--- np2/x11/configure.ac	2011/12/24 04:09:20	1.13
+++ np2/x11/configure.ac	2011/12/29 13:36:26	1.15
@@ -4,7 +4,7 @@ dnl
 
 dnl require autoconf 2.59
 AC_PREREQ(2.59)
-AC_REVISION($Revision: 1.13 $)
+AC_REVISION($Revision: 1.15 $)
 
 AC_INIT(Xnp2,0.83-20111224,nonakap@gmail.com,xnp2)
 AM_INIT_AUTOMAKE([no-define no-dist no-installinfo subdir-objects])
@@ -97,6 +97,9 @@ AC_ARG_ENABLE(ia32,
 AC_ARG_ENABLE(debug,
   AC_HELP_STRING([--enable-debug],[Enable debugging [[default=no]]]),,
   [enable_debug="no"])
+AC_ARG_ENABLE(warning,
+  AC_HELP_STRING([--enable-warning],[Enable warning [[default=no]]]),,
+  [enable_warning="no"])
 
 dnl
 dnl Checks for GTK+
@@ -135,11 +138,11 @@ if test x"$enable_xf86vidmode" = "xyes";
   ac_cv_save_cflags=$CFLAGS
   CFLAGS="$CFLAGS $X_CFLAGS"
   AC_CHECK_LIB(Xext,XextCreateExtension,
-    [XLIB="-lXext $XLIB"],,[$X_LIBS $X_PRE_LIBS $XLIB $X_EXTRA_LIBS])
+    XLIB="-lXext $XLIB",,[$X_LIBS $X_PRE_LIBS $XLIB $X_EXTRA_LIBS])
   AC_CHECK_HEADERS(X11/extensions/xf86vmode.h,
     [AC_CHECK_LIB(Xxf86vm,XF86VidModeQueryExtension,
-      [X_PRE_LIBS="$X_PRE_LIBS -lXxf86vm"
-      AC_DEFINE(HAVE_XF86VIDMODE,1,[Define to 1 if you have the libXxf86vm library.])],,
+      X_PRE_LIBS="$X_PRE_LIBS -lXxf86vm"
+      AC_DEFINE(HAVE_XF86VIDMODE,1,[Define to 1 if you have the libXxf86vm library.]),,
       $X_LIBS $X_PRE_LIBS $XLIB $X_EXTRA_LIBS)],
     ,
     [#include <X11/Xlib.h>])
@@ -162,16 +165,34 @@ dnl
 AC_MSG_CHECKING([whether to enable debugging])
 if test x"$enable_debug" = "xyes"; then
   CFLAGS="$CFLAGS -DDEBUG -g -O0"
-  CFLAGS="$CFLAGS -Wall -Wcast-align"
-  CFLAGS="$CFLAGS -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations"
-  CFLAGS="$CFLAGS -Wextra -Wno-sign-compare -Wno-unused-parameter -Wno-missing-field-initializers"
   CFLAGS="$CFLAGS -Wstack-protector -fstack-protector --param ssp-buffer-size=1"
+  enable_warning=yes
 else
   CFLAGS="$CFLAGS -DNDEBUG"
 fi
 AC_MSG_RESULT($enable_debug)
 
 dnl
+dnl Checks for warning
+dnl
+AC_MSG_CHECKING([whether to enable warning])
+if test x"$enable_warning" = "xyes"; then
+  CFLAGS="$CFLAGS -Wall -Wcast-align"
+  CFLAGS="$CFLAGS -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations"
+  CFLAGS="$CFLAGS -Wextra -Wno-sign-compare -Wno-unused-parameter -Wno-missing-field-initializers"
+fi
+AC_MSG_RESULT($enable_warning)
+
+dnl
+dnl Checks for Xnp2 version
+dnl
+NP2VER_X11=`echo $PACKAGE_VERSION | $AWK 'BEGIN {FS="-"} NF==2 {print $2}'`
+if test x"$NP2VER_X11" != "x"; then
+  NP2VER_X11="\"-$NP2VER_X11\""
+  AC_DEFINE_UNQUOTED(NP2VER_X11,$NP2VER_X11,[Define if Xnp2 version is available])
+fi
+
+dnl
 dnl Output Makefiles
 dnl
 AC_CONFIG_FILES([Makefile])