cmake support

cmake/TestForHighBitCharacters.c

@@ -0,0 +1,22 @@
+#include <ctype.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+     (('a' <= (c) && (c) <= 'i') \
+	 || ('j' <= (c) && (c) <= 'r') \
+	 || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+  main ()
+{
+   int i;
+   for (i = 0; i < 256; i++)
+     if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i))
+       exit(1);
+   exit (0);
+}