https://github.com/tuxera/ntfs-3g/pull/58

From a008fc4b3553583369111b145172a92542de4598 Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Thu, 22 Sep 2022 04:00:45 +0100
Subject: [PATCH] configure.ac: fix bashism in fuse check

configure scripts need to be runnable with a POSIX-compliant /bin/sh.

On many (but not all!) systems, /bin/sh is provided by Bash, so errors
like this aren't spotted. Notably Debian defaults to /bin/sh provided
by dash which doesn't tolerate such bashisms as '=='.

This retains compatibility with bash.

Fixes configure warnings/errors like:
```
checking Windows OS... no
./configure: 13360: test: xinternal: unexpected operator
checking for pthread_create in -lpthread... yes
checking Solaris OS... no
```

Signed-off-by: Sam James <sam@gentoo.org>
--- a/configure.ac
+++ b/configure.ac
@@ -228,7 +228,7 @@ esac
 
 if test "x${enable_ntfs_3g}" != "xyes"; then
 	with_fuse="none"
-elif test "x${with_fuse}" == "x"; then
+elif test "x${with_fuse}" = "x"; then
 	AC_MSG_CHECKING([fuse compatibility])
 	case "${target_os}" in
 	linux*|solaris*)