Use MD5 checksums for recompilation checking (fixes #1372, #1959)

[ghc-hetmet.git] / compiler / utils / md5.h

diff --git a/compiler/utils/md5.h b/compiler/utils/md5.h
new file mode 100644 (file)
index 0000000..8d375df
--- /dev/null
+++ b/compiler/utils/md5.h
@@ -0,0 +1,24 @@
+/* MD5 message digest */
+#ifndef _MD5_H
+#define _MD5_H
+
+#include "HsFFI.h"
+
+typedef HsWord32 word32;
+typedef HsWord8  byte;
+
+struct MD5Context {
+       word32 buf[4];
+       word32 bytes[2];
+       word32 in[16];
+};
+
+void MD5Init(struct MD5Context *context);
+void MD5Update(struct MD5Context *context, byte const *buf, int len);
+void MD5Final(byte digest[16], struct MD5Context *context);
+void MD5Transform(word32 buf[4], word32 const in[16]);
+
+#endif /* _MD5_H */
+
+
+