gvpe/configure.ac

dnl Process this file with autoconf to produce a configure script.

AC_PREREQ(2.59)
AC_INIT
AC_CONFIG_SRCDIR([src/gvpe.C])
AC_CANONICAL_TARGET
AM_INIT_AUTOMAKE(gvpe, 2.0)
AC_CONFIG_HEADERS([config.h])
AM_MAINTAINER_MODE

AH_TOP([
#ifndef CONFIG_H__
#define CONFIG_H__

#ifdef __cplusplus
   using namespace std;
#endif

])

AH_BOTTOM([
typedef unsigned char u8;
typedef signed char s8;

#if __CYGWIN__

typedef unsigned short u16;
typedef unsigned int u32;
typedef signed short s16;
typedef signed int s32;

#else
#include <inttypes.h>

/* old modula-2 habits */
typedef uint16_t u16;
typedef uint32_t u32;
typedef int16_t s16;
typedef int32_t s32;
#endif

#endif

#if HAVE_CLOCALE
# define CLOCALE <clocale>
#else
# define CLOCALE <locale.h>
#endif
])

dnl Include the macros from the m4/ directory
AM_ACLOCAL_INCLUDE(m4)

AM_GNU_GETTEXT([external])
AM_GNU_GETTEXT_VERSION(0.11.5)

# Enable GNU extensions.
# Define this here, not in acconfig's @TOP@ section, since definitions
# in the latter don't make it into the configure-time tests.
AC_DEFINE([_GNU_SOURCE], 1, [Enable GNU extensions])

# do NOT define POSIX_SOURCE, sicne this clashes with many BSDs
dnl AC_DEFINE([_POSIX_SOURCE], 1, [Enable POSIX 1003.1 extensions])
dnl AC_DEFINE([_XOPEN_SOURCE], 500, [Enable XOPEN extensions])

ALL_LINGUAS=""

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CPP
AC_PROG_CXX
AC_PROG_GCC_TRADITIONAL
AC_PROG_AWK
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_RANLIB

AC_ARG_ENABLE(iftype,
  [AS_HELP_STRING(--enable-iftype=TYPE/SUBTYPE,
     Use kernel/net device interface TYPE/SUBTYPE.
     Working combinations are (see doc/gvpe.osdep.5.pod):
        "native/linux"
        "tincd/linux"
        "tincd/netbsd"
        "tincd/freebsd"
        "tincd/openbsd"
        "native/darwin"
        "tincd/darwin"
        "native/cygwin";
     Untested combinations are:
        "tincd/bsd"
        "tincd/solaris"
        "tincd/mingw"
        "tincd/raw_socket"
        "tincd/uml_socket";
     Broken combinations are:
        "tincd/cygwin";
     The default is to autodetect.
  )],
  [
    IFTYPE=`echo $enableval | sed s%/.*%%`
    IFSUBTYPE=`echo $enableval | sed s%.*/%%`
  ]
)

dnl Check and set OS
AC_MSG_CHECKING(for kernel networking interface type)

if test "x$IFTYPE" = "x"; then
   case $target_os in
     *linux*)
       IFTYPE=native
       IFSUBTYPE=linux
       AC_DEFINE(HAVE_LINUX, 1, [Linux])
     ;;
     *freebsd*)
       IFTYPE=tincd
       IFSUBTYPE=freebsd
       AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
     ;;
     *darwin*)
       IFTYPE=native
       IFSUBTYPE=darwin
       AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
     ;;
     *solaris*)
       IFTYPE=tincd
       IFSUBTYPE=solaris
       AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
     ;;
     *openbsd*)
       IFTYPE=tincd
       IFSUBTYPE=openbsd
       AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
     ;;
     *netbsd*)
       IFTYPE=tincd
       IFSUBTYPE=netbsd
       AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
     ;;
     *cygwin*)
       IFTYPE=native
       IFSUBTYPE=cygwin
       AC_DEFINE(HAVE_CYGWIN, 1, [Cygwin])
     ;;
     *)
       AC_MSG_ERROR("Unknown operating system.")
     ;;
   esac
fi
AC_MSG_RESULT($IFTYPE/$IFSUBTYPE)
AC_SUBST(IFTYPE,$IFTYPE)
AC_SUBST(IFSUBTYPE,$IFSUBTYPE)
AC_DEFINE_UNQUOTED(IFTYPE,"$IFTYPE",[kernel interface type])
AC_DEFINE_UNQUOTED(IFSUBTYPE,"$IFSUBTYPE",[kernel interface subtype])

AC_CACHE_SAVE

dnl Checks for libraries.

AC_LANG(C++)
AC_CHECK_HEADERS(ext/hash_map clocale)

dnl Checks for header files.
AC_CHECK_HEADERS([fcntl.h inttypes.h limits.h malloc.h stdint.h strings.h syslog.h unistd.h \
        sys/file.h sys/ioctl.h sys/param.h sys/time.h netinet/in_systm.h sys/cygwin.h \
        sys/mman.h netinet/in.h])
AC_CHECK_HEADERS([arpa/inet.h net/ethernet.h net/if.h netinet/ip.h netinet/tcp.h netinet/in_systm.h], [], [],
[
#include <sys/types.h>
#include <sys/socket.h>
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_NETINET_IN_SYSTM_H
# include <netinet/in_systm.h>
#endif
])

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_HEADER_TIME
AC_STRUCT_TM

AC_CACHE_CHECK([for socklen_t], ac_cv_type_socklen_t,
[
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
  #include <sys/socket.h>]], [[socklen_t len = 42; return len;]])],[ac_cv_type_socklen_t=yes],[ac_cv_type_socklen_t=no])
])
if test $ac_cv_type_socklen_t = yes; then
  AC_DEFINE(HAVE_SOCKLEN_T, 1, [socklen_t available])
fi

AC_CACHE_CHECK([for struct addrinfo], ac_cv_struct_addrinfo,
[
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
  #include <sys/socket.h>
  #include <netdb.h>]], [[struct addrinfo ai; ai.ai_family = AF_INET; return ai.ai_family;]])],[ac_cv_struct_addrinfo=yes],[ac_cv_struct_addrinfo=no])
])
if test $ac_cv_struct_addrinfo = yes; then
  AC_DEFINE(HAVE_STRUCT_ADDRINFO, 1, [struct addrinfo available])
fi

dnl Checks for library functions.
AC_TYPE_SIGNAL

AC_LANG_PUSH(C)

AC_HEADER_STDC

dnl argl, could somebody catapult darwin into the 21st century???
AC_CHECK_FUNCS(asprintf daemon get_current_dir_name putenv select strerror strsignal strtol unsetenv mlockall)

AC_FUNC_ALLOCA

dnl Support for SunOS

AC_CHECK_FUNC(socket, [], [
  AC_CHECK_LIB(socket, connect)
])
AC_CHECK_FUNC(gethostbyname, [], [
  AC_CHECK_LIB(nsl, gethostbyname)
])

AC_LANG_POP

dnl AC_CHECK_FUNCS([freeaddrinfo gai_strerror getaddrinfo getnameinfo])

AC_CACHE_SAVE

dnl These are defined in files in m4/
tinc_TUNTAP

tinc_OPENSSL
if test "x$openssl_include" != x; then
   CXXFLAGS="$CXXFLAGS -I$openssl_include"
fi
dnl tinc_ZLIB

AC_ARG_ENABLE(static-daemon,
  [AS_HELP_STRING(--enable-static-daemon,enable statically linked daemon.)],
  [LDFLAGS_DAEMON=-static]
)
AC_SUBST(LDFLAGS_DAEMON)

AC_ARG_ENABLE(rohc,
  [AS_HELP_STRING(--enable-rohc,enable robust header compression (rfc3095).)],
  [
  echo
  echo "**********************************************************************"
  echo "**********************************************************************"
  echo "**** --enable-rohc is highly experimental, do not use ****************"
  echo "**********************************************************************"
  echo "**********************************************************************"
  echo
  rohc=true
  AC_DEFINE_UNQUOTED(ENABLE_ROHC, 1, [ROHC support])
  ]
)

AM_CONDITIONAL(ROHC, test x$rohc = xtrue)

dnl AC_ARG_ENABLE(bridging,
dnl   [AS_HELP_STRING(--enable-bridging,enable bridging support (default disabled).)],
dnl   AC_DEFINE_UNQUOTED(ENABLE_BRIDGING, 1, [bridging support.])
dnl )

AC_ARG_ENABLE(icmp,
  [AS_HELP_STRING(--enable-icmp,enable icmp protocol support (default disabled).)],
  AC_DEFINE_UNQUOTED(ENABLE_ICMP, 1, [ICMP protocol support.])
)

AC_ARG_ENABLE(tcp,
  [AS_HELP_STRING(--enable-tcp,enable tcp protocol support (default disabled).)],
  AC_DEFINE_UNQUOTED(ENABLE_TCP, 1, [TCP protocol support.])
)

AC_ARG_ENABLE(dns,
  [AS_HELP_STRING(--enable-dns,enable dns tunnel protocol support (DOES NOT WORK).)],
  [
    AC_CHECK_HEADER(gmp.h,,[AC_MSG_ERROR([gmp.h not found, required for --enable-dns])])
    AC_CHECK_LIB(gmp,main,,[AC_MSG_ERROR([libgmp not found, required for --enable-dns])])

    AC_DEFINE_UNQUOTED(ENABLE_DNS, 1, [DNS tunnel protocol support.])
  ]
)

AC_ARG_ENABLE(http-proxy,
  [AS_HELP_STRING(--enable-http-proxy,enable http proxy connect support (default disabled).)],
  AC_DEFINE_UNQUOTED(ENABLE_HTTP_PROXY, 1, [http proxy connect support.])
)

HMAC=12
AC_ARG_ENABLE(hmac-length,
  [AS_HELP_STRING(--enable-hmac-length=BYTES,[
      use a hmac of length BYTES bytes (default 12). Allowed values are 4, 8, 12, 16.])],
  HMAC=$enableval
)
AC_DEFINE_UNQUOTED(HMACLENGTH, $HMAC, [Size of HMAC in each packet in bytes.])

RAND=8
AC_ARG_ENABLE(rand-length,
  [AS_HELP_STRING(--enable-rand-length=BYTES,
      [use BYTES bytes of extra randomness (default 8). Allowed values are 0, 4, 8.])],
  RAND=$enableval
)
AC_DEFINE_UNQUOTED(RAND_SIZE, $RAND, [Add this many bytes of randomness to each packet.])

MTU=1500
AC_ARG_ENABLE(mtu,
  [AS_HELP_STRING(--enable-max-mtu=BYTES,enable mtu sizes upto BYTES bytes (default 1500). Use 9100 for jumbogram support.)],
  MTU=$enableval
)
AC_DEFINE_UNQUOTED(MAX_MTU, $MTU + 14, [Maximum MTU supported.])

COMPRESS=1
AC_ARG_ENABLE(compression,
  [AS_HELP_STRING(--disable-compression,Disable compression support.)],
  if test "x$enableval" = xno; then
     COMPRESS=0
  fi
)
AC_DEFINE_UNQUOTED(ENABLE_COMPRESSION, $COMPRESS, [Enable compression support.])

CIPHER=aes_128_cbc
AC_ARG_ENABLE(cipher,
  [AS_HELP_STRING(--enable-cipher,[
      Select the symmetric cipher (default "aes-128").
      Must be one of "bf" (blowfish), "aes-128" (rijndael), "aes-192" or "aes-256".])],
  if test "x$enableval" = xbf     ; then CIPHER=bf_cbc     ; fi
  if test "x$enableval" = xaes-128; then CIPHER=aes_128_cbc; fi
  if test "x$enableval" = xaes-192; then CIPHER=aes_192_cbc; fi
  if test "x$enableval" = xaes-256; then CIPHER=aes_256_cbc; fi
)
AC_DEFINE_UNQUOTED(ENABLE_CIPHER, EVP_${CIPHER}, [Select the symmetric cipher to use.])

DIGEST=ripemd160
AC_ARG_ENABLE(digest,
  [AS_HELP_STRING(--enable-digest,[
      Select the digets algorithm to use (default "ripemd160"). Must be one of
      "sha1", "ripemd160", "md5" or "md4" (insecure).])],
  if test "x$enableval" = xsha1     ; then DIGEST=sha1     ; fi
  if test "x$enableval" = xripemd160; then DIGEST=ripemd160; fi
  if test "x$enableval" = xmd5      ; then DIGEST=md5      ; fi
  if test "x$enableval" = xmd4      ; then DIGEST=md4      ; fi
)
AC_DEFINE_UNQUOTED(ENABLE_DIGEST, EVP_${DIGEST}, [Select the digest algorithm to use.])

if $CXX -v --help 2>&1 | grep -q fno-rtti; then
   CXXFLAGS="$CXXFLAGS -fno-rtti"
fi

if $CXX -v --help 2>&1 | grep -q fexceptions; then
   CXXFLAGS="$CXXFLAGS -fno-exceptions"
fi

dnl if $CXX -v --help 2>&1 | grep -q ffunction-sections; then
dnl    CXXFLAGS="$CXXFLAGS -ffunction-sections"
dnl fi
dnl 
dnl if $LD -v --help 2>&1 | grep -q gc-sections; then
dnl    LDFLAGS="$LDFLAGS -Wl,--gc-sections"
dnl fi

AC_SUBST(INCLUDES)

AC_CONFIG_FILES([Makefile po/Makefile.in
src/Makefile
doc/Makefile
lib/Makefile
m4/Makefile
])
AC_OUTPUT

echo
echo "***"
echo "*** Configuration Summary"
echo "***"
echo "*** Kernel Iface: $IFTYPE/$IFSUBTYPE"
echo "*** Cipher used:  $CIPHER"
echo "*** Digest used:  $DIGEST"
echo "*** HMAC length:  $HMAC"
echo "*** RAND used:    $RAND"
echo "*** Max. MTU:     $MTU"

echo "***"
echo "*** Enable options:"
grep ENABLE_ config.h | sed -e 's/^/*** /'

if test "x$DIGEST" = xmd4; then
echo "***"
echo "*** WARNING: The digest you have chosen ($DIGEST) is known to be insecure"
fi

if test "$HMAC" -lt 12; then
echo "***"
echo "*** WARNING: The hmac length you have chosen ($HMAC) is probably insecure"
fi

if test "$RAND" -lt 8; then
echo "***"
echo "*** WARNING: The random prefix you have chosen ($RAND) is probably insecure"
fi

echo "***"
echo


Revision:	1.43
Committed:	Mon Dec 5 13:00:15 2005 UTC (18 years, 5 months ago) by pcg
Branch:	MAIN
CVS Tags:	rel-2_0
Changes since 1.42:	+1 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	dnl Process this file with autoconf to produce a configure script.
2
3	pcg	1.28	AC_PREREQ(2.59)
4			AC_INIT
5	pcg	1.37	AC_CONFIG_SRCDIR([src/gvpe.C])
6	pcg	1.1	AC_CANONICAL_TARGET
7	pcg	1.43	AM_INIT_AUTOMAKE(gvpe, 2.0)
8	pcg	1.28	AC_CONFIG_HEADERS([config.h])
9	pcg	1.1	AM_MAINTAINER_MODE
10
11			AH_TOP([
12			#ifndef CONFIG_H__
13			#define CONFIG_H__
14
15			#ifdef __cplusplus
16			using namespace std;
17			#endif
18
19			])
20
21			AH_BOTTOM([
22	pcg	1.33	typedef unsigned char u8;
23			typedef signed char s8;
24
25	pcg	1.1	#if __CYGWIN__
26
27			typedef unsigned short u16;
28			typedef unsigned int u32;
29	pcg	1.33	typedef signed short s16;
30			typedef signed int s32;
31	pcg	1.1
32			#else
33			#include <inttypes.h>
34
35			/* old modula-2 habits */
36			typedef uint16_t u16;
37			typedef uint32_t u32;
38	pcg	1.33	typedef int16_t s16;
39			typedef int32_t s32;
40	pcg	1.1	#endif
41
42			#endif
43	pcg	1.37
44	pcg	1.38	#if HAVE_CLOCALE
45			# define CLOCALE <clocale>
46	pcg	1.37	#else
47	pcg	1.38	# define CLOCALE <locale.h>
48	pcg	1.37	#endif
49	pcg	1.1	])
50
51			dnl Include the macros from the m4/ directory
52			AM_ACLOCAL_INCLUDE(m4)
53
54			AM_GNU_GETTEXT([external])
55			AM_GNU_GETTEXT_VERSION(0.11.5)
56
57			# Enable GNU extensions.
58			# Define this here, not in acconfig's @TOP@ section, since definitions
59			# in the latter don't make it into the configure-time tests.
60	pcg	1.42	AC_DEFINE([_GNU_SOURCE], 1, [Enable GNU extensions])
61	pcg	1.22
62			# do NOT define POSIX_SOURCE, sicne this clashes with many BSDs
63			dnl AC_DEFINE([_POSIX_SOURCE], 1, [Enable POSIX 1003.1 extensions])
64			dnl AC_DEFINE([_XOPEN_SOURCE], 500, [Enable XOPEN extensions])
65	pcg	1.1
66			ALL_LINGUAS=""
67
68			dnl Checks for programs.
69			AC_PROG_CC
70			AC_PROG_CPP
71			AC_PROG_CXX
72			AC_PROG_GCC_TRADITIONAL
73			AC_PROG_AWK
74			AC_PROG_INSTALL
75			AC_PROG_LN_S
76			AC_PROG_MAKE_SET
77			AC_PROG_RANLIB
78
79	pcg	1.8	AC_ARG_ENABLE(iftype,
80	pcg	1.28	[AS_HELP_STRING(--enable-iftype=TYPE/SUBTYPE,
81	pcg	1.8	Use kernel/net device interface TYPE/SUBTYPE.
82	pcg	1.40	Working combinations are (see doc/gvpe.osdep.5.pod):
83	pcg	1.14	"native/linux"
84			"tincd/linux"
85	pcg	1.40	"tincd/netbsd"
86	pcg	1.16	"tincd/freebsd"
87	pcg	1.17	"tincd/openbsd"
88	pcg	1.40	"native/darwin"
89	pcg	1.18	"tincd/darwin"
90	pcg	1.16	"native/cygwin";
91	pcg	1.8	Untested combinations are:
92	pcg	1.41	"tincd/bsd"
93	pcg	1.14	"tincd/solaris"
94	pcg	1.36	"tincd/mingw"
95			"tincd/raw_socket"
96			"tincd/uml_socket";
97	pcg	1.8	Broken combinations are:
98	pcg	1.14	"tincd/cygwin";
99	pcg	1.9	The default is to autodetect.
100	pcg	1.28	)],
101	pcg	1.8	[
102			IFTYPE=`echo $enableval \| sed s%/.*%%`
103			IFSUBTYPE=`echo $enableval \| sed s%.*/%%`
104			]
105			)
106
107	pcg	1.1	dnl Check and set OS
108	pcg	1.8	AC_MSG_CHECKING(for kernel networking interface type)
109	pcg	1.1
110	pcg	1.8	if test "x$IFTYPE" = "x"; then
111			case $target_os in
112			linux)
113			IFTYPE=native
114			IFSUBTYPE=linux
115			AC_DEFINE(HAVE_LINUX, 1, [Linux])
116			;;
117			freebsd)
118			IFTYPE=tincd
119			IFSUBTYPE=freebsd
120			AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
121			;;
122			darwin)
123	pcg	1.39	IFTYPE=native
124	pcg	1.8	IFSUBTYPE=darwin
125			AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
126			;;
127			solaris)
128			IFTYPE=tincd
129			IFSUBTYPE=solaris
130			AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
131			;;
132			openbsd)
133			IFTYPE=tincd
134			IFSUBTYPE=openbsd
135			AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
136			;;
137			netbsd)
138			IFTYPE=tincd
139			IFSUBTYPE=netbsd
140			AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
141			;;
142			cygwin)
143	pcg	1.15	IFTYPE=native
144	pcg	1.8	IFSUBTYPE=cygwin
145			AC_DEFINE(HAVE_CYGWIN, 1, [Cygwin])
146			;;
147			*)
148			AC_MSG_ERROR("Unknown operating system.")
149			;;
150			esac
151			fi
152			AC_MSG_RESULT($IFTYPE/$IFSUBTYPE)
153			AC_SUBST(IFTYPE,$IFTYPE)
154			AC_SUBST(IFSUBTYPE,$IFSUBTYPE)
155	pcg	1.19	AC_DEFINE_UNQUOTED(IFTYPE,"$IFTYPE",[kernel interface type])
156			AC_DEFINE_UNQUOTED(IFSUBTYPE,"$IFSUBTYPE",[kernel interface subtype])
157	pcg	1.1
158			AC_CACHE_SAVE
159
160			dnl Checks for libraries.
161
162			AC_LANG(C++)
163	pcg	1.37	AC_CHECK_HEADERS(ext/hash_map clocale)
164	pcg	1.1
165			dnl Checks for header files.
166			AC_CHECK_HEADERS([fcntl.h inttypes.h limits.h malloc.h stdint.h strings.h syslog.h unistd.h \
167	pcg	1.22	sys/file.h sys/ioctl.h sys/param.h sys/time.h netinet/in_systm.h sys/cygwin.h \
168	pcg	1.21	sys/mman.h netinet/in.h])
169	pcg	1.22	AC_CHECK_HEADERS([arpa/inet.h net/ethernet.h net/if.h netinet/ip.h netinet/tcp.h netinet/in_systm.h], [], [],
170	pcg	1.8	[
171			#include <sys/types.h>
172			#include <sys/socket.h>
173			#ifdef HAVE_NETINET_IN_H
174			# include <netinet/in.h>
175			#endif
176			#ifdef HAVE_ARPA_INET_H
177			# include <arpa/inet.h>
178			#endif
179			#ifdef HAVE_NETINET_IN_SYSTM_H
180			# include <netinet/in_systm.h>
181			#endif
182			])
183	pcg	1.1
184			dnl Checks for typedefs, structures, and compiler characteristics.
185			AC_C_CONST
186			AC_TYPE_PID_T
187			AC_TYPE_SIZE_T
188			AC_HEADER_TIME
189			AC_STRUCT_TM
190	pcg	1.10
191	pcg	1.1	AC_CACHE_CHECK([for socklen_t], ac_cv_type_socklen_t,
192			[
193	pcg	1.28	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
194			#include <sys/socket.h>]], [[socklen_t len = 42; return len;]])],[ac_cv_type_socklen_t=yes],[ac_cv_type_socklen_t=no])
195	pcg	1.1	])
196			if test $ac_cv_type_socklen_t = yes; then
197			AC_DEFINE(HAVE_SOCKLEN_T, 1, [socklen_t available])
198			fi
199
200			AC_CACHE_CHECK([for struct addrinfo], ac_cv_struct_addrinfo,
201			[
202	pcg	1.28	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
203	pcg	1.1	#include <sys/socket.h>
204	pcg	1.28	#include <netdb.h>]], [[struct addrinfo ai; ai.ai_family = AF_INET; return ai.ai_family;]])],[ac_cv_struct_addrinfo=yes],[ac_cv_struct_addrinfo=no])
205	pcg	1.1	])
206			if test $ac_cv_struct_addrinfo = yes; then
207			AC_DEFINE(HAVE_STRUCT_ADDRINFO, 1, [struct addrinfo available])
208			fi
209
210			dnl Checks for library functions.
211			AC_TYPE_SIGNAL
212
213			AC_LANG_PUSH(C)
214
215			AC_HEADER_STDC
216
217	pcg	1.11	dnl argl, could somebody catapult darwin into the 21st century???
218	pcg	1.21	AC_CHECK_FUNCS(asprintf daemon get_current_dir_name putenv select strerror strsignal strtol unsetenv mlockall)
219	pcg	1.1
220			AC_FUNC_ALLOCA
221
222			dnl Support for SunOS
223
224			AC_CHECK_FUNC(socket, [], [
225			AC_CHECK_LIB(socket, connect)
226			])
227			AC_CHECK_FUNC(gethostbyname, [], [
228			AC_CHECK_LIB(nsl, gethostbyname)
229			])
230
231			AC_LANG_POP
232
233			dnl AC_CHECK_FUNCS([freeaddrinfo gai_strerror getaddrinfo getnameinfo])
234
235			AC_CACHE_SAVE
236
237			dnl These are defined in files in m4/
238			tinc_TUNTAP
239	pcg	1.15
240	pcg	1.1	tinc_OPENSSL
241	pcg	1.15	if test "x$openssl_include" != x; then
242			CXXFLAGS="$CXXFLAGS -I$openssl_include"
243			fi
244	pcg	1.1	dnl tinc_ZLIB
245
246	pcg	1.30	AC_ARG_ENABLE(static-daemon,
247			[AS_HELP_STRING(--enable-static-daemon,enable statically linked daemon.)],
248			[LDFLAGS_DAEMON=-static]
249			)
250			AC_SUBST(LDFLAGS_DAEMON)
251
252	pcg	1.5	AC_ARG_ENABLE(rohc,
253	pcg	1.28	[AS_HELP_STRING(--enable-rohc,enable robust header compression (rfc3095).)],
254	pcg	1.5	[
255			echo
256			echo "**********************************************************************"
257			echo "**********************************************************************"
258	pcg	1.25	echo "** --enable-rohc is highly experimental, do not use **************"
259	pcg	1.5	echo "**********************************************************************"
260			echo "**********************************************************************"
261			echo
262	pcg	1.25	rohc=true
263			AC_DEFINE_UNQUOTED(ENABLE_ROHC, 1, [ROHC support])
264	pcg	1.5	]
265			)
266
267	pcg	1.25	AM_CONDITIONAL(ROHC, test x$rohc = xtrue)
268
269	pcg	1.42	dnl AC_ARG_ENABLE(bridging,
270			dnl [AS_HELP_STRING(--enable-bridging,enable bridging support (default disabled).)],
271			dnl AC_DEFINE_UNQUOTED(ENABLE_BRIDGING, 1, [bridging support.])
272			dnl )
273
274	pcg	1.4	AC_ARG_ENABLE(icmp,
275	pcg	1.28	[AS_HELP_STRING(--enable-icmp,enable icmp protocol support (default disabled).)],
276	pcg	1.4	AC_DEFINE_UNQUOTED(ENABLE_ICMP, 1, [ICMP protocol support.])
277			)
278
279	pcg	1.2	AC_ARG_ENABLE(tcp,
280	pcg	1.28	[AS_HELP_STRING(--enable-tcp,enable tcp protocol support (default disabled).)],
281	pcg	1.2	AC_DEFINE_UNQUOTED(ENABLE_TCP, 1, [TCP protocol support.])
282			)
283
284	pcg	1.26	AC_ARG_ENABLE(dns,
285	pcg	1.28	[AS_HELP_STRING(--enable-dns,enable dns tunnel protocol support (DOES NOT WORK).)],
286	pcg	1.34	[
287			AC_CHECK_HEADER(gmp.h,,[AC_MSG_ERROR([gmp.h not found, required for --enable-dns])])
288			AC_CHECK_LIB(gmp,main,,[AC_MSG_ERROR([libgmp not found, required for --enable-dns])])
289
290			AC_DEFINE_UNQUOTED(ENABLE_DNS, 1, [DNS tunnel protocol support.])
291			]
292	pcg	1.26	)
293
294	pcg	1.3	AC_ARG_ENABLE(http-proxy,
295	pcg	1.28	[AS_HELP_STRING(--enable-http-proxy,enable http proxy connect support (default disabled).)],
296	pcg	1.3	AC_DEFINE_UNQUOTED(ENABLE_HTTP_PROXY, 1, [http proxy connect support.])
297			)
298
299	pcg	1.30	HMAC=12
300	pcg	1.1	AC_ARG_ENABLE(hmac-length,
301	pcg	1.30	[AS_HELP_STRING(--enable-hmac-length=BYTES,[
302			use a hmac of length BYTES bytes (default 12). Allowed values are 4, 8, 12, 16.])],
303	pcg	1.1	HMAC=$enableval
304			)
305			AC_DEFINE_UNQUOTED(HMACLENGTH, $HMAC, [Size of HMAC in each packet in bytes.])
306
307	pcg	1.30	RAND=8
308	pcg	1.1	AC_ARG_ENABLE(rand-length,
309	pcg	1.30	[AS_HELP_STRING(--enable-rand-length=BYTES,
310			[use BYTES bytes of extra randomness (default 8). Allowed values are 0, 4, 8.])],
311	pcg	1.1	RAND=$enableval
312			)
313			AC_DEFINE_UNQUOTED(RAND_SIZE, $RAND, [Add this many bytes of randomness to each packet.])
314
315	pcg	1.30	MTU=1500
316	pcg	1.1	AC_ARG_ENABLE(mtu,
317	pcg	1.28	[AS_HELP_STRING(--enable-max-mtu=BYTES,enable mtu sizes upto BYTES bytes (default 1500). Use 9100 for jumbogram support.)],
318	pcg	1.1	MTU=$enableval
319			)
320			AC_DEFINE_UNQUOTED(MAX_MTU, $MTU + 14, [Maximum MTU supported.])
321
322			COMPRESS=1
323			AC_ARG_ENABLE(compression,
324	pcg	1.28	[AS_HELP_STRING(--disable-compression,Disable compression support.)],
325	pcg	1.1	if test "x$enableval" = xno; then
326			COMPRESS=0
327			fi
328			)
329			AC_DEFINE_UNQUOTED(ENABLE_COMPRESSION, $COMPRESS, [Enable compression support.])
330
331	pcg	1.42	CIPHER=aes_128_cbc
332	pcg	1.1	AC_ARG_ENABLE(cipher,
333	pcg	1.30	[AS_HELP_STRING(--enable-cipher,[
334	pcg	1.42	Select the symmetric cipher (default "aes-128").
335	pcg	1.30	Must be one of "bf" (blowfish), "aes-128" (rijndael), "aes-192" or "aes-256".])],
336	pcg	1.1	if test "x$enableval" = xbf ; then CIPHER=bf_cbc ; fi
337			if test "x$enableval" = xaes-128; then CIPHER=aes_128_cbc; fi
338			if test "x$enableval" = xaes-192; then CIPHER=aes_192_cbc; fi
339			if test "x$enableval" = xaes-256; then CIPHER=aes_256_cbc; fi
340			)
341			AC_DEFINE_UNQUOTED(ENABLE_CIPHER, EVP_${CIPHER}, [Select the symmetric cipher to use.])
342
343	pcg	1.42	DIGEST=ripemd160
344	pcg	1.1	AC_ARG_ENABLE(digest,
345	pcg	1.30	[AS_HELP_STRING(--enable-digest,[
346	pcg	1.42	Select the digets algorithm to use (default "ripemd160"). Must be one of
347	pcg	1.30	"sha1", "ripemd160", "md5" or "md4" (insecure).])],
348	pcg	1.1	if test "x$enableval" = xsha1 ; then DIGEST=sha1 ; fi
349			if test "x$enableval" = xripemd160; then DIGEST=ripemd160; fi
350	pcg	1.9	if test "x$enableval" = xmd5 ; then DIGEST=md5 ; fi
351	pcg	1.1	if test "x$enableval" = xmd4 ; then DIGEST=md4 ; fi
352			)
353			AC_DEFINE_UNQUOTED(ENABLE_DIGEST, EVP_${DIGEST}, [Select the digest algorithm to use.])
354
355			if $CXX -v --help 2>&1 \| grep -q fno-rtti; then
356			CXXFLAGS="$CXXFLAGS -fno-rtti"
357			fi
358
359			if $CXX -v --help 2>&1 \| grep -q fexceptions; then
360			CXXFLAGS="$CXXFLAGS -fno-exceptions"
361			fi
362
363	pcg	1.20	dnl if $CXX -v --help 2>&1 \| grep -q ffunction-sections; then
364			dnl CXXFLAGS="$CXXFLAGS -ffunction-sections"
365			dnl fi
366			dnl
367			dnl if $LD -v --help 2>&1 \| grep -q gc-sections; then
368			dnl LDFLAGS="$LDFLAGS -Wl,--gc-sections"
369			dnl fi
370	pcg	1.1
371	pcg	1.42	AC_SUBST(INCLUDES)
372
373			AC_CONFIG_FILES([Makefile po/Makefile.in
374			src/Makefile
375			doc/Makefile
376			lib/Makefile
377			m4/Makefile
378			])
379			AC_OUTPUT
380	pcg	1.1
381			echo
382			echo "***"
383			echo "*** Configuration Summary"
384			echo "***"
385	pcg	1.8	echo "*** Kernel Iface: $IFTYPE/$IFSUBTYPE"
386	pcg	1.1	echo "*** Cipher used: $CIPHER"
387			echo "*** Digest used: $DIGEST"
388			echo "*** HMAC length: $HMAC"
389			echo "*** RAND used: $RAND"
390			echo "*** Max. MTU: $MTU"
391	pcg	1.42
392			echo "***"
393			echo "*** Enable options:"
394			grep ENABLE_ config.h \| sed -e 's/^/*** /'
395	pcg	1.24
396			if test "x$DIGEST" = xmd4; then
397	pcg	1.1	echo "***"
398	pcg	1.24	echo "*** WARNING: The digest you have chosen ($DIGEST) is known to be insecure"
399			fi
400	pcg	1.8
401	pcg	1.24	if test "$HMAC" -lt 12; then
402			echo "***"
403	pcg	1.26	echo "*** WARNING: The hmac length you have chosen ($HMAC) is probably insecure"
404	pcg	1.24	fi
405
406			if test "$RAND" -lt 8; then
407	pcg	1.8	echo "***"
408	pcg	1.26	echo "*** WARNING: The random prefix you have chosen ($RAND) is probably insecure"
409	pcg	1.8	fi
410	pcg	1.24
411			echo "***"
412	pcg	1.1	echo
413
414