* lib/autoconf/functions.m4 (AC_FUNC_SETPGRP): Fix the test.

From Akinori Musha.

ChangeLog

@@ -1,3 +1,8 @@
+2002-02-25  Akim Demaille  <akim@epita.fr>
+
+	* lib/autoconf/functions.m4 (AC_FUNC_SETPGRP): Fix the test.
+	From Akinori Musha.
+
 2002-02-13  Alexandre Duret-Lutz  <duret_g@epita.fr>
 
 	* lib/Autom4te/XFile.pm (getline, getlines): New functions,

NEWS

@@ -66,6 +66,8 @@
   assignments.
 - AC_PATH_PROG and family.
   Works properly when given a literal path.
+- AC_FUNC_SETPGRP
+  Somewhere since 2.13, the result had been reversed.
 
 ** C Macros
 

THANKS

@@ -6,6 +6,7 @@ Aaron Crane                 aaronc@pobox.com
 Aaron M. Ucko               amu@alum.mit.edu
 Aharon Robbins              arnold@gnu.org
 Akim Demaille               akim@freefriends.org
+Akinori Musha               knu@iDaemons.org
 Alain Knaff                 Alain.Knaff@imag.fr
 Alec Wolman                 wolman@cs.washington.edu
 Alexandre Duret-Lutz        duret_g@epita.fr

lib/autoconf/functions.m4

@@ -1109,9 +1109,10 @@ AC_DEFUN([AC_FUNC_SETPGRP],
 # include <unistd.h>
 #endif
 ],
-[/* If this system has a BSD-style setpgrp, which takes arguments, exit
-   successfully.  */
-  exit (setpgrp (1,1) == -1);])],
+[/* If this system has a BSD-style setpgrp which takes arguments,
+  setpgrp(1, 1) will fail with ESRCH and return -1, in that case
+  exit successfully. */
+  exit (setpgrp (1,1) == -1 ? 0 : 1);])],
                [ac_cv_func_setpgrp_void=no],
                [ac_cv_func_setpgrp_void=yes],
                [AC_MSG_ERROR([cannot check setpgrp if cross compiling])])])