diff --git a/gcc-10.1.0-0.build.sh b/gcc-10.1.0-0.build.sh
new file mode 100755
index 0000000..42b3315
--- /dev/null
+++ b/gcc-10.1.0-0.build.sh
@@ -0,0 +1,73 @@
+#! /bin/bash
+
+# Note: Depending on the value in /proc/sys/vm/overcommit_memory (0|2)
+#       results of make check differ, but neither one succeeds.
+
+PKG=gcc
+VERSION=10.1.0
+BUILD=0
+URL=http://ftp.gnu.org/gnu/gcc/gcc-${VERSION}/gcc-${VERSION}.tar.gz
+
+PREFIX=/pkg/$PKG-$VERSION-$BUILD
+if [ -n "$TESTING" ]; then PREFIX=/dev/shm/$PKG-$VERSION-$BUILD ; fi
+
+set -xe
+umask 022
+
+BUILD_TMPDIR=/dev/shm/$PKG-$VERSION-$BUILD.build.tmp
+test -d $BUILD_TMPDIR && ( chmod -R u+rwx $BUILD_TMPDIR || true ; rm -rf $BUILD_TMPDIR )
+mkdir -p $BUILD_TMPDIR/home
+export TMPDIR=$BUILD_TMPDIR
+export HOME=$BUILD_TMPDIR/home
+
+exec </dev/null
+
+mkdir -p $PREFIX
+cat >$PREFIX/profile <<-EOF
+	PATH=$PREFIX/bin:\$PATH
+	if [ -d $PREFIX/.compatlibs ]; then export LD_LIBRARY_PATH=$PREFIX/.compatlibs\${LD_LIBRARY_PATH:+:\$LD_LIBRARY_PATH} ; fi
+EOF
+. $PREFIX/profile
+
+export MAKEFLAGS="-j $(nproc)"
+
+BUILDDIR=$PREFIX/build
+
+mkdir -p $BUILDDIR
+cd $BUILDDIR
+
+test -e gcc-${VERSION}.tar.gz || wget --no-verbose $URL
+test -d gcc-$VERSION          || tar xvf gcc-${VERSION}.tar.gz
+cd gcc-$VERSION
+mkdir -p objdir
+cd objdir
+# Note on languages: go and lto are not part of the mpi default install,
+#                    here they are enabled just for testing/fun
+$BUILDDIR/gcc-$VERSION/configure \
+  --prefix=$PREFIX \
+  --enable-shared \
+  --enable-threads=posix \
+  --enable-__cxa_atexit \
+  --enable-clocale=gnu \
+  --enable-languages=c,fortran,c++,objc,obj-c++,go,lto \
+  --disable-multilib \
+  --with-system-zlib \
+  --with-diagnostics-color=auto-if-env
+
+make
+# /dev/shm/gcc-8.4.0-0/build/gcc-8.4.0/objdir/check.log
+make -k check 2>&1 | tee check.log
+make install
+
+cd $PREFIX
+mkdir -vp lib
+ln -sfv ${PREFIX}/bin/cpp lib/
+ln -sfv gcc bin/cc
+
+install -v -dm755 lib/bfd-plugins
+ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/$VERSION/liblto_plugin.so lib/bfd-plugins/
+
+# and dump these ...
+rm -v lib64/*-gdb.py
+
+exit
diff --git a/gcc-8.4.0-0.build.sh b/gcc-8.4.0-0.build.sh
new file mode 100755
index 0000000..7a5c77a
--- /dev/null
+++ b/gcc-8.4.0-0.build.sh
@@ -0,0 +1,73 @@
+#! /bin/bash
+
+# Note: Depending on the value in /proc/sys/vm/overcommit_memory (0|2)
+#       results of make check differ, but neither one succeeds.
+
+PKG=gcc
+VERSION=8.4.0
+BUILD=0
+URL=http://ftp.gnu.org/gnu/gcc/gcc-${VERSION}/gcc-${VERSION}.tar.gz
+
+PREFIX=/pkg/$PKG-$VERSION-$BUILD
+if [ -n "$TESTING" ]; then PREFIX=/dev/shm/$PKG-$VERSION-$BUILD ; fi
+
+set -xe
+umask 022
+
+BUILD_TMPDIR=/dev/shm/$PKG-$VERSION-$BUILD.build.tmp
+test -d $BUILD_TMPDIR && ( chmod -R u+rwx $BUILD_TMPDIR || true ; rm -rf $BUILD_TMPDIR )
+mkdir -p $BUILD_TMPDIR/home
+export TMPDIR=$BUILD_TMPDIR
+export HOME=$BUILD_TMPDIR/home
+
+exec </dev/null
+
+mkdir -p $PREFIX
+cat >$PREFIX/profile <<-EOF
+	PATH=$PREFIX/bin:\$PATH
+	if [ -d $PREFIX/.compatlibs ]; then export LD_LIBRARY_PATH=$PREFIX/.compatlibs\${LD_LIBRARY_PATH:+:\$LD_LIBRARY_PATH} ; fi
+EOF
+. $PREFIX/profile
+
+export MAKEFLAGS="-j $(nproc)"
+
+BUILDDIR=$PREFIX/build
+
+mkdir -p $BUILDDIR
+cd $BUILDDIR
+
+test -e gcc-${VERSION}.tar.gz || wget --no-verbose $URL
+test -d gcc-$VERSION          || tar xvf gcc-${VERSION}.tar.gz
+cd gcc-$VERSION
+mkdir -p objdir
+cd objdir
+# Note on languages: go and lto are not part of the mpi default install,
+#                    here they are enabled just for testing/fun
+$BUILDDIR/gcc-$VERSION/configure \
+  --prefix=$PREFIX \
+  --enable-shared \
+  --enable-threads=posix \
+  --enable-__cxa_atexit \
+  --enable-clocale=gnu \
+  --enable-languages=c,fortran,c++,objc,obj-c++,go,lto \
+  --disable-multilib \
+  --with-system-zlib \
+  --with-diagnostics-color=auto-if-env
+
+make
+# /dev/shm/gcc-8.4.0-0/build/gcc-8.4.0/objdir/check.log
+make -k check 2>&1 | tee check.log
+make install
+
+cd $PREFIX
+mkdir -vp lib
+ln -sfv ${PREFIX}/bin/cpp lib/
+ln -sfv gcc bin/cc
+
+install -v -dm755 lib/bfd-plugins
+ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/$VERSION/liblto_plugin.so lib/bfd-plugins/
+
+# and dump these ...
+rm -v lib64/*-gdb.py
+
+exit
diff --git a/gcc-9.3.0-0.build.sh b/gcc-9.3.0-0.build.sh
new file mode 100755
index 0000000..69dec69
--- /dev/null
+++ b/gcc-9.3.0-0.build.sh
@@ -0,0 +1,73 @@
+#! /bin/bash
+
+# Note: Depending on the value in /proc/sys/vm/overcommit_memory (0|2)
+#       results of make check differ, but neither one succeeds.
+
+PKG=gcc
+VERSION=9.3.0
+BUILD=0
+URL=http://ftp.gnu.org/gnu/gcc/gcc-${VERSION}/gcc-${VERSION}.tar.gz
+
+PREFIX=/pkg/$PKG-$VERSION-$BUILD
+if [ -n "$TESTING" ]; then PREFIX=/dev/shm/$PKG-$VERSION-$BUILD ; fi
+
+set -xe
+umask 022
+
+BUILD_TMPDIR=/dev/shm/$PKG-$VERSION-$BUILD.build.tmp
+test -d $BUILD_TMPDIR && ( chmod -R u+rwx $BUILD_TMPDIR || true ; rm -rf $BUILD_TMPDIR )
+mkdir -p $BUILD_TMPDIR/home
+export TMPDIR=$BUILD_TMPDIR
+export HOME=$BUILD_TMPDIR/home
+
+exec </dev/null
+
+mkdir -p $PREFIX
+cat >$PREFIX/profile <<-EOF
+	PATH=$PREFIX/bin:\$PATH
+	if [ -d $PREFIX/.compatlibs ]; then export LD_LIBRARY_PATH=$PREFIX/.compatlibs\${LD_LIBRARY_PATH:+:\$LD_LIBRARY_PATH} ; fi
+EOF
+. $PREFIX/profile
+
+export MAKEFLAGS="-j $(nproc)"
+
+BUILDDIR=$PREFIX/build
+
+mkdir -p $BUILDDIR
+cd $BUILDDIR
+
+test -e gcc-${VERSION}.tar.gz || wget --no-verbose $URL
+test -d gcc-$VERSION          || tar xvf gcc-${VERSION}.tar.gz
+cd gcc-$VERSION
+mkdir -p objdir
+cd objdir
+# Note on languages: go and lto are not part of the mpi default install,
+#                    here they are enabled just for testing/fun
+$BUILDDIR/gcc-$VERSION/configure \
+  --prefix=$PREFIX \
+  --enable-shared \
+  --enable-threads=posix \
+  --enable-__cxa_atexit \
+  --enable-clocale=gnu \
+  --enable-languages=c,fortran,c++,objc,obj-c++,go,lto \
+  --disable-multilib \
+  --with-system-zlib \
+  --with-diagnostics-color=auto-if-env
+
+make
+# /dev/shm/gcc-8.4.0-0/build/gcc-8.4.0/objdir/check.log
+make -k check 2>&1 | tee check.log
+make install
+
+cd $PREFIX
+mkdir -vp lib
+ln -sfv ${PREFIX}/bin/cpp lib/
+ln -sfv gcc bin/cc
+
+install -v -dm755 lib/bfd-plugins
+ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/$VERSION/liblto_plugin.so lib/bfd-plugins/
+
+# and dump these ...
+rm -v lib64/*-gdb.py
+
+exit