From: Karl Berry <karl@freefriends.org>
Date: Sat, 2 Dec 2023 22:53:12 +0000 (-0800)
Subject: configure: better check for the perl patch containing whitespace.
X-Git-Tag: v1.16i~8
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=f2b1058326803a72497f73ae8c39b7883b32f857;p=thirdparty%2Fautomake.git

configure: better check for the perl patch containing whitespace.

More for https://bugs.gnu.org/62896.

* configure.ac: quote "$PERL" and check directly with grep.
---

diff --git a/configure.ac b/configure.ac
index 23a9f97f5..946fecb67 100644
--- a/configure.ac
+++ b/configure.ac
@@ -70,8 +70,8 @@ AC_PROG_LN_S
 AC_PATH_PROG([PERL], [perl])
 if test -z "$PERL"; then
    AC_MSG_ERROR([perl not found])
-elif test x"`echo $PERL | grep ' '`" != "x"; then
-  AC_MSG_ERROR([The path to your Perl contains spaces.
+elif echo "$PERL" | grep '[ 	]' >/dev/null; then
+  AC_MSG_ERROR([The path to your Perl contains spaces or tabs.
 This would cause build failures later or unusable programs.
 Please use a path without spaces and try again.])
 fi