-#serial 1
+#serial 4
dnl From Jim Meyering
dnl Using code from emacs, based on suggestions from Paul Eggert
dnl and Ulrich Drepper.
dnl Find out how to determine the number of pending output bytes on a stream.
-dnl Solaris provides __fpending. On other systems, we have to grub around
-dnl in the FILE struct.
+dnl glibc (2.1.93 and newer) and Solaris provide __fpending. On other systems,
+dnl we have to grub around in the FILE struct.
-AC_DEFUN(jm_FUNC_FPENDING,
+AC_DEFUN([gl_FUNC_FPENDING],
[
AC_CHECK_HEADERS(stdio_ext.h)
AC_REPLACE_FUNCS([__fpending])
+ fp_headers='
+# if HAVE_STDIO_EXT_H
+# include <stdio_ext.h>
+# endif
+'
+ AC_CHECK_DECLS([__fpending], , , $fp_headers)
if test $ac_cv_func___fpending = no; then
AC_CACHE_CHECK(
[how to determine the number of pending output bytes on a stream],
ac_cv_sys_pending_output_n_bytes,
[
- fp_save_DEFS=$DEFS
for ac_expr in \
\
'# glibc2' \
# Skip each embedded comment.
case "$ac_expr" in '#'*) continue;; esac
- DEFS="$DEFS -DPENDING_OUTPUT_N_BYTES=$ac_expr"
AC_TRY_COMPILE(
[#include <stdio.h>
],
[FILE *fp = stdin; (void) ($ac_expr);],
fp_done=yes
)
- DEFS=$fp_save_DEFS
test "$fp_done" = yes && break
done