--- a/configure.ac	2015-05-04 14:48:03.467935640 -0400
+++ b/configure.ac	2015-05-04 14:48:24.729199607 -0400
@@ -80,7 +80,7 @@
 		       [have_allegro="no"])
 	AC_MSG_RESULT([$have_allegro])
 	LIBS=$LIBS_SAVE
-	AS_IF([test "x$have_allegro" == "xyes"],
+	AS_IF([test "x$have_allegro" = "xyes"],
 	      [return 0],
 	      [return 1])
 }
@@ -89,7 +89,7 @@
 AM_PATH_ALLEGRO([4.2.0]) 
 
 try_link_allegro "$allegro_LIBS"
-AS_IF([test "x$?" == "x0"],
+AS_IF([test "x$?" = "x0"],
       [[LIBS="$LIBS $allegro_LIBS"
        ALLEGRO_LIB=`echo $allegro_LIBS | sed -e 's/-l\([^[:blank:]]*\).*/\1/'`
        have_allegro="yes"]])
@@ -103,10 +103,10 @@
 for lib in $ALLEGRO_LIBS
 do
 	ldflag="-l$lib"
-	AS_IF([test "x$have_allegro" == "xyes"],
+	AS_IF([test "x$have_allegro" = "xyes"],
 	      [break])
 	try_link_allegro $ldflag
-	AS_IF([test "x$?" == "x0"],
+	AS_IF([test "x$?" = "x0"],
 	      [LIBS="$LIBS $ldflag"
 	       ALLEGRO_LIB="$lib"
 	       have_allegro="yes"])