TARGET_linux-mips.mk revision 054ffd2e7c3da585ab223518569e7436858ba5e0
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)),) 38TARGET_GCC_VERSION := 4.6 39endif 40 41TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk 42ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 43$(error Unknown MIPS architecture variant: $(TARGET_ARCH_VARIANT)) 44endif 45 46include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 47 48# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 49ifeq ($(strip $(TARGET_TOOLS_PREFIX)),) 50TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/mips/mipsel-linux-android-$(TARGET_GCC_VERSION) 51TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mipsel-linux-android- 52endif 53 54# Only define these if there's actually a gcc in there. 55# The gcc toolchain does not exists for windows/cygwin. In this case, do not reference it. 56ifneq ($(wildcard $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)),) 57 TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) 58 TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) 59 TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) 60 TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) 61 TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) 62 TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 63 ifeq ($(TARGET_BUILD_VARIANT),user) 64 TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ 65 else 66 TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ && \ 67 $(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@ 68 endif 69endif 70 71TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 72 73TARGET_mips_CFLAGS := -O2 \ 74 -fomit-frame-pointer \ 75 -fno-strict-aliasing \ 76 -funswitch-loops 77 78# Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk 79# or in your environment to gdb debugging easier. 80# Don't forget to do a clean build. 81ifeq ($(FORCE_MIPS_DEBUGGING),true) 82 TARGET_mips_CFLAGS += -fno-omit-frame-pointer 83endif 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 -Werror=format-security \ 93 $(arch_variant_cflags) 94 95android_config_h := $(call select-android-config-h,linux-mips) 96TARGET_ANDROID_CONFIG_CFLAGS := -include $(android_config_h) -I $(dir $(android_config_h)) 97TARGET_GLOBAL_CFLAGS += $(TARGET_ANDROID_CONFIG_CFLAGS) 98 99# This warning causes dalvik not to build with gcc 4.6+ and -Werror. 100# We cannot turn it off blindly since the option is not available 101# in gcc-4.4.x. 102ifneq ($(filter 4.6 4.6.% 4.7 4.7.%, $(shell $(TARGET_CC) --version)),) 103TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable \ 104 -fno-strict-volatile-bitfields 105endif 106 107# This is to avoid the dreaded warning compiler message: 108# note: the mangling of 'va_list' has changed in GCC 4.4 109# 110# The fact that the mangling changed does not affect the NDK ABI 111# very fortunately (since none of the exposed APIs used va_list 112# in their exported C++ functions). Also, GCC 4.5 has already 113# removed the warning from the compiler. 114# 115TARGET_GLOBAL_CFLAGS += -Wno-psabi 116 117ifneq ($(ARCH_MIPS_PAGE_SHIFT),) 118TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT) 119endif 120 121TARGET_GLOBAL_LDFLAGS += \ 122 $(arch_variant_ldflags) 123 124TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden \ 125 -fno-use-cxa-atexit 126 127# More flags/options can be added here 128TARGET_RELEASE_CFLAGS := \ 129 -DNDEBUG \ 130 -g \ 131 -Wstrict-aliasing=2 \ 132 -fgcse-after-reload \ 133 -frerun-cse-after-loop \ 134 -frename-registers 135 136libc_root := bionic/libc 137libm_root := bionic/libm 138libstdc++_root := bionic/libstdc++ 139libthread_db_root := bionic/libthread_db 140 141 142## on some hosts, the target cross-compiler is not available so do not run this command 143ifneq ($(wildcard $(TARGET_CC)),) 144# We compile with the global cflags to ensure that 145# any flags which affect libgcc are correctly taken 146# into account. 147TARGET_LIBGCC := \ 148 $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a) 149LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a) 150ifneq ($(LIBGCC_EH),libgcc_eh.a) 151 TARGET_LIBGCC += $(LIBGCC_EH) 152endif 153endif 154 155# Define FDO (Feedback Directed Optimization) options. 156 157TARGET_FDO_CFLAGS:= 158TARGET_FDO_LIB:= 159 160target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 161 --print-file-name=libgcov.a) 162ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),) 163 # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation. 164 # The profile will be generated on /data/local/tmp/profile on the device. 165 TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO 166 TARGET_FDO_LIB := $(target_libgcov) 167else 168 # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations. 169 # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build. 170 ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),) 171 TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT) 172 else 173 ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) 174 $(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.) 175 endif 176 endif 177 178 # If the FDO profile directory can't be found, then FDO is off. 179 ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) 180 TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO 181 TARGET_FDO_LIB := $(target_libgcov) 182 endif 183endif 184 185 186# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use 187# symlinks located in out/ to point to the appropriate kernel 188# headers. see 'config/kernel_headers.make' for more details 189# 190ifneq ($(CUSTOM_KERNEL_HEADERS),) 191 KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS) 192 KERNEL_HEADERS_ARCH := $(CUSTOM_KERNEL_HEADERS) 193else 194 KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common 195 KERNEL_HEADERS_ARCH := $(libc_root)/kernel/arch-$(TARGET_ARCH) 196endif 197KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 198 199TARGET_C_INCLUDES := \ 200 $(libc_root)/arch-mips/include \ 201 $(libc_root)/include \ 202 $(libstdc++_root)/include \ 203 $(KERNEL_HEADERS) \ 204 $(libm_root)/include \ 205 $(libm_root)/include/mips \ 206 $(libthread_db_root)/include 207 208TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 209TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 210TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 211 212TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 213TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 214 215TARGET_STRIP_MODULE:=true 216 217TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 218 219TARGET_CUSTOM_LD_COMMAND := true 220 221define transform-o-to-shared-lib-inner 222$(hide) $(PRIVATE_CXX) \ 223 -nostdlib -Wl,-soname,$(notdir $@) \ 224 -Wl,--gc-sections \ 225 -shared -Bsymbolic \ 226 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 227 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 228 $(PRIVATE_ALL_OBJECTS) \ 229 -Wl,--whole-archive \ 230 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 231 -Wl,--no-whole-archive \ 232 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 233 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 234 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 235 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 236 -o $@ \ 237 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 238 $(PRIVATE_LDFLAGS) \ 239 $(PRIVATE_TARGET_FDO_LIB) \ 240 $(PRIVATE_TARGET_LIBGCC) \ 241 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) 242endef 243 244define transform-o-to-executable-inner 245$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 246 -Wl,-dynamic-linker,/system/bin/linker \ 247 -Wl,--gc-sections \ 248 -Wl,-z,nocopyreloc \ 249 -o $@ \ 250 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 251 -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 252 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 253 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 254 $(PRIVATE_ALL_OBJECTS) \ 255 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 256 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 257 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 258 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 259 $(PRIVATE_LDFLAGS) \ 260 $(PRIVATE_TARGET_FDO_LIB) \ 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 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 275 -Wl,--start-group \ 276 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 277 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 278 $(PRIVATE_TARGET_FDO_LIB) \ 279 $(PRIVATE_TARGET_LIBGCC) \ 280 -Wl,--end-group \ 281 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 282endef 283