diff --git a/tools/ccc/ccclib/Driver.py b/tools/ccc/ccclib/Driver.py
index 1685f0b..46b4541 100644
--- a/tools/ccc/ccclib/Driver.py
+++ b/tools/ccc/ccclib/Driver.py
@@ -466,7 +466,7 @@
                 hasDashM = arg
 
         if not archs:
-            archs.append(args.makeSeparateArg(self.hostInfo.getArchName(),
+            archs.append(args.makeSeparateArg(self.hostInfo.getArchName(args),
                                               self.parser.archOption))
 
         actions = self.buildNormalPipeline(args)
diff --git a/tools/ccc/ccclib/HostInfo.py b/tools/ccc/ccclib/HostInfo.py
index 12fdfef..d976138 100644
--- a/tools/ccc/ccclib/HostInfo.py
+++ b/tools/ccc/ccclib/HostInfo.py
@@ -8,7 +8,7 @@
     def __init__(self, driver):
         self.driver = driver
 
-    def getArchName(self):
+    def getArchName(self, args):
         abstract
 
     def useDriverDriver(self):
@@ -38,7 +38,7 @@
         return True
 
     def getToolChain(self):
-        return self.getToolChainForArch(self.getArchName())
+        return self.getToolChainForArch(self.getArchName(None))
 
     def getToolChainForArch(self, arch):
         if arch in ('i386', 'x86_64'):
@@ -49,19 +49,27 @@
         return ToolChain.Generic_GCC_ToolChain(self.driver)
 
 class DarwinPPCHostInfo(DarwinHostInfo):
-    def getArchName(self):
+    def getArchName(self, args):
+        if args and args.getLastArg(args.parser.m_64Option):
+            return 'ppc64'
         return 'ppc'
 
 class DarwinPPC_64HostInfo(DarwinHostInfo):
-    def getArchName(self):
+    def getArchName(self, args):
+        if args and args.getLastArg(args.parser.m_32Option):
+            return 'ppc'
         return 'ppc64'
 
 class DarwinX86HostInfo(DarwinHostInfo):
-    def getArchName(self):
+    def getArchName(self, args):
+        if args and args.getLastArg(args.parser.m_64Option):
+            return 'x86_64'
         return 'i386'
 
 class DarwinX86_64HostInfo(DarwinHostInfo):
-    def getArchName(self):
+    def getArchName(self, args):
+        if args and args.getLastArg(args.parser.m_32Option):
+            return 'i386'
         return 'x86_64'
 
 def getDarwinHostInfo(driver):