From f91f7bc3abf1676b33de0485b41e785a3fbd1f96 Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Tue, 15 Oct 2024 23:03:00 +0200
Subject: [PATCH] libtool.m4: Avoid word splitting on untrusted inputs

If $multilib is set to more than one word, the following error can be
seen during configuration:

	test: too many arguments

* m4/libtool.m4: Wrap variable in quotes.
---
 m4/libtool.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 5c748ab2..4b1b9d93 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -2584,7 +2584,7 @@ cygwin* | mingw* | windows* | pw32* | cegcc*)
     # If user builds GCC with multilib enabled,
     # it should just install on $(libdir)
     # not on $(libdir)/../bin or 32 bits dlls would override 64 bit ones.
-    if test xyes = x$multilib; then
+    if test xyes = x"$multilib"; then
       postinstall_cmds='base_file=`basename \$file`~
         dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; echo \$dlname'\''`~
         dldir=$destdir/`dirname \$dlpath`~