missing jsc.h when building wxpython

I have a 32bit pc with mint 19 running. No problem there. For installing 
wxpython I run this bash-script:

function installWxPython {
    p3=$(python3 --version)
    if [[ $? = 0 ]]; then
        echo "Python3 = $p3"
    else
        echo "Get Python 3"
        exit 1
    fi
    pip3=$(pip3 --version)
    if [[ $? = 0 ]]; then
        echo "Pip = $pip3"
    else
        echo "Get pip for python3"
        exit 1
    fi
    echo "Get some extra's..."
    sudo apt-get -y install dpkg-dev build-essential python3.6-dev 
libjpeg-dev libtiff-dev libpng-dev
    sudo apt-get -y install libgstreamer-plugins-base1.0-dev
    sudo apt-get -y install libwebkitgtk-dev
    sudo apt-get -y install libnotify-dev freeglut3 freeglut3-dev 
libgtk2.0-dev libsm-dev
    sudo apt-get -y install libgtk-3-dev libwebkitgtk-dev 
libwebkitgtk-3.0-dev libwebkit2gtk-4.0-dev
    sudo apt-get -y install python-wxgtk3.0-dev python-wxversion 
python-wxtools
    sudo apt-get -y install libxtst-dev libsdl1.2-dev libsdl2-dev
    sudo apt autoremove -y

    if false; then
        sudo -H pip3 install -U wxPython
        if [[ $? = 0 ]]; then
            exit 0
        fi
    fi
    if true; then
        sudo -H pip3 install -U -f 
https://extras.wxpython.org/wxPython4/extras/linux/gtk3/ubuntu-18.04 
wxPython
        exit $?
    fi
}

I end up with an error:

    In file included from /usr/include/webkitgtk-4.0/webkit2/webkit2.h:54:0,
                     from 
/tmp/pip-build-ac95dka0/wxPython/ext/wxWidgets/src/gtk/webview_webkit2.cpp:23:
    /usr/include/webkitgtk-4.0/webkit2/WebKitJavascriptResult.h:28:10: 
fatal error: jsc/jsc.h: No such file or directory
     #include <jsc/jsc.h>
              ^~~~~~~~~~~
    compilation terminated.
    Makefile:39832: recipe for target 'webviewdll_webview_webkit2.o' failed
    make: *** [webviewdll_webview_webkit2.o] Error 1
    make: *** Waiting for unfinished jobs....
    Error building
    ERROR: failed building wxWidgets
    Traceback (most recent call last):
      File "build.py", line 1321, in cmd_build_wx
        wxbuild.main(wxDir(), build_options)
      File 
"/tmp/pip-build-ac95dka0/wxPython/buildtools/build_wxwidgets.py", line 499, 
in main
        exitIfError(wxBuilder.build(dir=buildDir, options=args), "Error 
building")
      File 
"/tmp/pip-build-ac95dka0/wxPython/buildtools/build_wxwidgets.py", line 85, 
in exitIfError
        raise builder.BuildError(msg)
    buildtools.builder.BuildError: Error building
    Finished command: build_wx (6m34.461s)
    Finished command: build (6m34.461s)
    Command '"/usr/bin/python3" -u build.py build' failed with exit code 1.

Appearently jsc.h is missing. This file is somewehere in webkit, but I 
installed already a number of webkit libraries. Which one is missing ? Or 
should I grab jsc.h from github and dump it somewhere in .../lib,    which 
lib folder? 

Help, anybody, I need some help!

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