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
|
# pty.m4 serial 1
dnl Copyright (C) 2009, 2010 Free Software Foundation, 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.
# gl_PTY
# ------
# Make sure that pty.h provides forkpty, or sets up a replacement header.
# Also define automake variable PTY_LIB to the library needed (if any).
AC_DEFUN([gl_PTY],
[
PTY_H=''
PTY_LIB=''
# First make sure that pty.h provides forkpty, or setup the replacement.
AC_CHECK_HEADERS_ONCE([pty.h])
if test $ac_cv_header_pty_h != yes; then
AC_CHECK_DECL([forkpty],,, [[#include <util.h>]])
if test $ac_cv_have_decl_forkpty = no; then
AC_CHECK_DECL([forkpty],,, [[#include <libutil.h>]])
if test $ac_cv_have_decl_forkpty = no; then
AC_MSG_WARN([[Cannot find forkpty, build will likely fail]])
else
PTY_H='pty.h'
PTY_HEADER='libutil.h'
fi
else
PTY_H='pty.h'
PTY_HEADER='util.h'
fi
fi
# Second check for the library required for forkpty.
save_LIBS="$LIBS"
AC_SEARCH_LIBS([forkpty], [util],
[if test "$ac_cv_search_forkpty" != "none required"; then
PTY_LIB="$ac_cv_search_forkpty"
fi])
LIBS="$save_LIBS"
AC_SUBST([PTY_H])
AC_SUBST([PTY_LIB])
AC_SUBST([PTY_HEADER])
])
|
