Remove HOST_PREFER_32_BIT

HOST_PREFER_32_BIT was used during the switch to 64-bit host tools to
keep the SDK building as 32-bit, but is never set any more.

Change-Id: I874f89c7d1e9cd8c9d4c879048d81a4362ce4dce

core/clang/config.mk

@@ -138,11 +138,6 @@ ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES := libasan
 # provides to Clang (for supporting features like -ftrapv).
 COMPILER_RT_CONFIG_EXTRA_STATIC_LIBRARIES := libcompiler_rt-extras
 
-ifeq ($(HOST_PREFER_32_BIT),true)
-# We don't have 32-bit prebuilt libLLVM/libclang, so force to build them from source.
-FORCE_BUILD_LLVM_COMPONENTS := true
-endif
-
 # A list of projects that are allowed to set LOCAL_CLANG to false.
 # INTERNAL_LOCAL_CLANG_EXCEPTION_PROJECTS is defined later in other config.mk.
 LOCAL_CLANG_EXCEPTION_PROJECTS = \

core/envsetup.mk

@@ -298,11 +298,7 @@ $(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_NATIVE_TESTS := $(HOST_OUT)/nativetest
 
 # The default host library path.
 # It always points to the path where we build libraries in the default bitness.
-ifeq ($(HOST_PREFER_32_BIT),true)
-HOST_LIBRARY_PATH := $($(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_SHARED_LIBRARIES)
-else
 HOST_LIBRARY_PATH := $(HOST_OUT_SHARED_LIBRARIES)
-endif
 
 # Out for HOST_CROSS_2ND_ARCH
 HOST_CROSS_2ND_ARCH_VAR_PREFIX := 2ND_

core/executable_prefer_symlink.mk

@@ -33,11 +33,7 @@ ifneq ($(LOCAL_IS_HOST_MODULE),true)
   endif
 else
   my_symlink := $(addprefix $(HOST_OUT)/bin/, $(LOCAL_MODULE))
-  ifneq ($(HOST_PREFER_32_BIT),true)
-    my_src_binary_name := $(LOCAL_MODULE_STEM_64)
-  else
-    my_src_binary_name := $(LOCAL_MODULE_STEM_32)
-  endif
+  my_src_binary_name := $(LOCAL_MODULE_STEM_64)
 endif
 
 $(call symlink-file,$(my_module_path)/$(my_src_binary_name),$(my_src_binary_name),$(my_symlink))

core/host_executable.mk

@@ -6,14 +6,10 @@ include $(BUILD_SYSTEM)/multilib.mk
 
 ifndef LOCAL_MODULE_HOST_ARCH
 ifndef my_module_multilib
-ifeq ($(HOST_PREFER_32_BIT),true)
-my_module_multilib := 32
-else
 # By default we only build host module for the first arch.
 my_module_multilib := first
 endif
 endif
-endif
 
 ifeq ($(LOCAL_NO_FPIE),)
 LOCAL_LDFLAGS += $(HOST_FPIE_FLAGS)

core/host_shared_library.mk

@@ -6,14 +6,10 @@ include $(BUILD_SYSTEM)/multilib.mk
 
 ifndef LOCAL_MODULE_HOST_ARCH
 ifndef my_module_multilib
-ifeq ($(HOST_PREFER_32_BIT),true)
-my_module_multilib := 32
-else
 # libraries default to building for both architecturess
 my_module_multilib := both
 endif
 endif
-endif
 
 LOCAL_2ND_ARCH_VAR_PREFIX :=
 include $(BUILD_SYSTEM)/module_arch_supported.mk

core/host_static_library.mk

@@ -6,14 +6,10 @@ include $(BUILD_SYSTEM)/multilib.mk
 
 ifndef LOCAL_MODULE_HOST_ARCH
 ifndef my_module_multilib
-ifeq ($(HOST_PREFER_32_BIT),true)
-my_module_multilib := 32
-else
 # libraries default to building for both architecturess
 my_module_multilib := both
 endif
 endif
-endif
 
 LOCAL_2ND_ARCH_VAR_PREFIX :=
 include $(BUILD_SYSTEM)/module_arch_supported.mk

core/soong.mk

@@ -53,7 +53,6 @@ $(SOONG_VARIABLES): FORCE
 	echo '    "Schedboost": $(if $(strip $(ENABLE_SCHEDBOOST)),true,false),'; \
 	echo '    "Binder32bit": $(if $(BINDER32BIT),true,false),'; \
 	echo '    "DevicePrefer32BitExecutables": $(if $(filter true,$(TARGET_PREFER_32_BIT_EXECUTABLES)),true,false),'; \
-	echo '    "HostPrefer32BitExecutables": $(if $(filter true,$(HOST_PREFER_32_BIT)),true,false),'; \
 	echo '    "UseGoma": $(if $(filter-out false,$(USE_GOMA)),true,false),'; \
 	echo ''; \
 	echo '    "DeviceName": "$(TARGET_DEVICE)",'; \