gvpe/configure.ac

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

AC_PREREQ(2.69)
AC_INIT
AC_CONFIG_SRCDIR([src/gvpe.C])
AC_CANONICAL_TARGET
AM_INIT_AUTOMAKE(gvpe, 2.24)
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
])

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_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(tr1/unordered_map 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)
])

dnl libev support
m4_include([libev/libev.m4])

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(threads,
  [AS_HELP_STRING(--enable-threads,try to use threads for long-running asynchronous operations (default enabled).)],
  [try_threads=$enableval],
  [try_threads=yes]
)

if test "x$try_threads" = xyes; then
   AC_CHECK_HEADER(pthread.h,[
      LIBS="$LIBS -lpthread"
      AC_COMPILE_IFELSE(
         [AC_LANG_PROGRAM([#include <pthread.h>], [pthread_t id; pthread_create (&id, 0, 0, 0);])],
         [AC_DEFINE_UNQUOTED(ENABLE_PTHREADS, 1, [POSIX thread support.])]
      )
   ])
fi

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

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

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 )

ICMP=1
AC_ARG_ENABLE(icmp,
  [AS_HELP_STRING(--disable-icmp,enable icmp protocol support (default enabled).)],
  if test "x$enableval" = xno; then
     ICMP=0
  fi
)
if test "x$ICMP" = x1; then
  AC_DEFINE_UNQUOTED(ENABLE_ICMP, 1, [ICMP protocol support.])
fi

TCP=1
AC_ARG_ENABLE(tcp,
  [AS_HELP_STRING(--disable-tcp,enable tcp protocol support (default enabled).)],
  if test "x$enableval" = xno; then
     TCP=0
  fi
)
if test "x$TCP" = x1; then
  AC_DEFINE_UNQUOTED(ENABLE_TCP, 1, [TCP protocol support.])
fi

HTTP=1
AC_ARG_ENABLE(http-proxy,
  [AS_HELP_STRING(--disable-http-proxy,enable http proxy connect support (default enabled).)],
  if test "x$enableval" = xno; then
     HTTP=0
  fi
)
if test "x$HTTP" = x1; then
  AC_DEFINE_UNQUOTED(ENABLE_HTTP_PROXY, 1, [http proxy connect support.])
fi

AC_ARG_ENABLE(dns,
  [AS_HELP_STRING(--enable-dns,enable dns tunnel protocol support (default disabled).)],
  [
    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.])
  ]
)

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(max-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=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=CIPHER,[
      Select the digest algorithm to use (default "ripemd160"). Must be one of
      "sha512", "sha256", "sha1" (legacy), "ripemd160", "md5" (insecure) or "md4" (insecure).])],
  if test "x$enableval" = xsha512   ; then DIGEST=sha512   ; fi
  if test "x$enableval" = xsha256   ; then DIGEST=sha256   ; fi
  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

LIBS="$EXTRA_LIBS $LIBS"

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 "x$DIGEST" = xmd5; then
echo "***"
echo "*** WARNING: The digest you have chosen ($DIGEST) is quite insecure"
fi

if test "$HMAC" -lt 12; then
echo "***"
echo "*** WARNING: The hmac length you have chosen ($HMAC) is quite 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:	1.61
Committed:	Sat Jul 13 04:10:29 2013 UTC (10 years, 10 months ago) by root
Branch:	MAIN
CVS Tags:	rel-2_25
Changes since 1.60:	+3 -3 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	root	1.60	AC_PREREQ(2.69)
4	pcg	1.28	AC_INIT
5	pcg	1.37	AC_CONFIG_SRCDIR([src/gvpe.C])
6	pcg	1.1	AC_CANONICAL_TARGET
7	root	1.57	AM_INIT_AUTOMAKE(gvpe, 2.24)
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			AM_GNU_GETTEXT([external])
52			AM_GNU_GETTEXT_VERSION(0.11.5)
53
54			# Enable GNU extensions.
55			# Define this here, not in acconfig's @TOP@ section, since definitions
56			# in the latter don't make it into the configure-time tests.
57	pcg	1.42	AC_DEFINE([_GNU_SOURCE], 1, [Enable GNU extensions])
58	pcg	1.22
59			# do NOT define POSIX_SOURCE, sicne this clashes with many BSDs
60			dnl AC_DEFINE([_POSIX_SOURCE], 1, [Enable POSIX 1003.1 extensions])
61			dnl AC_DEFINE([_XOPEN_SOURCE], 500, [Enable XOPEN extensions])
62	pcg	1.1
63			ALL_LINGUAS=""
64
65			dnl Checks for programs.
66			AC_PROG_CPP
67			AC_PROG_CXX
68			AC_PROG_GCC_TRADITIONAL
69			AC_PROG_AWK
70			AC_PROG_INSTALL
71			AC_PROG_LN_S
72			AC_PROG_MAKE_SET
73			AC_PROG_RANLIB
74
75	pcg	1.8	AC_ARG_ENABLE(iftype,
76	pcg	1.28	[AS_HELP_STRING(--enable-iftype=TYPE/SUBTYPE,
77	pcg	1.8	Use kernel/net device interface TYPE/SUBTYPE.
78	pcg	1.40	Working combinations are (see doc/gvpe.osdep.5.pod):
79	pcg	1.14	"native/linux"
80			"tincd/linux"
81	pcg	1.40	"tincd/netbsd"
82	pcg	1.16	"tincd/freebsd"
83	pcg	1.17	"tincd/openbsd"
84	pcg	1.40	"native/darwin"
85	pcg	1.18	"tincd/darwin"
86	pcg	1.16	"native/cygwin";
87	pcg	1.8	Untested combinations are:
88	pcg	1.41	"tincd/bsd"
89	pcg	1.14	"tincd/solaris"
90	pcg	1.36	"tincd/mingw"
91			"tincd/raw_socket"
92			"tincd/uml_socket";
93	pcg	1.8	Broken combinations are:
94	pcg	1.14	"tincd/cygwin";
95	pcg	1.9	The default is to autodetect.
96	pcg	1.28	)],
97	pcg	1.8	[
98			IFTYPE=`echo $enableval \| sed s%/.*%%`
99			IFSUBTYPE=`echo $enableval \| sed s%.*/%%`
100			]
101			)
102
103	pcg	1.1	dnl Check and set OS
104	pcg	1.8	AC_MSG_CHECKING(for kernel networking interface type)
105	pcg	1.1
106	pcg	1.8	if test "x$IFTYPE" = "x"; then
107			case $target_os in
108			linux)
109			IFTYPE=native
110			IFSUBTYPE=linux
111			AC_DEFINE(HAVE_LINUX, 1, [Linux])
112			;;
113			freebsd)
114			IFTYPE=tincd
115			IFSUBTYPE=freebsd
116			AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
117			;;
118			darwin)
119	pcg	1.39	IFTYPE=native
120	pcg	1.8	IFSUBTYPE=darwin
121			AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
122			;;
123			solaris)
124			IFTYPE=tincd
125			IFSUBTYPE=solaris
126			AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
127			;;
128			openbsd)
129			IFTYPE=tincd
130			IFSUBTYPE=openbsd
131			AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
132			;;
133			netbsd)
134			IFTYPE=tincd
135			IFSUBTYPE=netbsd
136			AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
137			;;
138			cygwin)
139	pcg	1.15	IFTYPE=native
140	pcg	1.8	IFSUBTYPE=cygwin
141			AC_DEFINE(HAVE_CYGWIN, 1, [Cygwin])
142			;;
143			*)
144			AC_MSG_ERROR("Unknown operating system.")
145			;;
146			esac
147			fi
148			AC_MSG_RESULT($IFTYPE/$IFSUBTYPE)
149			AC_SUBST(IFTYPE,$IFTYPE)
150			AC_SUBST(IFSUBTYPE,$IFSUBTYPE)
151	pcg	1.19	AC_DEFINE_UNQUOTED(IFTYPE,"$IFTYPE",[kernel interface type])
152			AC_DEFINE_UNQUOTED(IFSUBTYPE,"$IFSUBTYPE",[kernel interface subtype])
153	pcg	1.1
154			AC_CACHE_SAVE
155
156			dnl Checks for libraries.
157
158			AC_LANG(C++)
159	pcg	1.48	AC_CHECK_HEADERS(tr1/unordered_map ext/hash_map clocale)
160	pcg	1.1
161			dnl Checks for header files.
162			AC_CHECK_HEADERS([fcntl.h inttypes.h limits.h malloc.h stdint.h strings.h syslog.h unistd.h \
163	pcg	1.22	sys/file.h sys/ioctl.h sys/param.h sys/time.h netinet/in_systm.h sys/cygwin.h \
164	pcg	1.21	sys/mman.h netinet/in.h])
165	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], [], [],
166	pcg	1.8	[
167			#include <sys/types.h>
168			#include <sys/socket.h>
169			#ifdef HAVE_NETINET_IN_H
170			# include <netinet/in.h>
171			#endif
172			#ifdef HAVE_ARPA_INET_H
173			# include <arpa/inet.h>
174			#endif
175			#ifdef HAVE_NETINET_IN_SYSTM_H
176			# include <netinet/in_systm.h>
177			#endif
178			])
179	pcg	1.1
180			dnl Checks for typedefs, structures, and compiler characteristics.
181			AC_C_CONST
182			AC_TYPE_PID_T
183			AC_TYPE_SIZE_T
184			AC_HEADER_TIME
185			AC_STRUCT_TM
186	pcg	1.10
187	pcg	1.1	AC_CACHE_CHECK([for socklen_t], ac_cv_type_socklen_t,
188			[
189	pcg	1.28	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
190			#include <sys/socket.h>]], [[socklen_t len = 42; return len;]])],[ac_cv_type_socklen_t=yes],[ac_cv_type_socklen_t=no])
191	pcg	1.1	])
192			if test $ac_cv_type_socklen_t = yes; then
193			AC_DEFINE(HAVE_SOCKLEN_T, 1, [socklen_t available])
194			fi
195
196			AC_CACHE_CHECK([for struct addrinfo], ac_cv_struct_addrinfo,
197			[
198	pcg	1.28	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
199	pcg	1.1	#include <sys/socket.h>
200	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])
201	pcg	1.1	])
202			if test $ac_cv_struct_addrinfo = yes; then
203			AC_DEFINE(HAVE_STRUCT_ADDRINFO, 1, [struct addrinfo available])
204			fi
205
206			dnl Checks for library functions.
207			AC_TYPE_SIGNAL
208
209			AC_LANG_PUSH(C)
210
211			AC_HEADER_STDC
212
213	pcg	1.11	dnl argl, could somebody catapult darwin into the 21st century???
214	pcg	1.21	AC_CHECK_FUNCS(asprintf daemon get_current_dir_name putenv select strerror strsignal strtol unsetenv mlockall)
215	pcg	1.1
216			AC_FUNC_ALLOCA
217
218			dnl Support for SunOS
219
220			AC_CHECK_FUNC(socket, [], [
221			AC_CHECK_LIB(socket, connect)
222			])
223			AC_CHECK_FUNC(gethostbyname, [], [
224			AC_CHECK_LIB(nsl, gethostbyname)
225			])
226
227	pcg	1.46	dnl libev support
228	pcg	1.47	m4_include([libev/libev.m4])
229	pcg	1.46
230	pcg	1.1	AC_LANG_POP
231
232			dnl AC_CHECK_FUNCS([freeaddrinfo gai_strerror getaddrinfo getnameinfo])
233
234			AC_CACHE_SAVE
235
236			dnl These are defined in files in m4/
237			tinc_TUNTAP
238	pcg	1.15
239	pcg	1.1	tinc_OPENSSL
240	pcg	1.15	if test "x$openssl_include" != x; then
241			CXXFLAGS="$CXXFLAGS -I$openssl_include"
242			fi
243	pcg	1.1	dnl tinc_ZLIB
244
245	root	1.58	AC_ARG_ENABLE(threads,
246			[AS_HELP_STRING(--enable-threads,try to use threads for long-running asynchronous operations (default enabled).)],
247			[try_threads=$enableval],
248			[try_threads=yes]
249			)
250
251			if test "x$try_threads" = xyes; then
252			AC_CHECK_HEADER(pthread.h,[
253			LIBS="$LIBS -lpthread"
254			AC_COMPILE_IFELSE(
255			[AC_LANG_PROGRAM([#include <pthread.h>], [pthread_t id; pthread_create (&id, 0, 0, 0);])],
256			[AC_DEFINE_UNQUOTED(ENABLE_PTHREADS, 1, [POSIX thread support.])]
257			)
258			])
259			fi
260
261	pcg	1.30	AC_ARG_ENABLE(static-daemon,
262			[AS_HELP_STRING(--enable-static-daemon,enable statically linked daemon.)],
263			[LDFLAGS_DAEMON=-static]
264			)
265			AC_SUBST(LDFLAGS_DAEMON)
266
267	pcg	1.50	dnl AC_ARG_ENABLE(rohc,
268			dnl [AS_HELP_STRING(--enable-rohc,enable robust header compression (rfc3095).)],
269			dnl [
270			dnl echo
271			dnl echo "**********************************************************************"
272			dnl echo "**********************************************************************"
273			dnl echo "** --enable-rohc is highly experimental, do not use **************"
274			dnl echo "**********************************************************************"
275			dnl echo "**********************************************************************"
276			dnl echo
277			dnl rohc=true
278			dnl AC_DEFINE_UNQUOTED(ENABLE_ROHC, 1, [ROHC support])
279			dnl ]
280			dnl )
281	pcg	1.5
282	pcg	1.25	AM_CONDITIONAL(ROHC, test x$rohc = xtrue)
283
284	pcg	1.42	dnl AC_ARG_ENABLE(bridging,
285			dnl [AS_HELP_STRING(--enable-bridging,enable bridging support (default disabled).)],
286			dnl AC_DEFINE_UNQUOTED(ENABLE_BRIDGING, 1, [bridging support.])
287			dnl )
288
289	pcg	1.52	ICMP=1
290	pcg	1.4	AC_ARG_ENABLE(icmp,
291	pcg	1.52	[AS_HELP_STRING(--disable-icmp,enable icmp protocol support (default enabled).)],
292			if test "x$enableval" = xno; then
293			ICMP=0
294			fi
295			)
296			if test "x$ICMP" = x1; then
297	pcg	1.4	AC_DEFINE_UNQUOTED(ENABLE_ICMP, 1, [ICMP protocol support.])
298	pcg	1.52	fi
299	pcg	1.4
300	pcg	1.52	TCP=1
301	pcg	1.2	AC_ARG_ENABLE(tcp,
302	pcg	1.52	[AS_HELP_STRING(--disable-tcp,enable tcp protocol support (default enabled).)],
303			if test "x$enableval" = xno; then
304			TCP=0
305			fi
306			)
307			if test "x$TCP" = x1; then
308	pcg	1.2	AC_DEFINE_UNQUOTED(ENABLE_TCP, 1, [TCP protocol support.])
309	pcg	1.52	fi
310
311			HTTP=1
312			AC_ARG_ENABLE(http-proxy,
313			[AS_HELP_STRING(--disable-http-proxy,enable http proxy connect support (default enabled).)],
314			if test "x$enableval" = xno; then
315			HTTP=0
316			fi
317	pcg	1.2	)
318	pcg	1.52	if test "x$HTTP" = x1; then
319			AC_DEFINE_UNQUOTED(ENABLE_HTTP_PROXY, 1, [http proxy connect support.])
320			fi
321	pcg	1.2
322	pcg	1.26	AC_ARG_ENABLE(dns,
323	pcg	1.52	[AS_HELP_STRING(--enable-dns,enable dns tunnel protocol support (default disabled).)],
324	pcg	1.34	[
325			AC_CHECK_HEADER(gmp.h,,[AC_MSG_ERROR([gmp.h not found, required for --enable-dns])])
326			AC_CHECK_LIB(gmp,main,,[AC_MSG_ERROR([libgmp not found, required for --enable-dns])])
327
328			AC_DEFINE_UNQUOTED(ENABLE_DNS, 1, [DNS tunnel protocol support.])
329			]
330	pcg	1.26	)
331
332	pcg	1.30	HMAC=12
333	pcg	1.1	AC_ARG_ENABLE(hmac-length,
334	pcg	1.30	[AS_HELP_STRING(--enable-hmac-length=BYTES,[
335			use a hmac of length BYTES bytes (default 12). Allowed values are 4, 8, 12, 16.])],
336	pcg	1.1	HMAC=$enableval
337			)
338			AC_DEFINE_UNQUOTED(HMACLENGTH, $HMAC, [Size of HMAC in each packet in bytes.])
339
340	pcg	1.30	RAND=8
341	pcg	1.1	AC_ARG_ENABLE(rand-length,
342	pcg	1.30	[AS_HELP_STRING(--enable-rand-length=BYTES,
343			[use BYTES bytes of extra randomness (default 8). Allowed values are 0, 4, 8.])],
344	pcg	1.1	RAND=$enableval
345			)
346			AC_DEFINE_UNQUOTED(RAND_SIZE, $RAND, [Add this many bytes of randomness to each packet.])
347
348	pcg	1.30	MTU=1500
349	pcg	1.56	AC_ARG_ENABLE(max-mtu,
350	pcg	1.28	[AS_HELP_STRING(--enable-max-mtu=BYTES,enable mtu sizes upto BYTES bytes (default 1500). Use 9100 for jumbogram support.)],
351	pcg	1.1	MTU=$enableval
352			)
353	root	1.59	AC_DEFINE_UNQUOTED(MAX_MTU, ($MTU + 14), [Maximum MTU supported.])
354	pcg	1.1
355			COMPRESS=1
356			AC_ARG_ENABLE(compression,
357	pcg	1.28	[AS_HELP_STRING(--disable-compression,Disable compression support.)],
358	pcg	1.1	if test "x$enableval" = xno; then
359			COMPRESS=0
360			fi
361			)
362			AC_DEFINE_UNQUOTED(ENABLE_COMPRESSION, $COMPRESS, [Enable compression support.])
363
364	pcg	1.42	CIPHER=aes_128_cbc
365	pcg	1.1	AC_ARG_ENABLE(cipher,
366	pcg	1.52	[AS_HELP_STRING(--enable-cipher=CIPHER,[
367	pcg	1.42	Select the symmetric cipher (default "aes-128").
368	pcg	1.30	Must be one of "bf" (blowfish), "aes-128" (rijndael), "aes-192" or "aes-256".])],
369	pcg	1.1	if test "x$enableval" = xbf ; then CIPHER=bf_cbc ; fi
370			if test "x$enableval" = xaes-128; then CIPHER=aes_128_cbc; fi
371			if test "x$enableval" = xaes-192; then CIPHER=aes_192_cbc; fi
372			if test "x$enableval" = xaes-256; then CIPHER=aes_256_cbc; fi
373			)
374			AC_DEFINE_UNQUOTED(ENABLE_CIPHER, EVP_${CIPHER}, [Select the symmetric cipher to use.])
375
376	pcg	1.42	DIGEST=ripemd160
377	pcg	1.1	AC_ARG_ENABLE(digest,
378	pcg	1.52	[AS_HELP_STRING(--enable-digest=CIPHER,[
379	pcg	1.44	Select the digest algorithm to use (default "ripemd160"). Must be one of
380	root	1.61	"sha512", "sha256", "sha1" (legacy), "ripemd160", "md5" (insecure) or "md4" (insecure).])],
381	pcg	1.45	if test "x$enableval" = xsha512 ; then DIGEST=sha512 ; fi
382			if test "x$enableval" = xsha256 ; then DIGEST=sha256 ; fi
383	pcg	1.1	if test "x$enableval" = xsha1 ; then DIGEST=sha1 ; fi
384			if test "x$enableval" = xripemd160; then DIGEST=ripemd160; fi
385	pcg	1.9	if test "x$enableval" = xmd5 ; then DIGEST=md5 ; fi
386	pcg	1.1	if test "x$enableval" = xmd4 ; then DIGEST=md4 ; fi
387			)
388			AC_DEFINE_UNQUOTED(ENABLE_DIGEST, EVP_${DIGEST}, [Select the digest algorithm to use.])
389
390			if $CXX -v --help 2>&1 \| grep -q fno-rtti; then
391			CXXFLAGS="$CXXFLAGS -fno-rtti"
392			fi
393
394	pcg	1.49	#if $CXX -v --help 2>&1 \| grep -q fexceptions; then
395			# CXXFLAGS="$CXXFLAGS -fno-exceptions"
396			#fi
397	pcg	1.1
398	pcg	1.47	LIBS="$EXTRA_LIBS $LIBS"
399
400	pcg	1.20	dnl if $CXX -v --help 2>&1 \| grep -q ffunction-sections; then
401			dnl CXXFLAGS="$CXXFLAGS -ffunction-sections"
402			dnl fi
403			dnl
404			dnl if $LD -v --help 2>&1 \| grep -q gc-sections; then
405			dnl LDFLAGS="$LDFLAGS -Wl,--gc-sections"
406			dnl fi
407	pcg	1.1
408	pcg	1.42	AC_SUBST(INCLUDES)
409
410			AC_CONFIG_FILES([Makefile po/Makefile.in
411			src/Makefile
412			doc/Makefile
413			lib/Makefile
414			m4/Makefile
415			])
416			AC_OUTPUT
417	pcg	1.1
418			echo
419			echo "***"
420			echo "*** Configuration Summary"
421			echo "***"
422	pcg	1.8	echo "*** Kernel Iface: $IFTYPE/$IFSUBTYPE"
423	pcg	1.1	echo "*** Cipher used: $CIPHER"
424			echo "*** Digest used: $DIGEST"
425			echo "*** HMAC length: $HMAC"
426			echo "*** RAND used: $RAND"
427			echo "*** Max. MTU: $MTU"
428	pcg	1.42
429			echo "***"
430			echo "*** Enable options:"
431			grep ENABLE_ config.h \| sed -e 's/^/*** /'
432	pcg	1.24
433			if test "x$DIGEST" = xmd4; then
434	pcg	1.1	echo "***"
435	pcg	1.24	echo "*** WARNING: The digest you have chosen ($DIGEST) is known to be insecure"
436			fi
437	pcg	1.8
438	root	1.58	if test "x$DIGEST" = xmd5; then
439			echo "***"
440	root	1.61	echo "*** WARNING: The digest you have chosen ($DIGEST) is quite insecure"
441	root	1.58	fi
442
443	pcg	1.24	if test "$HMAC" -lt 12; then
444			echo "***"
445	root	1.61	echo "*** WARNING: The hmac length you have chosen ($HMAC) is quite insecure"
446	pcg	1.24	fi
447
448			if test "$RAND" -lt 8; then
449	pcg	1.8	echo "***"
450	pcg	1.26	echo "*** WARNING: The random prefix you have chosen ($RAND) is probably insecure"
451	pcg	1.8	fi
452	pcg	1.24
453			echo "***"
454	pcg	1.1	echo
455
456