- Enable automatic cross-builds across ARM and MIPS architectures.

tools/utils.py

Index: tools/utils.py
===================================================================
--- tools/utils.py	(revision 33476)
+++ tools/utils.py	(working copy)
@@ -220,7 +220,15 @@
   if conf_os == 'android':
     return '%s%s%s' % (GetBuildMode(mode), conf_os.title(), arch.upper())
   else:
-    return '%s%s' % (GetBuildMode(mode), arch.upper())
+    # Ask for a cross build if the host and target architectures don't match.
+    host_arch = ARCH_GUESS
+    target_arch = arch
+    if target_arch == 'x64':
+      target_arch = 'ia32'
+    cross_build = ''
+    if host_arch != target_arch:
+      cross_build = 'X'
+    return '%s%s%s' % (GetBuildMode(mode), cross_build, arch.upper())
 
 ARCH_GUESS = GuessArchitecture()
 BASE_DIR = os.path.abspath(os.path.join(os.curdir, '..'))