[PATCH 1/2] [maint] Add a convenience target for checking manual pages.

* configure.ac: New recursive target, check-all-manpages, for
convenience in lint-checking manual pages.
* find/Makefile.am: Add new target check-all-manpages-local.  This
checks the manpages only.  This is faster than invoking "make
check" so it is convenient when working with manual page updates.
* locate/Makefile.am: Likewise.
* xargs/Makefile.am: Likewise.
* po/Rules-findutils-no-ops: add dummy rules for the new
recursive and local targets. These need to succeed, but Automake
does not add these rules in po/ as it doesn't manage the Makefile
there.
---
 configure.ac              |  2 ++
 find/Makefile.am          |  4 +---
 locate/Makefile.am        |  4 +---
 po/Rules-findutils-no-ops | 14 ++++++++++++++
 xargs/Makefile.am         |  4 +---
 5 files changed, 19 insertions(+), 9 deletions(-)
 create mode 100644 po/Rules-findutils-no-ops

diff --git a/configure.ac b/configure.ac
index 5f32c74f..f57d80dd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -301,6 +301,8 @@ AC_ARG_VAR(GROFF,[Location of GNU groff])
 AC_CHECK_PROGS([GROFF], [groff],[:])
 
 
+AM_EXTRA_RECURSIVE_TARGETS([check-all-manpages])
+
 # This is necessary so that .o files in LIBOBJS are also built via
 # the ANSI2KNR-filtering rules.
 #LIBOBJS=`echo $LIBOBJS|sed 's/\.o /\$U.o /g;s/\.o$/\$U.o/'`
diff --git a/find/Makefile.am b/find/Makefile.am
index 4d8bb2de..3df4ea74 100644
--- a/find/Makefile.am
+++ b/find/Makefile.am
@@ -40,8 +40,6 @@ SUBDIRS = . testsuite
 
 noinst_PROGRAMS = getlimits
 
-check-local: findutils-check-manpages
-
 # Clean coverage files generated by running binaries built with
 # gcc -fprofile-arcs -ftest-coverage
 coverage-clean:
@@ -49,5 +47,5 @@ coverage-clean:
 
 clean-local: coverage-clean
 
-findutils-check-manpages:
+check-local check-all-manpages-local:
 	env GROFF=$(GROFF) $(top_srcdir)/build-aux/man-lint.sh $(srcdir) $(man_MANS)
diff --git a/locate/Makefile.am b/locate/Makefile.am
index 183b9532..a78e5ceb 100644
--- a/locate/Makefile.am
+++ b/locate/Makefile.am
@@ -79,9 +79,7 @@ dblocation.texi:
 
 SUBDIRS = . testsuite
 
-check-local: findutils-check-manpages
-
-findutils-check-manpages:
+check-local check-all-manpages-local:
 	env GROFF=$(GROFF) $(top_srcdir)/build-aux/man-lint.sh $(srcdir) $(man_MANS)
 
 # Clean coverage files generated by running binaries built with
diff --git a/po/Rules-findutils-no-ops b/po/Rules-findutils-no-ops
new file mode 100644
index 00000000..aa45f55d
--- /dev/null
+++ b/po/Rules-findutils-no-ops
@@ -0,0 +1,14 @@
+# Rules-findutils-no-ops: Special Makefile rules for recursive make
+# targets in findutils that don't need to do anything (but need not to
+# fail).
+
+# IMPORTANT: if you modify this file (Rules-findutils-no-ops), you may
+# need to manually run config.status (or configure) to re-generate the
+# Makefile in this directory; the generated Makefile doesn't
+# automatically incllude a rule for this.
+
+
+.PHONY: check-all-manpages-local
+
+check-all-manpages check-all-manpages-local:
+	true
diff --git a/xargs/Makefile.am b/xargs/Makefile.am
index 2703cce5..bdfacdcf 100644
--- a/xargs/Makefile.am
+++ b/xargs/Makefile.am
@@ -25,9 +25,7 @@ SUBDIRS = . testsuite
 
 $(PROGRAMS): ../lib/libfind.a ../gl/lib/libgnulib.a
 
-check-local: findutils-check-manpages
-
-findutils-check-manpages:
+check-local check-all-manpages-local:
 	env GROFF=$(GROFF) $(top_srcdir)/build-aux/man-lint.sh $(srcdir) $(man_MANS)
 
 # Clean coverage files generated by running binaries built with
-- 
2.39.5