Camotics for Raspberry Pi

Build notes for camotics on a raspberry pi 4, 4gb ram, running raspbian "Buster" . To run, download the AppImage and install using

cd ~/Downloads
chmod +x CAMotics-armhf.AppImage
./CAMotics-armhf.AppImage

CAMotics simulates g-code. CAMotics can be used to see how a 3d printer would print a workpiece.

Build Notes

Prerequisites

Build on a clean 2019-09-26-raspbian-buster-lite. This avoids having multiple libQt versions during compilation.

Install the prerequisites

sudo apt-get update

Install Qt5.12 LTS with OpenGL:

wget https://github.com/koendv/qt5-opengl-raspberrypi/releases/download/v5.12.5-1/qt5-opengl-dev_5.12.5_armhf.deb
sudo apt install ./qt5-opengl-dev_5.12.5_armhf.deb

For cbang:

apt-get install scons build-essential libssl-dev binutils-dev libiberty-dev libmariadb-dev-compat libleveldb-dev libsnappy-dev git
apt-get install libbz2-dev libyaml-dev libevent-dev libre2-dev 

Install libnode-dev to pull in libv8-dev and libplatform.h:

apt-get install libnode-dev 

For camotics:

apt-get install python-six libdxflib-dev libglu1-mesa-dev

Build cbang

git clone https://github.com/CauldronDevelopmentLLC/cbang
export TARGET_ARCH=arm-linux-gnueabihf
scons -C cbang

Check scons will compile cbang with v8, not ChakraCore:

Checking for C++ header file ChakraCore.h... no
Need C++ header ChakraCore.h(cached) error: no result
Checking for C++ header file v8.h... yes
Checking for C++ header file libplatform/libplatform.h... yes
Checking for C library v8... yes

Build camotics

Tell camotics where cbang is and compile:

export CBANG_HOME=$PWD/cbang
export QT5DIR=/usr/lib/qt5.12/
export PATH=$QT5DIR/bin:$PATH
export PKG_CONFIG_PATH=/usr/lib/qt5.12/lib/pkgconfig/
git clone https://github.com/CauldronDevelopmentLLC/CAMotics
cd CAMotics
scons

Create AppImage

Type:

rm -rf build/camotics-deb/
scons package

This creates the debian package camotics_1.2.1_armhf.deb. To continue creating the AppImage, first remove the Debian package info:

cd build/camotics-deb/
export APPIMAGE_DIR=$PWD
rm -rf DEBIAN/

Add desktop icon information:

cp usr/share/applications/CAMotics.desktop .
cp usr/share/pixmaps/camotics.png $APPIMAGE_DIR
cat <<EOD  >> CAMotics.desktop
Version=1.0
X-AppImage-Version=1.2.1
EOD

Copy Qt translations:

(cd /; tar cvhf - usr/lib/qt5.12/translations/) | (cd $APPIMAGE_DIR; tar xvpf -)

Copy library dependencies to AppImage. First make a list of all shared libraries used, then copy these libraries to the AppImage directory.

cd $APPIMAGE_DIR/..
wget https://raw.githubusercontent.com/koendv/camotics-raspberrypi/master/appimagelibs-qt-buster
chmod +x ./appimagelibs-qt-buster 
./appimagelibs-qt-buster $APPIMAGE_DIR

Copy AppImage files. From https://github.com/AppImage/AppImageKit/releases/ download AppRun-armhf and appimagetool-armhf.AppImage.

cp ~/Downloads/AppRun-armhf $APPIMAGE_DIR/AppRun
chmod a+x $APPIMAGE_DIR/AppRun

Copy AppStream metadata.

mkdir -p $APPIMAGE_DIR/usr/share/metainfo/
cp ../CAMotics.appdata.xml $APPIMAGE_DIR/usr/share/metainfo/CAMotics.appdata.xml

Create AppImage:

cd $APPIMAGE_DIR/..
~/Downloads/appimagetool-armhf.AppImage $APPIMAGE_DIR

This produces the file CAMotics-armhf.AppImage. Test AppImage:

./CAMotics-armhf.AppImage

Run the AppImage on a clean install of the operating system to check all dependencies have been caught.

not truncated.