install gtk4 macOS

gistfile1.txt

## NOTE ##

If you just need to build, and you don't need to hack on GTK 4 itself, you can
probably just use brew. That is the simplest and fastest way to get started.

```
brew install gtk4
```

At that point, /usr/local/bin/gtk4-demo is there, and all the others.
/usr/local/lib/girepository-1.0 has all the typelibs.


Otherwise, ... its a bit more involved if you dont want to use anything to bootstrap like jhbuild or brew.


# Where we will install to
export INSTALL_PREFIX=$HOME/.local

# Make sure we have access to your python script dir
export PATH="$INSTALL_PREFIX/bin:$HOME/Library/Python/3.8/bin:$PATH"

# Clone repos
git clone https://gitlab.gnome.org/GNOME/gtk.git
git clone https://gitlab.gnome.org/GNOME/gobject-introspection.git
git clone https://github.com/pkgconf/pkgconf.git

# Install Python3 from python.org for Mac OS, unless you have a Python
# install already with headers available. This is needed for the
# gobject-introspection scanner which links against python using
# the venerable Python.h.
https://www.python.org/ftp/python/3.9.1/python-3.9.1-macosx10.9.pkg

# Install python build deps
pip3 install --user ninja
pip3 install --user meson=0.56
pip3 install --user pygments

# Install pkgconf (which has replaced pkg-config in most places)
cd pkgconf
meson _build \
	--prefix=$INSTALL_PREFIX \
	--libdir=lib \
	-Dtests=false
cd _build
ninja install
ln -s $INSTALL_ROOT/bin/pkgconf $INSTALL_ROOT/bin/pkg-config
cd ../..

# Build GTK w/ introspection disabled (until build integration is fixed)
cd gtk
meson _build \
	--prefix=$INSTALL_PREFIX \
	--libdir=lib \
	-Dcpp_std=c++11 \
	-Dintrospection=disabled \
	-Dharfbuzz:coretext=disabled \
	-Dpixman:tests=disabled \
	-Dx11-backend=false
cd _build
ninja install
cd ../..

# Note, to get fontconfig to install correctly, i had to change the order of the
# FileExistsError to be above OSError in the fontconfig install python script?!?

# Bison on macOS is not new enough, so it gets scanner errors
curl -o http://ftp.wayne.edu/gnu/bison/bison-3.7.tar.xz
tar xf bison-3.7.tar.xz
cd bison-3.7
./configure --prefix=$INSTALL_PREFIX
make install
cd ..

# Now build G-I manually into same prefix. pkgconf/meson seem to hide our
# installation include prefix to be less spammy, but that breaks ffi.h
# includes here! override with CFLAGS cause blah
cd gobject-introspection
CFLAGS="-I$INSTALL_PREFIX/include" meson _build \
	--prefix=$INSTALL_PREFIX \	
	--libdir=lib
cd _build
ninja install
cd ../..

# Now rebuild GTK w/ introspection enabled
cd gtk/_build
meson configure -Dintrospection=enabled
ninja install