From b5f6a4650334d58245b45eace57f2bc23467ffc7 Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Mon, 20 Jun 2022 14:04:37 +0200
Subject: [PATCH] build: Fix `::_wsystem` check

See https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/system-wsystem
---
 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index a4a23474c82..ffa445b46fd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1261,8 +1261,8 @@ AC_LINK_IFELSE(
 AC_MSG_CHECKING([for ::_wsystem])
 AC_LINK_IFELSE(
     [ AC_LANG_PROGRAM(
-        [[ ]],
-        [[ int nErr = ::_wsystem(""); ]]
+        [[ #include <stdlib.h> ]],
+        [[ int nErr = ::_wsystem(NULL); ]]
     )],
     [ AC_MSG_RESULT([yes]); have_any_system=yes],
     [ AC_MSG_RESULT([no]) ]