Index: trunk/scconfig/Makefile
===================================================================
--- trunk/scconfig/Makefile	(revision 2984)
+++ trunk/scconfig/Makefile	(revision 2985)
@@ -64,7 +64,14 @@
 CFLAGS = $(USER_CFLAGS) $(DEFAULT_CFLAGS) $(SCRIPT_CFLAGS) $(PARSER_CFLAGS) $(GENERATOR_CFLAGS) $(TMPASM_CFLAGS) $(C99_CFLAGS) $(PARSGEN_CFLAGS) $(MATH_CFLAGS) $(SOCKET_CFLAGS) $(USERPASS_CFLAGS) $(GUI_CFLAGS)  $(SUL_CFLAGS) $(MENULIB_CFLAGS) -Isrc/default
 LDFLAGS = $(USER_LDFLAGS) $(DEFAULT_LDFLAGS) $(SCRIPT_LDFLAGS) $(PARSER_LDFLAGS) $(GENERATOR_LDFLAGS) $(TMPASM_LDFLAGS) $(C99_LDFLAGS) $(PARSGEN_LDFLAGS) $(MATH_LDFLAGS) $(SOCKET_LDFLAGS) $(USERPASS_LDFLAGS) $(GUI_LDFLAGS) $(SUL_LDFLAGS) $(MENULIB_LDFLAGS)
 
+all: configure revtest
 
+revtest: revtest.o
+	$(CC) -o revtest revtest.o
+
+revtest.o: revtest.c  Rev.h
+	$(CC) -c $(CFLAGS) -o revtest.o revtest.c
+
 configure: $(OBJS)  $(DEFAULT_MAIN_OBJS)
 	$(CC) -o configure $(OBJS)  $(DEFAULT_MAIN_OBJS)
 
@@ -77,7 +84,7 @@
 menucfg.o: menucfg.c
 	$(CC) -c $(CFLAGS) -o menucfg.o menucfg.c
 
-hooks.o: plugin_3state.h plugins.h
+hooks.o: plugin_3state.h plugins.h Rev.h
 
 cquote: cquote.c
 
Index: trunk/scconfig/Rev.h
===================================================================
--- trunk/scconfig/Rev.h	(nonexistent)
+++ trunk/scconfig/Rev.h	(revision 2985)
@@ -0,0 +1 @@
+static const int myrev = 2984;
Index: trunk/scconfig/Rev.tab
===================================================================
--- trunk/scconfig/Rev.tab	(nonexistent)
+++ trunk/scconfig/Rev.tab	(revision 2985)
@@ -0,0 +1 @@
+2984	configure	Introduction of the config-rev system.
Index: trunk/scconfig/hooks.c
===================================================================
--- trunk/scconfig/hooks.c	(revision 2984)
+++ trunk/scconfig/hooks.c	(revision 2985)
@@ -8,6 +8,7 @@
 #include "tmpasm.h"
 #include "tmpasm_scconfig.h"
 #include "util/arg_auto_set.h"
+#include "Rev.h"
 
 #define version "1.1.1"
 
@@ -581,9 +582,18 @@
 #define plugin_dep(plg, on)
 #include "plugins.h"
 
-	if (repeat != NULL)
+	if (repeat != NULL) {
 		printf("\n%s\n", repeat);
 	}
+
+	{
+		FILE *f;
+		f = fopen("Rev.stamp", "w");
+		fprintf(f, "%d", myrev);
+		fclose(f);
+	}
+
+	}
 	else
 		fprintf(stderr, "Error generating some of the files\n");
 
Index: trunk/scconfig/revtest.c
===================================================================
--- trunk/scconfig/revtest.c	(nonexistent)
+++ trunk/scconfig/revtest.c	(revision 2985)
@@ -0,0 +1,76 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "Rev.h"
+
+const char *act_names[] = {
+	"distclean",
+	"configure",
+	"make clean",
+	NULL
+};
+
+int act_needed[16];
+
+int main(int argc, char *argv[])
+{
+	char line[8192];
+	int res = 0, stamp = 0, banner = 0;
+	FILE *f;
+
+	f = fopen(argv[1], "r");
+	if (f != NULL) {
+		fscanf(f, "%d", &stamp);
+		fclose(f);
+	}
+
+	while(fgets(line, sizeof(line), stdin) != NULL) {
+		char *end;
+		int rev;
+
+		if (*line == '#')
+			continue;
+		rev = strtol(line, &end, 10);
+		if (*end != '\t')
+			continue;
+
+		if (rev > stamp) {
+			char *act, *txt;
+			const char **a;
+			int idx;
+			res = 1;
+			act = end;
+			while(*act == '\t')
+				act++;
+			txt = strchr(act, '\t');
+			if (txt != NULL) {
+				*txt = '\0';
+				txt++;
+				while(*txt == '\t')
+					txt++;
+			}
+			if (!banner) {
+				fprintf(stderr, "\nYour source tree is stale (last configured at r%d). Recent new features:\n", stamp);
+				banner = 1;
+			}
+			fprintf(stderr, "\nr%d: %s\n", rev, txt);
+			for(idx = 0, a = act_names; *a != NULL; idx++, a++)
+				if (strstr(act, *a) != NULL)
+					act_needed[idx]++;
+		}
+	}
+
+	if (res) {
+		const char **a;
+		int idx;
+
+		fprintf(stderr, "(Stamp: %d myrev: %d)\n", stamp, myrev);
+		fprintf(stderr, "\nBefore running make, please do the following actions in this order:\n");
+		for(idx = 0, a = act_names; *a != NULL; idx++, a++)
+			if (act_needed[idx])
+				fprintf(stderr, "  run %s\n", *a);
+		fprintf(stderr, "\n");
+	}
+
+	return res;
+}