The fix for gperf in0ae19f0cedadded the generated header to EXTRA_DIST but that's already added to the distribution because it is contained in *_SOURCES, what was not added, though, was the .h.in file. Also fixes the reference to the header file in the .c rule here and for stroke in out-of-tree builds. Fixes:0ae19f0ced("configure: Fix gperf length parameter determination")