1 files changed, 22 insertions, 0 deletions
diff --git a/gnulib-m4/sched_yield.m4 b/gnulib-m4/sched_yield.m4
new file mode 100644
index 00000000..d463a702
--- /dev/null
+++ b/gnulib-m4/sched_yield.m4
@@ -0,0 +1,22 @@
+# sched_yield.m4 serial 2
+dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_SCHED_YIELD],
+[
+  AC_REQUIRE([gl_SCHED_H_DEFAULTS])
+  AC_REQUIRE([gl_PTHREADLIB])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  if { case "$host_os" in mingw*) true;; *) false;; esac; } \
+     && test $gl_threads_api = windows; then
+    dnl Choose function names that don't conflict with the mingw-w64 winpthreads
+    dnl library.
+    REPLACE_SCHED_YIELD=1
+  else
+    AC_CHECK_DECL([sched_yield], , [HAVE_SCHED_YIELD=0],
+      [[#include <sched.h>]])
+  fi
+])