commit 2713fcebbae97c6132c9fa61b8db795d29813dc6
author Ying Wang <wangying@google.com> Mon Jun 09 12:31:12 2014 -0700
committer Ying Wang <wangying@google.com> Mon Jun 09 17:48:05 2014 -0700
tree 95f27e5979d78165e0f9daa2648e1fe16141c7be
parent c02752473f958cb1b23ca2f7d3fd1973b665e3c4

Switch to 32-bit-by-default host multilib build.

Also we don't need to force LLVM built from source, for we already force
LLVM to be built as 32-bit.

Bug: 13751317
Change-Id: Ifadf1988d28b60cb06316de50f5bdc1834f1acc0

core/envsetup.mk

diff --git a/core/envsetup.mk b/core/envsetup.mk
index a228fc7..8013e18 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -67,28 +67,32 @@
 $(error Unable to determine HOST_OS from uname -sm: $(UNAME)!)
 endif
 
+# TODO: Replace BUILD_HOST_64bit with a flag that forces 32-bit build,
+# after we default to 64-bit host build.
+ifeq (,$(BUILD_HOST_64bit))
+# Default to 32-bit-by-default multilib host build.
+HOST_PREFER_32_BIT := true
 ifeq ($(HOST_PREFER_32_BIT),true)
-# User asks for multilib build, but use 32-bit as preferred arch.
 BUILD_HOST_64bit := true
 endif
+endif
 
 # HOST_ARCH
 ifneq (,$(findstring x86_64,$(UNAME)))
-  # TODO: Replace BUILD_HOST_64bit with a flag that forces 32-bit build,
-  # after we default to 64-bit host build.
-  ifeq (,$(BUILD_HOST_64bit))
-    HOST_ARCH := x86
-    HOST_2ND_ARCH :=
-  else
-    HOST_ARCH := x86_64
-    HOST_2ND_ARCH := x86
-  endif
+  HOST_ARCH := x86_64
+  HOST_2ND_ARCH := x86
 else ifneq (,$(findstring 86,$(UNAME)))
   # It's not officially supported!
   HOST_ARCH := x86
   HOST_2ND_ARCH :=
 endif
 
+ifeq ($(HOST_PREFER_32_BIT),true)
+SDK_HOST_ARCH := x86
+else
+SDK_HOST_ARCH := $(HOST_ARCH)
+endif
+
 BUILD_ARCH := $(HOST_ARCH)
 BUILD_2ND_ARCH := $(HOST_2ND_ARCH)