https://github.com/openucx/ucx/pull/8494

From c65087d7984f516485c11b4b732d9ac2676a494e Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Sat, 3 Sep 2022 00:28:28 +0100
Subject: [PATCH] config: Fix bashisms in configure

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 for go... yes
./configure: 26781: test: xyes: unexpected operator
```

Signed-off-by: Sam James <sam@gentoo.org>
--- a/config/m4/go.m4
+++ b/config/m4/go.m4
@@ -21,7 +21,7 @@ AS_IF([test "x$with_go" != xno],
                   [AS_VERSION_COMPARE([1.16], [`go version | awk '{print substr($3, 3, length($3)-2)}'`],
                                       [go_happy="yes"], [go_happy="yes"], [go_happy=no])],
                   [go_happy=no])
-            AS_IF([test "x$go_happy" == xno],
+            AS_IF([test "x$go_happy" = xno],
                   [AS_IF([test "x$with_go" = "xguess"],
                          [AC_MSG_WARN([Disabling GO support - GO compiler version 1.16 or newer not found.])],
                          [AC_MSG_ERROR([GO support was explicitly requested, but go compiler not found.])])])
--- a/configure.ac
+++ b/configure.ac
@@ -159,7 +159,7 @@ AC_ARG_WITH([docs_only],
 AC_DEFUN([UCX_DX_ENABLE_CHECK],
          [AS_IF([DX_TEST_FEATURE($1)],
                 [],
-                [AS_IF([test "x$enable_doxygen_$1" == xyes],
+                [AS_IF([test "x$enable_doxygen_$1" = xyes],
                        [AC_MSG_ERROR([--enable-doxygen-$1 was specified, but $1 tools were not found])],
                        [])])])