Merge pull request #2174 from raminammour/patch-1

arch: Correct `march` to `mcpu` for ppc

devito/arch/compiler.py

@@ -386,7 +386,7 @@ def __init__(self, *args, **kwargs):
 
         platform = kwargs.pop('platform', configuration['platform'])
 
-        self.cflags += ['-march=native', '-Wno-unused-result',
+        self.cflags += ['-Wno-unused-result',
                         '-Wno-unused-variable', '-Wno-unused-but-set-variable']
 
         if configuration['safe-math']:
@@ -400,6 +400,12 @@ def __init__(self, *args, **kwargs):
             # from `=512`
             self.cflags.append('-mprefer-vector-width=512')
 
+        if platform in [POWER8, POWER9]:
+            # -march isn't supported on power architectures, is -mtune needed?
+            self.cflags = ['-mcpu=native'] + self.cflags
+        else:
+            self.cflags = ['-march=native'] + self.cflags
+
         language = kwargs.pop('language', configuration['language'])
         try:
             if self.version >= Version("4.9.0"):