# 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])])

])