The files man/*.1 are included in the tarballs. By the GNU Coding Standards
<https://www.gnu.org/prep/standards/html_node/Makefile-Basics.html>
they should be generated in the source directory.

But this is not what happens:

$ ./configure; make -k maintainer-clean
$ ./bootstrap
$ mkdir bb
$ cd bb
$ ../configure
$ make
$ ls -l ../man/*.1
ls: cannot access '../man/*.1': No such file or directory
$ ls -l man/*.1
-rw-rw-r-- 1 bruno bruno 2245 21. Jul 21:12 man/cmp.1
-rw-rw-r-- 1 bruno bruno 6469 21. Jul 21:12 man/diff.1
-rw-rw-r-- 1 bruno bruno 2858 21. Jul 21:12 man/diff3.1
-rw-rw-r-- 1 bruno bruno 2869 21. Jul 21:12 man/sdiff.1

This patch fixes it.

With it, the result is:

$ ls -l ../man/*.1
-rw-rw-r-- 1 bruno bruno 2245 21. Jul 21:16 ../man/cmp.1
-rw-rw-r-- 1 bruno bruno 6469 21. Jul 21:16 ../man/diff.1
-rw-rw-r-- 1 bruno bruno 2858 21. Jul 21:16 ../man/diff3.1
-rw-rw-r-- 1 bruno bruno 2869 21. Jul 21:16 ../man/sdiff.1
$ ls -l man/*.1
ls: cannot access 'man/*.1': No such file or directory

>From 70bf44033736937e9b804930e7f23721e369d6df Mon Sep 17 00:00:00 2001
From: Bruno Haible <br...@clisp.org>
Date: Sun, 21 Jul 2024 21:22:28 +0200
Subject: [PATCH] build: Generate programs' man pages in the source directory,
 per GCS

* man/Makefile.am ($(dist_man1_MANS)): Generate the *.1 files in
$(srcdir), not in the build dir.
---
 man/Makefile.am | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/man/Makefile.am b/man/Makefile.am
index 8b1ea20..00ba124 100644
--- a/man/Makefile.am
+++ b/man/Makefile.am
@@ -34,7 +34,8 @@ $(dist_man1_MANS): $(SRC_VERSION_C) help2man
 	$(AM_V_GEN)base=`expr $@ : '\(.*\).1'`				\
 	  && test -x $(bin_dir)/$$base					\
 	  && (echo '[NAME]'						\
-              && sed 's@/\* *@@; s/-/\\-/;s/^GNU //; q' $S/$$base.c)	\
+	      && sed 's@/\* *@@; s/-/\\-/;s/^GNU //; q' $S/$$base.c)	\
 	     | PATH="$(bin_dir)$(PATH_SEPARATOR)$$PATH"			\
 	       $(srcdir)/help2man -i - -i $(srcdir)/$$base.x		\
-		 -S '$(PACKAGE) $(VERSION)' $$base > $@-t && mv $@-t $@
+	         -S '$(PACKAGE) $(VERSION)' $$base > $$base.1-t		\
+	  && mv $$base.1-t $(srcdir)/$$base.1
-- 
2.34.1

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