R49 is available now ?

[hydra3333]

R49 requires python 3.8.2.

I had a go, got python lib 3.8.2 to build/install, however not R49 as it encountered a folder not found type of issue.

Would appreciate your having a go :)

[hydra3333]

if it helps, here's what appears to be the relevant MABS code

if  { ! mpv_disabled vapoursynth || enabled vapoursynth; }; then
    _python_ver=3.8.2
    _python_lib=python38
    [[ $bits = 64bit ]] && _arch=amd64 || _arch=win32
    _check=("lib$_python_lib.a")
    if files_exist "${_check[@]}"; then
        do_print_status "python $_python_ver" "$green" "Up-to-date"
    elif do_wget "https://www.python.org/ftp/python/$_python_ver/python-$_python_ver-embed-$_arch.zip"; then
        gendef "$_python_lib.dll" >/dev/null 2>&1
        dlltool -y "lib$_python_lib.a" -d "$_python_lib.def"
        [[ -f "lib$_python_lib.a" ]] && do_install "lib$_python_lib.a"
        do_checkIfExist
    fi

    _vsver=49
    _check=(lib{vapoursynth,vsscript}.a vapoursynth{,-script}.pc vapoursynth/{VS{Helper,Script},VapourSynth}.h)
    if pc_exists "vapoursynth = $_vsver" && files_exist "${_check[@]}"; then
        do_print_status "vapoursynth R$_vsver" "$green" "Up-to-date"
    elif do_wget "https://github.com/vapoursynth/vapoursynth/releases/download/R$_vsver/VapourSynth${bits%bit}-Portable-R$_vsver.7z"; then
        do_uninstall {vapoursynth,vsscript}.lib include/vapoursynth "${_check[@]}"
        do_install sdk/include/*.h include/vapoursynth/

        create_build_dir
        declare -A _pc_vars=(
            [vapoursynth-name]=vapoursynth
            [vapoursynth-description]='A frameserver for the 21st century'
            [vapoursynth-cflags]="-DVS_CORE_EXPORTS"

            [vsscript-name]=vapoursynth-script
            [vsscript-description]='Library for interfacing VapourSynth with Python'
            [vsscript-private]="-l$_python_lib -lstdc++"
        )
        for _file in vapoursynth vsscript; do
            gendef - "../$_file.dll" 2>/dev/null |
                sed -E 's|^_||;s|@[1-9]+$||' > "${_file}.def"
            # shellcheck disable=SC2046
            dlltool -y "lib${_file}.a" -d "${_file}.def" \
                $([[ $bits = 32bit ]] && echo "-U") 2>/dev/null
            [[ -f lib${_file}.a ]] && do_install "lib${_file}.a"
            # shellcheck disable=SC2016
            printf '%s\n' \
               "prefix=$LOCALDESTDIR" \
               'exec_prefix=${prefix}' \
               'libdir=${exec_prefix}/lib' \
               'includedir=${prefix}/include/vapoursynth' \
               "Name: ${_pc_vars[${_file}-name]}" \
               "Description: ${_pc_vars[${_file}-description]}" \
               "Version: $_vsver" \
               "Libs: -L\${libdir} -l${_file}" \
               "Libs.private: ${_pc_vars[${_file}-private]}" \
               "Cflags: -I\${includedir} ${_pc_vars[${_file}-cflags]}" \
               > "${_pc_vars[${_file}-name]}.pc"
        done

        do_install vapoursynth{,-script}.pc lib/pkgconfig/
        do_checkIfExist
    fi
    unset _arch _file _python_lib _python_ver _vsver _pc_vars
else
    mpv_disable vapoursynth
    do_removeOption --enable-vapoursynth
fi

[hydra3333]

references https://github.com/DeadSix27/python_cross_compile_script/issues/110 https://github.com/DeadSix27/python_mingw_libs/issues/6

[DeadSix27]

https://github.com/DeadSix27/python_mingw_libs/commit/9ae731f69575d6e688132a03d65f93acbfe60319