[BusyBox] Undeclared

[Vladimir N. Oleynik]

Neal H Walfield wrote:
> 
> > >I am trying to compile busybox 0.60.0 for an arm integrator board but the
> > >process only gets so far when i get the following error :
> >
> >   POSIX system will have define of PATH_MAX, but some linux source or
> > tool chain support this. I experienced same as you on sh-linux.
> 
> 100% untrue.  POSIX does not sat that PATH_MAX is defined.  What it does
> say is that if PATH_MAX is defined, it is the maximum path length.  If
> it is not defined, there is no maximum.  Interpretation: if PATH_MAX is
> undefined, you must check pathconf and use that.  However, pathconf
> returns -1, there is also no file system limit.  Therefore, you must use
> a dynamic allocation routine.
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/* Define PATH_MAX somehow.  Requires sys/types.h.
   Copyright (C) 1992, 1999 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
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#ifndef _PATHMAX_H
# define _PATHMAX_H

# ifdef HAVE_UNISTD_H
#  include <unistd.h>
# endif

/* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define
   PATH_MAX but might cause redefinition warnings when sys/param.h is
   later included (as on MORE/BSD 4.3).  */
# if defined(_POSIX_VERSION) || (defined(HAVE_LIMITS_H) && !defined(__GNUC__))
#  include <limits.h>
# endif

# ifndef _POSIX_PATH_MAX
#  define _POSIX_PATH_MAX 255
# endif

# if !defined(PATH_MAX) && defined(_PC_PATH_MAX)
#  define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 \
		    : pathconf ("/", _PC_PATH_MAX))
# endif

/* Don't include sys/param.h if it already has been.  */
# if defined(HAVE_SYS_PARAM_H) && !defined(PATH_MAX) && !defined(MAXPATHLEN)
#  include <sys/param.h>
# endif

# if !defined(PATH_MAX) && defined(MAXPATHLEN)
#  define PATH_MAX MAXPATHLEN
# endif

# ifndef PATH_MAX
#  define PATH_MAX _POSIX_PATH_MAX
# endif

#endif /* _PATHMAX_H */