TARGET_linux-mips.mk revision e1d44c3b4acef1319c34514e8d4ee78127b895ef
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 = $(PRIVATE_STRIP) --strip-all $< -o $@ 64else 65 TARGET_STRIP_COMMAND = $(PRIVATE_STRIP) --strip-all $< -o $@ && \ 66 $(PRIVATE_OBJCOPY) --add-gnu-debuglink=$< $@ 67endif 68 69TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 70 71TARGET_mips_CFLAGS := -O2 \ 72 -fomit-frame-pointer \ 73 -fno-strict-aliasing \ 74 -funswitch-loops 75 76# Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk 77# or in your environment to gdb debugging easier. 78# Don't forget to do a clean build. 79ifeq ($(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 -Wl,--fatal-warnings \ 127 $(arch_variant_ldflags) 128 129TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 130 131# More flags/options can be added here 132TARGET_RELEASE_CFLAGS := \ 133 -DNDEBUG \ 134 -g \ 135 -Wstrict-aliasing=2 \ 136 -fgcse-after-reload \ 137 -frerun-cse-after-loop \ 138 -frename-registers 139 140libc_root := bionic/libc 141libm_root := bionic/libm 142libstdc++_root := bionic/libstdc++ 143libthread_db_root := bionic/libthread_db 144 145 146## on some hosts, the target cross-compiler is not available so do not run this command 147ifneq ($(wildcard $(TARGET_CC)),) 148# We compile with the global cflags to ensure that 149# any flags which affect libgcc are correctly taken 150# into account. 151TARGET_LIBGCC := \ 152 $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a) 153LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a) 154ifneq ($(LIBGCC_EH),libgcc_eh.a) 155 TARGET_LIBGCC += $(LIBGCC_EH) 156endif 157target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 158 --print-file-name=libgcov.a) 159endif 160 161# Define FDO (Feedback Directed Optimization) options. 162 163TARGET_FDO_CFLAGS:= 164TARGET_FDO_LIB:= 165 166ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),) 167 # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation. 168 # The profile will be generated on /data/local/tmp/profile on the device. 169 TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO 170 TARGET_FDO_LIB := $(target_libgcov) 171else 172 # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations. 173 # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build. 174 ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),) 175 TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT) 176 else 177 ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) 178 $(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.) 179 endif 180 endif 181 182 # If the FDO profile directory can't be found, then FDO is off. 183 ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) 184 TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO 185 TARGET_FDO_LIB := $(target_libgcov) 186 endif 187endif 188 189 190KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 191KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) 192KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 193 194TARGET_C_INCLUDES := \ 195 $(libc_root)/arch-mips/include \ 196 $(libc_root)/include \ 197 $(libstdc++_root)/include \ 198 $(KERNEL_HEADERS) \ 199 $(libm_root)/include \ 200 $(libm_root)/include/mips \ 201 $(libthread_db_root)/include 202 203TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 204TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 205TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 206 207TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 208TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 209 210TARGET_STRIP_MODULE:=true 211 212TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 213 214TARGET_CUSTOM_LD_COMMAND := true 215 216define transform-o-to-shared-lib-inner 217$(hide) $(PRIVATE_CXX) \ 218 -nostdlib -Wl,-soname,$(notdir $@) \ 219 -Wl,--gc-sections \ 220 -Wl,-shared,-Bsymbolic \ 221 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 222 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 223 $(PRIVATE_ALL_OBJECTS) \ 224 -Wl,--whole-archive \ 225 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 226 -Wl,--no-whole-archive \ 227 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 228 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 229 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 230 $(PRIVATE_TARGET_LIBGCC) \ 231 $(PRIVATE_TARGET_FDO_LIB) \ 232 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 233 -o $@ \ 234 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 235 $(PRIVATE_LDFLAGS) \ 236 $(PRIVATE_TARGET_LIBGCC) \ 237 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) 238endef 239 240define transform-o-to-executable-inner 241$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 242 -Wl,-dynamic-linker,/system/bin/linker \ 243 -Wl,--gc-sections \ 244 -Wl,-z,nocopyreloc \ 245 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 246 -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 247 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 248 $(PRIVATE_ALL_OBJECTS) \ 249 -Wl,--whole-archive \ 250 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 251 -Wl,--no-whole-archive \ 252 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 253 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 254 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 255 $(PRIVATE_TARGET_LIBGCC) \ 256 $(PRIVATE_TARGET_FDO_LIB) \ 257 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 258 -o $@ \ 259 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 260 $(PRIVATE_LDFLAGS) \ 261 $(PRIVATE_TARGET_LIBGCC) \ 262 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 263endef 264 265define transform-o-to-static-executable-inner 266$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 267 -Wl,--gc-sections \ 268 -o $@ \ 269 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 270 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 271 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 272 $(PRIVATE_LDFLAGS) \ 273 $(PRIVATE_ALL_OBJECTS) \ 274 -Wl,--whole-archive \ 275 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 276 -Wl,--no-whole-archive \ 277 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 278 -Wl,--start-group \ 279 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 280 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 281 $(PRIVATE_TARGET_FDO_LIB) \ 282 $(PRIVATE_TARGET_LIBGCC) \ 283 -Wl,--end-group \ 284 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 285endef 286