TARGET_linux-mips.mk revision b9b89e938537d5f44108f93961c8ab44b9422cdb
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# $(BUILD_COMBOS)/arch/<name>.mk which must contain 23# makefile variable definitions. Their 24# purpose is to allow module Android.mk files to selectively compile 25# different versions of code based upon the funtionality and 26# instructions available in a given architecture version. 27# 28# The blocks also define specific arch_variant_cflags, which 29# include defines, and compiler settings for the given architecture 30# version. 31# 32ifeq ($(strip $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT)),) 33TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT := mips32r2-fp 34endif 35 36# Decouple NDK library selection with platform compiler version 37$(combo_2nd_arch_prefix)TARGET_NDK_GCC_VERSION := 4.9 38 39ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) 40$(combo_2nd_arch_prefix)TARGET_GCC_VERSION := 4.9 41else 42$(combo_2nd_arch_prefix)TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) 43endif 44 45TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_$(combo_2nd_arch_prefix)ARCH)/$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT).mk 46ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 47$(error Unknown MIPS architecture variant: $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT)) 48endif 49 50include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 51include $(BUILD_SYSTEM)/combo/fdo.mk 52 53# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 54ifeq ($(strip $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)),) 55$(combo_2nd_arch_prefix)TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/mips/mips64el-linux-android-$($(combo_2nd_arch_prefix)TARGET_GCC_VERSION) 56$(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX := $($(combo_2nd_arch_prefix)TARGET_TOOLCHAIN_ROOT)/bin/mips64el-linux-android- 57endif 58 59$(combo_2nd_arch_prefix)TARGET_CC := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)gcc 60$(combo_2nd_arch_prefix)TARGET_CXX := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)g++ 61$(combo_2nd_arch_prefix)TARGET_AR := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)ar 62$(combo_2nd_arch_prefix)TARGET_OBJCOPY := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)objcopy 63$(combo_2nd_arch_prefix)TARGET_LD := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)ld 64$(combo_2nd_arch_prefix)TARGET_READELF := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)readelf 65$(combo_2nd_arch_prefix)TARGET_STRIP := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)strip 66$(combo_2nd_arch_prefix)TARGET_NM := $($(combo_2nd_arch_prefix)TARGET_TOOLS_PREFIX)nm 67 68define $(combo_var_prefix)transform-shared-lib-to-toc 69$(call _gen_toc_command_for_elf,$(1),$(2)) 70endef 71 72$(combo_2nd_arch_prefix)TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 73 74TARGET_mips_CFLAGS := -O2 \ 75 -fomit-frame-pointer \ 76 -fno-strict-aliasing \ 77 -funswitch-loops 78 79# Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk 80# or in your environment to gdb debugging easier. 81# Don't forget to do a clean build. 82ifeq ($(FORCE_MIPS_DEBUGGING),true) 83 TARGET_mips_CFLAGS += -fno-omit-frame-pointer 84endif 85 86$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += \ 87 $(TARGET_mips_CFLAGS) \ 88 -U__unix -U__unix__ -Umips \ 89 -ffunction-sections \ 90 -fdata-sections \ 91 -funwind-tables \ 92 -fstack-protector-strong \ 93 -Wa,--noexecstack \ 94 -Werror=format-security \ 95 -D_FORTIFY_SOURCE=2 \ 96 -no-canonical-prefixes \ 97 -fno-canonical-system-headers \ 98 $(arch_variant_cflags) \ 99 100ifneq ($(ARCH_MIPS_PAGE_SHIFT),) 101$(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT) 102endif 103 104$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += \ 105 -Wl,-z,noexecstack \ 106 -Wl,-z,relro \ 107 -Wl,-z,now \ 108 -Wl,--build-id=md5 \ 109 -Wl,--warn-shared-textrel \ 110 -Wl,--fatal-warnings \ 111 -Wl,--no-undefined-version \ 112 $(arch_variant_ldflags) 113 114# Disable transitive dependency library symbol resolving. 115$(combo_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS += -Wl,--allow-shlib-undefined 116 117$(combo_2nd_arch_prefix)TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 118 119# More flags/options can be added here 120$(combo_2nd_arch_prefix)TARGET_RELEASE_CFLAGS := \ 121 -DNDEBUG \ 122 -g \ 123 -Wstrict-aliasing=2 \ 124 -fgcse-after-reload \ 125 -frerun-cse-after-loop \ 126 -frename-registers 127 128libc_root := bionic/libc 129libm_root := bionic/libm 130 131 132## on some hosts, the target cross-compiler is not available so do not run this command 133ifneq ($(wildcard $($(combo_2nd_arch_prefix)TARGET_CC)),) 134# We compile with the global cflags to ensure that 135# any flags which affect libgcc are correctly taken 136# into account. 137$(combo_2nd_arch_prefix)TARGET_LIBGCC := \ 138 $(shell $($(combo_2nd_arch_prefix)TARGET_CC) $($(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a) 139$(combo_2nd_arch_prefix)TARGET_LIBATOMIC := \ 140 $(shell $($(combo_2nd_arch_prefix)TARGET_CC) $($(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS) -print-file-name=libatomic.a) 141LIBGCC_EH := $(shell $($(combo_2nd_arch_prefix)TARGET_CC) $($(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a) 142ifneq ($(LIBGCC_EH),libgcc_eh.a) 143 $(combo_2nd_arch_prefix)TARGET_LIBGCC += $(LIBGCC_EH) 144endif 145$(combo_2nd_arch_prefix)TARGET_LIBGCOV := $(shell $($(combo_2nd_arch_prefix)TARGET_CC) $($(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS) \ 146 --print-file-name=libgcov.a) 147endif 148 149KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 150KERNEL_HEADERS_COMMON += $(libc_root)/kernel/common 151KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-mips # mips covers both mips and mips64. 152KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 153 154$(combo_2nd_arch_prefix)TARGET_C_INCLUDES := \ 155 $(libc_root)/arch-mips/include \ 156 $(libc_root)/include \ 157 $(KERNEL_HEADERS) \ 158 $(libm_root)/include \ 159 $(libm_root)/include/mips \ 160 161$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_STATIC_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 162$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_DYNAMIC_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 163$(combo_2nd_arch_prefix)TARGET_CRTEND_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 164 165$(combo_2nd_arch_prefix)TARGET_CRTBEGIN_SO_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 166$(combo_2nd_arch_prefix)TARGET_CRTEND_SO_O := $($(combo_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 167 168$(combo_2nd_arch_prefix)TARGET_PACK_MODULE_RELOCATIONS := true 169 170$(combo_2nd_arch_prefix)TARGET_LINKER := /system/bin/linker 171