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_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],