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# Configuration for Linux on ARM.
# Included by combo/select.make
# 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-4.2.1/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_release_CFLAGS := -fomit-frame-pointer \
-fstrict-aliasing \
-funswitch-loops \
-finline-limit=300
TARGET_thumb_release_CFLAGS := -mthumb \
-Os \
-fomit-frame-pointer \
-fno-strict-aliasing \
-finline-limit=64
# When building for debug, compile everything as arm.
TARGET_arm_debug_CFLAGS := $(TARGET_arm_release_CFLAGS) -fno-omit-frame-pointer -fno-strict-aliasing
TARGET_thumb_debug_CFLAGS := $(TARGET_thumb_release_CFLAGS) -marm -fno-omit-frame-pointer
# NOTE: if you try to build a debug 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.
## As hopefully a temporary hack,
## use this to force a full ARM build (for easier debugging in gdb)
## (don't forget to do a clean build)
##TARGET_arm_release_CFLAGS := $(TARGET_arm_release_CFLAGS) -fno-omit-frame-pointer
##TARGET_thumb_release_CFLAGS := $(TARGET_thumb_release_CFLAGS) -marm -fno-omit-frame-pointer
## on some hosts, the target cross-compiler is not available so do not run this command
ifneq ($(wildcard $($(combo_target)CC)),)
$(combo_target)LIBGCC := $(shell $($(combo_target)CC) -mthumb-interwork -print-libgcc-file-name)
endif
$(combo_target)GLOBAL_CFLAGS += \
-march=armv5te -mtune=xscale \
-msoft-float -fpic \
-mthumb-interwork \
-ffunction-sections \
-funwind-tables \
-fstack-protector \
-D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ \
-D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ \
-include $(call select-android-config-h,linux-arm)
$(combo_target)GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden
$(combo_target)RELEASE_CFLAGS := \
-DSK_RELEASE -DNDEBUG \
-O2 -g \
-Wstrict-aliasing=2 \
-finline-functions \
-fno-inline-functions-called-once \
-fgcse-after-reload \
-frerun-cse-after-loop \
-frename-registers
libc_root := bionic/libc
libm_root := bionic/libm
libstdc++_root := bionic/libstdc++
libthread_db_root := bionic/libthread_db
# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
# symlinks located in out/ to point to the appropriate kernel
# headers. see 'config/kernel_headers.make' for more details
#
ifneq ($(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
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_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_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) \
$(PRIVATE_ALL_OBJECTS) \
$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
$(TARGET_LIBGCC) \
$(TARGET_CRTEND_O)
endef
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