diff --git a/src/CIO/Systems/Admin-RandD/EngWorkstationBuildGuide.md b/src/CIO/Systems/Admin-RandD/EngWorkstationBuildGuide.md
index a4639f9..f338f6b 100644
--- a/src/CIO/Systems/Admin-RandD/EngWorkstationBuildGuide.md
+++ b/src/CIO/Systems/Admin-RandD/EngWorkstationBuildGuide.md
@@ -293,7 +293,7 @@ octave nodejs gpx2shp libreoffice calligra netbeans sigrok \
nodejs audacity wireshark nmap tcpdump zenmap etherape ghostscript \
geda ngspice graphicsmagick codeblocks scilab calibre paraview \
gnuradio build-essential libimobiledevice-utils libimobiledevice-dev \
-libgpod-dev python3-numpy python3-pandas python3-matplotlib \
+libgpod-dev python3-numpy python3-pandas python3-matplotlib bluez-firmware \
curl git make binutils bison gcc build-essential openjdk-11-jre-headless \
debootstrap cutecom minicom ser2net conman xsane gocr tesseract-ocr \
fonts-powerline build-essential zlib1g zlib1g-dev libxml2 libxml2-dev \
@@ -302,8 +302,8 @@ libyaml-dev openssl autoconf libtool ncurses-dev bison curl wget postgresql \
postgresql-contrib libpq-dev libapr1 libaprutil1 libsvn1 libpcap-dev ruby-dev \
openvas git-core postgresql curl nmap gem libsqlite3-dev cmake ninja-build libopenscap-dev \
qt5-default libqt5widgets5 libqt5widgets5 libqwt-headers libqt5xmlpatterns5-dev asciidoc \
-lmms virt-manager gqrx-sdr multimon-ng rtl-sdr fldigi grads cdo zygrib zygrib-maps \
-openwebrx xscreensaver
+lmms virt-manager gqrx-sdr multimon-ng rtl-sdr fldigi grads cdo zygrib zygrib-maps evince \
+openwebrx xscreensaver blueman bluetooth pulseaudio-module-bluetooth blueman bluewho
```
#### General packages for the modern knowledge worker who is tech/security savvy
diff --git a/src/CTO/team-sweng/crossCompiler-avr.md b/src/CTO/team-sweng/crossCompiler-avr.md
new file mode 100644
index 0000000..f8ab87a
--- /dev/null
+++ b/src/CTO/team-sweng/crossCompiler-avr.md
@@ -0,0 +1,4 @@
+
+CNW 05/27/2021 at 11:19 am
+
+https://github.com/arduino/toolchain-avr
\ No newline at end of file
diff --git a/src/CTO/team-sweng/crossCompiler-m0.md b/src/CTO/team-sweng/crossCompiler-m0.md
new file mode 100644
index 0000000..3889ded
--- /dev/null
+++ b/src/CTO/team-sweng/crossCompiler-m0.md
@@ -0,0 +1,129 @@
+
+# Cross Compiler Notes - cotextm0
+
+Begin active work (other than git clone and such ) at 18:09 on 05/28/2021
+
+Quick look at bash history (to document git clones)
+
+738 02/19/2021 20:56:24 git clone --depth=1 https://github.com/raspberrypi/linux
+874 03/02/2021 21:04:48 git clone git://sourceware.org/git/newlib-cygwin.git
+876 03/02/2021 21:03:33 git clone git://sourceware.org/git/binutils-gdb.git
+897 03/02/2021 20:52:16 git clone git://gcc.gnu.org/git/gcc.git
+914 03/02/2021 21:02:45 git clone https://github.com/crosstool-ng/crosstool-ng.git
+1099 03/07/2021 15:22:03 git clone https://github.com/librenms/librenms-agent.git
+1497 05/28/2021 13:58:59 git clone git://gcc.gnu.org/git/gcc.git
+1513 05/28/2021 18:08:05 history |grep git|grep clone
+
+So this has been on again/off again for about two months. Glad to be wrapping it up.
+
+Attempting to run the build script (./build-prerequisites.sh) gives us an error:
+
+```console
++2021-05-28:18:13:57 (./build-prerequisites.sh:132): echo Task '[I-0]' /x86_64-linux-gnu/zlib/
+Task [I-0] /x86_64-linux-gnu/zlib/
++2021-05-28:18:13:57 (./build-prerequisites.sh:133): rm -rf /subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/build-native/zlib
++2021-05-28:18:13:57 (./build-prerequisites.sh:134): copy_dir_clean /subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/src/zlib-1.2.8 /subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/build-native/zlib
++2021-05-28:18:13:57 (/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/build-common.sh:50): copy_dir_clean(): set +u
++2021-05-28:18:13:57 (/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/build-common.sh:51): copy_dir_clean(): mkdir -p /subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/build-native/zlib
++2021-05-28:18:13:57 (/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/build-common.sh:52): copy_dir_clean(): cd /subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/src/zlib-1.2.8
+/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/build-common.sh: line 52: cd: /subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/src/zlib-1.2.8: No such file or directory
++2021-05-28:18:13:57 (/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/build-common.sh:56): copy_dir_clean(): cd /subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/build-native/zlib
++2021-05-28:18:13:57 (/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major/build-common.sh:56): copy_dir_clean(): tar xf -
+tar: This does not look like a tar archive
+tar: Exiting with failure status due to previous errors
+root@buildbox:/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major# ls build-native/
+zlib
+root@buildbox:/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major# ls build-native/
+.stage zlib/
+root@buildbox:/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major# ls build-native/zlib/
+```
+
+Which is expected as zlib isn't downloaded, though it arguably should be by install-sources.sh which utilizes build-common.sh which is where you find the
+actual download URLs. Light edit I did, was changing URLs from ftp to http. Between release.txt and the How-to-build-toolchain.pdf I got the following results:
+
+```console
+root@buildbox:/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major# ls src/
+binutils-gdb gcc gmp-6.1.0.tar.bz2 isl-0.18.tar.xz mpc-1.0.3.tar.gz mpfr-3.1.4.tar.bz2 newlib-cygwin
+root@buildbox:/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major#
+```
+
+
+Since this was written for ubuntu 14.04 , i'm guessing URLs are out of date.... so...
+
+```
+GMP_URL=https://gmplib.org/download/gmp/$GMP_PACK
+MPFR_URL=http://www.mpfr.org/$MPFR/$MPFR_PACK
+MPC_URL=http://ftp.gnu.org/gnu/mpc/$MPC_PACK
+ISL_URL=http://isl.gforge.inria.fr/$ISL_PACK
+EXPAT_URL=https://downloads.sourceforge.net/project/expat/expat/$EXPAT_VER/$EXPAT_PACK
+LIBELF_URL=https://fossies.org/linux/misc/old/$LIBELF_PACK
+LIBICONV_URL=https://ftp.gnu.org/pub/gnu/libiconv/$LIBICONV_PACK
+ZLIB_URL=http://www.zlib.net/fossils/$ZLIB_PACK
+ENV_VAR_UPDATE_URL=http://nsis.sourceforge.net/mediawiki/images/a/ad/$ENV_VAR_UPDATE_PACK
+PYTHON_WIN_URL=https://www.python.org/ftp/python/$PYTHON_WIN_VER/$PYTHON_WIN_PACK
+BUGURL="https://developer.arm.com/open-source/gnu-toolchain/gnu-rm"
+
+root@buildbox:/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major# grep PACK build-common.sh
+PACKAGEDIR=$ROOT/pkg
+GMP_PACK=$GMP.tar.bz2
+MPFR_PACK=$MPFR.tar.bz2
+MPC_PACK=$MPC.tar.gz
+ISL_PACK=$ISL.tar.xz
+EXPAT_PACK=$EXPAT.tar.bz2
+LIBELF_PACK=$LIBELF.tar.gz
+LIBICONV_PACK=$LIBICONV.tar.gz
+ZLIB_PACK=$ZLIB.tar.gz
+ENV_VAR_UPDATE_PACK=$ENV_VAR_UPDATE.7z
+PYTHON_WIN_PACK=$PYTHON_WIN.msi
+GMP_URL=https://gmplib.org/download/gmp/$GMP_PACK
+MPFR_URL=http://www.mpfr.org/$MPFR/$MPFR_PACK
+MPC_URL=http://ftp.gnu.org/gnu/mpc/$MPC_PACK
+ISL_URL=http://isl.gforge.inria.fr/$ISL_PACK
+EXPAT_URL=https://downloads.sourceforge.net/project/expat/expat/$EXPAT_VER/$EXPAT_PACK
+LIBELF_URL=https://fossies.org/linux/misc/old/$LIBELF_PACK
+LIBICONV_URL=https://ftp.gnu.org/pub/gnu/libiconv/$LIBICONV_PACK
+ZLIB_URL=http://www.zlib.net/fossils/$ZLIB_PACK
+ENV_VAR_UPDATE_URL=http://nsis.sourceforge.net/mediawiki/images/a/ad/$ENV_VAR_UPDATE_PACK
+PYTHON_WIN_URL=https://www.python.org/ftp/python/$PYTHON_WIN_VER/$PYTHON_WIN_PACK
+PACKAGE_NAME_SUFFIX="${host_arch}-linux"
+PACKAGE_NAME_SUFFIX=mac-$(sw_vers -productVersion)
+PACKAGE_NAME=gcc-$TARGET-$GCC_VER_NAME-$RELEASEVER
+PACKAGE_NAME_NATIVE=$PACKAGE_NAME-$PACKAGE_NAME_SUFFIX
+PACKAGE_NAME_MINGW=$PACKAGE_NAME-win32
+INSTALL_PACKAGE_NAME=gcc-$TARGET-$GCC_VER_NAME-$RELEASEVER
+
+root@buildbox:/subo/Tooling/src/team-sweng/cross-compile/arduino-m0/gcc-arm-none-eabi-10-2020-q4-major# grep VER build-common.sh
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+WORKSPACE | SRC_VERSION)
+GMP_VER=6.1.0
+MPFR_VER=3.1.4
+MPC_VER=1.0.3
+ISL_VER=0.18
+EXPAT_VER=2.1.1
+LIBELF_VER=0.8.13
+LIBICONV_VER=1.15
+ZLIB_VER=1.2.8
+PYTHON_WIN_VER=2.7.7
+GMP=gmp-$GMP_VER
+MPFR=mpfr-$MPFR_VER
+MPC=mpc-$MPC_VER
+ISL=isl-$ISL_VER
+EXPAT=expat-$EXPAT_VER
+LIBELF=libelf-$LIBELF_VER
+LIBICONV=libiconv-$LIBICONV_VER
+ZLIB=zlib-$ZLIB_VER
+PYTHON_WIN=python-$PYTHON_WIN_VER
+EXPAT_URL=https://downloads.sourceforge.net/project/expat/expat/$EXPAT_VER/$EXPAT_PACK
+PYTHON_WIN_URL=https://www.python.org/ftp/python/$PYTHON_WIN_VER/$PYTHON_WIN_PACK
+RELEASEVER=${release_year}-q1-update
+RELEASEVER=${release_year}-q2-preview
+RELEASEVER=${release_year}-q3-update
+RELEASEVER=${release_year}-q4-major
+GCC_VER=`cat $SRCDIR/$GCC/gcc/BASE-VER`
+GCC_VER_NAME=`echo $GCC_VER | cut -d'.' -f1`
+GCC_VER_SHORT=$GCC_VER_NAME
+PKGVERSION="GNU Arm Embedded Toolchain $GCC_VER_NAME-$RELEASEVER"
+PACKAGE_NAME=gcc-$TARGET-$GCC_VER_NAME-$RELEASEVER
+INSTALL_PACKAGE_NAME=gcc-$TARGET-$GCC_VER_NAME-$RELEASEVER
+APPNAME="$PKGVERSION $GCC_VER_SHORT $release_year"
+```
\ No newline at end of file
diff --git a/src/CTO/team-sweng/crossCompiler-rpi.md b/src/CTO/team-sweng/crossCompiler-rpi.md
new file mode 100644
index 0000000..d10cedc
--- /dev/null
+++ b/src/CTO/team-sweng/crossCompiler-rpi.md
@@ -0,0 +1,38 @@
+CNW
+
+05/27/2021 at 10:49
+
+
+
+git clone
+killed that
+
+found a better option (uses docker so it's nicely contained)
+
+
+
+realized that might be (only for) rpi0 dug into source material and found
+
+
+
+Light modifications to the instructions (--werror and path adjustments):
+
+```console
+../glibc-2.28/configure --prefix=/subo/Tooling/bin/team-sweng/cross-compile/rpi/arm-linux-gnueabihf --build=$MACHTYPE --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv6 --with-fpu=vfp --with-float=hard --with-headers=/subo/Tooling/bin/team-sweng/cross-compile/rpi/arm-linux-gnueabihf/include --disable-multilib libc_cv_forced_unwind=yes --disable-werror
+install csu/crt1.o csu/crti.o csu/crtn.o /subo/Tooling/bin/team-sweng/cross-compile/rpi/arm-linux-gnueabihf/lib
+arm-linux-gnueabihf-gcc -nostdlib -nostartfiles -shared -x c /dev/null -o /subo/Tooling/bin/team-sweng/cross-compile/rpi/arm-linux-gnueabihf/lib/libc.so
+touch /subo/Tooling/bin/team-sweng/cross-compile/rpi/arm-linux-gnueabihf/include/gnu/stubs.h
+```
+
+Glibc build well underway as of 17:58 on 05/28/2021
+
+Executable built on buildbox , scp to my pi, run. Patient closed at 18:27 on 05/28/2021
+
+```console
+
+root@buildbox:~# arm-linux-gnueabihf-gcc hello-pi.c -o hello-pi
+root@buildbox:~# file hello-pi
+hello-pi: ELF 32-bit LSB shared object, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, BuildID[sha1]=ee4a21a234906299467b7e0ec735d400497c5ad8, for GNU/Linux 3.2.0, not stripped
+> ./hello-pi
+Hello rpi cross!% ~ 18:26:12
+```
\ No newline at end of file