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# Test whether O_CLOEXEC is defined.
dnl Copyright 2017-2020 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_PREPROC_O_CLOEXEC],
[
AC_CACHE_CHECK([for O_CLOEXEC],
[gl_cv_macro_O_CLOEXEC],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <fcntl.h>
#ifndef O_CLOEXEC
choke me;
#endif
]],
[[return O_CLOEXEC;]])],
[gl_cv_macro_O_CLOEXEC=yes],
[gl_cv_macro_O_CLOEXEC=no])])
])
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