TARGET_linux-mips64.mk revision c09eaa7a44e24217397f23e5eadc91062716d900
1# 2# Copyright (C) 2013 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 MIPS64. 18# Included by combo/select.mk 19 20# You can set TARGET_ARCH_VARIANT to use an arch version other 21# than mips64r6. 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 $(TARGET_ARCH_VARIANT)),) 34TARGET_ARCH_VARIANT := mips64r6 35endif 36 37# Decouple NDK library selection with platform compiler version 38TARGET_NDK_GCC_VERSION := 4.9 39 40ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) 41TARGET_GCC_VERSION := 4.9 42else 43TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) 44endif 45 46TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk 47ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 48$(error Unknown MIPS architecture variant: $(TARGET_ARCH_VARIANT)) 49endif 50 51include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 52include $(BUILD_SYSTEM)/combo/fdo.mk 53 54# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 55ifeq ($(strip $(TARGET_TOOLS_PREFIX)),) 56TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/mips/mips64el-linux-android-$(TARGET_GCC_VERSION) 57TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mips64el-linux-android- 58endif 59 60TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc 61TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++ 62TARGET_AR := $(TARGET_TOOLS_PREFIX)ar 63TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy 64TARGET_LD := $(TARGET_TOOLS_PREFIX)ld 65TARGET_READELF := $(TARGET_TOOLS_PREFIX)readelf 66TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip 67 68TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 69 70TARGET_mips_CFLAGS := -O2 \ 71 -fomit-frame-pointer \ 72 -fno-strict-aliasing \ 73 -funswitch-loops 74 75# Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk 76# or in your environment to gdb debugging easier. 77# Don't forget to do a clean build. 78ifeq ($(FORCE_MIPS_DEBUGGING),true) 79 TARGET_mips_CFLAGS += -fno-omit-frame-pointer 80endif 81 82# For mips r6 (both 32bit and 64bit), GDB cannot stop on a breakpoint 83# if it is set on a compact branch. Turn generation of compact 84# branches off, to allow GDB to work properly. 85# Note: JIC instruction is not affected by this flag. 86# TODO: Remove this after GDB is fixed. 87ifeq ($(TARGET_ARCH),mips64) 88TARGET_mips_CFLAGS += -mcompact-branches=never 89endif 90 91android_config_h := $(call select-android-config-h,linux-mips64) 92 93TARGET_GLOBAL_CFLAGS += \ 94 $(TARGET_mips_CFLAGS) \ 95 -U__unix -U__unix__ -Umips \ 96 -ffunction-sections \ 97 -fdata-sections \ 98 -funwind-tables \ 99 -Wa,--noexecstack \ 100 -Werror=format-security \ 101 -D_FORTIFY_SOURCE=2 \ 102 -no-canonical-prefixes \ 103 -fno-canonical-system-headers \ 104 $(arch_variant_cflags) \ 105 -include $(android_config_h) \ 106 -I $(dir $(android_config_h)) 107 108# Help catch common 32/64-bit errors. 109TARGET_GLOBAL_CFLAGS += \ 110 -Werror=pointer-to-int-cast \ 111 -Werror=int-to-pointer-cast \ 112 -Werror=implicit-function-declaration \ 113 114ifneq ($(ARCH_MIPS_PAGE_SHIFT),) 115TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT) 116endif 117 118TARGET_GLOBAL_LDFLAGS += \ 119 -Wl,-z,noexecstack \ 120 -Wl,-z,relro \ 121 -Wl,-z,now \ 122 -Wl,--build-id=md5 \ 123 -Wl,--warn-shared-textrel \ 124 -Wl,--fatal-warnings \ 125 $(arch_variant_ldflags) 126 127TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 128 129# More flags/options can be added here 130TARGET_RELEASE_CFLAGS := \ 131 -DNDEBUG \ 132 -g \ 133 -Wstrict-aliasing=2 \ 134 -fgcse-after-reload \ 135 -frerun-cse-after-loop \ 136 -frename-registers 137 138libc_root := bionic/libc 139libm_root := bionic/libm 140 141 142## on some hosts, the target cross-compiler is not available so do not run this command 143ifneq ($(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) 149TARGET_LIBATOMIC := \ 150 $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libatomic.a) 151LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a) 152ifneq ($(LIBGCC_EH),libgcc_eh.a) 153 TARGET_LIBGCC += $(LIBGCC_EH) 154endif 155TARGET_LIBGCOV := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 156 --print-file-name=libgcov.a) 157endif 158 159KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 160KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-mips 161# TODO: perhaps use $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) instead of asm-mips ? 162KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 163 164TARGET_C_INCLUDES := \ 165 $(libc_root)/arch-mips64/include \ 166 $(libc_root)/include \ 167 $(KERNEL_HEADERS) \ 168 $(libm_root)/include \ 169 $(libm_root)/include/mips \ 170 171# TODO: perhaps use $(libm_root)/include/mips64 instead of mips ? 172 173TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 174TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 175TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 176 177TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 178TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 179 180TARGET_PACK_MODULE_RELOCATIONS := true 181 182TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 183 184TARGET_LINKER := /system/bin/linker64 185