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 mips64. 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 $(TARGET_ARCH_VARIANT)),) 34 TARGET_ARCH_VARIANT := mips64r6 35 endif 36 37 # Decouple NDK library selection with platform compiler version 38 TARGET_NDK_GCC_VERSION := 4.8 39 40 ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) 41 TARGET_GCC_VERSION := 4.9 42 else 43 TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) 44 endif 45 46 TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk 47 ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 48 $(error Unknown MIPS architecture variant: $(TARGET_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 $(TARGET_TOOLS_PREFIX)),) 56 TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/mips/mips64el-linux-android-$(TARGET_GCC_VERSION) 57 TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mips64el-linux-android- 58 endif 59 60 TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) 61 TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) 62 TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) 63 TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) 64 TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) 65 TARGET_READELF := $(TARGET_TOOLS_PREFIX)readelf$(HOST_EXECUTABLE_SUFFIX) 66 TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) 67 68 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-mips64) 83 84 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 TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT) 101 endif 102 103 TARGET_GLOBAL_LDFLAGS += \ 104 -Wl,-z,noexecstack \ 105 -Wl,-z,relro \ 106 -Wl,-z,now \ 107 -Wl,--warn-shared-textrel \ 108 -Wl,--fatal-warnings \ 109 $(arch_variant_ldflags) 110 111 TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden 112 113 # More flags/options can be added here 114 TARGET_RELEASE_CFLAGS := \ 115 -DNDEBUG \ 116 -g \ 117 -Wstrict-aliasing=2 \ 118 -fgcse-after-reload \ 119 -frerun-cse-after-loop \ 120 -frename-registers 121 122 libc_root := bionic/libc 123 libm_root := bionic/libm 124 libstdc++_root := bionic/libstdc++ 125 libthread_db_root := bionic/libthread_db 126 127 128 ## on some hosts, the target cross-compiler is not available so do not run this command 129 ifneq ($(wildcard $(TARGET_CC)),) 130 # We compile with the global cflags to ensure that 131 # any flags which affect libgcc are correctly taken 132 # into account. 133 TARGET_LIBGCC := \ 134 $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a) 135 TARGET_LIBATOMIC := \ 136 $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libatomic.a) 137 LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a) 138 ifneq ($(LIBGCC_EH),libgcc_eh.a) 139 TARGET_LIBGCC += $(LIBGCC_EH) 140 endif 141 endif 142 143 KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi 144 KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-mips 145 # TODO: perhaps use $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) instead of asm-mips ? 146 KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) 147 148 TARGET_C_INCLUDES := \ 149 $(libc_root)/arch-mips64/include \ 150 $(libc_root)/include \ 151 $(libstdc++_root)/include \ 152 $(KERNEL_HEADERS) \ 153 $(libm_root)/include \ 154 $(libm_root)/include/mips \ 155 $(libthread_db_root)/include 156 # TODO: perhaps use $(libm_root)/include/mips64 instead of mips ? 157 158 TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o 159 TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o 160 TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o 161 162 TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o 163 TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o 164 165 TARGET_STRIP_MODULE:=true 166 167 TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm 168 169 TARGET_CUSTOM_LD_COMMAND := true 170 171 define transform-o-to-shared-lib-inner 172 $(hide) $(PRIVATE_CXX) \ 173 -nostdlib -Wl,-soname,$(notdir $@) \ 174 -Wl,--gc-sections \ 175 $(if $(filter true,$(PRIVATE_CLANG)),-shared,-Wl,-shared) \ 176 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 177 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ 178 $(PRIVATE_ALL_OBJECTS) \ 179 -Wl,--whole-archive \ 180 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 181 -Wl,--no-whole-archive \ 182 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 183 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 184 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 185 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 186 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 187 -o $@ \ 188 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 189 $(PRIVATE_LDFLAGS) \ 190 $(PRIVATE_TARGET_LIBATOMIC) \ 191 $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ 192 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) \ 193 $(PRIVATE_LDLIBS) 194 endef 195 196 define transform-o-to-executable-inner 197 $(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -pie \ 198 -Wl,-dynamic-linker,/system/bin/linker64 \ 199 -Wl,--gc-sections \ 200 -Wl,-z,nocopyreloc \ 201 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 202 -Wl,-rpath-link=$(PRIVATE_TARGET_OUT_INTERMEDIATE_LIBRARIES) \ 203 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ 204 $(PRIVATE_ALL_OBJECTS) \ 205 -Wl,--whole-archive \ 206 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 207 -Wl,--no-whole-archive \ 208 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ 209 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ 210 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ 211 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ 212 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ 213 -o $@ \ 214 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 215 $(PRIVATE_LDFLAGS) \ 216 $(PRIVATE_TARGET_LIBATOMIC) \ 217 $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ 218 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) \ 219 $(PRIVATE_LDLIBS) 220 endef 221 222 define transform-o-to-static-executable-inner 223 $(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ 224 -Wl,--gc-sections \ 225 -o $@ \ 226 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ 227 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ 228 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ 229 $(PRIVATE_LDFLAGS) \ 230 $(PRIVATE_ALL_OBJECTS) \ 231 -Wl,--whole-archive \ 232 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ 233 -Wl,--no-whole-archive \ 234 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ 235 -Wl,--start-group \ 236 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 237 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ 238 $(PRIVATE_TARGET_LIBATOMIC) \ 239 $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ 240 -Wl,--end-group \ 241 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) 242 endef 243
