$NetBSD: patch-configure,v 1.6 2019/05/29 20:51:47 adam Exp $

Portability fixes.

--- configure.orig	2019-04-18 23:16:02.000000000 +0000
+++ configure
@@ -27567,7 +27567,7 @@ if test "x$ac_cv_header_GLES3_gl3_h" = x
 fi
 
 
-      if test "x$HAVE_GLES3_H" == "xyes"; then :
+      if test "x$HAVE_GLES3_H" = "xyes"; then :
 
              ac_fn_c_check_header_compile "$LINENO" "GLES3/gl3ext.h" "ac_cv_header_GLES3_gl3ext_h" "#include <GLES3/gl3.h>
 "
@@ -28386,8 +28386,8 @@ fi
   test -n "$WAYLAND_SCANNER" && break
 done
 
-    if test x"$HAVE_WAYLAND_EGL" == xyes ; then
-      if test x"$WAYLAND_SCANNER" == x ; then
+    if test x"$HAVE_WAYLAND_EGL" = xyes ; then
+      if test x"$WAYLAND_SCANNER" = x ; then
         as_fn_error $? "Found Wayland libraries, but couldn't find wayland-scanner binary." "$LINENO" 5
       fi
 
@@ -28527,10 +28527,10 @@ fi
 if test "x$HAVE_GL" = "xyes" -a "x$HAVE_GLES2" = "xyes"; then
   GLES3_H_DEFINE=0
   GLES3EXT3_H_DEFINE=0
-  if test "x$HAVE_GLES3_H" == "xyes"; then
+  if test "x$HAVE_GLES3_H" = "xyes"; then
     GLES3_H_DEFINE=1
   fi
-  if test "x$HAVE_GLES3EXT3_H" == "xyes"; then
+  if test "x$HAVE_GLES3EXT3_H" = "xyes"; then
     GLES3EXT3_H_DEFINE=1
   fi
   GL_INCLUDES="
