[binutils-gdb] gdb: don't use bashism in configure test

[Andrew Burgess <aburgess@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c714aff10b1a5542dac657d86eb56140945bbd65

commit c714aff10b1a5542dac657d86eb56140945bbd65
Author: Sam James <sam@gentoo.org>
Date:   Thu Jun 9 04:37:51 2022 +0100

    gdb: don't use bashism in configure test
    
    Results in configure output like:
    ```
    checking for X... no
    /var/tmp/portage/sys-devel/gdb-12.1/work/gdb-12.1/gdb/configure: 18837: test: yes: unexpected operator
    checking whether to use babeltrace... auto
    ```
    
    ... when /bin/sh is provided by a POSIX-compliant shell, like dash,
    instead of bash.

Diff:
---
 gdb/configure    | 2 +-
 gdb/configure.ac | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gdb/configure b/gdb/configure
index 1008cbef28b..1b821390801 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -18760,7 +18760,7 @@ else
 fi
 
 
-if test "${enable_libbacktrace}" == "yes"; then
+if test "${enable_libbacktrace}" = "yes"; then
   LIBBACKTRACE_INC="-I$srcdir/../libbacktrace/ -I../libbacktrace/"
   LIBBACKTRACE_LIB=../libbacktrace/.libs/libbacktrace.a
 
diff --git a/gdb/configure.ac b/gdb/configure.ac
index e3c19bc8859..bf03b875dfe 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -2113,7 +2113,7 @@ AC_ARG_ENABLE([libbacktrace],
 esac],
 enable_libbacktrace=yes)
 
-if test "${enable_libbacktrace}" == "yes"; then
+if test "${enable_libbacktrace}" = "yes"; then
   LIBBACKTRACE_INC="-I$srcdir/../libbacktrace/ -I../libbacktrace/"
   LIBBACKTRACE_LIB=../libbacktrace/.libs/libbacktrace.a
   AC_DEFINE(HAVE_LIBBACKTRACE, 1, [Define if libbacktrace is being used.])