Compiling FreeCAD on Ubuntu 16.04

Read my another post to compile FreeCAD on Arch:

Getting the source:

git clone free-cad-code

Getting the dependencies:

sudo apt install build-essential cmake python python-matplotlib libtool libcoin80-dev libsoqt4-dev libxerces-c-dev libboost-dev libboost-filesystem-dev libboost-regex-dev libboost-program-options-dev libboost-signals-dev libboost-thread-dev libboost-python-dev libqt4-dev libqt4-opengl-dev qt4-dev-tools python-dev python-pyside pyside-tools oce-draw libeigen3-dev libqtwebkit-dev libshiboken-dev libpyside-dev libode-dev swig libzipios++-dev libfreetype6 libfreetype6-dev liboce-foundation-dev liboce-modeling-dev liboce-ocaf-dev liboce-visualization-dev liboce-ocaf-lite-dev libsimage-dev checkinstall python-pivy python-qt4 doxygen libspnav-dev


Now first we’ll create a separate directory for storing our build files. This will be out-of-source build. Which means the source code directory will not get modified and there won’t be any issue with git.

mkdir build

cd build

cmake ../free-cad-code

Here free-cad-code is my source code directory.

While running cmake, I got an error:

make[2]: *** No rule to make target ‘/usr/lib/’, needed by ‘lib/’. Stop.

This was solved by creating a symlink from /usr/lib/x86_64-linux-gnu/ to /usr/lib/

sudo ln -s /usr/lib/x86_64-linux-gnu/ /usr/lib/

If the above cmake process worked successfully then proceed to the following or just analyze the error and install the missing dependencies. Now type:


to start the compilation.

To speed up the compilation, I did: make -j4 instead of make. It will make the full utilization of CPU and memory. Here 4 is the number of cores. You may find yours using command: nproc or simply run make -j$(nproc)

But wait, I got into a problem due to that. The C++ compiler ran out of memory while compilation. It threw an error:

c++: internal compiler error: Killed (program cc1plus)

Please submit a full bug report, with preprocessed source if appropriate.

See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.

It was due to the full memory utilization and compiler ran out of memory. I got help regarding this by one of the mentors (ickby) on #freecad irc channel.

Then I tried with make -j2 and it worked flawlessly.

Execute using the following command:




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