How to build and install the Mono libgdiplus.dll on a Mac with Homebrew

mac-libgdiplus.sh

#!/bin/bash

# First install XQuartz, then...
locate libgdiplus.dylib

brew install freetype fontconfig libpng pgk-config
pkg-config --cflags freetype2
pkg-config --cflags freetype2
ln -s /opt/X11/include/X11 /usr/local/include/X11

git clone https://github.com/mono/libgdiplus.git
cd libgdiplus
#./autogen.sh
./autogen.sh CPPFLAGS="-I/usr/X11/include" CFLAGS="-L/usr/X11/lib"
sudo mkdir /opt
sudo mkdir /opt/mono
./configure --prefix=/opt/mono
# for x64
make
sudo make install

# for Win32 rebuild

rm -rf /opt/mono
# ./configure --prefix=/opt/mono CFLAGS='-m32 -arch i386'
./configure --prefix=/opt/mono CFLAGS='-m32 -arch x86_64'