summaryrefslogtreecommitdiff
path: root/m4/pathmax.m4
blob: 0770aca3aac7e4ffc0fe9598ad38dc087c5d7ea8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
# pathmax.m4 serial 11
dnl Copyright (C) 2002-2003, 2005-2006, 2009-2019 Free Software Foundation,
dnl Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_PATHMAX],
[
  dnl Prerequisites of lib/pathmax.h.
  AC_CHECK_HEADERS_ONCE([sys/param.h])
])

# Expands to a piece of C program that defines PATH_MAX in the same way as
# "pathmax.h" will do.
AC_DEFUN([gl_PATHMAX_SNIPPET], [[
/* Arrange to define PATH_MAX, like "pathmax.h" does. */
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <limits.h>
#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
#ifdef __hpux
# undef PATH_MAX
# define PATH_MAX 1024
#endif
#if defined _WIN32 && ! defined __CYGWIN__
# undef PATH_MAX
# define PATH_MAX 260
#endif
]])

# Prerequisites of gl_PATHMAX_SNIPPET.
AC_DEFUN([gl_PATHMAX_SNIPPET_PREREQ],
[
  AC_CHECK_HEADERS_ONCE([unistd.h sys/param.h])
])