--- configure.ac.orig	2023-05-05 08:11:07 UTC
+++ configure.ac
@@ -46,8 +46,6 @@ AC_CONFIG_HEADER(config.h)
 AC_CHECK_HEADERS([stdatomic.h],,AC_MSG_ERROR([C11 atomic types are not supported]))
 AC_CONFIG_HEADER(config.h)
 
-AC_CHECK_TYPES([errno_t], [], [], [[#include <errno.h>]])
-
 m4_include([src/build_macros.m4])
 BUILD_WITH_SHARED_BUILD_DIR