build system: Docker image creation

Just like Android, Windows binaries are best created in a container.
I still need to push the latest version to docker hub and use it on
Travis, but this way at least the Dockerfile is here.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

scripts/docker/mxe-build-container/Dockerfile

@@ -0,0 +1,75 @@
+From ubuntu:18.04
+
+RUN mkdir -p /win
+ADD settings.mk /win
+RUN apt-get update  &&  apt-get upgrade -y && \
+    apt-get install -y \
+    autoconf \
+    automake \
+    autopoint \
+    bash \
+    binutils \
+    bison \
+    bzip2 \
+    flex \
+    g++ \
+    g++-multilib \
+    gettext \
+    git \
+    gperf \
+    intltool \
+    libc6-dev-i386 \
+    libgdk-pixbuf2.0-dev \
+    libltdl-dev \
+    libssl-dev \
+    libtool-bin \
+    libxml-parser-perl \
+    make \
+    openssl \
+    p7zip-full \
+    patch \
+    perl \
+    pkg-config \
+    python \
+    ruby \
+    sed \
+    unzip \
+    wget \
+    xz-utils \
+    lzip \
+    scons ; \
+    cd /win ; git clone git://github.com/mxe/mxe ; \
+    cd mxe ; \
+    git checkout 9f6b9c6f58510bedfa0bf9f87de9a214abe6b653 ; \
+    mv ../settings.mk . ; \
+    make -j 6 2>&1 | tee build.log ; \
+    mkdir -p neolit ; cd neolit ; git clone -b wip/win http://code.qt.io/cgit/qt/qtconnectivity.git ; \
+    cd qtconnectivity ; \
+    PATH=/win/mxe/usr/bin/:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin /win/mxe/usr/i686-w64-mingw32.shared/qt5/bin/qmake qtconnectivity.pro ; \
+    PATH=/win/mxe/usr/bin/:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin make -j 6 ; \
+    PATH=/win/mxe/usr/bin/:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin make install ; \
+    rm -rf /win/mxe/pkg ; \
+    apt-get purge -y --auto-remove \
+    autopoint \
+    bison \
+    flex \
+    g++ \
+    g++-multilib \
+    gettext \
+    gperf \
+    intltool \
+    libc6-dev-i386 \
+    libgdk-pixbuf2.0-dev \
+    libltdl-dev \
+    libssl-dev \
+    libtool-bin \
+    libxml-parser-perl \
+    openssl \
+    p7zip-full \
+    perl \
+    python \
+    ruby \
+    unzip \
+    xz-utils \
+    lzip \
+    scons

scripts/docker/mxe-build-container/settings.mk

@@ -0,0 +1,15 @@
+# This is a template of configuration file for MXE. See
+# index.html for more extensive documentations.
+
+# This variable controls the number of compilation processes
+# within one package ("intra-package parallelism").
+JOBS := 6
+
+# This variable controls the targets that will build.
+MXE_TARGETS :=  i686-w64-mingw32.shared
+
+# The three lines below makes `make` build these "local packages" instead of all packages.
+LOCAL_PKG_LIST := qtbase qtconnectivity qtdeclarative qtimageformats qtlocation qtmultimedia qtquickcontrols qtquickcontrols2 qtscript qtsvg qttools qttranslations qtwebview qtwebkit libxml2 libxslt libusb1 libgit2 nsis curl libzip libftdi1
+.DEFAULT local-pkg-list:
+local-pkg-list: $(LOCAL_PKG_LIST)
+