Merge pull request #270 from mfem/fix-macos-install

Fix mac install errors

Author: sshiraiwa

setup.py

@@ -34,12 +34,6 @@
 # except ImportError:
 from distutils.command.clean import clean as _clean
 
-try:
-    from wheel.bdist_wheel import bdist_wheel as _bdist_wheel
-    haveWheel = True
-except ImportError:
-    haveWheel = False
-
 # To use a consistent encoding
 # from codecs import open
 
@@ -71,8 +65,16 @@
 
 osx_sysroot = ''
 
+haveWheel = False
+
 if platform == "linux" or platform == "linux2":
     dylibext = '.so'
+    # Wheel build only works on linux because of chrpath command
+    try:
+        from wheel.bdist_wheel import bdist_wheel as _bdist_wheel
+        haveWheel = True
+    except ImportError:
+        print("Skipping wheel build; wheel not installed.")
 elif platform == "darwin":
     # OS X
     dylibext = '.dylib'