I got "fatal error: 'complex' file not found"

[matsutakk]

Hi, from Japan.
I tried to install eigency by using pip, that is to say,"pip install eigency"
I got "fatal error: 'complex' file not found"

Here is my environment.
・Mojave 10.14.5
・pip 19.3.1
・gcc 4.2.1
・Python 3.6.8 :: Anaconda, Inc.

I would like someone to tell me what I should do.
Thank you.

[matsutakk]

This solution worked for me.

I added four lines in setup.py of eigency folder.

If anyone has a problem like this, this may be a solution.