man: add silent rules for mancheck

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Paul Dagnelie <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Rob Norris <[email protected]>
Closes #17747

Author: robn

man/Makefile.am

@@ -124,10 +124,21 @@ dist_noinst_DATA += $(dist_noinst_man_MANS) $(dist_man_MANS)
 
 SUBSTFILES += $(nodist_man_MANS)
 
-CHECKS += mancheck
-mancheck:
-	$(top_srcdir)/scripts/mancheck.sh $(srcdir)/%D%
+MANFILES = $(dist_noinst_man_MANS) $(dist_man_MANS) $(nodist_man_MANS)
+
+PHONY += mancheck
+
+mancheck_verbose = $(mancheck_verbose_@AM_V@)
+mancheck_verbose_ = $(mancheck_verbose_@AM_DEFAULT_V@)
+mancheck_verbose_0 = @echo MANCHECK $(_MTGT);
 
+_MTGT = $(subst ^,/,$(subst mancheck-,,$@))
+mancheck-%:
+	$(mancheck_verbose)scripts/mancheck.sh $(_MTGT)
+
+mancheck: $(foreach manfile, $(MANFILES), $(addprefix mancheck-,$(subst /,^,$(manfile))))
+
+CHECKS += mancheck
 
 if BUILD_LINUX
 # The manual pager in most Linux distros defaults to "BSD" when .Os is blank,