1dnl Wget-specific Autoconf macros.
2dnl Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3dnl 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
4
5dnl This program is free software; you can redistribute it and/or modify
6dnl it under the terms of the GNU General Public License as published by
7dnl the Free Software Foundation; either version 3 of the License, or
8dnl (at your option) any later version.
9
10dnl This program is distributed in the hope that it will be useful,
11dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
12dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13dnl GNU General Public License for more details.
14
15dnl You should have received a copy of the GNU General Public License
16dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
17
18dnl Additional permission under GNU GPL version 3 section 7
19
20dnl If you modify this program, or any covered work, by linking or
21dnl combining it with the OpenSSL project's OpenSSL library (or a
22dnl modified version of that library), containing parts covered by the
23dnl terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
24dnl grants you additional permission to convey the resulting work.
25dnl Corresponding Source for a non-source form of such a combination
26dnl shall include the source code for the parts of OpenSSL used as well
27dnl as that of the covered work.
28
29dnl
30dnl Check for `struct utimbuf'.
31dnl
32
33AC_DEFUN([WGET_STRUCT_UTIMBUF], [
34  AC_CHECK_TYPES([struct utimbuf], [], [], [
35#include <stdio.h>
36#if HAVE_SYS_TYPES_H
37# include <sys/types.h>
38#endif
39#if HAVE_UTIME_H
40# include <utime.h>
41#endif
42  ])
43])
44
45
46dnl Check for socklen_t.  The third argument of accept, getsockname,
47dnl etc. is int * on some systems, but size_t * on others.  POSIX
48dnl finally standardized on socklen_t, but older systems don't have
49dnl it.  If socklen_t exists, we use it, else if accept() accepts
50dnl size_t *, we use that, else we use int.
51
52AC_DEFUN([WGET_SOCKLEN_T], [
53  AC_MSG_CHECKING(for socklen_t)
54  AC_COMPILE_IFELSE([
55#include <sys/types.h>
56#include <sys/socket.h>
57socklen_t x;
58  ], [AC_MSG_RESULT(socklen_t)], [
59    AC_COMPILE_IFELSE([
60#include <sys/types.h>
61#include <sys/socket.h>
62int accept (int, struct sockaddr *, size_t *);
63    ], [
64      AC_MSG_RESULT(size_t)
65      AC_DEFINE([socklen_t], [size_t],
66                [Define to int or size_t on systems without socklen_t.])
67    ], [
68      AC_MSG_RESULT(int)
69      AC_DEFINE([socklen_t], [int],
70                [Define to int or size_t on systems without socklen_t.])
71    ])
72  ])
73])
74
75dnl Check whether fnmatch.h can be included.  This doesn't use
76dnl AC_FUNC_FNMATCH because Wget is already careful to only use
77dnl fnmatch on certain OS'es.  However, fnmatch.h is sometimes broken
78dnl even on those because Apache installs its own fnmatch.h to
79dnl /usr/local/include (!), which GCC uses before /usr/include.
80
81AC_DEFUN([WGET_FNMATCH], [
82  AC_MSG_CHECKING([for working fnmatch.h])
83  AC_COMPILE_IFELSE([#include <fnmatch.h>
84                    ], [
85    AC_MSG_RESULT(yes)
86    AC_DEFINE([HAVE_WORKING_FNMATCH_H], 1,
87              [Define if fnmatch.h can be included.])
88  ], [
89    AC_MSG_RESULT(no)
90  ])
91])
92
93dnl Check for nanosleep.  For nanosleep to work on Solaris, we must
94dnl link with -lrt (recently) or with -lposix4 (older releases).
95
96AC_DEFUN([WGET_NANOSLEEP], [
97  AC_CHECK_FUNCS(nanosleep, [], [
98    AC_CHECK_LIB(rt, nanosleep, [
99      AC_DEFINE([HAVE_NANOSLEEP], 1,
100                [Define if you have the nanosleep function.])
101      LIBS="-lrt $LIBS"
102    ], [
103      AC_CHECK_LIB(posix4, nanosleep, [
104	AC_DEFINE([HAVE_NANOSLEEP], 1,
105		  [Define if you have the nanosleep function.])
106	LIBS="-lposix4 $LIBS"
107      ])
108    ])
109  ])
110])
111
112AC_DEFUN([WGET_POSIX_CLOCK], [
113  AC_CHECK_FUNCS(clock_gettime, [], [
114    AC_CHECK_LIB(rt, clock_gettime)
115  ])
116])
117
118dnl Check whether we need to link with -lnsl and -lsocket, as is the
119dnl case on e.g. Solaris.
120
121AC_DEFUN([WGET_NSL_SOCKET], [
122  dnl On Solaris, -lnsl is needed to use gethostbyname.  But checking
123  dnl for gethostbyname is not enough because on "NCR MP-RAS 3.0"
124  dnl gethostbyname is in libc, but -lnsl is still needed to use
125  dnl -lsocket, as well as for functions such as inet_ntoa.  We look
126  dnl for such known offenders and if one of them is not found, we
127  dnl check if -lnsl is needed.
128  wget_check_in_nsl=NONE
129  AC_CHECK_FUNCS(gethostbyname, [], [
130    wget_check_in_nsl=gethostbyname
131  ])
132  AC_CHECK_FUNCS(inet_ntoa, [], [
133    wget_check_in_nsl=inet_ntoa
134  ])
135  if test $wget_check_in_nsl != NONE; then
136    AC_CHECK_LIB(nsl, $wget_check_in_nsl)
137  fi
138  AC_CHECK_LIB(socket, socket)
139])
140
141
142dnl ************************************************************
143dnl START OF IPv6 AUTOCONFIGURATION SUPPORT MACROS
144dnl ************************************************************
145
146AC_DEFUN([TYPE_STRUCT_SOCKADDR_IN6],[
147  wget_have_sockaddr_in6=
148  AC_CHECK_TYPES([struct sockaddr_in6],[
149    wget_have_sockaddr_in6=yes
150  ],[
151    wget_have_sockaddr_in6=no
152  ],[
153#include <sys/types.h>
154#include <sys/socket.h>
155#include <netinet/in.h>
156  ])
157
158  if test "X$wget_have_sockaddr_in6" = "Xyes"; then :
159    $1
160  else :
161    $2
162  fi
163])
164
165
166AC_DEFUN([MEMBER_SIN6_SCOPE_ID],[
167  AC_REQUIRE([TYPE_STRUCT_SOCKADDR_IN6])
168
169  wget_member_sin6_scope_id=
170  if test "X$wget_have_sockaddr_in6" = "Xyes"; then
171    AC_CHECK_MEMBER([struct sockaddr_in6.sin6_scope_id],[
172      wget_member_sin6_scope_id=yes
173    ],[
174      wget_member_sin6_scope_id=no
175    ],[
176#include <sys/types.h>
177#include <sys/socket.h>
178#include <netinet/in.h>
179    ])
180  fi
181
182  if test "X$wget_member_sin6_scope_id" = "Xyes"; then
183    AC_DEFINE([HAVE_SOCKADDR_IN6_SCOPE_ID], 1,
184      [Define if struct sockaddr_in6 has the sin6_scope_id member])
185    $1
186  else :
187    $2
188  fi
189])
190
191
192AC_DEFUN([PROTO_INET6],[
193  AC_CACHE_CHECK([for INET6 protocol support], [wget_cv_proto_inet6],[
194    AC_TRY_CPP([
195#include <sys/types.h>
196#include <sys/socket.h>
197
198#ifndef PF_INET6
199#error Missing PF_INET6
200#endif
201#ifndef AF_INET6
202#error Mlssing AF_INET6
203#endif
204    ],[
205      wget_cv_proto_inet6=yes
206    ],[
207      wget_cv_proto_inet6=no
208    ])
209  ])
210
211  if test "X$wget_cv_proto_inet6" = "Xyes"; then :
212    $1
213  else :
214    $2
215  fi
216])
217
218
219AC_DEFUN([WGET_STRUCT_SOCKADDR_STORAGE],[
220  AC_CHECK_TYPES([struct sockaddr_storage],[], [], [
221#include <sys/types.h>
222#include <sys/socket.h>
223  ])
224])
225
226dnl ************************************************************
227dnl END OF IPv6 AUTOCONFIGURATION SUPPORT MACROS
228dnl ************************************************************
229
230dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
231dnl   TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
232AC_DEFUN([AM_PATH_PROG_WITH_TEST],
233[# Extract the first word of "$2", so it can be a program name with args.
234set dummy $2; ac_word=[$]2
235AC_MSG_CHECKING([for $ac_word])
236AC_CACHE_VAL(ac_cv_path_$1,
237[case "[$]$1" in
238  /*)
239  ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
240  ;;
241  *)
242  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
243  for ac_dir in ifelse([$5], , $PATH, [$5]); do
244    test -z "$ac_dir" && ac_dir=.
245    if test -f $ac_dir/$ac_word; then
246      if [$3]; then
247	ac_cv_path_$1="$ac_dir/$ac_word"
248	break
249      fi
250    fi
251  done
252  IFS="$ac_save_ifs"
253dnl If no 4th arg is given, leave the cache variable unset,
254dnl so AC_PATH_PROGS will keep looking.
255ifelse([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
256])dnl
257  ;;
258esac])dnl
259$1="$ac_cv_path_$1"
260if test -n "[$]$1"; then
261  AC_MSG_RESULT([$]$1)
262else
263  AC_MSG_RESULT(no)
264fi
265AC_SUBST($1)dnl
266])
267
268