fi
ac_fn_c_check_func "$LINENO" "pthread_atfork" "ac_cv_func_pthread_atfork"
if test "x$ac_cv_func_pthread_atfork" = xyes
then :
  printf "%s\n" "#define HAVE_PTHREAD_ATFORK 1" >>confdefs.h

fi
ac_fn_c_check_func "$LINENO" "pthread_spin_lock" "ac_cv_func_pthread_spin_lock"
if test "x$ac_cv_func_pthread_spin_lock" = xyes
then :
  printf "%s\n" "#define HAVE_PTHREAD_SPIN_LOCK 1" >>confdefs.h

fi

    LIBS=$ac_saved_libs


# Add the threads support libraries
LIBS="$LIBS$THREADS_LIBS"

esac
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $tcl_cv_cc_input_charset" >&5
printf "%s\n" "$tcl_cv_cc_input_charset" >&6; }
    if test $tcl_cv_cc_input_charset = yes; then
	CFLAGS="$CFLAGS -finput-charset=UTF-8"
    fi

    ac_fn_c_check_header_compile "$LINENO" "stdatomic.h" "ac_cv_header_stdatomic_h" "$ac_includes_default"
if test "x$ac_cv_header_stdatomic_h" = xyes
then :

printf "%s\n" "#define HAVE_STDATOMIC_H 1" >>confdefs.h

fi


    # Check for vfork, posix_spawnp() and friends unconditionally
    ac_fn_c_check_func "$LINENO" "vfork" "ac_cv_func_vfork"
if test "x$ac_cv_func_vfork" = xyes
then :
  printf "%s\n" "#define HAVE_VFORK 1" >>confdefs.h