TARGET_linux-mips.mk revision 07a6db8733da14ac6b0161468c697a1413a0ce8a
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# $(BUILD_COMBOS)/arch/<name>.mk which must contain 23# makefile variable definitions similar to the preprocessor 24# defines in system/core/include/arch/<combo>/AndroidConfig.h. Their 25# purpose is to allow module Android.mk files to selectively compile 26# different versions of code based upon the funtionality and 27# instructions available in a given architecture version. 28# 29# The blocks also define specific arch_variant_cflags, which 30# include defines, and compiler settings for the given architecture 31# version. 32# 33ifeq ($(strip $(TARGET_ARCH_VARIANT)),) 34TARGET_ARCH_VARIANT := mips32r2-fp 35endif 36 37TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk 38ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 39$(error Unknown MIPS architecture variant: $(TARGET_ARCH_VARIANT)) 40endif 41 42include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 43 44# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 45ifeq ($(strip $(TARGET_TOOLS_PREFIX)),) 46TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/mips/mipsel-linux-android-$(TARGET_GCC_VERSION) 47TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mipsel-linux-android- 48endif 49 50# Only define these if there's actually a gcc in there. 51# The gcc toolchain does not exists for windows/cygwin. In this case, do not reference it. 52ifneq ($(wildcard $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)),) 53 TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) 54 TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) 55 TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) 56 TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) 57 TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) 58 TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 59 ifeq ($(TARGET_BUILD_VARIANT),user) 60 TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ 61 else 62 TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ && \ 63 $(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@ 64 endif 65endif 66 67TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 68 69TARGET_mips_CFLAGS := -O2 \ 70 -fomit-frame-pointer \ 71 -fno-strict-aliasing \ 72 -funswitch-loops 73 74# Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk 75# or in your environment to gdb debugging easier. 76# Don't forget to do a clean build. 77ifeq ($(FORCE_MIPS_DEBUGGING),true) 78 TARGET_mips_CFLAGS += -fno-omit-frame-pointer 79endif 80 81android_config_h := $(call select-android-config-h,linux-mips) 82arch_include_dir := $(dir $(android_config_h)) 83 84TARGET_GLOBAL_CFLAGS += \ 85 $(TARGET_mips_CFLAGS) \ 86 -Ulinux -U__unix -U__unix__ -Umips \ 87 -fpic -fPIE\ 88 -ffunction-sections \ 89 -fdata-sections \ 90 -funwind-tables \ 91 -Werror=format-security \ 92 $(arch_variant_cflags) \ 93 -include $(android_config_h) \ 94 -I $(arch_include_dir) 95 96# This warning causes dalvik not to build with gcc 4.6+ and -Werror. 97# We cannot turn it off blindly since the option is not available 98# in gcc-4.4.x. 99ifneq ($(filter 4.6 4.6.% 4.7 4.7.%, $(shell $(TARGET_CC) --version)),) 100TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable \ 101 -fno-strict-volatile-bitfields 102endif 103 104# This is to avoid the dreaded warning compiler message: 105# note: the mangling of 'va_list' has changed in GCC 4.4 106# 107# The fact that the mangling changed does not affect the NDK ABI 108# very fortunately (since none of the exposed APIs used va_list 109# in their exported C++ functions). Also, GCC 4.5 has already 110# removed the warning from the compiler. 111# 112TARGET_GLOBAL_CFLAGS += -Wno-psabi 113 114ifneq ($(ARCH_MIPS_PAGE_SHIFT),) 115TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT) 116endif 117 118TARGET_GLOBAL_LDFLAGS += \ 119 $(arch_variant_ldflags) 120 121TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden \ 122 -fno-use-cxa-atexit 123 124# More flags/options can be added here 125TARGET_RELEASE_CFLAGS := \ 126 -DNDEBUG \ 127 -g \ 128 -Wstrict-aliasing=2 \ 129 -fgcse-after-reload \ 130 -frerun-cse-after-loop \ 131 -frename-registers 132 133libc_root := bionic/libc 134libm_root := bionic/libm 135libstdc++_root := bionic/libstdc++ 136libthread_db_root := bionic/libthread_db 137 138 139## on some hosts, the target cross-compiler is not available so do not run this command 140ifneq ($(wildcard $(TARGET_CC)),) 141# We compile with the global cflags to ensure that 142# any flags which affect libgcc are correctly taken 143# into account. 144TARGET_LIBGCC := \ 145 $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a) 146LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a) 147ifneq ($(LIBGCC_EH),libgcc_eh.a) 148 TARGET_LIBGCC += $(LIBGCC_EH) 149endif 150endif 151 152# Define FDO (Feedback Directed Optimization) options. 153 154TARGET_FDO_CFLAGS:= 155TARGET_FDO_LIB:= 156 157target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 158 --print-file-name=libgcov.a) 159ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),) 160 # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation. 161 # The profile will be generated on /data/local/tmp/profile on the device. 162 TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO 163 TARGET_FDO_LIB := $(target_libgcov) 164else 165 # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations. 166 # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build. 167 ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),) 168 TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT) 169 else 170 ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) 171 $(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.) 172 endif 173 endif 174 175 # If the FDO profile directory can't be found, then FDO is off. 176 ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) 177 TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO 178 TARGET_FDO_LIB := $(target_libgcov) 179 endif 180endif 181 182 183# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use 184# symlinks located in out/ to point to the appropriate kernel 185# headers. see 'config/kernel_headers.make' for more details 186# 187ifneq ($(CUSTOM_KERNEL_HEADERS),) 188 KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS) 189 KERNEL_HEADERS_ARCH := $(CUSTOM_KERNEL_HEADERS) 190else 191 KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common 192 KERNEL_HEADERS_ARCH := $(libc_root)/kernel/arch-$(TARGET_ARCH) 193endif 194KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 195 196TARGET_C_INCLUDES := \ 197 $(libc_root)/arch-mips/include \ 198 $(libc_root)/include \ 199 $(libstdc++_root)/include \ 200 $(KERNEL_HEADERS) \ 201 $(libm_root)/include \ 202 $(libm_root)/include/mips \ 203 $(libthread_db_root)/include 204 205TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_static.o 206TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_dynamic.o 207TARGET_CRTEND_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_android.o 208 209TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_so.o 210TARGET_CRTEND_SO_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_so.o 211 212TARGET_STRIP_MODULE:=true 213 214TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 215 216TARGET_CUSTOM_LD_COMMAND := true 217 218define transform-o-to-shared-lib-inner 219$(hide) $(PRIVATE_CXX) \ 220 -nostdlib -Wl,-soname,$(notdir $@) \ 221 -Wl,--gc-sections \ 222 -shared -Bsymbolic \ 223 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 224 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 225 $(PRIVATE_ALL_OBJECTS) \ 226 -Wl,--whole-archive \ 227 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 228 -Wl,--no-whole-archive \ 229 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 230 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 231 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 232 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 233 -o $@ \ 234 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 235 $(PRIVATE_LDFLAGS) \ 236 $(PRIVATE_TARGET_FDO_LIB) \ 237 $(PRIVATE_TARGET_LIBGCC) \ 238 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) 239endef 240 241define transform-o-to-executable-inner 242$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ 243 -Wl,-dynamic-linker,/system/bin/linker \ 244 -Wl,--gc-sections \ 245 -Wl,-z,nocopyreloc \ 246 -o $@ \ 247 $(TARGET_GLOBAL_LD_DIRS) \ 248 -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 249 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 250 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTBEGIN_DYNAMIC_O)) \ 251 $(PRIVATE_ALL_OBJECTS) \ 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 $(TARGET_GLOBAL_LDFLAGS) \ 256 $(PRIVATE_LDFLAGS) \ 257 $(TARGET_FDO_LIB) \ 258 $(TARGET_LIBGCC) \ 259 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTEND_O)) 260endef 261 262define transform-o-to-static-executable-inner 263$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 264 -Wl,--gc-sections \ 265 -o $@ \ 266 $(TARGET_GLOBAL_LD_DIRS) \ 267 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTBEGIN_STATIC_O)) \ 268 $(TARGET_GLOBAL_LDFLAGS) \ 269 $(PRIVATE_LDFLAGS) \ 270 $(PRIVATE_ALL_OBJECTS) \ 271 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 272 -Wl,--start-group \ 273 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 274 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 275 $(TARGET_FDO_LIB) \ 276 $(TARGET_LIBGCC) \ 277 -Wl,--end-group \ 278 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTEND_O)) 279endef 280