coreutils/man/dummy-man
Pádraig Brady 856b828320 build: reinstate distribution of man pages
man pages change little between systems,
so falling back to distributed pages make sense
when cross compiling or lacking perl.

* man/local.mk: Add all man pages to EXTRA_DIST
so that they're distributed in the generated tarball.
Use the dummy-man page generator if cross compiling.
Set TZ to avoid a distcheck failure where man pages
used a diffent month than those rebuilt (with a .timestamp).
* man/dummy-man: Only fall back to generating a stub
if copying an existing man page fails.
* man/help2man: Sync portable TZ=UTC0 specification
from upstream help2man.
* NEWS: Mention the build-related change.
Fixes https://bugs.gnu.org/28574
2017-10-01 17:32:48 -07:00

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#!/bin/sh
# Poor man's placeholder for help2man invocation on systems lacking perl,
# or when cross compiling.
# It just copies the distributed man pages.
set -e; set -u
fatal_ ()
{
printf '%s: %s\n' "$0" "$*" >&2
exit 1
}
basename_ ()
{
printf '%s\n' "$1" | sed 's,.*/,,'
}
output=
source="GNU coreutils"
while test $# -gt 0; do
case $1 in
# Help2man options we recognize and handle.
--output=*) output=`expr x"$1" : x'--output=\(.*\)'`;;
--output) shift; output=$1;;
--include=*) include=`expr x"$1" : x'--include=\(.*\)'`;;
--include) shift; include=$1;;
--source=*) source=`expr x"$1" : x'--source=\(.*\)'`;;
--source) shift; source=$1;;
# Recognize (as no-op) other help2man options that might be used
# in the makefile.
--info-page=*);;
-*) fatal_ "invalid or unrecognized help2man option '$1'";;
--) shift; break;;
*) break;;
esac
shift
done
test $# -gt 0 || fatal_ "missing argument"
test $# -le 1 || fatal_ "too many non-option arguments"
dist_man=$(printf '%s\n' "$include" | sed 's/\.x$/.1/')
test -f "$dist_man" && cp "$dist_man" "$output" && exit || :
baseout=`basename_ "$output"`
sed 's/^/WARNING: /' >&2 <<END
Did not generate or find default '$baseout' man page.
Creating a stub man page instead.
END
progname=`basename_ "$1"`
bs='\'
cat >"$output" <<END
.TH "$progname" 1 "$source" "User Commands"
.SH NAME
$progname $bs- a $source program
.SH DESCRIPTION
.B OOPS!
We were unable to create a proper manual page for
.B $progname.
For concise option descriptions, run
.IP
.B env $progname --help
.PP
The full documentation for
.B $progname
is maintained as a Texinfo manual, which should be accessible
on your system via the command
.IP
.B info $bs(aq(coreutils) $progname invocation$bs(aq
END