* commit '9e8ee4dd6ae56ee541a2c858039e29314a6923d6': build linker and linker64 on 64-bit architectures
This commit is contained in:
Colin Cross
Android Git Automerger
commit
0d873f8950
@ -1,86 +1,9 @@
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LOCAL_PATH:= $(call my-dir)
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LOCAL_PATH:= $(call my-dir)
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include $(CLEAR_VARS)
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ifeq ($(TARGET_ARCH),x86)
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linker_2nd_arch_var_prefix :=
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linker_begin_extension := c
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include $(LOCAL_PATH)/linker.mk
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else
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linker_begin_extension := S
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ifdef TARGET_2ND_ARCH
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linker_2nd_arch_var_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX)
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include $(LOCAL_PATH)/linker.mk
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endif
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endif
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LOCAL_SRC_FILES:= \
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arch/$(TARGET_ARCH)/begin.$(linker_begin_extension) \
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debugger.cpp \
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dlfcn.cpp \
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linker.cpp \
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linker_environ.cpp \
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linker_phdr.cpp \
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rt.cpp \
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LOCAL_LDFLAGS := \
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-shared \
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-Wl,-Bsymbolic \
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-Wl,--exclude-libs,ALL \
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LOCAL_CFLAGS += \
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-fno-stack-protector \
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-Wstrict-overflow=5 \
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-fvisibility=hidden \
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-Wall -Wextra -Werror \
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LOCAL_CONLYFLAGS += \
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-std=gnu99 \
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LOCAL_CPPFLAGS += \
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-std=gnu++11 \
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# We need to access Bionic private headers in the linker.
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LOCAL_CFLAGS += -I$(LOCAL_PATH)/../libc/
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ifeq ($(TARGET_IS_64_BIT),true)
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LOCAL_MODULE := linker64
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else
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LOCAL_MODULE := linker
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endif
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LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
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LOCAL_STATIC_LIBRARIES := libc_nomalloc
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#LOCAL_FORCE_STATIC_EXECUTABLE := true # not necessary when not including BUILD_EXECUTABLE
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#
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# include $(BUILD_EXECUTABLE)
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#
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# Instead of including $(BUILD_EXECUTABLE), we execute the steps to create an executable by
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# hand, as we want to insert an extra step that is not supported by the build system, and
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# is probably specific the linker only, so there's no need to modify the build system for
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# the purpose.
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LOCAL_MODULE_CLASS := EXECUTABLES
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LOCAL_MODULE_SUFFIX := $(TARGET_EXECUTABLE_SUFFIX)
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# we don't want crtbegin.o (because we have begin.o), so unset it
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# just for this module
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LOCAL_NO_CRT := true
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# TODO: split out the asflags.
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LOCAL_ASFLAGS := $(LOCAL_CFLAGS)
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include $(BUILD_SYSTEM)/dynamic_binary.mk
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# See build/core/executable.mk
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$(linked_module): PRIVATE_TARGET_GLOBAL_LD_DIRS := $(TARGET_GLOBAL_LD_DIRS)
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$(linked_module): PRIVATE_TARGET_GLOBAL_LDFLAGS := $(TARGET_GLOBAL_LDFLAGS)
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$(linked_module): PRIVATE_TARGET_FDO_LIB := $(TARGET_FDO_LIB)
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$(linked_module): PRIVATE_TARGET_LIBGCC := $(TARGET_LIBGCC)
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$(linked_module): PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_CRTBEGIN_DYNAMIC_O)
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$(linked_module): PRIVATE_TARGET_CRTBEGIN_STATIC_O := $(TARGET_CRTBEGIN_STATIC_O)
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$(linked_module): PRIVATE_TARGET_CRTEND_O := $(TARGET_CRTEND_O)
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$(linked_module): $(TARGET_CRTBEGIN_STATIC_O) $(all_objects) $(all_libraries) $(TARGET_CRTEND_O)
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$(transform-o-to-static-executable)
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@echo "target PrefixSymbols: $(PRIVATE_MODULE) ($@)"
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$(hide) $(TARGET_OBJCOPY) --prefix-symbols=__dl_ $@
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#
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# end of BUILD_EXECUTABLE hack
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#
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58
linker/linker.mk
Normal file
58
linker/linker.mk
Normal file
@ -0,0 +1,58 @@
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LOCAL_PATH:= $(call my-dir)
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include $(CLEAR_VARS)
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LOCAL_SRC_FILES:= \
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debugger.cpp \
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dlfcn.cpp \
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linker.cpp \
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linker_environ.cpp \
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linker_phdr.cpp \
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rt.cpp \
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LOCAL_SRC_FILES_arm := arch/arm/begin.S
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LOCAL_SRC_FILES_arm64 := arch/arm64/begin.S
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LOCAL_SRC_FILES_x86 := arch/x86/begin.c
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LOCAL_SRC_FILES_x86_64 := arch/x86_64/begin.S
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LOCAL_SRC_FILES_mips := arch/mips/begin.S
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LOCAL_LDFLAGS := \
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-shared \
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-Wl,-Bsymbolic \
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-Wl,--exclude-libs,ALL \
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LOCAL_CFLAGS += \
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-fno-stack-protector \
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-Wstrict-overflow=5 \
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-fvisibility=hidden \
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-Wall -Wextra -Werror \
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LOCAL_CONLYFLAGS += \
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-std=gnu99 \
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LOCAL_CPPFLAGS += \
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-std=gnu++11 \
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# We need to access Bionic private headers in the linker.
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LOCAL_CFLAGS += -I$(LOCAL_PATH)/../libc/
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# we don't want crtbegin.o (because we have begin.o), so unset it
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# just for this module
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LOCAL_NO_CRT := true
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# TODO: split out the asflags.
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LOCAL_ASFLAGS := $(LOCAL_CFLAGS)
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LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk $(LOCAL_PATH)/linker.mk $(LOCAL_PATH)/linker_executable.mk
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LOCAL_STATIC_LIBRARIES := libc_nomalloc
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LOCAL_FORCE_STATIC_EXECUTABLE := true # not necessary when not including BUILD_EXECUTABLE
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LOCAL_2ND_ARCH_VAR_PREFIX := $(linker_2nd_arch_var_prefix)
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ifeq ($(TARGET_IS_64_BIT)|$(linker_2nd_arch_var_prefix),true|)
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LOCAL_MODULE := linker64
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else
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LOCAL_MODULE := linker
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endif
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include $(LOCAL_PATH)/linker_executable.mk
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26
linker/linker_executable.mk
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26
linker/linker_executable.mk
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@ -0,0 +1,26 @@
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#
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# Instead of including $(BUILD_EXECUTABLE), we execute the steps to create an executable by
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# hand, as we want to insert an extra objcopy step that is not supported by the build
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# system, and is probably specific the linker only, so there's no need to modify the build
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# system for the purpose.
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#
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LOCAL_MODULE_CLASS := EXECUTABLES
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LOCAL_MODULE_SUFFIX := $(TARGET_EXECUTABLE_SUFFIX)
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include $(BUILD_SYSTEM)/dynamic_binary.mk
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# See build/core/executable_internal.mk
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$(linked_module): PRIVATE_TARGET_GLOBAL_LD_DIRS := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_GLOBAL_LD_DIRS)
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$(linked_module): PRIVATE_TARGET_GLOBAL_LDFLAGS := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_GLOBAL_LDFLAGS)
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$(linked_module): PRIVATE_TARGET_FDO_LIB := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_FDO_LIB)
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$(linked_module): PRIVATE_TARGET_LIBGCC := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_LIBGCC)
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$(linked_module): PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_CRTBEGIN_DYNAMIC_O)
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$(linked_module): PRIVATE_TARGET_CRTBEGIN_STATIC_O := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_CRTBEGIN_STATIC_O)
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$(linked_module): PRIVATE_TARGET_CRTEND_O := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_CRTEND_O)
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$(linked_module): PRIVATE_TARGET_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY)
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$(linked_module): $(TARGET_CRTBEGIN_STATIC_O) $(all_objects) $(all_libraries) $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_CRTEND_O)
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$(transform-o-to-static-executable)
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@echo "target PrefixSymbols: $(PRIVATE_MODULE) ($@)"
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$(hide) $(PRIVATE_TARGET_OBJCOPY) --prefix-symbols=__dl_ $@
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