGET_GCC_VERSION) 53TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mipsel-linux-android- 54endif 55 56TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) 57TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) 58TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) 59TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) 60TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) 61TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 62ifeq ($(TARGET_BUILD_VARIANT),user) 63 TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ 64else 65 TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ && \ 66 $(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@ 67endif 68 69TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 70 71TARGET_mips_CFLAGS := -O2 \ 72 -fomit-frame-pointer \ 73 -fno-strict-aliasing \ 74 -funswitch-loops 75 76# Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk 77# or in your environment to gdb debugging easier. 78# Don't forget to do a clean build. 79ifeq ($(FORCE_MIPS_DEBUGGING),true) 80 TARGET_mips_CFLAGS += -fno-omit-frame-pointer 81endif 82 83android_config_h := $(call select-android-config-h,linux-mips) 84 85TARGET_GLOBAL_CFLAGS += \ 86 $(TARGET_mips_CFLAGS) \ 87 -Ulinux -U__unix -U__unix__ -Umips \ 88 -fpic -fPIE\ 89 -ffunction-sections \ 90 -fdata-sections \ 91 -funwind-tables \ 92 -Wa,--noexecstack \ 93 -Werror=format-security \ 94 -D_FORTIFY_SOURCE=2 \ 95 $(arch_variant_cflags) \ 96 -include $(android_config_h) \ 97 -I $(dir $(android_config_h)) 98 99# This warning causes dalvik not to build with gcc 4.6+ and -Werror. 100# We cannot turn it off blindly since the option is not available 101# in gcc-4.4.x. 102ifneq ($(filter 4.6 4.6.% 4.7 4.7.% 4.8, $(TARGET_GCC_VERSION)),) 103TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable \ 104 -fno-strict-volatile-bitfields 105endif 106 107# This is to avoid the dreaded warning compiler message: 108# note: the mangling of 'va_list' has changed in GCC 4.4 109# 110# The fact that the mangling changed does not affect the NDK ABI 111# very fortunately (since none of the exposed APIs used va_list 112# in their exported C++ functions). Also, GCC 4.5 has already 113# removed the warning from the compiler. 114# 115TARGET_GLOBAL_CFLAGS += -Wno-psabi 116 117ifneq ($(ARCH_MIPS_PAGE_SHIFT),) 118TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT) 119endif 120 121TARGET_GLOBAL_LDFLAGS += \ 122 -Wl,-z,noexecstack \ 123 -Wl,-z,relro \ 124 -Wl,-z,now \ 125 -Wl,--warn-shared-textrel \ 126 $(arch_variant_ldflags) 127 128TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 129 130# More flags/options can be added here 131TARGET_RELEASE_CFLAGS := \ 132 -DNDEBUG \ 133 -g \ 134 -Wstrict-aliasing=2 \ 135 -fgcse-after-reload \ 136 -frerun-cse-after-loop \ 137 -frename-registers 138 139libc_root := bionic/libc 140libm_root := bionic/libm 141libstdc++_root := bionic/libstdc++ 142libthread_db_root := bionic/libthread_db 143 144 145## on some hosts, the target cross-compiler is not available so do not run this command 146ifneq ($(wildcard $(TARGET_CC)),) 147# We compile with the global cflags to ensure that 148# any flags which affect libgcc are correctly taken 149# into account. 150TARGET_LIBGCC := \ 151 $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a) 152LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a) 153ifneq ($(LIBGCC_EH),libgcc_eh.a) 154 TARGET_LIBGCC += $(LIBGCC_EH) 155endif 156target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 157 --print-file-name=libgcov.a) 158endif 159 160# Define FDO (Feedback Directed Optimization) options. 161 162TARGET_FDO_CFLAGS:= 163TARGET_FDO_LIB:= 164 165ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),) 166 # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation. 167 # The profile will be generated on /data/local/tmp/profile on the device. 168 TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO 169 TARGET_FDO_LIB := $(target_libgcov) 170else 171 # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations. 172 # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build. 173 ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),) 174 TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT) 175 else 176 ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) 177 $(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.) 178 endif 179 endif 180 181 # If the FDO profile directory can't be found, then FDO is off. 182 ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) 183 TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO 184 TARGET_FDO_LIB := $(target_libgcov) 185 endif 186endif 187 188 189# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use 190# symlinks located in out/ to point to the appropriate kernel 191# headers. see 'config/kernel_headers.make' for more details 192# 193ifneq ($(CUSTOM_KERNEL_HEADERS),) 194 KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS) 195 KERNEL_HEADERS_ARCH := $(CUSTOM_KERNEL_HEADERS) 196else 197 KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common 198 KERNEL_HEADERS_ARCH := $(libc_root)/kernel/arch-$(TARGET_ARCH) 199endif 200KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 201 202TARGET_C_INCLUDES := \ 203 $(libc_root)/arch-mips/include \ 204 $(libc_root)/include \ 205 $(libstdc++_root)/include \ 206 $(KERNEL_HEADERS) \ 207 $(libm_root)/include \ 208 $(libm_root)/include/mips \ 209 $(libthread_db_root)/include 210 211TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 212TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 213TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 214 215TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 216TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 217 218TARGET_STRIP_MODULE:=true 219 220TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 221 222TARGET_CUSTOM_LD_COMMAND := true 223 224define transform-o-to-shared-lib-inner 225$(hide) $(PRIVATE_CXX) \ 226 -nostdlib -Wl,-soname,$(notdir $@) \ 227 -Wl,--gc-sections \ 228 -Wl,-shared,-Bsymbolic \ 229 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 230 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 231 $(PRIVATE_ALL_OBJECTS) \ 232 -Wl,--whole-archive \ 233 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 234 -Wl,--no-whole-archive \ 235 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 236 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 237 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 238 $(PRIVATE_TARGET_LIBGCC) \ 239 $(PRIVATE_TARGET_FDO_LIB) \ 240 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 241 -o $@ \ 242 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 243 $(PRIVATE_LDFLAGS) \ 244 $(PRIVATE_TARGET_LIBGCC) \ 245 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) 246endef 247 248define transform-o-to-executable-inner 249$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 250 -Wl,-dynamic-linker,/system/bin/linker \ 251 -Wl,--gc-sections \ 252 -Wl,-z,nocopyreloc \ 253 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 254 -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 255 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 256 $(PRIVATE_ALL_OBJECTS) \ 257 -Wl,--whole-archive \ 258 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 259 -Wl,--no-whole-archive \ 260 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 261 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 262 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 263 $(PRIVATE_TARGET_LIBGCC) \ 264 $(PRIVATE_TARGET_FDO_LIB) \ 265 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 266 -o $@ \ 267 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 268 $(PRIVATE_LDFLAGS) \ 269 $(PRIVATE_TARGET_LIBGCC) \ 270 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 271endef 272 273define transform-o-to-static-executable-inner 274$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 275 -Wl,--gc-sections \ 276 -o $@ \ 277 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 278 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 279 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 280 $(PRIVATE_LDFLAGS) \ 281 $(PRIVATE_ALL_OBJECTS) \ 282 -Wl,--whole-archive \ 283 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 284 -Wl,--no-whole-archive \ 285 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 286 -Wl,--start-group \ 287 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 288 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 289 $(PRIVATE_TARGET_FDO_LIB) \ 290 $(PRIVATE_TARGET_LIBGCC) \ 291 -Wl,--end-group \ 292 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 293endef 294