One 'arch' to rule them all

Define a specific set of 4 architectures that Morph supports, and only
expose that value to morphologies.

Since GNU triplets are very common we also expose a GNU triplet. Other
morphologies should work out their configuration based on MORPH_ARCH.

This commit also removes the morphlib.util.arch() function, which
detected the machine Morph is running on via 'uname -m'. Morph's
architecture names do not necessarily map to the output of 'uname -m'
so we should not rely on it anywhere.

1 files changed, 0 insertions, 15 deletions

diff --git a/morphlib/util.py b/morphlib/util.py
index c3a7ac9f..c77ac8d3 100644
--- a/morphlib/util.py
+++ b/morphlib/util.py
@@ -38,21 +38,6 @@ except NotImplementedError:  # pragma: no cover
 import os
 
 
-def arch():
-    '''Return the CPU architecture of the current host.'''
-    return os.uname()[4]
-
-
-def target(runcmd):  # pragma: no cover
-    '''Returns the machine triplet of the current host'''
-    try:
-        target = runcmd(['cc', '-dumpmachine']).strip()
-    except cliapp.AppException as e:
-        raise morphlib.Error(
-            'Failed to execute host compiler \'cc\': %s' % e)
-    return target
-
-
 def indent(string, spaces=4):
     '''Return ``string`` indented by ``spaces`` spaces.