| # Configuration for Linux on ARM. |
| # Included by combo/select.make |
| |
| # You can set TARGET_ARCH_VARIANT to use an arch version other |
| # than ARMv5TE. Each value should correspond to a file named |
| # $(BUILD_COMBOS)/arch/<name>.mk which must contain |
| # makefile variable definitions similar to the preprocessor |
| # defines in system/core/include/arch/<combo>/AndroidConfig.h. Their |
| # purpose is to allow module Android.mk files to selectively compile |
| # different versions of code based upon the funtionality and |
| # instructions available in a given architecture version. |
| # |
| # The blocks also define specific arch_variant_cflags, which |
| # include defines, and compiler settings for the given architecture |
| # version. |
| # |
| ifeq ($(TARGET_ARCH),arm) |
| ifeq ($(strip $(TARGET_ARCH_VARIANT)),) |
| TARGET_ARCH_VARIANT := armv5te |
| endif |
| endif |
| |
| # TARGET_ARCH_VARIANT used to be called TARGET_ARCH_VERSION |
| # to avoid any weirdness, issue an error message if the latter |
| # is defined. |
| # |
| ifneq ($(strip $(TARGET_ARCH_VERSION)),) |
| $(info Definition for TARGET_ARCH_VERSION encountered !) |
| $(info This variable has been renamed TARGET_ARCH_VARIANT, please update your build files !!) |
| $(error Aborting the build.) |
| 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 $(TARGET_ARCH_SPECIFIC_MAKEFILE) |
| |
| # You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else |
| ifeq ($(strip $($(combo_target)TOOLS_PREFIX)),) |
| $(combo_target)TOOLS_PREFIX := \ |
| prebuilt/$(HOST_PREBUILT_TAG)/toolchain/arm-eabi-4.4.0/bin/arm-eabi- |
| endif |
| |
| $(combo_target)CC := $($(combo_target)TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) |
| $(combo_target)CXX := $($(combo_target)TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) |
| $(combo_target)AR := $($(combo_target)TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) |
| $(combo_target)OBJCOPY := $($(combo_target)TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) |
| $(combo_target)LD := $($(combo_target)TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) |
| |
| $(combo_target)NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined |
| |
| TARGET_arm_CFLAGS := -O2 \ |
| -fomit-frame-pointer \ |
| -fstrict-aliasing \ |
| -funswitch-loops \ |
| -finline-limit=300 |
| |
| # Modules can choose to compile some source as thumb. As |
| # non-thumb enabled targets are supported, this is treated |
| # as a 'hint'. If thumb is not enabled, these files are just |
| # compiled as ARM. |
| ifeq ($(ARCH_ARM_HAVE_THUMB_SUPPORT),true) |
| TARGET_thumb_CFLAGS := -mthumb \ |
| -Os \ |
| -fomit-frame-pointer \ |
| -fno-strict-aliasing \ |
| -finline-limit=64 |
| else |
| TARGET_thumb_CFLAGS := $(TARGET_arm_CFLAGS) |
| endif |
| |
| # Set FORCE_ARM_DEBUGGING to "true" in your buildspec.mk |
| # or in your environment to force a full arm build, even for |
| # files that are normally built as thumb; this can make |
| # gdb debugging easier. Don't forget to do a clean build. |
| # |
| # NOTE: if you try to build a -O0 build with thumb, several |
| # of the libraries (libpv, libwebcore, libkjs) need to be built |
| # with -mlong-calls. When built at -O0, those libraries are |
| # too big for a thumb "BL <label>" to go from one end to the other. |
| ifeq ($(FORCE_ARM_DEBUGGING),true) |
| TARGET_arm_CFLAGS += -fno-omit-frame-pointer -fno-strict-aliasing |
| TARGET_thumb_CFLAGS += -marm -fno-omit-frame-pointer |
| endif |
| |
| android_config_h := $(call select-android-config-h,linux-arm) |
| arch_include_dir := $(dir $(android_config_h)) |
| |
| $(combo_target)GLOBAL_CFLAGS += \ |
| -msoft-float -fpic \ |
| -ffunction-sections \ |
| -funwind-tables \ |
| -fstack-protector \ |
| -fno-short-enums \ |
| $(arch_variant_cflags) \ |
| -include $(android_config_h) \ |
| -I $(arch_include_dir) |
| |
| $(combo_target)GLOBAL_LDFLAGS += \ |
| $(arch_variant_ldflags) |
| |
| # We only need thumb interworking in cases where thumb support |
| # is available in the architecture, and just to be sure, (and |
| # since sometimes thumb-interwork appears to be default), we |
| # specifically disable when thumb support is unavailable. |
| ifeq ($(ARCH_ARM_HAVE_THUMB_SUPPORT),true) |
| $(combo_target)GLOBAL_CFLAGS += -mthumb-interwork |
| else |
| $(combo_target)GLOBAL_CFLAGS += -mno-thumb-interwork |
| endif |
| |
| $(combo_target)GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden |
| |
| $(combo_target)RELEASE_CFLAGS := \ |
| -DNDEBUG \ |
| -g \ |
| -Wstrict-aliasing=2 \ |
| -finline-functions \ |
| -fno-inline-functions-called-once \ |
| -fgcse-after-reload \ |
| -frerun-cse-after-loop \ |
| -frename-registers |
| |
| libc_root := bionic/libc |
| libm_root := bionic/libm |
| libstdc++_root := bionic/libstdc++ |
| libthread_db_root := bionic/libthread_db |
| |
| |
| ## on some hosts, the target cross-compiler is not available so do not run this command |
| ifneq ($(wildcard $($(combo_target)CC)),) |
| # We compile with the global cflags to ensure that |
| # any flags which affect libgcc are correctly taken |
| # into account. |
| $(combo_target)LIBGCC := $(shell $($(combo_target)CC) $($(combo_target)GLOBAL_CFLAGS) -print-libgcc-file-name) |
| endif |
| |
| # Define FDO (Feedback Directed Optimization) options. |
| |
| TARGET_FDO_CFLAGS:= |
| TARGET_FDO_LIB:= |
| |
| target_libgcov := $(shell $($(combo_target)CC) $($(combo_target)GLOBAL_CFLAGS) \ |
| --print-file-name=libgcov.a) |
| ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),) |
| # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation. |
| # The profile will be generated on /data/local/tmp/profile on the device. |
| TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO |
| TARGET_FDO_LIB := $(target_libgcov) |
| else |
| # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations. |
| # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build. |
| ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),) |
| TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT) |
| else |
| ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) |
| $(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.) |
| endif |
| endif |
| |
| # If the FDO profile directory can't be found, then FDO is off. |
| ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),) |
| TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO |
| TARGET_FDO_LIB := $(target_libgcov) |
| endif |
| endif |
| |
| |
| # unless CUSTOM_KERNEL_HEADERS is defined, we're going to use |
| # symlinks located in out/ to point to the appropriate kernel |
| # headers. see 'config/kernel_headers.make' for more details |
| # |
| ifneq ($(CUSTOM_KERNEL_HEADERS),) |
| KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS) |
| KERNEL_HEADERS_ARCH := $(CUSTOM_KERNEL_HEADERS) |
| else |
| KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common |
| KERNEL_HEADERS_ARCH := $(libc_root)/kernel/arch-$(TARGET_ARCH) |
| endif |
| KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) |
| |
| $(combo_target)C_INCLUDES := \ |
| $(libc_root)/arch-arm/include \ |
| $(libc_root)/include \ |
| $(libstdc++_root)/include \ |
| $(KERNEL_HEADERS) \ |
| $(libm_root)/include \ |
| $(libm_root)/include/arch/arm \ |
| $(libthread_db_root)/include |
| |
| TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_static.o |
| TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_dynamic.o |
| TARGET_CRTEND_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_android.o |
| |
| TARGET_STRIP_MODULE:=true |
| |
| $(combo_target)DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm |
| |
| $(combo_target)CUSTOM_LD_COMMAND := true |
| |
| # Enable the Dalvik JIT compiler if not already specified. |
| ifeq ($(strip $(WITH_JIT)),) |
| WITH_JIT := true |
| endif |
| |
| define transform-o-to-shared-lib-inner |
| $(TARGET_CXX) \ |
| -nostdlib -Wl,-soname,$(notdir $@) -Wl,-T,$(BUILD_SYSTEM)/armelf.xsc \ |
| -Wl,--gc-sections \ |
| -Wl,-shared,-Bsymbolic \ |
| $(TARGET_GLOBAL_LD_DIRS) \ |
| $(PRIVATE_ALL_OBJECTS) \ |
| -Wl,--whole-archive \ |
| $(call normalize-host-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ |
| -Wl,--no-whole-archive \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ |
| -o $@ \ |
| $(PRIVATE_LDFLAGS) \ |
| $(TARGET_GLOBAL_LDFLAGS) \ |
| $(TARGET_FDO_LIB) \ |
| $(TARGET_LIBGCC) |
| endef |
| |
| define transform-o-to-executable-inner |
| $(TARGET_CXX) -nostdlib -Bdynamic -Wl,-T,$(BUILD_SYSTEM)/armelf.x \ |
| -Wl,-dynamic-linker,/system/bin/linker \ |
| -Wl,--gc-sections \ |
| -Wl,-z,nocopyreloc \ |
| -o $@ \ |
| $(TARGET_GLOBAL_LD_DIRS) \ |
| -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ |
| $(TARGET_CRTBEGIN_DYNAMIC_O) \ |
| $(PRIVATE_ALL_OBJECTS) \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ |
| $(PRIVATE_LDFLAGS) \ |
| $(TARGET_GLOBAL_LDFLAGS) \ |
| $(TARGET_FDO_LIB) \ |
| $(TARGET_LIBGCC) \ |
| $(TARGET_CRTEND_O) |
| endef |
| |
| define transform-o-to-static-executable-inner |
| $(TARGET_CXX) -nostdlib -Bstatic -Wl,-T,$(BUILD_SYSTEM)/armelf.x \ |
| -Wl,--gc-sections \ |
| -o $@ \ |
| $(TARGET_GLOBAL_LD_DIRS) \ |
| $(TARGET_CRTBEGIN_STATIC_O) \ |
| $(PRIVATE_LDFLAGS) \ |
| $(TARGET_GLOBAL_LDFLAGS) \ |
| $(PRIVATE_ALL_OBJECTS) \ |
| $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ |
| $(TARGET_FDO_LIB) \ |
| $(TARGET_LIBGCC) \ |
| $(TARGET_CRTEND_O) |
| endef |
