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-rw-r--r--src/configure.in4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/configure.in b/src/configure.in
index 84529c1..61ef738 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -842,6 +842,10 @@ AC_CHECK_TYPES([struct rt_msghdr], , , [
#include <net/route.h>
])
+# Tests for 64-bit edwards25519 code.
+AC_CHECK_SIZEOF([size_t])
+AC_CHECK_TYPES([__int128_t, __uint128_t])
+
# stuff for util/profile
# AC_KRB5_TCL already done