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
diff --git a/core/base_rules.mk b/core/base_rules.mk
index c68fba7..801e2c8 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -98,16 +98,10 @@
$(error $(LOCAL_PATH): LOCAL_MODULE_CLASS must contain exactly one word, not "$(LOCAL_MODULE_CLASS)")
endif
-ifndef LOCAL_IS_HOST_MODULE
-my_32_64_bit_suffix := $(if $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_IS_64_BIT),64,32)
-endif
+my_32_64_bit_suffix := $(if $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)IS_64_BIT),64,32)
ifneq (true,$(LOCAL_UNINSTALLABLE_MODULE))
-ifndef LOCAL_IS_HOST_MODULE
my_multilib_module_path := $(strip $(LOCAL_MODULE_PATH_$(my_32_64_bit_suffix)))
-else
-my_multilib_module_path :=
-endif
ifdef my_multilib_module_path
my_module_path := $(my_multilib_module_path)
else
@@ -148,7 +142,7 @@
my_register_name := $(LOCAL_MODULE)
ifdef LOCAL_2ND_ARCH_VAR_PREFIX
ifndef LOCAL_NO_2ND_ARCH_MODULE_SUFFIX
-my_register_name := $(LOCAL_MODULE)$(TARGET_2ND_ARCH_MODULE_SUFFIX)
+my_register_name := $(LOCAL_MODULE)$($(my_prefix)2ND_ARCH_MODULE_SUFFIX)
endif
endif
# Make sure that this IS_HOST/CLASS/MODULE combination is unique.
@@ -516,6 +510,8 @@
$(LOCAL_INTERMEDIATE_TARGETS) : PRIVATE_INTERMEDIATES_DIR:= $(intermediates)
+$(LOCAL_INTERMEDIATE_TARGETS) : PRIVATE_2ND_ARCH_VAR_PREFIX := $(LOCAL_2ND_ARCH_VAR_PREFIX)
+
# Tell the module and all of its sub-modules who it is.
$(LOCAL_INTERMEDIATE_TARGETS) : PRIVATE_MODULE:= $(my_register_name)