X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Ffpending.m4;h=145c86a0bc4dcf9bca286cb45cc3d92fcea65981;hb=455b3a9a5e1861152fe403dea25636586d256544;hp=b512f5d0bd1fbea49e8062ebb2ffa7395fa0b3be;hpb=b3467d18575fa78e0b7a86e40b74a6a86e91f630;p=gnulib.git

diff --git a/m4/fpending.m4 b/m4/fpending.m4
index b512f5d0b..145c86a0b 100644
--- a/m4/fpending.m4
+++ b/m4/fpending.m4
@@ -1,23 +1,28 @@
-#serial 1
+#serial 3
 
 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([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 $ac_cv_func___fpending = no; then
     AC_CACHE_CHECK(
 	      [how to determine the number of pending output bytes on a stream],
 		   ac_cv_sys_pending_output_n_bytes,
       [
-        fp_save_DEFS=$DEFS
 	for ac_expr in						\
 								\
 	    '# glibc2'						\
@@ -48,14 +53,12 @@ AC_DEFUN(jm_FUNC_FPENDING,
 	  # 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