core/combo/TARGET_linux-mips.mk

   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 $(TARGET_ARCH_VARIANT)),)
  34 TARGET_ARCH_VARIANT := mips32r2-fp
  35 endif
  36
  37 ifeq ($(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 MIPS architecture variant: $(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)/mips/mipsel-linux-android-$(TARGET_GCC_VERSION)
  53 TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mipsel-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         $(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@
  67 endif
  68
  69 TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
  70
  71 TARGET_mips_CFLAGS :=   -O2 \
  72                         -fomit-frame-pointer \
  73                         -fno-strict-aliasing    \
  74                         -funswitch-loops
  75
  76 # Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk
  77 # or in your environment to gdb debugging easier.
  78 # Don't forget to do a clean build.
  79 ifeq ($(FORCE_MIPS_DEBUGGING),true)
  80   TARGET_mips_CFLAGS += -fno-omit-frame-pointer
  81 endif
  82
  83 android_config_h := $(call select-android-config-h,linux-mips)
  84
  85 TARGET_GLOBAL_CFLAGS += \
  86                         $(TARGET_mips_CFLAGS) \
  87                         -Ulinux -U__unix -U__unix__ -Umips \
  88                         -fpic -fPIE\
  89                         -ffunction-sections \
  90                         -fdata-sections \
  91                         -funwind-tables \
  92                         -Wa,--noexecstack \
  93                         -Werror=format-security \
  94                         -D_FORTIFY_SOURCE=2 \
  95                         $(arch_variant_cflags) \
  96                         -include $(android_config_h) \
  97                         -I $(dir $(android_config_h))
  98
  99 # This warning causes dalvik not to build with gcc 4.6+ and -Werror.
 100 # We cannot turn it off blindly since the option is not available
 101 # in gcc-4.4.x.
 102 ifneq ($(filter 4.6 4.6.% 4.7 4.7.% 4.8, $(TARGET_GCC_VERSION)),)
 103 TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable \
 104                         -fno-strict-volatile-bitfields
 105 endif
 106
 107 # This is to avoid the dreaded warning compiler message:
 108 #   note: the mangling of 'va_list' has changed in GCC 4.4
 109 #
 110 # The fact that the mangling changed does not affect the NDK ABI
 111 # very fortunately (since none of the exposed APIs used va_list
 112 # in their exported C++ functions). Also, GCC 4.5 has already
 113 # removed the warning from the compiler.
 114 #
 115 TARGET_GLOBAL_CFLAGS += -Wno-psabi
 116
 117 ifneq ($(ARCH_MIPS_PAGE_SHIFT),)
 118 TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT)
 119 endif
 120
 121 TARGET_GLOBAL_LDFLAGS += \
 122                         -Wl,-z,noexecstack \
 123                         -Wl,-z,relro \
 124                         -Wl,-z,now \
 125                         -Wl,--warn-shared-textrel \
 126                         $(arch_variant_ldflags)
 127
 128 TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden
 129
 130 # More flags/options can be added here
 131 TARGET_RELEASE_CFLAGS := \
 132                         -DNDEBUG \
 133                         -g \
 134                         -Wstrict-aliasing=2 \
 135                         -fgcse-after-reload \
 136                         -frerun-cse-after-loop \
 137                         -frename-registers
 138
 139 libc_root := bionic/libc
 140 libm_root := bionic/libm
 141 libstdc++_root := bionic/libstdc++
 142 libthread_db_root := bionic/libthread_db
 143
 144
 145 ## on some hosts, the target cross-compiler is not available so do not run this command
 146 ifneq ($(wildcard $(TARGET_CC)),)
 147 # We compile with the global cflags to ensure that
 148 # any flags which affect libgcc are correctly taken
 149 # into account.
 150 TARGET_LIBGCC := \
 151   $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a)
 152 LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a)
 153 ifneq ($(LIBGCC_EH),libgcc_eh.a)
 154   TARGET_LIBGCC += $(LIBGCC_EH)
 155 endif
 156 target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
 157         --print-file-name=libgcov.a)
 158 endif
 159
 160 # Define FDO (Feedback Directed Optimization) options.
 161
 162 TARGET_FDO_CFLAGS:=
 163 TARGET_FDO_LIB:=
 164
 165 ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),)
 166   # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation.
 167   # The profile will be generated on /data/local/tmp/profile on the device.
 168   TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO
 169   TARGET_FDO_LIB := $(target_libgcov)
 170 else
 171   # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations.
 172   # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build.
 173   ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),)
 174     TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT)
 175   else
 176     ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
 177       $(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.)
 178     endif
 179   endif
 180
 181   # If the FDO profile directory can't be found, then FDO is off.
 182   ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
 183     TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO
 184     TARGET_FDO_LIB := $(target_libgcov)
 185   endif
 186 endif
 187
 188
 189 # unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
 190 # symlinks located in out/ to point to the appropriate kernel
 191 # headers. see 'config/kernel_headers.make' for more details
 192 #
 193 ifneq ($(CUSTOM_KERNEL_HEADERS),)
 194     KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS)
 195     KERNEL_HEADERS_ARCH   := $(CUSTOM_KERNEL_HEADERS)
 196 else
 197     KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
 198     KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
 199     KERNEL_HEADERS_AUX    := $(libc_root)/kernel/common
 200 endif
 201 KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) $(KERNEL_HEADERS_AUX)
 202
 203 TARGET_C_INCLUDES := \
 204         $(libc_root)/arch-mips/include \
 205         $(libc_root)/include \
 206         $(libstdc++_root)/include \
 207         $(KERNEL_HEADERS) \
 208         $(libm_root)/include \
 209         $(libm_root)/include/mips \
 210         $(libthread_db_root)/include
 211
 212 TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
 213 TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
 214 TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
 215
 216 TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
 217 TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
 218
 219 TARGET_STRIP_MODULE:=true
 220
 221 TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm
 222
 223 TARGET_CUSTOM_LD_COMMAND := true
 224
 225 define transform-o-to-shared-lib-inner
 226 $(hide) $(PRIVATE_CXX) \
 227         -nostdlib -Wl,-soname,$(notdir $@) \
 228         -Wl,--gc-sections \
 229         -Wl,-shared,-Bsymbolic \
 230         $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
 231         $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
 232         $(PRIVATE_ALL_OBJECTS) \
 233         -Wl,--whole-archive \
 234         $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 235         -Wl,--no-whole-archive \
 236         $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
 237         $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 238         $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
 239         $(PRIVATE_TARGET_LIBGCC) \
 240         $(PRIVATE_TARGET_FDO_LIB) \
 241         $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
 242         -o $@ \
 243         $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
 244         $(PRIVATE_LDFLAGS) \
 245         $(PRIVATE_TARGET_LIBGCC) \
 246         $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O))
 247 endef
 248
 249 define transform-o-to-executable-inner
 250 $(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \
 251         -Wl,-dynamic-linker,/system/bin/linker \
 252         -Wl,--gc-sections \
 253         -Wl,-z,nocopyreloc \
 254         $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
 255         -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
 256         $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \
 257         $(PRIVATE_ALL_OBJECTS) \
 258         -Wl,--whole-archive \
 259         $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 260         -Wl,--no-whole-archive \
 261         $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
 262         $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 263         $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
 264         $(PRIVATE_TARGET_LIBGCC) \
 265         $(PRIVATE_TARGET_FDO_LIB) \
 266         $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
 267         -o $@ \
 268         $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
 269         $(PRIVATE_LDFLAGS) \
 270         $(PRIVATE_TARGET_LIBGCC) \
 271         $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
 272 endef
 273
 274 define transform-o-to-static-executable-inner
 275 $(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \
 276         -Wl,--gc-sections \
 277         -o $@ \
 278         $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
 279         $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \
 280         $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
 281         $(PRIVATE_LDFLAGS) \
 282         $(PRIVATE_ALL_OBJECTS) \
 283         -Wl,--whole-archive \
 284         $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 285         -Wl,--no-whole-archive \
 286         $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \
 287         -Wl,--start-group \
 288         $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
 289         $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
 290         $(PRIVATE_TARGET_FDO_LIB) \
 291         $(PRIVATE_TARGET_LIBGCC) \
 292         -Wl,--end-group \
 293         $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
 294 endef