diff --git a/brlcad-7.28.0-0.build.sh b/brlcad-7.28.0-0.build.sh
new file mode 100755
index 0000000..09acf2e
--- /dev/null
+++ b/brlcad-7.28.0-0.build.sh
@@ -0,0 +1,85 @@
+#! /bin/bash
+
+set -xe
+
+PKG=brlcad
+VERSION=7.28.0
+SRCURL=https://sourceforge.net/projects/brlcad/files/BRL-CAD%20Source/$VERSION/$PKG-$VERSION.tar.gz
+SRC=$PKG-$VERSION.tar.gz
+
+BUILD=0
+
+PREFIX=/pkg/$PKG-$VERSION-$BUILD
+# PREFIX=/dev/shm/pkg/$PKG-$VERSION-$BUILD
+
+mkdir -p $PREFIX
+cat >$PREFIX/profile <<-EOF
+	PATH=$PREFIX/bin:\$PATH
+EOF
+
+source $PREFIX/profile
+
+mkdir -p $PREFIX/build
+cd $PREFIX/build
+
+test -e $PKG-$VERSION.tar.gz || wget --no-verbose $SRCURL
+test -n "$XWIPE" && rm -rf $PKG-$VERSION
+test -d $PKG-$VERSION || tar -xf $PKG-$VERSION.tar.gz
+
+
+mkdir -p $PKG-$VERSION/build
+cd $PKG-$VERSION/build
+
+
+# The slackbuild was again a valuable source to get this thing build
+# https://slackbuilds.org/slackbuilds/14.2/graphics/brlcad/brlcad.SlackBuild
+# 
+# lessons learned:
+#   - Warnings need to be turened off (at least for gcc5 builds).
+#   - gcc7 will throw weird errors from the depths of the cstdlib (include_next, OMG!):
+# 
+#      In file included from /dev/shm/brlcad-7.28.0/build/include/clipper.hpp:40:0,
+#                       from /dev/shm/brlcad-7.28.0/src/libged/polyclip.cpp:31:
+#      /usr/include/c++/7.3.0/cstdlib:75:15: fatal error: stdlib.h: No such file or directory
+#       #include_next <stdlib.h>
+#                     ^~~~~~~~~~
+# 
+#   - BRLCAD_ENABLE_RUNTIME_DEBUG is strongly encouraged
+# 
+
+source /pkg/gcc-5.5.0-1/profile
+MXCFLAGS="-O2 -fPIC"
+
+cmake \
+    -DCMAKE_COLOR_MAKEFILE=OFF \
+    -DCMAKE_VERBOSE_MAKEFILE=ON \
+    -DCMAKE_INSTALL_PREFIX=$PREFIX \
+    -DCMAKE_C_FLAGS:STRING="$MXCFLAGS" \
+    -DCMAKE_CXX_FLAGS:STRING="$MXCFLAGS" \
+    -DBRLCAD_BUNDLED_LIBS=AUTO \
+    -DBRLCAD_ENABLE_RUNTIME_DEBUG=ON \
+    -DBRLCAD_FLAGS_DEBUG=OFF \
+    -DBRLCAD_ENABLE_STRICT=OFF \
+    -DBRLCAD_ENABLE_COMPILER_WARNINGS=OFF\
+    -DBRLCAD_FLAGS_OPTIMIZATION=ON \
+    -DBRLCAD_ENABLE_OPENGL=ON \
+    -DBRLCAD_TCL=BUNDLED \
+    -DBRLCAD_TK=BUNDLED \
+    -DBRLCAD_ITCL=BUNDLED \
+    -DBRLCAD_ITK=BUNDLED \
+    -DBRLCAD_ENABLE_QT=OFF \
+    -DBRLCAD_ENABLE_OSG=OFF \
+    -DBRLCAD_ENABLE_RTGL=OFF \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DBRLCAD_ENABLE_EXTRADOCS=ON \
+    -DBRLCAD_INSTALL_EXAMPLE_GEOMETRY=ON \
+    ..
+
+NUMJOBS=$(nproc)
+if test $NUMJOBS -gt 96 ; then NUMJOBS=96; fi
+
+nice -12 make -j $NUMJOBS
+make install
+
+exit
+