1 dnl Process this file with autoconf to produce a configure script.
3 dnl This file is part of secnet.
4 dnl See README for full list of copyright holders.
6 dnl secnet is free software; you can redistribute it and/or modify it
7 dnl under the terms of the GNU General Public License as published by
8 dnl the Free Software Foundation; either version 3 of the License, or
9 dnl (at your option) any later version.
11 dnl secnet is distributed in the hope that it will be useful, but
12 dnl WITHOUT ANY WARRANTY; without even the implied warranty of
13 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 dnl General Public License for more details.
16 dnl You should have received a copy of the GNU General Public License
17 dnl version 3 along with secnet; if not, see
18 dnl https://www.gnu.org/licenses/gpl.html.
20 sinclude(ac_prog_cc_no_writeable_strings.m4)
22 m4_include(subdirmk/subdirmk.ac)
24 AC_INIT(secnet,0.1.18+,secnet@chiark.greenend.org.uk)
25 AC_CONFIG_SRCDIR(secnet.c)
26 AC_CONFIG_HEADER(config.h)
28 SUBDIRMK_SUBDIRS([test-example mtest stest base91s])
31 AC_REVISION($Id: configure.in,v 1.4 2002/09/09 22:05:02 steve Exp $)
35 # If fink is on the path then it is assumed we should use it.
36 AC_PATH_PROG([FINK],[fink])
37 if test "x$FINK" != x; then
38 finkdir=`echo $FINK|sed 's,/[[^/]]*/[[^/]]*$,,'`
39 CPPFLAGS="-I$finkdir/include ${CPPFLAGS}"
40 LDFLAGS="-L$finkdir/lib ${LDFLAGS}"
43 # This is quite unpleasant. It turns out that most header checking
44 # macros call AC_INCLUDES_DEFAULT. By default AC_INCLUDES_DEFAULT
45 # implies AC_HEADER_STDC and a bunch of conditional includes. But
46 # these header checks are obsolete as the documentation for
47 # AC_HEADER_STDC says. Instead, define AC_INCLUDES_DEFAULT ourselves.
48 # The list of headers below is the list from `(autoconf) Default
49 # Includes' (filtered by hand for the modern ones rather than the
50 # fallbacks). We must include $1 because AC_INCLUDES_DEFAULT is
51 # called with an argument giving the check-specific haders.
52 m4_define([AC_INCLUDES_DEFAULT],[
53 # include <sys/types.h>
54 # include <sys/stat.h>
58 # include <inttypes.h>
67 AC_CHECK_HEADERS([net/if.h net/route.h])
68 AC_CHECK_HEADERS([sys/socket.h])
69 AC_CHECK_HEADERS([linux/if_tun.h], [], [],
70 [#if HAVE_SYS_SOCKET_H
71 # include <sys/socket.h>
74 AC_CHECK_HEADERS([stropts.h sys/sockio.h net/if_tun.h])
76 AC_PROG_CC_NO_WRITEABLE_STRINGS(WRITESTRINGS)
78 AC_ARG_ENABLE(hacky-parallel,
79 [AS_HELP_STRING([--enable-hacky-parallel],
80 [parallelise slow cryptography (default is no)])], [
83 y|1|yes) CFLAGS="$CFLAGS -DHACKY_PARALLEL" ;;
88 AC_DEFUN([REQUIRE_HEADER],[AC_CHECK_HEADER($1,,[AC_MSG_ERROR($1 not found)])])
90 dnl the order in which libraries is checked is important
91 dnl eg. adns on Solaris 2.5.1 depends on -lnsl and -lsocket
92 AC_CHECK_LIB(gmp,mpz_init_set_str)
93 AC_CHECK_LIB(gmp2,mpz_init_set_str)
94 AC_CHECK_LIB(gmp,__gmpz_init_set_str)
95 REQUIRE_HEADER([gmp.h])
96 dnl Would love to barf if no gmp was found, but how to test? Requiring the header will do for now.
97 SECNET_C_GETFUNC(inet_ntoa,nsl)
98 AC_CHECK_LIB(socket,socket)
99 SECNET_C_GETFUNC(inet_aton,resolv)
100 AC_CHECK_LIB(adns,adns_init)
101 REQUIRE_HEADER([adns.h])
103 AC_CHECK_FUNCS([fmemopen funopen])
105 AC_MSG_NOTICE([Checking requirements for IPv6 support...])
107 m4_define(NO_IPV6,[enable_ipv6=false])
108 AC_CHECK_DECL(AF_INET6, [],[NO_IPV6],[#include <netinet/in.h>])
109 AC_CHECK_FUNC(adns_addr2text, [],[NO_IPV6])
110 if $enable_ipv6; then
111 AC_MSG_NOTICE([Enabling IPv6 support])
112 AC_DEFINE(CONFIG_IPV6, 1,
113 [Define to 1 to use IPv6 support in system and adns])
115 AC_MSG_WARN([Disabling IPv6 support])
118 SUBDIRMK_MAKEFILES(common.make)
121 echo timestamp >config.stamp)
131 /* These used to be in config.h.bot, but are now in configure.in. */
134 #define NORETURN(_x) void _x __attribute__ ((noreturn))
135 #define FORMAT(_a,_b,_c) __attribute__ ((format (_a,_b,_c)))
137 #define NORETURN(_x) _x
138 #define FORMAT(_a,_b,_c)
141 #endif /* _CONFIG_H */