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1e1241ce3d4259bcc4a0039ed68fc5b3fc8069b5
build/core/combo/TARGET_linux-arm.mk
Ying Wang 0eb35626da Add extra libgcc.a only for unbundled build. 
We can save some space for platform build with this.
Previously an extra libgcc.a was put before libc.so so libraries built
against new platform can run on old platforms. This is needed only for
unbundled build.

Bug: 8805022
Bug: 8247455

Change-Id: I3c3e0092b06ec3804659d5cae048d29e0d2bf7ad
2013-05-03 14:38:36 -07:00

303 lines
11 KiB
Makefile
Raw Blame History

#
# Copyright (C) 2006 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 ARM.
# Included by combo/select.mk
# You can set TARGET_ARCH_VARIANT to use an arch version other
# than ARMv5TE. 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 $(TARGET_ARCH_VARIANT)),)
TARGET_ARCH_VARIANT := armv5te
endif
ifeq ($(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 ARM architecture version: $(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)/arm/arm-linux-androideabi-$(TARGET_GCC_VERSION)
TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/arm-linux-androideabi-
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 $@ && \
$(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@
endif
TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
TARGET_arm_CFLAGS := -O2 \
-fomit-frame-pointer \
-fstrict-aliasing \
-funswitch-loops
# Modules can choose to compile some source as thumb.
TARGET_thumb_CFLAGS := -mthumb \
-Os \
-fomit-frame-pointer \
-fno-strict-aliasing
# Set FORCE_ARM_DEBUGGING to "true" in your buildspec.mk
# or in your environment to force a full arm build, even for
# files that are normally built as thumb; this can make
# gdb debugging easier. Don't forget to do a clean build.
#
# NOTE: if you try to build a -O0 build with thumb, several
# of the libraries (libpv, libwebcore, libkjs) need to be built
# with -mlong-calls. When built at -O0, those libraries are
# too big for a thumb "BL <label>" to go from one end to the other.
ifeq ($(FORCE_ARM_DEBUGGING),true)
TARGET_arm_CFLAGS += -fno-omit-frame-pointer -fno-strict-aliasing
TARGET_thumb_CFLAGS += -marm -fno-omit-frame-pointer
endif
TARGET_GLOBAL_CFLAGS += \
-msoft-float -fpic -fPIE \
-ffunction-sections \
-fdata-sections \
-funwind-tables \
-fstack-protector \
-Wa,--noexecstack \
-Werror=format-security \
-D_FORTIFY_SOURCE=1 \
-fno-short-enums \
$(arch_variant_cflags)
android_config_h := $(call select-android-config-h,linux-arm)
TARGET_ANDROID_CONFIG_CFLAGS := -include $(android_config_h) -I $(dir $(android_config_h))
TARGET_GLOBAL_CFLAGS += $(TARGET_ANDROID_CONFIG_CFLAGS)
# This warning causes dalvik not to build with gcc 4.6+ and -Werror.
# We cannot turn it off blindly since the option is not available
# in gcc-4.4.x. We also want to disable sincos optimization globally
# by turning off the builtin sin function.
ifneq ($(filter 4.6 4.6.% 4.7 4.7.%, $(TARGET_GCC_VERSION)),)
TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable -fno-builtin-sin \
-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
TARGET_GLOBAL_LDFLAGS += \
-Wl,-z,noexecstack \
-Wl,-z,relro \
-Wl,-z,now \
-Wl,--warn-shared-textrel \
-Wl,--fatal-warnings \
-Wl,--icf=safe \
$(arch_variant_ldflags)
TARGET_GLOBAL_CFLAGS += -mthumb-interwork
TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden
# More flags/options can be added here
TARGET_RELEASE_CFLAGS := \
-DNDEBUG \
-g \
-Wstrict-aliasing=2 \
-fgcse-after-reload \
-frerun-cse-after-loop \
-frename-registers
libc_root := bionic/libc
libm_root := bionic/libm
libstdc++_root := bionic/libstdc++
libthread_db_root := bionic/libthread_db
## on some hosts, the target cross-compiler is not available so do not run this command
ifneq ($(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-libgcc-file-name)
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-arm/include \
$(libc_root)/include \
$(libstdc++_root)/include \
$(KERNEL_HEADERS) \
$(libm_root)/include \
$(libm_root)/include/arm \
$(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) \
$(if $(TARGET_BUILD_APPS),$(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) \
$(if $(TARGET_BUILD_APPS),$(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
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