The cvs-builds for the enlightenment and its libraries do not alaways install the doxygen generated documentation. The problem is that not all of the libraries in cvs have the executable flag set for the gendoc file. So the test [[ -x ./gendoc ]] sometimes fail (for example for the ewl), but documentation could be successfully generated. So the solution is simply to add the following lines: if [[ -e ./gendoc ]] && [[ -e ./Doxyfile ]]; then chmod +x gendoc fi in the enlightenment_src_compile function, before the line use doc && [[ -x ./gendoc ]] ...
fixed, thankws