This caused a trivial warning in curve25519-donna-64bit.h, which had two unused constants. I commented them out.
@@ -1778,6 +1778,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
CFLAGS="$CFLAGS -Wignored-attributes -Wshift-negative-value -Wshift-overflow=2"
CFLAGS="$CFLAGS -Wnull-dereference"
CFLAGS="$CFLAGS -Wduplicated-cond"
+ CFLAGS="$CFLAGS -Wunused-const-variable=2"
fi
if test "x$have_shorten64_flag" = "xyes"; then
@@ -8,9 +8,9 @@
typedef uint64_t bignum25519[5];
-static const uint64_t reduce_mask_40 = ((uint64_t)1 << 40) - 1;
+//static const uint64_t reduce_mask_40 = ((uint64_t)1 << 40) - 1;
static const uint64_t reduce_mask_51 = ((uint64_t)1 << 51) - 1;
-static const uint64_t reduce_mask_56 = ((uint64_t)1 << 56) - 1;
+//static const uint64_t reduce_mask_56 = ((uint64_t)1 << 56) - 1;
/* out = in */
DONNA_INLINE static void