Running the installation for "build from source" for mac fails.
https://mxnet.incubator.apache.org/install/index.html?platform=MacOS&language=Python&processor=CPU#validate-mxnet-installation
It has you run a shell script.
Two issues:
1. It detects a previous version, but fails to remove it.
```
MXNet 1.0.0.post4 is already installed.
This installation might interfere with current installation attempt.
Do you want to remove installed version? (y/n): y
Skipping mxnet as it is not installed.
MXNet 1.0.0.post4 is already installed.
This installation might interfere with current installation attempt.
Do you want to remove installed version? (y/n): y
Skipping mxnet as it is not installed.
MXNet 1.0.0.post4 is already installed.
This installation might interfere with current installation attempt.
```
2. Then later the test fails:
```
BEGIN: Test MXNet
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "mxnet/__init__.py", line 24, in <module>
from .context import Context, current_context, cpu, gpu, cpu_pinned
File "mxnet/context.py", line 24, in <module>
from .base import classproperty, with_metaclass, _MXClassPropertyMetaClass
File "mxnet/base.py", line 214, in <module>
_LIB = _load_lib()
File "mxnet/base.py", line 205, in _load_lib
lib = ctypes.CDLL(lib_path[0], ctypes.RTLD_LOCAL)
File
"/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/__init__.py",
line 365, in __init__
self._handle = _dlopen(self._name, mode)
OSError: dlopen(/Users/markhama/mxnet/python/mxnet/../../lib/libmxnet.so, 6):
Library not loaded: /usr/local/opt/ffmpeg/lib/libavcodec.57.dylib
Referenced from: /usr/local/opt/opencv/lib/libopencv_videoio.3.3.dylib
Reason: image not found
0a1,2
> [[2. 2. 2.]
> [2. 2. 2.]]
ERROR: Following files differ: mxnet_test.log mxnet_test.expected
ERROR: MXNet test failed
END: Test MXNet
:-(
```
Importing mxnet yields a warning:
```
>>> import mxnet
dyld: warning, LC_RPATH ${ORIGIN} in
/Users/markhama/Library/Python/2.7/lib/python/site-packages/mxnet/libmxnet.so
being ignored in restricted program because it is a relative path
>>>
```
[ Full content available at:
https://github.com/apache/incubator-mxnet/issues/12373 ]
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