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