https://codereview.appspot.com/557580043/diff/551560043/configure.ac File configure.ac (right):
https://codereview.appspot.com/557580043/diff/551560043/configure.ac#newcode198 configure.ac:198: # they rename 'libguile.h' to 'libguile18.h'. Can you be more precise as to what distributions? Guile itself doesn't rename libguile.h, but just puts the headers for newer versions into a subdirectory. So whoever does it is probably playing some dark tricks. https://codereview.appspot.com/557580043/