diff --git a/gcc-5.5.0-1.build.sh b/gcc-5.5.0-1.build.sh
new file mode 100755
index 0000000..36becfa
--- /dev/null
+++ b/gcc-5.5.0-1.build.sh
@@ -0,0 +1,149 @@
+#! /bin/bash
+
+# COOKIE=$(mcookie); grep -v V_GREP_ME $0 > /dev/shm/runme-$COOKIE.sh ; sleep 1; exec bash /dev/shm/runme-$COOKIE.sh
+
+PKG=gcc
+VERSION=5.5.0
+BUILD=1
+# URL=http://ftp.gnu.org/gnu/gcc/gcc-${VERSION}/gcc-${VERSION}.tar.gz
+URL=ftp://ftp.fu-berlin.de/unix/languages/gcc/releases/gcc-$VERSION/gcc-$VERSION.tar.xz
+SRC=$( echo $URL | rev | cut -d/ -f1 | rev )
+
+# gcc 3.4 didn't need this to build java (back in the good old days ...)
+ECJ_URL=ftp://sourceware.org/pub/java/ecj-latest.jar
+ECJ_JAR=$( echo $ECJ_URL | rev | cut -d/ -f1 | rev )
+
+PREFIX=/pkg/$PKG-$VERSION-$BUILD
+# PREFIX=/dev/shm/pkg/$PKG-$VERSION-$BUILD
+
+set -xe
+umask 022
+
+BUILD_TMPDIR=/dev/shm/$PKG-$VERSION-$BUILD.build.tmp
+test -d $BUILD_TMPDIR && rm -rf $BUILD_TMPDIR
+mkdir -p $BUILD_TMPDIR/home
+export TMPDIR=$BUILD_TMPDIR
+export HOME=$BUILD_TMPDIR/home
+
+exec </dev/null
+
+PATH=/bin:/usr/bin:/usr/sbin:/usr/local/package/bin:/usr/local/bin
+
+mkdir -p $PREFIX
+cat >$PREFIX/profile <<-EOF
+	PATH=$PREFIX/bin:\$PATH
+	LD_LIBRARY_PATH=$PREFIX/lib64\${LD_LIBRARY_PATH:+:}\$LD_LIBRARY_PATH
+	export LD_LIBRARY_PATH
+EOF
+. $PREFIX/profile
+
+BUILDDIR=$PREFIX/build
+
+mkdir -p $BUILDDIR
+cd $BUILDDIR
+
+test -e $SRC || wget $URL
+test -n 'XWIPE' && rm -rf ./gcc-$VERSION ./gcc-$VERSION-build
+test -d gcc-$VERSION || tar xf $SRC
+
+# Copy ecj.jar into the TLD of the source. Needed to build the java compiler.
+test -e $ECJ_JAR || wget $ECJ_URL
+test -e gcc-$VERSION/ecj.jar || cp $ECJ_JAR gcc-$VERSION/ecj.jar
+
+mkdir -p gcc-$VERSION-build
+
+cd gcc-$VERSION-build
+
+../gcc-$VERSION/configure \
+  --prefix=$PREFIX \
+  --enable-shared \
+  --enable-bootstrap \
+  --enable-threads=posix \
+  --enable-checking=release \
+  --enable-clocale=gnu \
+  --enable-languages=c,c++,fortran,objc,obj-c++,go,java,lto \
+  --disable-multilib \
+  --enable-objc-gc \
+  --with-system-zlib \
+  --enable-libstdcxx-dual-abi \
+  --with-default-libstdcxx-abi=gcc4-compatible \
+  --enable-__cxa_atexit \
+  --enable-libssp \
+  --enable-lto \
+  --enable-java-awt=gtk \
+  --disable-gtktest \
+  --verbose
+
+make -j $(nproc)
+# make -k check 2>&1 | tee check.log
+make install
+
+cd $PREFIX
+mkdir -vp lib64
+ln -sv ${PREFIX}/bin/cpp lib64/
+test -e bin/cc || ln -sv gcc bin/cc
+
+install -v -dm755 lib64/bfd-plugins
+ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/$VERSION/liblto_plugin.so lib64/bfd-plugins/
+
+# and dump these ...
+rm -v lib64/*-gdb.py
+
+# ++++++++++++++++++ Prepare OpenJDK build ++++++++++++++++++
+
+# create a JDK compatible directory structure below $PREFIX/lib/jvm (yes, 'lib')
+# emulation is required in order to compile OpenJDK using GNU java
+# Main author: Eric Hameleers <alien@slackware.com> December 2011
+
+cd $PREFIX
+
+JVM=$PREFIX/lib/jvm
+BINDIR=$PREFIX/bin
+LIB_ARCH=amd64 # not kidding, grep amd64 in openjdk-boot/jdk/make/jdk_generic_profile.sh ;)
+
+GCJVER=$(gcj -dumpversion)
+# next yields a '16'
+GCJSOVER=$( readlink -f $(gcj -print-file-name=libgcj.so) | rev | cut -d. -f3 | rev )
+
+# remove the old set of symlinks if they should exist:
+rm -fr $JVM
+
+mkdir -p $JVM
+mkdir -p $JVM/bin
+mkdir -p $JVM/jre/bin
+mkdir -p $JVM/jre/lib/${LIB_ARCH}/client
+mkdir -p $JVM/jre/lib/${LIB_ARCH}/server
+mkdir -p $JVM/lib
+
+ln -sf $BINDIR/gjar $JVM/bin/jar
+ln -sf $BINDIR/grmic $JVM/bin/rmic
+ln -sf $BINDIR/gjavah $JVM/bin/javah
+ln -sf $BINDIR/jcf-dump $JVM/bin/javap
+ln -sf $BINDIR/gappletviewer $JVM/bin/appletviewer
+ln -sf $BINDIR/grmiregistry $JVM/bin/rmiregistry
+ln -sf $BINDIR/grmiregistry $JVM/jre/bin/rmiregistry
+ln -sf $BINDIR/gkeytool $JVM/bin/keytool
+ln -sf $BINDIR/gkeytool $JVM/jre/bin/keytool
+ln -sf $BINDIR/gij $JVM/bin/java
+ln -sf $BINDIR/ecj $JVM/bin/javac
+ln -sf $BINDIR/gnative2ascii $JVM/bin/native2ascii
+ln -sf $PREFIX/lib/gcj-${GCJVER}-$GCJSOVER/libjvm.so $JVM/jre/lib/${LIB_ARCH}/client/libjvm.so
+ln -sf $PREFIX/lib/gcj-${GCJVER}-$GCJSOVER/libjvm.so $JVM/jre/lib/${LIB_ARCH}/server/libjvm.so
+ln -sf $PREFIX/lib/gcj-${GCJVER}-$GCJSOVER/libjawt.so $JVM/jre/lib/${LIB_ARCH}/libjawt.so
+ln -sf $PREFIX/share/java/libgcj-${GCJVER}.jar $JVM/jre/lib/rt.jar
+ln -sf $PREFIX/share/java/libgcj-tools-${GCJVER}.jar $JVM/lib/tools.jar
+ln -sf $PREFIX/include/c++/${GCJVER}/gnu/java $JVM/include
+
+# Add a Eclipse Java Compiler wrapper which is required
+# for bootstrapping OpenJDK using GNU java:
+cat <<EOT > $PREFIX/bin/ecj
+#!/bin/sh
+
+CLASSPATH=$PREFIX/share/java/ecj.jar\${CLASSPATH:+:}\$CLASSPATH \
+  java org.eclipse.jdt.internal.compiler.batch.Main "\$@"
+
+EOT
+chmod 755 $PREFIX/bin/ecj
+
+# exit 1 # inhibit 'closing'
+exit
diff --git a/openjdk-7u181-0.build.sh b/openjdk-7u181-0.build.sh
new file mode 100755
index 0000000..260eec0
--- /dev/null
+++ b/openjdk-7u181-0.build.sh
@@ -0,0 +1,132 @@
+#! /bin/bash
+
+# COOKIE=$(mcookie); grep -v V_GREP_ME $0 > /dev/shm/runme-$COOKIE.sh ; sleep 1; exec bash /dev/shm/runme-$COOKIE.sh
+
+set -xe
+umask 022
+
+PKG=openjdk
+VERSION=7u181
+BUILD=0
+PREFIX=/pkg/$PKG-$VERSION-$BUILD
+# PREFIX=/dev/shm/pkg/$PKG-$VERSION-$BUILD
+
+ICEDTEA=icedtea-2.6.14
+ICEDTEA_VER=$(echo $ICEDTEA | cut -f2 -d-)
+
+GCJ=/pkg/gcc-5.5.0-1
+
+# the build has its own opinion of parallel builds, high counts seem to be instable:
+PARALLELJOBS=${PARALLELJOBS:-4}
+
+SOURCES=(http://icedtea.classpath.org/download/source/icedtea-$ICEDTEA_VER.tar.xz \
+         http://icedtea.classpath.org/download/drops/icedtea7/$ICEDTEA_VER/openjdk.tar.bz2 \
+         http://icedtea.classpath.org/download/drops/icedtea7/$ICEDTEA_VER/corba.tar.bz2 \
+         http://icedtea.classpath.org/download/drops/icedtea7/$ICEDTEA_VER/jaxp.tar.bz2 \
+         http://icedtea.classpath.org/download/drops/icedtea7/$ICEDTEA_VER/jaxws.tar.bz2 \
+         http://icedtea.classpath.org/download/drops/icedtea7/$ICEDTEA_VER/jdk.tar.bz2 \
+         http://icedtea.classpath.org/download/drops/icedtea7/$ICEDTEA_VER/langtools.tar.bz2 \
+         http://icedtea.classpath.org/download/drops/icedtea7/$ICEDTEA_VER/hotspot.tar.bz2)
+
+MD5SUMS=(ec7bf064e33e35dd3845d044e175a698 \
+         307abf13b695c61a8b16d9fa384277db \
+         96b72013cce3000cb46808aa9f9bce40 \
+         d3c9cf8e51c043bdb0db360ffaf34d8c \
+         f087bbcaffbb65906514448dc49f173e \
+         6580efb17017a4a9402a4a5043374bd7 \
+         1518c296a6125af5119aa5442d88bebf \
+         b190d917e60aeba3d9b7d1c61660ea68)
+
+COUNT_1=$(( ${#SOURCES[@]} - 1 ))
+
+function fetch_preprocess() {
+  local url=$1
+  local md5=$2
+  local opt_unpack=$3
+  local tar=$(echo $url | rev | cut -f1 -d/ | rev)
+  local dir=$(echo $tar | rev | cut -f3- -d. | rev)
+
+  (
+    cd $BUILDDIR
+    echo "$md5  $tar" > $tar.md5
+    test -e $tar || wget $url 
+    md5sum -c $tar.md5
+    test -n 'XWIPE' && rm -rf ./$dir
+    if test -n "$opt_unpack"; then
+      test -d $dir || tar xf $tar
+    fi
+  )
+}
+
+BUILD_TMPDIR=/dev/shm/$PKG-$VERSION-$BUILD.build.tmp
+test -d $BUILD_TMPDIR && rm -rf $BUILD_TMPDIR
+mkdir -p $BUILD_TMPDIR/home
+export TMPDIR=$BUILD_TMPDIR
+export HOME=$BUILD_TMPDIR/home
+
+mkdir -p $PREFIX
+cat >$PREFIX/profile <<-EOF
+	PATH=$PREFIX/bin:\$PATH
+EOF
+
+source $PREFIX/profile
+
+BOOT_JAVA=$GCJ/lib/jvm
+source $GCJ/profile
+
+BUILDDIR=$PREFIX/build
+mkdir -p $BUILDDIR
+cd $BUILDDIR
+
+fetch_preprocess ${SOURCES[0]} ${MD5SUMS[0]} 'yes'
+for X in $(seq 1 $COUNT_1); do
+  fetch_preprocess ${SOURCES[$X]} ${MD5SUMS[$X]}
+done
+
+# recent cacerts taken from CentOS package, so Red Hat is at least of some use ...
+(
+  CACERTS_URL=http://mirror.centos.org/centos/6/os/x86_64/Packages
+  RPM=ca-certificates-2018.2.22-65.1.el6.noarch.rpm
+  mkdir -p $BUILDDIR/tmp-certificates
+  cd $BUILDDIR/tmp-certificates
+  test -e $RPM || wget $CACERTS_URL/$RPM
+  test -d ./etc || rpm2cpio $RPM | cpio -imVd
+  cp etc/pki/java/cacerts $BUILDDIR
+)
+
+mkdir -p icedtea-build
+cd icedtea-build
+
+JAVA_HOME=${BOOT_JAVA} PATH=${BOOT_JAVA}/bin:$PATH \
+../$ICEDTEA/configure \
+    --with-jdk-home=${BOOT_JAVA} \
+    --without-rhino \
+    --disable-system-kerberos \
+    --disable-system-pcsc \
+    --disable-system-sctp \
+    --with-cacerts-file="$BUILDDIR/cacerts" \
+    --with-openjdk-src-zip="$BUILDDIR/openjdk.tar.bz2" \
+    --with-corba-src-zip="$BUILDDIR/corba.tar.bz2" \
+    --with-jaxp-src-zip="$BUILDDIR/jaxp.tar.bz2" \
+    --with-jaxws-src-zip="$BUILDDIR/jaxws.tar.bz2" \
+    --with-jdk-src-zip="$BUILDDIR/jdk.tar.bz2" \
+    --with-langtools-src-zip="$BUILDDIR/langtools.tar.bz2" \
+    --with-hotspot-src-zip="$BUILDDIR/hotspot.tar.bz2" \
+    --disable-docs \
+    --with-parallel-jobs=$PARALLELJOBS \
+    --disable-downloading
+
+# ALT_UNIXCOMMAND_PATH is needed, otherwise make fails due to 'missing' /bin/touch & /bin/cpio
+# ... make/common/shared/Defs-linux.gmk
+# UNIXCOMMAND_PATH: path to where the most common Unix commands are.
+#  NOTE: Must end with / so that it could be empty, allowing PATH usage.
+#
+# From time to time the build fails (1 outof 5), if so, start over.
+ALT_UNIXCOMMAND_PATH=/usr/bin/ JAVA_HOME=${BOOT_JAVA} PATH=${BOOT_JAVA}/bin:$PATH LOG=trace \
+make
+
+# install
+cp -a $BUILDDIR/icedtea-build/openjdk.build/j2sdk-image/* $PREFIX
+
+# exit 1 # inhibit closing
+exit
diff --git a/openjdk-8u171-0.build.sh b/openjdk-8u171-0.build.sh
new file mode 100755
index 0000000..6c7fbfe
--- /dev/null
+++ b/openjdk-8u171-0.build.sh
@@ -0,0 +1,132 @@
+#! /bin/bash
+
+# COOKIE=$(mcookie); grep -v V_GREP_ME $0 > /dev/shm/runme-$COOKIE.sh ; sleep 1; exec bash /dev/shm/runme-$COOKIE.sh
+
+set -xe
+umask 022
+
+PKG=openjdk
+VERSION=8u171
+BUILD=0
+PREFIX=/pkg/$PKG-$VERSION-$BUILD
+# PREFIX=/dev/shm/pkg/$PKG-$VERSION-$BUILD
+
+ICEDTEA=icedtea-3.8.0
+ICEDTEA_VER=$(echo $ICEDTEA | cut -f2 -d-)
+
+# the build has its own opinion of parallel builds, high counts seem to be instable:
+PARALLELJOBS=${PARALLELJOBS:-4}
+
+SOURCES=(http://icedtea.classpath.org/download/source/icedtea-$ICEDTEA_VER.tar.xz \
+         http://icedtea.classpath.org/download/drops/icedtea8/$ICEDTEA_VER/openjdk.tar.xz \
+         http://icedtea.classpath.org/download/drops/icedtea8/$ICEDTEA_VER/corba.tar.xz \
+         http://icedtea.classpath.org/download/drops/icedtea8/$ICEDTEA_VER/jaxp.tar.xz \
+         http://icedtea.classpath.org/download/drops/icedtea8/$ICEDTEA_VER/jaxws.tar.xz \
+         http://icedtea.classpath.org/download/drops/icedtea8/$ICEDTEA_VER/jdk.tar.xz \
+         http://icedtea.classpath.org/download/drops/icedtea8/$ICEDTEA_VER/langtools.tar.xz \
+         http://icedtea.classpath.org/download/drops/icedtea8/$ICEDTEA_VER/nashorn.tar.xz \
+         http://icedtea.classpath.org/download/drops/icedtea8/$ICEDTEA_VER/hotspot.tar.xz)
+
+MD5SUMS=(e6a2a693291296a8e4b3cc76499b047e \
+         d532e0e7d893c6f3f427d571304fa6b8 \
+         083df5866e8434786bd62c5d26cf4b1a \
+         4859c3d3f6c8b6f1b3d92f316089b6a6 \
+         3f811761f995c7056ab2ab516dd2870f \
+         7e820fa93b44bc3a214313e0354da026 \
+         22df0b6af90e722e5cc802a5915f8385 \
+         e7f0b4ca8f2b897c8f4225d4fe3291fb \
+         c0017c13ea1c5fc8026d9f2b2bed4a11)
+
+COUNT_1=$(( ${#SOURCES[@]} - 1 ))
+
+function fetch_preprocess() {
+  local url=$1
+  local md5=$2
+  local opt_unpack=$3
+  local tar=$(echo $url | rev | cut -f1 -d/ | rev)
+  local dir=$(echo $tar | rev | cut -f3- -d. | rev)
+
+  (
+    cd $BUILDDIR
+    echo "$md5  $tar" > $tar.md5
+    test -e $tar || wget $url 
+    md5sum -c $tar.md5
+    test -n 'XWIPE' && rm -rf ./$dir
+    if test -n "$opt_unpack"; then
+      test -d $dir || tar xf $tar
+    fi
+  )
+}
+
+BUILD_TMPDIR=/dev/shm/$PKG-$VERSION-$BUILD.build.tmp
+test -d $BUILD_TMPDIR && rm -rf $BUILD_TMPDIR
+mkdir -p $BUILD_TMPDIR/home
+export TMPDIR=$BUILD_TMPDIR
+export HOME=$BUILD_TMPDIR/home
+
+mkdir -p $PREFIX
+cat >$PREFIX/profile <<-EOF
+	PATH=$PREFIX/bin:\$PATH
+EOF
+
+source $PREFIX/profile
+
+BOOT_JAVA=/pkg/openjdk-7u181-0
+source $BOOT_JAVA/profile
+
+BUILDDIR=$PREFIX/build
+mkdir -p $BUILDDIR
+cd $BUILDDIR
+
+fetch_preprocess ${SOURCES[0]} ${MD5SUMS[0]} 'yes'
+for X in $(seq 1 $COUNT_1); do
+  fetch_preprocess ${SOURCES[$X]} ${MD5SUMS[$X]}
+done
+
+# recent cacerts taken from CentOS package, so Red Hat is at least of some use ...
+(
+  CACERTS_URL=http://mirror.centos.org/centos/6/os/x86_64/Packages
+  RPM=ca-certificates-2018.2.22-65.1.el6.noarch.rpm
+  mkdir -p $BUILDDIR/tmp-certificates
+  cd $BUILDDIR/tmp-certificates
+  test -e $RPM || wget $CACERTS_URL/$RPM
+  test -d ./etc || rpm2cpio $RPM | cpio -imVd
+  cp etc/pki/java/cacerts $BUILDDIR
+)
+
+mkdir -p icedtea-build
+cd icedtea-build
+
+JAVA_HOME=${BOOT_JAVA} PATH=${BOOT_JAVA}/bin:$PATH \
+../$ICEDTEA/configure \
+    --with-jdk-home=${BOOT_JAVA} \
+    --disable-system-kerberos \
+    --disable-system-pcsc \
+    --disable-system-sctp \
+    --with-cacerts-file="$BUILDDIR/cacerts" \
+    --with-openjdk-src-zip="$BUILDDIR/openjdk.tar.xz" \
+    --with-corba-src-zip="$BUILDDIR/corba.tar.xz" \
+    --with-jaxp-src-zip="$BUILDDIR/jaxp.tar.xz" \
+    --with-jaxws-src-zip="$BUILDDIR/jaxws.tar.xz" \
+    --with-jdk-src-zip="$BUILDDIR/jdk.tar.xz" \
+    --with-langtools-src-zip="$BUILDDIR/langtools.tar.xz" \
+    --with-nashorn-src-zip="$BUILDDIR/nashorn.tar.xz" \
+    --with-hotspot-src-zip="$BUILDDIR/hotspot.tar.xz" \
+    --disable-docs \
+    --with-parallel-jobs=$PARALLELJOBS \
+    --disable-downloading
+
+# ALT_UNIXCOMMAND_PATH is needed, otherwise make fails due to 'missing' /bin/touch & /bin/cpio
+# ... make/common/shared/Defs-linux.gmk
+# UNIXCOMMAND_PATH: path to where the most common Unix commands are.
+#  NOTE: Must end with / so that it could be empty, allowing PATH usage.
+#
+# From time to time the build fails (1 outof 5), if so, start over.
+ALT_UNIXCOMMAND_PATH=/usr/bin/ JAVA_HOME=${BOOT_JAVA} PATH=${BOOT_JAVA}/bin:$PATH LOG=trace \
+make
+
+# install
+cp -a $BUILDDIR/icedtea-build/openjdk.build/images/j2sdk-image/* $PREFIX
+
+# exit 1 # inhibit closing
+exit