core/combo/TARGET_linux-mips.mk - platform/build - Git at Google

 #
 # Copyright (C) 2010 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #

 # Configuration for Linux on MIPS.
 # Included by combo/select.mk

 # You can set TARGET_ARCH_VARIANT to use an arch version other
 # than mips32r2-fp. Each value should correspond to a file named
 # $(BUILD_COMBOS)/arch/<name>.mk which must contain
 # makefile variable definitions similar to the preprocessor
 # defines in build/core/combo/include/arch/<combo>/AndroidConfig.h. Their
 # purpose is to allow module Android.mk files to selectively compile
 # different versions of code based upon the funtionality and
 # instructions available in a given architecture version.
 #
 # The blocks also define specific arch_variant_cflags, which
 # include defines, and compiler settings for the given architecture
 # version.
 #
 ifeq ($(strip $(TARGET_ARCH_VARIANT)),)
 TARGET_ARCH_VARIANT := mips32r2-fp
 endif

 ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),)
 TARGET_GCC_VERSION := 4.7
 else
 TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP)
 endif

 TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk
 ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),)
 $(error Unknown MIPS architecture variant: $(TARGET_ARCH_VARIANT))
 endif

 include $(TARGET_ARCH_SPECIFIC_MAKEFILE)

 # You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
 ifeq ($(strip $(TARGET_TOOLS_PREFIX)),)
 TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/mips/mipsel-linux-android-$(TARGET_GCC_VERSION)
 TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mipsel-linux-android-
 endif

 TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
 TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
 TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
 TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
 TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
 TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
 ifeq ($(TARGET_BUILD_VARIANT),user)
     TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@
 else
     TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ && \
         $(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@
 endif

 TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined

 TARGET_mips_CFLAGS :=	-O2 \
 			-fomit-frame-pointer \
 			-fno-strict-aliasing    \
 			-funswitch-loops

 # Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk
 # or in your environment to gdb debugging easier.
 # Don't forget to do a clean build.
 ifeq ($(FORCE_MIPS_DEBUGGING),true)
   TARGET_mips_CFLAGS += -fno-omit-frame-pointer
 endif

 TARGET_GLOBAL_CFLAGS += \
 			$(TARGET_mips_CFLAGS) \
 			-Ulinux -U__unix -U__unix__ -Umips \
 			-fpic -fPIE\
 			-ffunction-sections \
 			-fdata-sections \
 			-funwind-tables \
 			-Wa,--noexecstack \
 			-Werror=format-security \
 			-D_FORTIFY_SOURCE=2 \
 			$(arch_variant_cflags)

 android_config_h := $(call select-android-config-h,linux-mips)
 TARGET_ANDROID_CONFIG_CFLAGS := -include $(android_config_h) -I $(dir $(android_config_h))
 TARGET_GLOBAL_CFLAGS += $(TARGET_ANDROID_CONFIG_CFLAGS)

 # This warning causes dalvik not to build with gcc 4.6+ and -Werror.
 # We cannot turn it off blindly since the option is not available
 # in gcc-4.4.x.
 ifneq ($(filter 4.6 4.6.% 4.7 4.7.%, $(TARGET_GCC_VERSION)),)
 TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable \
                         -fno-strict-volatile-bitfields
 endif

 # This is to avoid the dreaded warning compiler message:
 #   note: the mangling of 'va_list' has changed in GCC 4.4
 #
 # The fact that the mangling changed does not affect the NDK ABI
 # very fortunately (since none of the exposed APIs used va_list
 # in their exported C++ functions). Also, GCC 4.5 has already
 # removed the warning from the compiler.
 #
 TARGET_GLOBAL_CFLAGS += -Wno-psabi

 ifneq ($(ARCH_MIPS_PAGE_SHIFT),)
 TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT)
 endif

 TARGET_GLOBAL_LDFLAGS += \
 			-Wl,-z,noexecstack \
 			-Wl,-z,relro \
 			-Wl,-z,now \
 			-Wl,--warn-shared-textrel \
 			$(arch_variant_ldflags)

 TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden

 # More flags/options can be added here
 TARGET_RELEASE_CFLAGS := \
 			-DNDEBUG \
 			-g \
 			-Wstrict-aliasing=2 \
 			-fgcse-after-reload \
 			-frerun-cse-after-loop \
 			-frename-registers

 libc_root := bionic/libc
 libm_root := bionic/libm
 libstdc++_root := bionic/libstdc++
 libthread_db_root := bionic/libthread_db


 ## on some hosts, the target cross-compiler is not available so do not run this command
 ifneq ($(wildcard $(TARGET_CC)),)
 # We compile with the global cflags to ensure that
 # any flags which affect libgcc are correctly taken
 # into account.
 TARGET_LIBGCC := \
   $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a)
 LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a)
 ifneq ($(LIBGCC_EH),libgcc_eh.a)
   TARGET_LIBGCC += $(LIBGCC_EH)
 endif
 target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
         --print-file-name=libgcov.a)
 endif

 # Define FDO (Feedback Directed Optimization) options.

 TARGET_FDO_CFLAGS:=
 TARGET_FDO_LIB:=

 ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),)
   # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation.
   # The profile will be generated on /data/local/tmp/profile on the device.
   TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO
   TARGET_FDO_LIB := $(target_libgcov)
 else
   # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations.
   # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build.
   ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),)
     TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT)
   else
     ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
       $(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.)
     endif
   endif

   # If the FDO profile directory can't be found, then FDO is off.
   ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
     TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO
     TARGET_FDO_LIB := $(target_libgcov)
   endif
 endif


 # unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
 # symlinks located in out/ to point to the appropriate kernel
 # headers. see 'config/kernel_headers.make' for more details
 #
 ifneq ($(CUSTOM_KERNEL_HEADERS),)
     KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS)
     KERNEL_HEADERS_ARCH   := $(CUSTOM_KERNEL_HEADERS)
 else
     KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common
     KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/arch-$(TARGET_ARCH)
 endif
 KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)

 TARGET_C_INCLUDES := \
 	$(libc_root)/arch-mips/include \
 	$(libc_root)/include \
 	$(libstdc++_root)/include \
 	$(KERNEL_HEADERS) \
 	$(libm_root)/include \
 	$(libm_root)/include/mips \
 	$(libthread_db_root)/include

 TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
 TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
 TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o

 TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
 TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o

 TARGET_STRIP_MODULE:=true

 TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm

 TARGET_CUSTOM_LD_COMMAND := true

 define transform-o-to-shared-lib-inner
 $(hide) $(PRIVATE_CXX) \
 	-nostdlib -Wl,-soname,$(notdir $@) \
 	-Wl,--gc-sections \
 	-Wl,-shared,-Bsymbolic \
 	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
 	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
 	$(PRIVATE_ALL_OBJECTS) \
 	-Wl,--whole-archive \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 	-Wl,--no-whole-archive \
 	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
 	$(PRIVATE_TARGET_LIBGCC) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
 	-o $@ \
 	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
 	$(PRIVATE_LDFLAGS) \
 	$(PRIVATE_TARGET_FDO_LIB) \
 	$(PRIVATE_TARGET_LIBGCC) \
 	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O))
 endef

 define transform-o-to-executable-inner
 $(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \
 	-Wl,-dynamic-linker,/system/bin/linker \
 	-Wl,--gc-sections \
 	-Wl,-z,nocopyreloc \
 	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
 	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
 	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \
 	$(PRIVATE_ALL_OBJECTS) \
 	-Wl,--whole-archive \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 	-Wl,--no-whole-archive \
 	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
 	$(PRIVATE_TARGET_LIBGCC) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
 	-o $@ \
 	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
 	$(PRIVATE_LDFLAGS) \
 	$(PRIVATE_TARGET_FDO_LIB) \
 	$(PRIVATE_TARGET_LIBGCC) \
 	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
 endef

 define transform-o-to-static-executable-inner
 $(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \
 	-Wl,--gc-sections \
 	-o $@ \
 	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
 	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \
 	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
 	$(PRIVATE_LDFLAGS) \
 	$(PRIVATE_ALL_OBJECTS) \
 	-Wl,--whole-archive \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 	-Wl,--no-whole-archive \
 	$(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \
 	-Wl,--start-group \
 	$(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
 	$(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
 	$(PRIVATE_TARGET_FDO_LIB) \
 	$(PRIVATE_TARGET_LIBGCC) \
 	-Wl,--end-group \
 	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
 endef
	#
	# Copyright (C) 2010 The Android Open Source Project
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	#

	# Configuration for Linux on MIPS.
	# Included by combo/select.mk

	# You can set TARGET_ARCH_VARIANT to use an arch version other
	# than mips32r2-fp. Each value should correspond to a file named
	# $(BUILD_COMBOS)/arch/<name>.mk which must contain
	# makefile variable definitions similar to the preprocessor
	# defines in build/core/combo/include/arch/<combo>/AndroidConfig.h. Their
	# purpose is to allow module Android.mk files to selectively compile
	# different versions of code based upon the funtionality and
	# instructions available in a given architecture version.
	#
	# The blocks also define specific arch_variant_cflags, which
	# include defines, and compiler settings for the given architecture
	# version.
	#
	ifeq ($(strip $(TARGET_ARCH_VARIANT)),)
	TARGET_ARCH_VARIANT := mips32r2-fp
	endif

	ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),)
	TARGET_GCC_VERSION := 4.7
	else
	TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP)
	endif

	TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk
	ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),)
	$(error Unknown MIPS architecture variant: $(TARGET_ARCH_VARIANT))
	endif

	include $(TARGET_ARCH_SPECIFIC_MAKEFILE)

	# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
	ifeq ($(strip $(TARGET_TOOLS_PREFIX)),)
	TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/mips/mipsel-linux-android-$(TARGET_GCC_VERSION)
	TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mipsel-linux-android-
	endif

	TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
	TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
	TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
	TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
	TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
	TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
	ifeq ($(TARGET_BUILD_VARIANT),user)
	TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@
	else
	TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ && \
	$(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@
	endif

	TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined

	TARGET_mips_CFLAGS := -O2 \
	-fomit-frame-pointer \
	-fno-strict-aliasing \
	-funswitch-loops

	# Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk
	# or in your environment to gdb debugging easier.
	# Don't forget to do a clean build.
	ifeq ($(FORCE_MIPS_DEBUGGING),true)
	TARGET_mips_CFLAGS += -fno-omit-frame-pointer
	endif

	TARGET_GLOBAL_CFLAGS += \
	$(TARGET_mips_CFLAGS) \
	-Ulinux -U__unix -U__unix__ -Umips \
	-fpic -fPIE\
	-ffunction-sections \
	-fdata-sections \
	-funwind-tables \
	-Wa,--noexecstack \
	-Werror=format-security \
	-D_FORTIFY_SOURCE=2 \
	$(arch_variant_cflags)

	android_config_h := $(call select-android-config-h,linux-mips)
	TARGET_ANDROID_CONFIG_CFLAGS := -include $(android_config_h) -I $(dir $(android_config_h))
	TARGET_GLOBAL_CFLAGS += $(TARGET_ANDROID_CONFIG_CFLAGS)

	# This warning causes dalvik not to build with gcc 4.6+ and -Werror.
	# We cannot turn it off blindly since the option is not available
	# in gcc-4.4.x.
	ifneq ($(filter 4.6 4.6.% 4.7 4.7.%, $(TARGET_GCC_VERSION)),)
	TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable \
	-fno-strict-volatile-bitfields
	endif

	# This is to avoid the dreaded warning compiler message:
	# note: the mangling of 'va_list' has changed in GCC 4.4
	#
	# The fact that the mangling changed does not affect the NDK ABI
	# very fortunately (since none of the exposed APIs used va_list
	# in their exported C++ functions). Also, GCC 4.5 has already
	# removed the warning from the compiler.
	#
	TARGET_GLOBAL_CFLAGS += -Wno-psabi

	ifneq ($(ARCH_MIPS_PAGE_SHIFT),)
	TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT)
	endif

	TARGET_GLOBAL_LDFLAGS += \
	-Wl,-z,noexecstack \
	-Wl,-z,relro \
	-Wl,-z,now \
	-Wl,--warn-shared-textrel \
	$(arch_variant_ldflags)

	TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden

	# More flags/options can be added here
	TARGET_RELEASE_CFLAGS := \
	-DNDEBUG \
	-g \
	-Wstrict-aliasing=2 \
	-fgcse-after-reload \
	-frerun-cse-after-loop \
	-frename-registers

	libc_root := bionic/libc
	libm_root := bionic/libm
	libstdc++_root := bionic/libstdc++
	libthread_db_root := bionic/libthread_db


	## on some hosts, the target cross-compiler is not available so do not run this command
	ifneq ($(wildcard $(TARGET_CC)),)
	# We compile with the global cflags to ensure that
	# any flags which affect libgcc are correctly taken
	# into account.
	TARGET_LIBGCC := \
	$(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a)
	LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a)
	ifneq ($(LIBGCC_EH),libgcc_eh.a)
	TARGET_LIBGCC += $(LIBGCC_EH)
	endif
	target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
	--print-file-name=libgcov.a)
	endif

	# Define FDO (Feedback Directed Optimization) options.

	TARGET_FDO_CFLAGS:=
	TARGET_FDO_LIB:=

	ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),)
	# Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation.
	# The profile will be generated on /data/local/tmp/profile on the device.
	TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO
	TARGET_FDO_LIB := $(target_libgcov)
	else
	# If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations.
	# Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build.
	ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),)
	TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT)
	else
	ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
	$(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.)
	endif
	endif

	# If the FDO profile directory can't be found, then FDO is off.
	ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
	TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO
	TARGET_FDO_LIB := $(target_libgcov)
	endif
	endif


	# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
	# symlinks located in out/ to point to the appropriate kernel
	# headers. see 'config/kernel_headers.make' for more details
	#
	ifneq ($(CUSTOM_KERNEL_HEADERS),)
	KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS)
	KERNEL_HEADERS_ARCH := $(CUSTOM_KERNEL_HEADERS)
	else
	KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common
	KERNEL_HEADERS_ARCH := $(libc_root)/kernel/arch-$(TARGET_ARCH)
	endif
	KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)

	TARGET_C_INCLUDES := \
	$(libc_root)/arch-mips/include \
	$(libc_root)/include \
	$(libstdc++_root)/include \
	$(KERNEL_HEADERS) \
	$(libm_root)/include \
	$(libm_root)/include/mips \
	$(libthread_db_root)/include

	TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
	TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
	TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o

	TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
	TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o

	TARGET_STRIP_MODULE:=true

	TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm

	TARGET_CUSTOM_LD_COMMAND := true

	define transform-o-to-shared-lib-inner
	$(hide) $(PRIVATE_CXX) \
	-nostdlib -Wl,-soname,$(notdir $@) \
	-Wl,--gc-sections \
	-Wl,-shared,-Bsymbolic \
	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
	$(PRIVATE_ALL_OBJECTS) \
	-Wl,--whole-archive \
	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
	-Wl,--no-whole-archive \
	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
	$(PRIVATE_TARGET_LIBGCC) \
	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
	-o $@ \
	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
	$(PRIVATE_LDFLAGS) \
	$(PRIVATE_TARGET_FDO_LIB) \
	$(PRIVATE_TARGET_LIBGCC) \
	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O))
	endef

	define transform-o-to-executable-inner
	$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \
	-Wl,-dynamic-linker,/system/bin/linker \
	-Wl,--gc-sections \
	-Wl,-z,nocopyreloc \
	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \
	$(PRIVATE_ALL_OBJECTS) \
	-Wl,--whole-archive \
	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
	-Wl,--no-whole-archive \
	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
	$(PRIVATE_TARGET_LIBGCC) \
	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
	-o $@ \
	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
	$(PRIVATE_LDFLAGS) \
	$(PRIVATE_TARGET_FDO_LIB) \
	$(PRIVATE_TARGET_LIBGCC) \
	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
	endef

	define transform-o-to-static-executable-inner
	$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \
	-Wl,--gc-sections \
	-o $@ \
	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \
	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
	$(PRIVATE_LDFLAGS) \
	$(PRIVATE_ALL_OBJECTS) \
	-Wl,--whole-archive \
	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
	-Wl,--no-whole-archive \
	$(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \
	-Wl,--start-group \
	$(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
	$(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
	$(PRIVATE_TARGET_FDO_LIB) \
	$(PRIVATE_TARGET_LIBGCC) \
	-Wl,--end-group \
	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
	endef