buildman: Allow architecture to alias to multiple toolchains

Some archs have need than one alias, so support a list of alises in the
..buildman file.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 5 insertions, 3 deletions

diff --git a/tools/buildman/toolchain.py b/tools/buildman/toolchain.py
index cb693f4641..ad4df8cc9b 100644
--- a/tools/buildman/toolchain.py
+++ b/tools/buildman/toolchain.py
@@ -185,9 +185,11 @@ class Toolchains:
         returns:
             toolchain object, or None if none found
         """
-        for name, value in bsettings.GetItems('toolchain-alias'):
-            if arch == name:
-                arch = value
+        for tag, value in bsettings.GetItems('toolchain-alias'):
+            if arch == tag:
+                for alias in value.split():
+                    if alias in self.toolchains:
+                        return self.toolchains[alias]
 
         if not arch in self.toolchains:
             raise ValueError, ("No tool chain found for arch '%s'" % arch)