From 5e8747ae2a0c915d079837d238f8b84841a4ce5c Mon Sep 17 00:00:00 2001
From: Tim Ruffing <crypto@timruffing.de>
Date: Mon, 18 May 2020 12:27:14 +0200
Subject: [PATCH] autoconf: Use ":" instead of "dnl" as a noop

Fixes #424.
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 7f762fa31ba7e..6021b760b517c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -210,7 +210,7 @@ if test x"$use_ecmult_static_precomputation" != x"no"; then
   AC_RUN_IFELSE(
     [AC_LANG_PROGRAM([], [])],
     [working_native_cc=yes],
-    [working_native_cc=no],[dnl])
+    [working_native_cc=no],[:])
 
   CFLAGS_FOR_BUILD="$CFLAGS"