Downstream bug:
https://bugzilla.redhat.com/show_bug.cgi?id=459238

Either import one from Debian, or better yet, use help2man.
I've used help2man in other projects of mine and it's certainly a very useful piece of software.

This is the Makefile.am piece I use in preload:

MAINTAINERCLEANFILES = preload.8

dist_man_MANS = preload.8

$(srcdir)/preload.8: cmdline.c ../configure.ac preload.8.i
        $(MAKE) $(AM_MAKEFLAGS) preload
        @echo "Creating $@ using help2man(1)"
        @$(top_builddir)/missing --run \
           help2man --no-info --section=8 --include=preload.8.i \
                    --help-option="-H" --output="$@.tmp" \
                    --name 'Adaptive readahead daemon' ./preload \
         && mv "$@.tmp" "$@" \
          || ($(RM) "$@"; \
              echo Failed to update preload.8, the man page may be outdated >&2; \
              (test -f "$@" || echo help2man is required to generate this file. >> "$@"));

install-data-hook:
        @cd "$(DESTDIR)$(man8dir)" && gzip -c preload.8 > preload.8.gz && $(RM) preload.8

uninstall-hook:
        $(RM) "$(DESTDIR)$(man8dir)/preload.8.gz"