Ben Cheng | db4fc20 | 2013-10-04 16:02:59 -0700 | [diff] [blame^] | 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 ARM. |
| 18 | # Included by combo/select.mk |
| 19 | |
| 20 | # You can set TARGET_ARCH_VARIANT to use an arch version other |
| 21 | # than ARMv5TE. 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 $(TARGET_ARCH_VARIANT)),) |
| 34 | TARGET_ARCH_VARIANT := armv8 |
| 35 | endif |
| 36 | |
| 37 | ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) |
| 38 | TARGET_GCC_VERSION := 4.8 |
| 39 | else |
| 40 | TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) |
| 41 | endif |
| 42 | |
| 43 | TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk |
| 44 | ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) |
| 45 | $(error Unknown ARM architecture version: $(TARGET_ARCH_VARIANT)) |
| 46 | endif |
| 47 | |
| 48 | include $(TARGET_ARCH_SPECIFIC_MAKEFILE) |
| 49 | |
| 50 | # You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else |
| 51 | ifeq ($(strip $(TARGET_TOOLS_PREFIX)),) |
| 52 | TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/aarch64/aarch64-linux-android-$(TARGET_GCC_VERSION) |
| 53 | TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/aarch64-linux-android- |
| 54 | endif |
| 55 | |
| 56 | TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) |
| 57 | TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) |
| 58 | TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) |
| 59 | TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) |
| 60 | TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) |
| 61 | TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) |
| 62 | ifeq ($(TARGET_BUILD_VARIANT),user) |
| 63 | TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ |
| 64 | else |
| 65 | TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ && \ |
| 66 | $(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@ |
| 67 | endif |
| 68 | |
| 69 | TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined |
| 70 | |
| 71 | android_config_h := $(call select-android-config-h,linux-aarch64) |
| 72 | |
| 73 | TARGET_GLOBAL_CFLAGS += \ |
| 74 | -fpic -fPIE \ |
| 75 | $(arch_variant_cflags) \ |
| 76 | -include $(android_config_h) \ |
| 77 | -I $(dir $(android_config_h)) |
| 78 | |
| 79 | TARGET_GLOBAL_CFLAGS += \ |
| 80 | -fpic -fPIE \ |
| 81 | -ffunction-sections \ |
| 82 | -fdata-sections \ |
| 83 | -funwind-tables \ |
| 84 | -Wa,--noexecstack \ |
| 85 | -Werror=format-security \ |
| 86 | -D_FORTIFY_SOURCE=2 \ |
| 87 | -fno-short-enums \ |
| 88 | $(arch_variant_cflags) \ |
| 89 | -include $(android_config_h) \ |
| 90 | -I $(dir $(android_config_h)) |
| 91 | |
| 92 | TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields |
| 93 | |
| 94 | # This is to avoid the dreaded warning compiler message: |
| 95 | # note: the mangling of 'va_list' has changed in GCC 4.4 |
| 96 | # |
| 97 | # The fact that the mangling changed does not affect the NDK ABI |
| 98 | # very fortunately (since none of the exposed APIs used va_list |
| 99 | # in their exported C++ functions). Also, GCC 4.5 has already |
| 100 | # removed the warning from the compiler. |
| 101 | # |
| 102 | TARGET_GLOBAL_CFLAGS += -Wno-psabi |
| 103 | |
| 104 | TARGET_GLOBAL_LDFLAGS += \ |
| 105 | -Wl,-z,noexecstack \ |
| 106 | -Wl,-z,relro \ |
| 107 | -Wl,-z,now \ |
| 108 | -Wl,--warn-shared-textrel \ |
| 109 | -Wl,--fatal-warnings \ |
| 110 | $(arch_variant_ldflags) |
| 111 | |
| 112 | TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden |
| 113 | |
| 114 | # More flags/options can be added here |
| 115 | TARGET_RELEASE_CFLAGS := \ |
| 116 | -DNDEBUG \ |
| 117 | -O2 -g \ |
| 118 | -Wstrict-aliasing=2 \ |
| 119 | -fgcse-after-reload \ |
| 120 | -frerun-cse-after-loop \ |
| 121 | -frename-registers |
| 122 | |
| 123 | libc_root := bionic/libc |
| 124 | libm_root := bionic/libm |
| 125 | libstdc++_root := bionic/libstdc++ |
| 126 | libthread_db_root := bionic/libthread_db |
| 127 | |
| 128 | |
| 129 | # unless CUSTOM_KERNEL_HEADERS is defined, we're going to use |
| 130 | # symlinks located in out/ to point to the appropriate kernel |
| 131 | # headers. see 'config/kernel_headers.make' for more details |
| 132 | # |
| 133 | ifneq ($(CUSTOM_KERNEL_HEADERS),) |
| 134 | KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS) |
| 135 | KERNEL_HEADERS_ARCH := $(CUSTOM_KERNEL_HEADERS) |
| 136 | else |
| 137 | KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common |
| 138 | KERNEL_HEADERS_ARCH := $(libc_root)/kernel/arch-$(TARGET_ARCH) |
| 139 | endif |
| 140 | KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) |
| 141 | |
| 142 | TARGET_C_INCLUDES := \ |
| 143 | $(libc_root)/arch-aarch64/include \ |
| 144 | $(libc_root)/include \ |
| 145 | $(libstdc++_root)/include \ |
| 146 | $(KERNEL_HEADERS) \ |
| 147 | $(libm_root)/include \ |
| 148 | $(libm_root)/include/aarch64 \ |
| 149 | $(libthread_db_root)/include |
| 150 | |
| 151 | # FIXME |
| 152 | # CRT* objects to be added later |
| 153 | TARGET_CRTBEGIN_STATIC_O := |
| 154 | TARGET_CRTBEGIN_DYNAMIC_O := |
| 155 | TARGET_CRTEND_O := |
| 156 | |
| 157 | TARGET_CRTBEGIN_SO_O := |
| 158 | TARGET_CRTEND_SO_O := |
| 159 | |
| 160 | TARGET_STRIP_MODULE:=true |
| 161 | |
| 162 | TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm |
| 163 | |
| 164 | TARGET_CUSTOM_LD_COMMAND := true |
| 165 | |
| 166 | define transform-o-to-shared-lib-inner |
| 167 | $(hide) $(PRIVATE_CXX) \ |
| 168 | -nostdlib -Wl,-soname,$(notdir $@) \ |
| 169 | -Wl,-shared,-Bsymbolic \ |
| 170 | $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ |
| 171 | $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ |
| 172 | $(PRIVATE_ALL_OBJECTS) \ |
| 173 | -Wl,--whole-archive \ |
| 174 | $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ |
| 175 | -Wl,--no-whole-archive \ |
| 176 | $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ |
| 177 | $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ |
| 178 | $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ |
| 179 | $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ |
| 180 | $(PRIVATE_TARGET_FDO_LIB) \ |
| 181 | $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ |
| 182 | -o $@ \ |
| 183 | $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ |
| 184 | $(PRIVATE_LDFLAGS) \ |
| 185 | $(PRIVATE_TARGET_LIBGCC) \ |
| 186 | $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) |
| 187 | endef |
| 188 | |
| 189 | define transform-o-to-executable-inner |
| 190 | $(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \ |
| 191 | -Wl,-dynamic-linker,/system/bin/linker \ |
| 192 | -Wl,-z,nocopyreloc \ |
| 193 | $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ |
| 194 | -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \ |
| 195 | $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ |
| 196 | $(PRIVATE_ALL_OBJECTS) \ |
| 197 | -Wl,--whole-archive \ |
| 198 | $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ |
| 199 | -Wl,--no-whole-archive \ |
| 200 | $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ |
| 201 | $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ |
| 202 | $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ |
| 203 | $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ |
| 204 | $(PRIVATE_TARGET_FDO_LIB) \ |
| 205 | $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ |
| 206 | -o $@ \ |
| 207 | $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ |
| 208 | $(PRIVATE_LDFLAGS) \ |
| 209 | $(PRIVATE_TARGET_LIBGCC) \ |
| 210 | $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) |
| 211 | endef |
| 212 | |
| 213 | define transform-o-to-static-executable-inner |
| 214 | $(hide) $(PRIVATE_CXX) -Bstatic \ |
| 215 | -o $@ \ |
| 216 | $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ |
| 217 | $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ |
| 218 | $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ |
| 219 | $(PRIVATE_LDFLAGS) \ |
| 220 | $(PRIVATE_ALL_OBJECTS) \ |
| 221 | -Wl,--whole-archive \ |
| 222 | $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ |
| 223 | -Wl,--no-whole-archive \ |
| 224 | $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ |
| 225 | -Wl,--start-group \ |
| 226 | $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ |
| 227 | $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ |
| 228 | $(PRIVATE_TARGET_FDO_LIB) \ |
| 229 | $(PRIVATE_TARGET_LIBGCC) \ |
| 230 | -Wl,--end-group \ |
| 231 | $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) |
| 232 | endef |