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Re: portability to BeOS


From: Eric Blake
Subject: Re: portability to BeOS
Date: Mon, 08 May 2006 21:40:16 -0600
User-agent: Thunderbird 1.5.0.2 (Windows/20060308)

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[Adding m4-patches]

Hi Bruno,

According to Bruno Haible on 5/2/2006 8:26 AM:
> Here is the fix, ported to the current m4 CVS.
> 
> 
> 2006-04-30  Bruno Haible  <address@hidden>
> 
>       * modules/m4.c (WEXITSTATUS): Provide fallback definition.
>       (sysval): Use WEXITSTATUS.
>       * modules/gnu.c (esyscmd): Set sysval to 0xffff, to accomodate both
>       big-endian and little-endian wait status definitions.

Thanks for the patch.  The patch was still trivial enough to not need
copyright paperwork, so I applied it with minor formatting changes (as
attached).

- --
Life is short - so eat dessert first!

Eric Blake             address@hidden
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Index: modules/gnu.c
===================================================================
RCS file: /sources/m4/m4/modules/gnu.c,v
retrieving revision 1.37
diff -u -p -r1.37 gnu.c
--- modules/gnu.c       8 May 2005 00:37:44 -0000       1.37
+++ modules/gnu.c       9 May 2006 03:36:36 -0000
@@ -1,6 +1,5 @@
 /* GNU m4 -- A simple macro processor
-
-  Copyright (C) 2000, 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2004, 2005, 2006 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -557,7 +556,7 @@ M4BUILTIN_HANDLER (esyscmd)
        {
          M4ERROR ((m4_get_warning_status_opt (context), errno,
                    _("Cannot open pipe to command `%s'"), M4ARG (1)));
-         m4_set_sysval (0xff << 8);
+         m4_set_sysval (0xffff);
        }
       else
        {
Index: modules/m4.c
===================================================================
RCS file: /sources/m4/m4/modules/m4.c,v
retrieving revision 1.60
diff -u -p -r1.60 m4.c
--- modules/m4.c        4 May 2005 18:56:36 -0000       1.60
+++ modules/m4.c        9 May 2006 03:36:36 -0000
@@ -1,5 +1,5 @@
 /* GNU m4 -- A simple macro processor
-   Copyright (C) 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -426,6 +426,10 @@ M4BUILTIN_HANDLER (defn)
 /* Exit code from last "syscmd" command.  */
 int  m4_sysval = 0;
 
+#ifndef WEXITSTATUS
+# define WEXITSTATUS(status) (((status) >> 8) & 0xff)
+#endif
+
 void
 m4_set_sysval (int value)
 {
@@ -451,7 +455,7 @@ M4BUILTIN_HANDLER (syscmd)
 
 M4BUILTIN_HANDLER (sysval)
 {
-  m4_shipout_int (obs, (m4_sysval >> 8) & 0xff);
+  m4_shipout_int (obs, WEXITSTATUS (m4_sysval));
 }
 
 

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