X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=configure.ac;h=674ed3642da6ef96a0e5cd27b171fef83af451fa;hb=49b56eafcd147185c28848a7c04e31a32c49a82e;hp=88516fbacb3c26a5d1a1f2d811052f83f110cb7e;hpb=3452ae1eb73cdb736765fd0d60e225ec2179c237;p=secnet.git

diff --git a/configure.ac b/configure.ac
index 88516fb..674ed36 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,24 +1,142 @@
-dnl -*-autoconf-*-
-dnl subdirmk example - configuration script
-dnl  Copyright 2019 Mark Wooding
-dnl  Copyright 2019 Ian Jackson
-dnl SPDX-License-Identifier: LGPL-2.0-or-later
+dnl Process this file with autoconf to produce a configure script.
 
-AC_INIT([mktoy], [0.9.0], [mdw@distorted.org.uk])
-AC_CONFIG_SRCDIR([src/toy.c])
-AC_CONFIG_AUX_DIR([build-aux])
+dnl This file is part of secnet.
+dnl See README for full list of copyright holders.
+dnl
+dnl secnet is free software; you can redistribute it and/or modify it
+dnl under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 3 of the License, or
+dnl (at your option) any later version.
+dnl 
+dnl secnet is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+dnl General Public License for more details.
+dnl 
+dnl You should have received a copy of the GNU General Public License
+dnl version 3 along with secnet; if not, see
+dnl https://www.gnu.org/licenses/gpl.html.
 
-AC_PROG_INSTALL
+sinclude(ac_prog_cc_no_writeable_strings.m4)
+
+m4_include(subdirmk/subdirmk.ac)
+
+AC_INIT(secnet,0.1.18+,secnet@chiark.greenend.org.uk)
+AC_CONFIG_SRCDIR(secnet.c)
+AC_CONFIG_HEADER(config.h)
+
+SUBDIRMK_SUBDIRS([test-example mtest stest base91s])
+
+AC_PREREQ(2.50)
+AC_REVISION($Id: configure.in,v 1.4 2002/09/09 22:05:02 steve Exp $)
 
+AC_LANG_C
+
+# If fink is on the path then it is assumed we should use it.
+AC_PATH_PROG([FINK],[fink])
+if test "x$FINK" != x; then
+  finkdir=`echo $FINK|sed 's,/[[^/]]*/[[^/]]*$,,'`
+  CPPFLAGS="-I$finkdir/include ${CPPFLAGS}"
+  LDFLAGS="-L$finkdir/lib ${LDFLAGS}"
+fi
+
+# This is quite unpleasant.  It turns out that most header checking
+# macros call AC_INCLUDES_DEFAULT.  By default AC_INCLUDES_DEFAULT
+# implies AC_HEADER_STDC and a bunch of conditional includes.  But
+# these header checks are obsolete as the documentation for
+# AC_HEADER_STDC says.  Instead, define AC_INCLUDES_DEFAULT ourselves.
+# The list of headers below is the list from `(autoconf) Default
+# Includes' (filtered by hand for the modern ones rather than the
+# fallbacks).  We must include $1 because AC_INCLUDES_DEFAULT is
+# called with an argument giving the check-specific haders.
+m4_define([AC_INCLUDES_DEFAULT],[
+          # include <sys/types.h>
+          # include <sys/stat.h>
+          # include <stdlib.h>
+          # include <stddef.h>
+          # include <string.h>
+          # include <inttypes.h>
+          # include <stdint.h>
+          # include <unistd.h>
+$1
+])
+
+AC_PROG_MAKE_SET
 AC_PROG_CC
-INCLUDES=
-AC_SUBST(INCLUDES)
+AC_PROG_INSTALL
+AC_CHECK_HEADERS([net/if.h net/route.h])
+AC_CHECK_HEADERS([sys/socket.h])
+AC_CHECK_HEADERS([linux/if_tun.h], [], [], 
+[#if HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+])
+AC_CHECK_HEADERS([stropts.h sys/sockio.h net/if_tun.h])
+AC_C_BIGENDIAN
+AC_PROG_CC_NO_WRITEABLE_STRINGS(WRITESTRINGS)
+
+AC_ARG_ENABLE(hacky-parallel,
+  [AS_HELP_STRING([--enable-hacky-parallel],
+                  [parallelise slow cryptography (default is no)])], [
+  case "$enableval" in
+  n|0|no) ;;
+  y|1|yes) CFLAGS="$CFLAGS -DHACKY_PARALLEL" ;;
+  *) ;;
+  esac
+])
+
+AC_DEFUN([REQUIRE_HEADER],[AC_CHECK_HEADER($1,,[AC_MSG_ERROR($1 not found)])])
+
+dnl the order in which libraries is checked is important
+dnl eg. adns on Solaris 2.5.1 depends on -lnsl and -lsocket
+AC_CHECK_LIB(gmp,mpz_init_set_str)
+AC_CHECK_LIB(gmp2,mpz_init_set_str)
+AC_CHECK_LIB(gmp,__gmpz_init_set_str)
+REQUIRE_HEADER([gmp.h])
+dnl Would love to barf if no gmp was found, but how to test? Requiring the header will do for now.
+SECNET_C_GETFUNC(inet_ntoa,nsl)
+AC_CHECK_LIB(socket,socket)
+SECNET_C_GETFUNC(inet_aton,resolv)
+AC_CHECK_LIB(adns,adns_init)
+REQUIRE_HEADER([adns.h])
+
+AC_CHECK_FUNCS([fmemopen funopen])
+
+AC_MSG_NOTICE([Checking requirements for IPv6 support...])
+enable_ipv6=true
+m4_define(NO_IPV6,[enable_ipv6=false])
+AC_CHECK_DECL(AF_INET6,        [],[NO_IPV6],[#include <netinet/in.h>])
+AC_CHECK_FUNC(adns_addr2text,  [],[NO_IPV6])
+if $enable_ipv6; then
+    AC_MSG_NOTICE([Enabling IPv6 support])
+    AC_DEFINE(CONFIG_IPV6, 1,
+              [Define to 1 to use IPv6 support in system and adns])
+else
+    AC_MSG_WARN([Disabling IPv6 support])
+fi
+
+SUBDIRMK_MAKEFILES(common.make)
+
+AC_OUTPUT(,
+          echo timestamp >config.stamp)
+
+AH_TOP([
+#ifndef _CONFIG_H
+#define _CONFIG_H
+])
 
-m4_include([subdirmk/subdirmk.ac])
+AH_BOTTOM([
+/* -*- c -*- */
 
-SUBDIRMK_SUBDIRS([lib])
-SUBDIRMK_SUBDIRS([lib/t src])
+/* These used to be in config.h.bot, but are now in configure.in. */
 
-AC_OUTPUT
+#ifdef __GNUC__
+#define NORETURN(_x) void _x __attribute__ ((noreturn))
+#define FORMAT(_a,_b,_c) __attribute__ ((format (_a,_b,_c)))
+#else
+#define NORETURN(_x) _x
+#define FORMAT(_a,_b,_c)
+#endif
 
-dnl----- That's all, folks --------------------------------------------------
+#endif /* _CONFIG_H */
+])