diff -urpN --exclude-from=/home/davej/.exclude bk-linus/scripts/split-include.c linux-2.5/scripts/split-include.c
--- bk-linus/scripts/split-include.c	2002-11-21 02:25:36.000000000 +0000
+++ linux-2.5/scripts/split-include.c	2002-11-21 18:05:58.000000000 +0000
@@ -115,10 +115,10 @@ int main(int argc, const char * argv [])
 
 	/* Make the output file name. */
 	str_config += sizeof("CONFIG_") - 1;
-	for (itarget = 0; !isspace(str_config[itarget]); itarget++)
+	for (itarget = 0; !isspace((int)str_config[itarget]); itarget++)
 	{
 	    int c = (unsigned char) str_config[itarget];
-	    if (isupper(c)) c = tolower(c);
+	    if (isupper((int)c)) c = tolower(c);
 	    if (c == '_')   c = '/';
 	    ptarget[itarget] = c;
 	}