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-rw-r--r--build-aux/x-to-1.in15
1 files changed, 14 insertions, 1 deletions
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"