6feb6d5607
This change basically ported our target multilib to the host side. It supports 2 host build modes: x86 and x86_64 multilib build. For now you need to set "BUILD_HOST_64bit=true" to switch to x86_64 multilib build. Later we'll default to x86_64 build and have a flag to force 32-bit only build, which may be needed by SDK build. In host module definition, like in target ones, you can use the following LOCAL variables to set up multilib configuration: LOCAL_MULTILIB: can be "both", "first", "32" or "64". It also supports the same set of arch or 32-vs-64 specific LOCAL variables. By default, it builds only for the first arch. To keep path compatibility, in x86_64 build files are still output to out/host/linux-x86; Both 32-bit and 64-bit executables are in out/host/linux-86/bin; In x86_64 build 32-bit shared libraries are installed to out/host/linux-x86/lib32 and 64-bit shared libraries are installed to out/host/linux-x86/lib; 32-bit object files are output to out/host/linux-x86/obj32 and 64-bit object files are output to out/host/linux-x86/obj. Bug: 13751317 Change-Id: I6044f83b7db369a33e05209e8c588eb6dc83409f
73 lines
2.4 KiB
Makefile
73 lines
2.4 KiB
Makefile
# We don't automatically set up rules to build executables for both
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# TARGET_ARCH and TARGET_2ND_ARCH.
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# By default, an executable is built for TARGET_ARCH.
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# To build it for TARGET_2ND_ARCH in a 64bit product, use "LOCAL_MULTILIB := 32"
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# To build it for both set LOCAL_MULTILIB := both and specify
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# LOCAL_MODULE_PATH_32 and LOCAL_MODULE_PATH_64 or LOCAL_MODULE_STEM_32 and
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# LOCAL_MODULE_STEM_64
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my_prefix := TARGET_
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include $(BUILD_SYSTEM)/multilib.mk
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ifeq ($(my_module_multilib),both)
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ifeq ($(LOCAL_MODULE_PATH_32)$(LOCAL_MODULE_STEM_32),)
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$(error $(LOCAL_PATH): LOCAL_MODULE_STEM_32 or LOCAL_MODULE_PATH_32 is required for LOCAL_MULTILIB := both for module $(LOCAL_MODULE))
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endif
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ifeq ($(LOCAL_MODULE_PATH_64)$(LOCAL_MODULE_STEM_64),)
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$(error $(LOCAL_PATH): LOCAL_MODULE_STEM_64 or LOCAL_MODULE_PATH_64 is required for LOCAL_MULTILIB := both for module $(LOCAL_MODULE))
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endif
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else #!LOCAL_MULTILIB == both
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LOCAL_NO_2ND_ARCH_MODULE_SUFFIX := true
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endif
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# if TARGET_PREFER_32_BIT_EXECUTABLES is set, try to build 32-bit first
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ifdef TARGET_2ND_ARCH
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ifeq ($(TARGET_PREFER_32_BIT_EXECUTABLES),true)
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LOCAL_2ND_ARCH_VAR_PREFIX := $(TARGET_2ND_ARCH_VAR_PREFIX)
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else
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LOCAL_2ND_ARCH_VAR_PREFIX :=
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endif
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endif
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my_skip_non_preferred_arch :=
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# check if preferred arch is supported
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include $(BUILD_SYSTEM)/module_arch_supported.mk
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ifeq ($(my_module_arch_supported),true)
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# first arch is supported
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include $(BUILD_SYSTEM)/executable_internal.mk
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ifneq ($(my_module_multilib),both)
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my_skip_non_preferred_arch := true
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endif
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endif
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# check if preferred arch was not supported or asked to build both
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ifndef my_skip_non_preferred_arch
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ifdef TARGET_2ND_ARCH
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# check if the non-preferred arch is the primary or secondary
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ifeq ($(TARGET_PREFER_32_BIT_EXECUTABLES),true)
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LOCAL_2ND_ARCH_VAR_PREFIX :=
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else
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LOCAL_2ND_ARCH_VAR_PREFIX := $(TARGET_2ND_ARCH_VAR_PREFIX)
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endif
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# check if non-preferred arch is supported
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include $(BUILD_SYSTEM)/module_arch_supported.mk
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ifeq ($(my_module_arch_supported),true)
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# non-preferred arch is supported
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OVERRIDE_BUILT_MODULE_PATH :=
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LOCAL_BUILT_MODULE :=
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LOCAL_INSTALLED_MODULE :=
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LOCAL_MODULE_STEM :=
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LOCAL_BUILT_MODULE_STEM :=
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LOCAL_INSTALLED_MODULE_STEM :=
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LOCAL_INTERMEDIATE_TARGETS :=
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include $(BUILD_SYSTEM)/executable_internal.mk
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endif
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endif # TARGET_2ND_ARCH
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endif # !my_skip_non_preferred_arch || LOCAL_MULTILIB
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LOCAL_2ND_ARCH_VAR_PREFIX :=
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LOCAL_NO_2ND_ARCH_MODULE_SUFFIX :=
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my_module_arch_supported :=
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