v1.1
Extract gtk+-2.24.33-static-mingw-w64-<arch>_gcc8.1.0.tar.xz into the root / (i.e. /gtk2-static/mingw<NN>) on MSYS2.
Execute source /gtk2-static/mingw<NN>/gtkvars.sh before use.
Extract gtk+-2.24.33-static-mingw-w64-<arch>_gcc8.1.0.tar.xz into the root / (i.e. /gtk2-static/mingw<NN>) on MSYS2.
Execute source /gtk2-static/mingw<NN>/gtkvars.sh before use.