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 # $(BUILD_COMBOS)/arch/<name>.mk which must contain 23 # makefile variable definitions. Their 24 # purpose is to allow module Android.mk files to selectively compile 25 # different versions of code based upon the funtionality and 26 # instructions available in a given architecture version. 27 # 28 # The blocks also define specific arch_variant_cflags, which 29 # include defines, and compiler settings for the given architecture 30 # version. 31 # 32 ifeq ($(strip $(TARGET_ARCH_VARIANT)),) 33 TARGET_ARCH_VARIANT := mips64r6 34 endif 35 36 # Decouple NDK library selection with platform compiler version 37 TARGET_NDK_GCC_VERSION := 4.9 38 39 ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) 40 TARGET_GCC_VERSION := 4.9 41 else 42 TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) 43 endif 44 45 TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk 46 ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 47 $(error Unknown MIPS architecture variant: $(TARGET_ARCH_VARIANT)) 48 endif 49 50 include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 51 include $(BUILD_SYSTEM)/combo/fdo.mk 52 53 # You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else 54 ifeq ($(strip $(TARGET_TOOLS_PREFIX)),) 55 TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/mips/mips64el-linux-android-$(TARGET_GCC_VERSION) 56 TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mips64el-linux-android- 57 endif 58 59 TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc 60 TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++ 61 TARGET_AR := $(TARGET_TOOLS_PREFIX)ar 62 TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy 63 TARGET_LD := $(TARGET_TOOLS_PREFIX)ld 64 TARGET_READELF := $(TARGET_TOOLS_PREFIX)readelf 65 TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip 66 TARGET_NM := $(TARGET_TOOLS_PREFIX)nm 67 68 define $(combo_var_prefix)transform-shared-lib-to-toc 69 $(call _gen_toc_command_for_elf,$(1),$(2)) 70 endef 71 72 TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined 73 74 TARGET_mips_CFLAGS := -O2 \ 75 -fomit-frame-pointer \ 76 -fno-strict-aliasing \ 77 -funswitch-loops 78 79 # Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk 80 # or in your environment to gdb debugging easier. 81 # Don't forget to do a clean build. 82 ifeq ($(FORCE_MIPS_DEBUGGING),true) 83 TARGET_mips_CFLAGS += -fno-omit-frame-pointer 84 endif 85 86 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 $(arch_variant_cflags) \ 99 100 # Help catch common 32/64-bit errors. 101 TARGET_GLOBAL_CFLAGS += \ 102 -Werror=pointer-to-int-cast \ 103 -Werror=int-to-pointer-cast \ 104 -Werror=implicit-function-declaration \ 105 106 ifneq ($(ARCH_MIPS_PAGE_SHIFT),) 107 TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT) 108 endif 109 110 TARGET_GLOBAL_LDFLAGS += \ 111 -Wl,-z,noexecstack \ 112 -Wl,-z,relro \ 113 -Wl,-z,now \ 114 -Wl,--build-id=md5 \ 115 -Wl,--warn-shared-textrel \ 116 -Wl,--fatal-warnings \ 117 -Wl,--no-undefined-version \ 118 $(arch_variant_ldflags) 119 120 # Disable transitive dependency library symbol resolving. 121 TARGET_GLOBAL_LDFLAGS += -Wl,--allow-shlib-undefined 122 123 TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 124 125 # More flags/options can be added here 126 TARGET_RELEASE_CFLAGS := \ 127 -DNDEBUG \ 128 -g \ 129 -Wstrict-aliasing=2 \ 130 -fgcse-after-reload \ 131 -frerun-cse-after-loop \ 132 -frename-registers 133 134 libc_root := bionic/libc 135 libm_root := bionic/libm 136 137 138 ## on some hosts, the target cross-compiler is not available so do not run this command 139 ifneq ($(wildcard $(TARGET_CC)),) 140 # We compile with the global cflags to ensure that 141 # any flags which affect libgcc are correctly taken 142 # into account. 143 TARGET_LIBGCC := \ 144 $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a) 145 TARGET_LIBATOMIC := \ 146 $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libatomic.a) 147 LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a) 148 ifneq ($(LIBGCC_EH),libgcc_eh.a) 149 TARGET_LIBGCC += $(LIBGCC_EH) 150 endif 151 TARGET_LIBGCOV := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ 152 --print-file-name=libgcov.a) 153 endif 154 155 KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 156 KERNEL_HEADERS_COMMON += $(libc_root)/kernel/common 157 KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-mips 158 # TODO: perhaps use $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) instead of asm-mips ? 159 KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 160 161 TARGET_C_INCLUDES := \ 162 $(libc_root)/arch-mips64/include \ 163 $(libc_root)/include \ 164 $(KERNEL_HEADERS) \ 165 $(libm_root)/include \ 166 $(libm_root)/include/mips \ 167 168 # TODO: perhaps use $(libm_root)/include/mips64 instead of mips ? 169 170 TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 171 TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 172 TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 173 174 TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 175 TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 176 177 TARGET_PACK_MODULE_RELOCATIONS := true 178 179 TARGET_LINKER := /system/bin/linker64 180
