--- np2/x11/configure.ac	2012/01/29 15:00:55	1.24
+++ np2/x11/configure.ac	2012/02/05 00:01:05	1.29
@@ -4,9 +4,9 @@ dnl
 
 dnl require autoconf 2.59
 AC_PREREQ(2.59)
-AC_REVISION($Revision: 1.24 $)
+AC_REVISION($Revision: 1.29 $)
 
-AC_INIT(Xnp2,0.83-20120129,nonakap@gmail.com,xnp2)
+AC_INIT(Xnp2,0.83-20120205,nonakap@gmail.com,xnp2)
 AM_INIT_AUTOMAKE([no-define no-dist no-installinfo subdir-objects])
 AC_CONFIG_SRCDIR([../np2ver.h])
 AC_CONFIG_HEADERS(config.h)
@@ -42,6 +42,7 @@ AC_STRUCT_TM
 AC_C_VOLATILE
 AC_CHECK_TYPES([ptrdiff_t])
 AC_SYS_LARGEFILE
+AC_C_CHAR_UNSIGNED
 
 dnl
 dnl Check GCC
@@ -111,7 +112,7 @@ AC_DEFINE(USE_GTK2,1,[Define to 1 if you
 dnl
 dnl Checks for SDL
 dnl
-if test x"$enable_sdlmixer" = "xyes"; then
+if test x"$enable_sdl" = "xyes"; then
   AM_PATH_SDL(1.2.0)
   if test x"$no_sdl" != "xyes"; then
     AC_DEFINE(USE_SDLAUDIO,,[Define if you have the SDL library.])