Add -Wundef and fix missing definitions

config.h.in

@@ -180,9 +180,6 @@
 /* Define to 1 if you have the <mach/mach_time.h> header file. */
 #undef HAVE_MACH_MACH_TIME_H
 
-/* Define to 1 if you have the <memory.h> header file. */
-#undef HAVE_MEMORY_H
-
 /* Define to 1 if you have the `memset_s' function. */
 #undef HAVE_MEMSET_S
 
@@ -237,6 +234,9 @@
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
+/* Define to 1 if you have the <stdio.h> header file. */
+#undef HAVE_STDIO_H
+
 /* Define to 1 if you have the <stdlib.h> header file. */
 #undef HAVE_STDLIB_H
 
@@ -417,17 +417,14 @@
 /* Define to the type of arg 5 for `select'. */
 #undef SELECT_TYPE_ARG5
 
-/* Define to 1 if you have the ANSI C header files. */
+/* Define to 1 if all of the C90 standard headers exist (not just the ones
+   required in a freestanding environment). This macro is provided for
+   backward compatibility; new code need not use it. */
 #undef STDC_HEADERS
 
 /* Use /dev/ptmx */
 #undef USE_DEV_PTMX
 
-/* Enable large inode numbers on Mac OS X 10.5.  */
-#ifndef _DARWIN_USE_64_BIT_INODE
-# define _DARWIN_USE_64_BIT_INODE 1
-#endif
-
 /* Number of bits in a file offset, on hosts where this is settable. */
 #undef _FILE_OFFSET_BITS
 
@@ -446,7 +443,7 @@
 /* Define to `int' if <sys/types.h> does not define. */
 #undef mode_t
 
-/* Define to `int' if <sys/types.h> does not define. */
+/* Define as a signed integer type capable of holding a process identifier. */
 #undef pid_t
 
 /* Define to `unsigned int' if <sys/types.h> does not define. */

configure.ac

@@ -48,6 +48,9 @@ DB_TRYADDCFLAGS([-Wno-pointer-sign])
 AC_MSG_NOTICE([Checking if compiler '$CC' supports -fno-strict-overflow])
 DB_TRYADDCFLAGS([-fno-strict-overflow])
 
+AC_MSG_NOTICE([Checking if compiler '$CC' supports -Wundef])
+DB_TRYADDCFLAGS([-Wundef])
+
 # needed for various extensions. define early before autoconf tests
 AC_DEFINE([_GNU_SOURCE], [], [Use GNU extensions if glibc])
 

default_options.h

@@ -122,6 +122,7 @@ IMPORTANT: Some options will require "make clean" after changes */
    sha1 for compatibility */
 #define DROPBEAR_SHA1_HMAC 1
 #define DROPBEAR_SHA2_256_HMAC 1
+#define DROPBEAR_SHA2_512_HMAC 0
 #define DROPBEAR_SHA1_96_HMAC 0
 
 /* Hostkey/public key algorithms - at least one required, these are used

sysoptions.h

@@ -365,5 +365,13 @@
 #define DROPBEAR_MSAN 0
 #endif
 
+#ifndef DEBUG_DSS_VERIFY
+#define DEBUG_DSS_VERIFY 0
+#endif
+
+#ifndef DROPBEAR_MULTI
+#define DROPBEAR_MULTI 0
+#endif
+
 
 /* no include guard for this file */