From ab5b2560b129ae8dc939d79d0be4af6b5ec46885 Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Sat, 13 Apr 2019 15:12:15 +0200
Subject: x-to-1: Avoid failure due to missing perl modules.

* build-aux/x-to-1.in: Test whether all the perl modules that help2man
needs are installed.
---
 build-aux/x-to-1.in | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'build-aux/x-to-1.in')

diff --git a/build-aux/x-to-1.in b/build-aux/x-to-1.in
index 1b09d33db4..b31175f904 100644
--- a/build-aux/x-to-1.in
+++ b/build-aux/x-to-1.in
@@ -41,7 +41,20 @@ aux="$4"
 output="$5"
 
 progname=`basename $aux .x`
-case "$PERL" in *"/missing perl") perlok=no;; *) perlok=yes;; esac
+# configure determined whether perl exists.
+case "$PERL" in
+  *"/missing perl")
+    perlok=no
+    ;;
+  *)
+    # Determine whether all the perl modules that help2man needs are installed.
+    if $PERL $HELP2MAN --help >/dev/null 2>/dev/null; then
+      perlok=yes
+    else
+      perlok=no
+    fi
+    ;;
+esac
 if test @CROSS_COMPILING@ = no && test -f $executable && test $perlok = yes; then
   echo "Updating man page $output"
   echo "$PERL $HELP2MAN --include=$aux $executable > $output"
-- 
cgit v1.2.1