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build/core/combo/TARGET_linux-x86.mk
Shinichiro Hamaji 0e7587a9ea Use .KATI_RESTAT to reduce unnecessary rebuilds of binaries 
When a shared object is rebuilt, all dependent libraries and
executables are rebuilt. Such rebuild is unnecessary when there
is no interface change. With this patch, .toc files will be
generated for all .so files. The rule which generates .toc files
has ninja's restat=1 and .toc files are not changed ninja won't
rebuild dependent targets.

Performance:

$ m && touch bionic/libc/stdio/stdio.c && time m
Before: 1m03s (2563 targets)
After: 21s (90 targets)

Bug: 24597504
Change-Id: Ia5dd950273d143f4e99eee8bef7478f1a94cd138
2015-11-04 15:23:59 +09:00

152 lines
6.3 KiB
Makefile
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#
# 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 x86 as a target.
# Included by combo/select.mk
# Provide a default variant.
ifeq ($(strip $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT)),)
TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT := x86
endif
# Decouple NDK library selection with platform compiler version
$(combo_2nd_arch_prefix)TARGET_NDK_GCC_VERSION := 4.9
ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),)
$(combo_2nd_arch_prefix)TARGET_GCC_VERSION := 4.9
else
$(combo_2nd_arch_prefix)TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP)
endif
# Include the arch-variant-specific configuration file.
# Its role is to define various ARCH_X86_HAVE_XXX feature macros,
# plus initial values for TARGET_GLOBAL_CFLAGS
#
TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_$(combo_2nd_arch_prefix)ARCH)/$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT).mk
ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),)
$(error Unknown $(TARGET_$(combo_2nd_arch_prefix)ARCH) architecture version: $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))
endif
include $(TARGET_ARCH_SPECIFIC_MAKEFILE)
include $(BUILD_SYSTEM)/combo/fdo.mk
# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
ifeq ($(strip $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)),)
$(combo_2nd_arch_prefix)TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/x86/x86_64-linux-android-$($(combo_2nd_arch_prefix)TARGET_GCC_VERSION)
$(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX := $($(combo_2nd_arch_prefix)TARGET_TOOLCHAIN_ROOT)/bin/x86_64-linux-android-
endif
$(combo_2nd_arch_prefix)TARGET_CC := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)gcc
$(combo_2nd_arch_prefix)TARGET_CXX := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)g++
$(combo_2nd_arch_prefix)TARGET_AR := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)ar
$(combo_2nd_arch_prefix)TARGET_OBJCOPY := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)objcopy
$(combo_2nd_arch_prefix)TARGET_LD := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)ld
$(combo_2nd_arch_prefix)TARGET_READELF := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)readelf
$(combo_2nd_arch_prefix)TARGET_STRIP := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)strip
$(combo_2nd_arch_prefix)TARGET_NM := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)nm
define $(combo_var_prefix)transform-shared-lib-to-toc
$(call _gen_toc_command_for_elf,$(1),$(2))
endef
ifneq ($(wildcard $($(combo_2nd_arch_prefix)TARGET_CC)),)
$(combo_2nd_arch_prefix)TARGET_LIBGCC := \
$(shell $($(combo_2nd_arch_prefix)TARGET_CC) -m32 -print-file-name=libgcc.a)
$(combo_2nd_arch_prefix)TARGET_LIBATOMIC := \
$(shell $($(combo_2nd_arch_prefix)TARGET_CC) -m32 -print-file-name=libatomic.a)
$(combo_2nd_arch_prefix)TARGET_LIBGCOV := \
$(shell $($(combo_2nd_arch_prefix)TARGET_CC) -m32 -print-file-name=libgcov.a)
endif
$(combo_2nd_arch_prefix)TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
libc_root := bionic/libc
libm_root := bionic/libm
KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
KERNEL_HEADERS_COMMON += $(libc_root)/kernel/common
KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-x86 # x86 covers both x86 and x86_64.
KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += \
-O2 \
-Wa,--noexecstack \
-Werror=format-security \
-D_FORTIFY_SOURCE=2 \
-Wstrict-aliasing=2 \
-ffunction-sections \
-finline-functions \
-finline-limit=300 \
-fno-short-enums \
-fstrict-aliasing \
-funswitch-loops \
-funwind-tables \
-fstack-protector \
-m32 \
-no-canonical-prefixes \
-fno-canonical-system-headers \
$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += $(arch_variant_cflags)
ifeq ($(ARCH_X86_HAVE_SSSE3),true) # yes, really SSSE3, not SSE3!
$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -DUSE_SSSE3 -mssse3
endif
ifeq ($(ARCH_X86_HAVE_SSE4),true)
$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -msse4
endif
ifeq ($(ARCH_X86_HAVE_SSE4_1),true)
$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -msse4.1
endif
ifeq ($(ARCH_X86_HAVE_SSE4_2),true)
$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -msse4.2
endif
ifeq ($(ARCH_X86_HAVE_AVX),true)
$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -mavx
endif
ifeq ($(ARCH_X86_HAVE_AES_NI),true)
$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -maes
endif
$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += -m32
$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += -Wl,-z,noexecstack
$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += -Wl,-z,relro -Wl,-z,now
$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += -Wl,--build-id=md5
$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += -Wl,--warn-shared-textrel
$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += -Wl,--fatal-warnings
$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += -Wl,--gc-sections
$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += -Wl,--hash-style=gnu
$(combo_2nd_arch_prefix)TARGET_C_INCLUDES := \
$(libc_root)/arch-x86/include \
$(libc_root)/include \
$(KERNEL_HEADERS) \
$(libm_root)/include \
$(libm_root)/include/i387 \
$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_STATIC_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_DYNAMIC_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
$(combo_2nd_arch_prefix)TARGET_CRTEND_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_SO_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
$(combo_2nd_arch_prefix)TARGET_CRTEND_SO_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
$(combo_2nd_arch_prefix)TARGET_PACK_MODULE_RELOCATIONS := true
$(combo_2nd_arch_prefix)TARGET_LINKER := /system/bin/linker
$(combo_2nd_arch_prefix)TARGET_GLOBAL_YASM_FLAGS := -f elf32 -m x86
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