platform_build/core/shared_library.mk
Ying Wang 6feb6d5607 Support host multilib build
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
2014-05-14 16:55:04 -07:00

56 lines
1.4 KiB
Makefile

ifneq ($(LOCAL_MODULE_PATH),)
ifneq ($(TARGET_2ND_ARCH),)
$(warning $(LOCAL_MODULE): LOCAL_MODULE_PATH for shared libraries is unsupported in multiarch builds, use LOCAL_MODULE_RELATIVE_PATH instead)
endif
endif
ifneq ($(LOCAL_UNSTRIPPED_PATH),)
ifneq ($(TARGET_2ND_ARCH),)
$(warning $(LOCAL_MODULE): LOCAL_UNSTRIPPED_PATH for shared libraries is unsupported in multiarch builds)
endif
endif
my_prefix := TARGET_
include $(BUILD_SYSTEM)/multilib.mk
ifndef my_module_multilib
# libraries default to building for both architecturess
my_module_multilib := both
endif
LOCAL_2ND_ARCH_VAR_PREFIX :=
include $(BUILD_SYSTEM)/module_arch_supported.mk
ifeq ($(my_module_arch_supported),true)
include $(BUILD_SYSTEM)/shared_library_internal.mk
endif
ifdef TARGET_2ND_ARCH
LOCAL_2ND_ARCH_VAR_PREFIX := $(TARGET_2ND_ARCH_VAR_PREFIX)
include $(BUILD_SYSTEM)/module_arch_supported.mk
ifeq ($(my_module_arch_supported),true)
# Build for TARGET_2ND_ARCH
OVERRIDE_BUILT_MODULE_PATH :=
LOCAL_BUILT_MODULE :=
LOCAL_INSTALLED_MODULE :=
LOCAL_MODULE_STEM :=
LOCAL_BUILT_MODULE_STEM :=
LOCAL_INSTALLED_MODULE_STEM :=
LOCAL_INTERMEDIATE_TARGETS :=
include $(BUILD_SYSTEM)/shared_library_internal.mk
endif
LOCAL_2ND_ARCH_VAR_PREFIX :=
endif # TARGET_2ND_ARCH
my_module_arch_supported :=
###########################################################
## Copy headers to the install tree
###########################################################
include $(BUILD_COPY_HEADERS)