Enforce 64-bit build environment
We will only support 64-bit build environment beyond froyo/2.2 .
Change-Id: I71eb1230bf0bc12ccde2aeda6255db6a87540437
diff --git a/core/main.mk b/core/main.mk
index b51b3c4..f761ba5 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -60,12 +60,23 @@
# be generated correctly
include $(BUILD_SYSTEM)/cleanbuild.mk
-VERSION_CHECK_SEQUENCE_NUMBER := 1
+VERSION_CHECK_SEQUENCE_NUMBER := 2
-include $(OUT_DIR)/versions_checked.mk
ifneq ($(VERSION_CHECK_SEQUENCE_NUMBER),$(VERSIONS_CHECKED))
$(info Checking build tools versions...)
+ifeq ($(BUILD_OS),linux)
+build_arch := $(shell uname -m)
+ifneq (64,$(findstring 64,$(build_arch)))
+$(warning ************************************************************)
+$(warning You are attempting to build on a 32-bit system.)
+$(warning Only 64-bit build environments are supported beyond froyo/2.2.)
+$(warning ************************************************************)
+$(error stop)
+endif
+endif
+
ifneq ($(HOST_OS),windows)
ifneq ($(HOST_OS)-$(HOST_ARCH),darwin-ppc)
# check for a case sensitive file system