make tags-emacs output Linux $ make tags-emacs /usr/local/bin/perl -MExtUtils::Command -e rm_f TAGS ctags -e \ --links=no --totals \ -R --exclude=blib --exclude=.git \ --languages=c,perl --langmap=c:+.h,c:+.pmc,c:+.ops \ -I NOTNULL,NULLOK,ARGIN,ARGMOD,ARGOUT,ARGINOUT,ARGIN_NULLOK,ARGOUT_NULLOK,ARGMOD_NULLOK,ARGFREE,ARGFREE_NOTNULL \ . 985 files, 411812 lines (12184 kB) scanned in 0.8 seconds (15230 kB/s) 22424 tags added to tag file Darwin $ make tags-emacs /usr/local/bin/perl -MExtUtils::Command -e rm_f TAGS ctags -e \ --links=no --totals \ -R --exclude=blib --exclude=.git \ --languages=c,perl --langmap=c:+.h,c:+.pmc,c:+.ops \ -I NOTNULL,NULLOK,ARGIN,ARGMOD,ARGOUT,ARGINOUT,ARGIN_NULLOK,ARGOUT_NULLOK,ARGMOD_NULLOK,ARGFREE,ARGFREE_NOTNULL \ . ctags: illegal option -- e usage: ctags [-BFadtuwvx] [-f tagsfile] file ... make: *** [tags-emacs] Error 1