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README.md Update README with details for Mac build Jun 20, 2017


IMPORTANT: The definitive location for Aleph Object's Cura source code is here: https://code.alephobjects.com/diffusion/CURA

= Cura =

This is the development version of Cura for LulzBot 3D Printers by Aleph Objects, Inc. It is available here: https://code.alephobjects.com/diffusion/CURA

This branch is based on the upstream version maintained by daid and Ultimaker: https://github.com/daid/Cura

= Development =

Cura is developed in Python with a C++ engine. The part you are looking at right now is the Python GUI. The C++ engine is responsible for generating the actual toolpath. For development of the engine check out https://code.alephobjects.com/diffusion/CE/

Both MacOS and Linux require some extra instructions for development, as you need to prepare an environment. Look below at the proper section to see what is needed.

There are two options to run cura on your system. Package (Build/install/run) or run directly from the source code.

= Running from Source =

Recommended for alpha testers and software developers contributing patches or pull requests. Requires having git installed.

== Get the source code ==

git clone https://code.alephobjects.com/diffusion/CURA/cura.git
cd cura #Enter the Cura source code directory

== Install dependencies ==

Run the sudo apt-get install ... or sudo yum install ... line from the packaging section below, this is specific to your platform.

== Setup CuraEngine ==

On some platforms the build script can be used to do this automatically like so:

./package.sh <platform name here>

Here is the manual process for platforms not mentioned in the build script:

git clone https://code.alephobjects.com/diffusion/CE/curaengine.git #get a copy of the source code
cd CuraEngine #Enter the newly created directory
make #Compile CuraEngine

== Link CuraEngine ==

For *nix OSes you can create a symbolic link. Put this file one directory above where you cloned cura.

cd .. #Move up a directory
ln -s ./cura/CuraEngine/build/CuraEngine CuraEngine #Actually create the link

== Add group access ==

For some *nix OSes you will need to add one or more of these groups to connect to your printer via USB.

sudo usermod -a -G tty $USER
sudo usermod -a -G dialout $USER
sudo usermod -a -G serial $USER

== Run ==

./dev-cura #Launch the GUI application

= Packaging =

Recommended for organizations that are building their own version of Cura.

Cura development comes with a script "package.sh", this script has been designed to run under *nix OSes (Linux, MacOS, FreeBSD). For Windows the package.sh script can be run from bash using git. The "package.sh" script generates a final release package. You should not need it during development, unless you are changing the release process. If you want to distribute your own version of Cura, then the package.sh script will allow you to do that.

== Fedora ==

Fedora builds Cura by using mock, thereby enabling it to build RPMs for every distribution that mock has a configuration file for. In pratice this means that Fedora can build RPMs for several versions of Fedora, CentOS and RHEL. Cura can be built under a regular user account, there is no need to have root privileges. In fact, having root privileges is very much discouraged. However, the user account under which the build is performed needs to be a member of the 'mock' group. This is accomplished as follows:

sudo usermod -a -G mock "$(whoami)"

To install the software that is required to build Cura, run the following commands:

sudo yum install -y git rpmdevtools rpm-build mock arduino

# Ensure that the Arduino tools can be found by the build
sudo mkdir -p /usr/share/arduino/hardware/tools/avr
sudo ln -sf /usr/bin /usr/share/arduino/hardware/tools/avr/bin

To build and install Cura, run the following commands:

# Get the Cura software, only required once
git clone https://code.alephobjects.com/diffusion/CURA/cura.git

# Build for the current system
cd cura
./package.sh fedora

# Install on the current system
sudo yum localinstall -y scripts/linux/fedora/RPMS/Cura-*.rpm

Examples of building other configurations:

# Build for Fedora rawhide x86-64 and i386
./package.sh fedora fedora-rawhide-x86_64.cfg fedora-rawhide-i386.cfg

# Since only the basename of the mock configurations is used, this also works:
./package.sh fedora /etc/mock/fedora-21-x86_64.cfg /etc/mock/fedora-rawhide-i386.cfg

== Debian and Ubuntu Linux ==

To build and install Cura, run the following commands:

git clone https://code.alephobjects.com/diffusion/CURA/cura.git

sudo apt-get install python-opengl python-numpy python-serial python-setuptools python-wxgtk3.0 curl python-power
# Run this also if you're building for 32bit Debian
sudo apt-get install gcc-multilib g++-multilib

cd cura

./package.sh debian_amd64          # or debian_i386 for 32bit
# this will prompt for your root password to run dpkg-deb

sudo dpkg -i ./scripts/linux/cura*.deb

== FreeBSD ==

On FreeBSD simply use the Port Tree (cd /usr/ports/cad/cura) to create (make package) and install (make install) the package as root. Port will check for all necessary dependencies. You can also use the provided binary package with pkg install Cura. If you want to create an archive for local use the package.sh freebsd script (as an ordinary user) will give you a tarball with the program.

== Mac OS X ==

The following section describes how to prepare working environment for developing and packaing for Mac OS X. The working environment consist of build of Python, build of wxPython and all required Python packages.

We assume you already have Apple hardware with 64bit processor and you are familiar with tools like virtualenv, virtualenvwrapper and pip. Also ensure you have modern compiler installed.

##Install Python You'll need non-system, framework-based, universal with deployment target set to 10.6 build of Python 2.7

non-system: Output of python -c "import sys; print sys.prefix" should not start with "/System/Library/Frameworks/Python.framework/".

framework-based: Output of python -c "import distutils.sysconfig as c; print(c.get_config_var('PYTHONFRAMEWORK'))" should be non-empty string. E.g. Python.

universal: Output of lipo -info `which python` should include both i386 and x86_64. E.g "Architectures in the fat file: /usr/local/bin/python are: i386 x86_64".

deployment target set to 10.6: Output of otool -l `which python` should contain "cmd LC_VERSION_MIN_MACOSX ... version 10.6".

The easiest way to install it is via Homebrew using the formula from Cura's repo: brew install --build-bottle --fresh cura/scripts/darwin/python.rb --universal Note if you already have Python installed via Homebrew, you have to uninstall it first.

You can also install official build.

##Configure Virtualenv Create new virtualenv. If you have virtualenvwrapper installed: mkvirtualenv Cura

wxPython cannot be installed via pip, we have to build it from source by specifing prefix to our virtualenv.

Assuming you have virtualenv at ~/.virtualenvs/Cura/ and wxPython sources at ~/Downloads/wxPython-src-

  1. cd into ~/Downloads/wxPython-src- and configure the sources:

     ./configure \
     CFLAGS='-msse2 -mno-sse3 -mno-sse4' \
     CXXFLAGS='-msse2 -mno-sse3 -mno-sse4' \
     --disable-debug \
     --enable-clipboard \
     --enable-display \
     --enable-dnd \
     --enable-monolithic \
     --enable-optimise \
     --enable-std_string \
     --enable-svg \
     --enable-unicode \
     --enable-universal_binary=i386,x86_64 \
     --enable-webkit \
     --prefix=$HOME/.virtualenvs/Cura/ \
     --with-expat \
     --with-libjpeg=builtin \
     --with-libpng=builtin \
     --with-libtiff=builtin \
     --with-macosx-version-min=10.6 \
     --with-opengl \
     --with-osx_cocoa \
  2. make install Note to speedup the process I recommend you to enable multicore build by adding the -jcores flag: make -j4 install

  3. cd into ~/Downloads/wxPython-src-

  4. Build wxPython (Note python is the python of your virtualenv):

     python setup.py build_ext \
     BUILD_STC=1 \
     UNICODE=1 \
     WX_CONFIG=$HOME/.virtualenvs/Cura/bin/wx-config \
  5. Install wxPython (Note python is the python of your virtualenv):

     python setup.py install \
     --prefix=$HOME/.virtualenvs/Cura \
     BUILD_STC=1 \
     UNICODE=1 \
     WX_CONFIG=$HOME/.virtualenvs/Cura/bin/wx-config \
  6. Create file ~/.virtualenvs/Cura/bin/pythonw with the following content:

     ENV=`python -c "import sys; print sys.prefix"`
     PYTHON=`python -c "import sys; print sys.real_prefix"`/bin/python
     export PYTHONHOME=$ENV
     exec $PYTHON "$@"

At this point virtualenv is configured for wxPython development. Remember to use python for pacakging and pythonw to run app for debugging.

##Install Python Packages Required python packages are specified in requirements.txt and requirements_darwin.txt If you use virtualenv, installing requirements as easy as pip install -r requirements_darwin.txt

##Package Cura into application Ensure that virtualenv is activated, so python points to the python of your virtualenv (e.g. ~/.virtualenvs/Cura/bin/python).Use package.sh to build Cura: ./package.sh darwin

Note that application is only guaranteed to work on Mac OS X version used to build and higher, but may not support lower versions. E.g. Cura built on 10.8 will work on 10.8 and 10.7, but not on 10.6. In other hand, Cura built on 10.6 will work on 10.6, 10.7 and 10.8.

##Package Cura using package.sh scripts


  • Make sure you have installed homebrew (https://brew.sh/).
  • Make sure you have python2 installed

Then you can build Cura using the following command:

./package.sh darwin

You can tweak the build using the following ENV variables:

  • CURA_PREFIX_DIR (Defaults to /Users/buildbot) - home directory of Cura virtual env.
  • WX_PREFIX_DIR (Defaults to $CURA_PREFIX_DIR/cura-virtual) - wxPython prefix directory. This directory should contain $WX_PREFIX_DIR/bin/wx-config for the wx config.