Since Rafi pushed 223bbc8bd50a34282ef02952392fd4321113f770 my Linux (Fedora 21) builds have been failing [1]. I've finally tracked it down to some problem with ccache-swig.
So if you have ccache installed (which is generally a good idea as it speeds up builds a lot) you need to avoid the ccache version of swig. If cmake is using the version of swig which doesn't work you will see that the swig found is in /usr/lib64/ccache/swig Do this either by using ccmake (or cmake-gui) to change SWIG_EXECUTABLE to /usr/bin/swig or by using -DSWIG_EXECUTABLE=/usr/bin/swig on the initial cmake line. I don't know if this information is also true for Debian/Ubuntu with ccache. Andrew [1] The errors look like this: [2/4] Swig source linking /home/andrew/Work/proton/bld/proton-c/bindings/python/cprotonPYTHON_wrap.c (cc) /home/andrew/Work/proton/src/proton-c/bindings/python/cproton.i:297: Error: Syntax error in input(1). ninja: build stopped: cannot make progress due to previous errors.
