- Remove alext.h dependency and manually add the required macros

- Use ALC_DEFAULT_ALL_DEVICES_SPECIFIER instead of ALC_DEFAULT_DEVICE_SPECIFIER if extension exists

code/client/qal.h

@@ -44,10 +44,16 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #else
   #include <AL/al.h>
   #include <AL/alc.h>
-  #include <AL/alext.h>
 #endif
 #endif
 
+/* Hack to enable compiling both on OpenAL SDK and OpenAL-soft. */
+#ifndef ALC_ENUMERATE_ALL_EXT
+#  define ALC_ENUMERATE_ALL_EXT 1
+#  define ALC_DEFAULT_ALL_DEVICES_SPECIFIER        0x1012
+#  define ALC_ALL_DEVICES_SPECIFIER                0x1013
+#endif
+
 #ifdef USE_OPENAL_DLOPEN
 extern LPALENABLE qalEnable;
 extern LPALDISABLE qalDisable;