Read my another post to compile FreeCAD on Arch: https://mandeep7.wordpress.com/2016/03/30/compiling-freecad-from-source-on-arch-linux/
Getting the source:
git clone https://github.com/FreeCAD/FreeCAD 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.
For example, if you have two directories: build and free-cad-code, then go to build directory and run:
Here free-cad-code is my source code directory.
While running cmake, I got an error:
make: *** No rule to make target ‘/usr/lib/libfreeimage.so’, needed by ‘lib/libSMDS.so’. Stop.
This was solved by creating a symlink from /usr/lib/x86_64-linux-gnu/libfreeimage.so to /usr/lib/libfreeimage.so
sudo ln -s /usr/lib/x86_64-linux-gnu/libfreeimage.so /usr/lib/libfreeimage.so
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.