| # |
| # Copyright (C) 2013 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| # Configuration for Linux on ARM. |
| # Included by combo/select.mk |
| |
| # You can set TARGET_ARCH_VARIANT to use an arch version other |
| # than ARMv5TE. Each value should correspond to a file named |
| # $(BUILD_COMBOS)/arch/<name>.mk which must contain |
| # makefile variable definitions similar to the preprocessor |
| # defines in build/core/combo/include/arch/<combo>/AndroidConfig.h. Their |
| # purpose is to allow module Android.mk files to selectively compile |
| # different versions of code based upon the funtionality and |
| # instructions available in a given architecture version. |
| # |
| # The blocks also define specific arch_variant_cflags, which |
| # include defines, and compiler settings for the given architecture |
| # version. |
| # |
| ifeq ($(strip $(TARGET_ARCH_VARIANT)),) |
| TARGET_ARCH_VARIANT := armv8 |
| endif |
| |
| # Decouple NDK library selection with platform compiler version |
| TARGET_NDK_GCC_VERSION := 4.9 |
| |
| ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),) |
| TARGET_GCC_VERSION := 4.9 |
| else |
| TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP) |
| endif |
| |
| TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk |
| ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) |
| $(error Unknown ARM architecture version: $(TARGET_ARCH_VARIANT)) |
| endif |
| |
| include $(TARGET_ARCH_SPECIFIC_MAKEFILE) |
| include $(BUILD_SYSTEM)/combo/fdo.mk |
| |
| # You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else |
| ifeq ($(strip $(TARGET_TOOLS_PREFIX)),) |
| TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/aarch64/aarch64-linux-android-$(TARGET_GCC_VERSION) |
| TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/aarch64-linux-android- |
| endif |
| |
| TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) |
| TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) |
| TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) |
| TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) |
| TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) |
| TARGET_READELF := $(TARGET_TOOLS_PREFIX)readelf$(HOST_EXECUTABLE_SUFFIX) |
| TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX) |
| |
| TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined |
| |
| TARGET_GLOBAL_CFLAGS += \ |
| -fno-strict-aliasing \ |
| |
| android_config_h := $(call select-android-config-h,linux-arm64) |
| |
| TARGET_GLOBAL_CFLAGS += \ |
| -fstack-protector \ |
| -ffunction-sections \ |
| -fdata-sections \ |
| -funwind-tables \ |
| -Wa,--noexecstack \ |
| -Werror=format-security \ |
| -D_FORTIFY_SOURCE=2 \ |
| -fno-short-enums \ |
| -no-canonical-prefixes \ |
| -fno-canonical-system-headers \ |
| $(arch_variant_cflags) \ |
| -include $(android_config_h) \ |
| -I $(dir $(android_config_h)) |
| |
| # Help catch common 32/64-bit errors. |
| TARGET_GLOBAL_CFLAGS += \ |
| -Werror=pointer-to-int-cast \ |
| -Werror=int-to-pointer-cast \ |
| |
| TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields |
| |
| # This is to avoid the dreaded warning compiler message: |
| # note: the mangling of 'va_list' has changed in GCC 4.4 |
| # |
| # The fact that the mangling changed does not affect the NDK ABI |
| # very fortunately (since none of the exposed APIs used va_list |
| # in their exported C++ functions). Also, GCC 4.5 has already |
| # removed the warning from the compiler. |
| # |
| TARGET_GLOBAL_CFLAGS += -Wno-psabi |
| |
| TARGET_GLOBAL_LDFLAGS += \ |
| -Wl,-z,noexecstack \ |
| -Wl,-z,relro \ |
| -Wl,-z,now \ |
| -Wl,--warn-shared-textrel \ |
| -Wl,--fatal-warnings \ |
| -Wl,-maarch64linux \ |
| $(arch_variant_ldflags) |
| |
| TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden |
| |
| # More flags/options can be added here |
| TARGET_RELEASE_CFLAGS := \ |
| -DNDEBUG \ |
| -O2 -g \ |
| -Wstrict-aliasing=2 \ |
| -fgcse-after-reload \ |
| -frerun-cse-after-loop \ |
| -frename-registers |
| |
| libc_root := bionic/libc |
| libm_root := bionic/libm |
| libstdc++_root := bionic/libstdc++ |
| |
| TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ |
| -print-libgcc-file-name) |
| TARGET_LIBATOMIC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \ |
| -print-file-name=libatomic.a) |
| |
| KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi |
| KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) |
| KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) |
| |
| TARGET_C_INCLUDES := \ |
| $(libc_root)/arch-arm64/include \ |
| $(libc_root)/include \ |
| $(libstdc++_root)/include \ |
| $(KERNEL_HEADERS) \ |
| $(libm_root)/include \ |
| $(libm_root)/include/arm64 \ |
| |
| TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o |
| TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o |
| TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o |
| |
| TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o |
| TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o |
| |
| TARGET_STRIP_MODULE:=true |
| |
| TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm |
| |
| TARGET_CUSTOM_LD_COMMAND := true |
| |
| define transform-o-to-shared-lib-inner |
| $(hide) $(PRIVATE_CXX) \ |
| -nostdlib -Wl,-soname,$(notdir $@) \ |
| -Wl,--gc-sections \ |
| $(if $(filter true,$(PRIVATE_CLANG)),-shared,-Wl,-shared) \ |
| $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ |
| $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \ |
| $(PRIVATE_ALL_OBJECTS) \ |
| -Wl,--whole-archive \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ |
| -Wl,--no-whole-archive \ |
| $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ |
| $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ |
| $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ |
| -o $@ \ |
| $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ |
| $(PRIVATE_LDFLAGS) \ |
| $(PRIVATE_TARGET_LIBATOMIC) \ |
| $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ |
| $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) \ |
| $(PRIVATE_LDLIBS) |
| endef |
| |
| define transform-o-to-executable-inner |
| $(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -pie \ |
| -Wl,-dynamic-linker,/system/bin/linker64 \ |
| -Wl,--gc-sections \ |
| -Wl,-z,nocopyreloc \ |
| $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ |
| -Wl,-rpath-link=$(PRIVATE_TARGET_OUT_INTERMEDIATE_LIBRARIES) \ |
| $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \ |
| $(PRIVATE_ALL_OBJECTS) \ |
| -Wl,--whole-archive \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ |
| -Wl,--no-whole-archive \ |
| $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ |
| $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \ |
| $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ |
| -o $@ \ |
| $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ |
| $(PRIVATE_LDFLAGS) \ |
| $(PRIVATE_TARGET_LIBATOMIC) \ |
| $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ |
| $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) \ |
| $(PRIVATE_LDLIBS) |
| endef |
| |
| define transform-o-to-static-executable-inner |
| $(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \ |
| -Wl,--gc-sections \ |
| -o $@ \ |
| $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \ |
| $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \ |
| $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \ |
| $(PRIVATE_LDFLAGS) \ |
| $(PRIVATE_ALL_OBJECTS) \ |
| -Wl,--whole-archive \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ |
| -Wl,--no-whole-archive \ |
| $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \ |
| -Wl,--start-group \ |
| $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ |
| $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \ |
| $(PRIVATE_TARGET_LIBATOMIC) \ |
| $(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \ |
| -Wl,--end-group \ |
| $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) |
| endef |
