configure.in 18.2 KB
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dnl $Id$
dnl Copyright 2001-2004 Roger Dingledine
dnl Copyright 2004-2005 Roger Dingledine, Nick Mathewson
dnl See LICENSE for licensing information
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AC_INIT
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AM_INIT_AUTOMAKE(tor, 0.1.1.8-alpha-cvs)
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AM_CONFIG_HEADER(orconfig.h)

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AC_CANONICAL_HOST

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if test -f /etc/redhat-release; then
    CFLAGS="$CFLAGS -I/usr/kerberos/include"
fi
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AC_ARG_ENABLE(debug,
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 AC_HELP_STRING(--enable-debug, compile with debugging info),
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[if test x$enableval = xyes; then
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    CFLAGS="$CFLAGS -g"
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fi])

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AC_ARG_ENABLE(threads,
     AC_HELP_STRING(--disable-threads, disable multi-threading support))

if test x$enable_threads = x; then
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   case $host in
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    *-*-netbsd* | *-*-openbsd* )
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     # Don't try multithreading on netbsd -- there is no threadsafe DNS
     # lookup function there.
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     AC_MSG_NOTICE([You are running OpenBSD or NetBSD; I am assuming that
getaddrinfo is not threadsafe here, so I will disable threads.])
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     enable_threads="no";;
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    *-*-solaris* )
     # Don't try multithreading on solaris -- cpuworkers seem to lock.
     AC_MSG_NOTICE([You are running Solaris; Sometimes threading makes
cpu workers lock up here, so I will disable threads.])
     enable_threads="no";;
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    *)
     enable_threads="yes";;
   esac
fi

if test $enable_threads = "yes"; then
  AC_DEFINE(ENABLE_THREADS, 1, [Defined if we will try to use multithreading])
fi

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case $host in
   *-*-solaris* )
     AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
     ;;
esac

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AC_PROG_CC
AC_PROG_MAKE_SET
AC_PROG_RANLIB

# The big search for OpenSSL
# copied from openssh's configure.ac
AC_ARG_WITH(ssl-dir,
        [  --with-ssl-dir=PATH     Specify path to OpenSSL installation ],
        [
                if test "x$withval" != "xno" ; then
                        tryssldir=$withval
                fi
        ]
)

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AC_SEARCH_LIBS(socket, [socket])
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AC_SEARCH_LIBS(gethostbyname, [nsl])
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if test $enable_threads = "yes"; then
  AC_SEARCH_LIBS(pthread_create, [pthread])
  AC_SEARCH_LIBS(pthread_detach, [pthread])
fi
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dnl ------------------------------------------------------
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dnl Where do you live, libevent?  And how do we call you?
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# Step 1. Try to link and run a program using libevent.  If it works,
#         great!  Just add -levent.
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AC_CACHE_CHECK([for a normal libevent], ac_cv_libevent_normal, [
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   saved_LIBS="$LIBS"
   LIBS="$LIBS -levent"
   AC_TRY_RUN([
void *event_init(void);
int main(void)
{
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	event_init();
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        return 0;
}], ac_cv_libevent_normal=yes, ac_cv_libevent_normal=no)
   LIBS="$saved_LIBS"
])

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if test "$ac_cv_libevent_normal" = yes; then
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  LIBS="$LIBS -levent"
else
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  AC_CACHE_CHECK([for libevent in /usr/local/lib], ac_cv_libevent_local, [
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     saved_LIBS="$LIBS"
     saved_LDFLAGS="$LDFLAGS"  
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     LIBS="$LIBS -levent"
     LDFLAGS="$LDFLAGS -L/usr/local/lib"
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     # Step 2.  Otherwise, check whether adding -L/usr/local/lib allows
     #          us to link.  If not, assume we have no libevent at all.
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     AC_TRY_LINK([], [ void *event_init(void); event_init(); ],
        [ libevent_is_in_local=yes ], [ libevent_is_in_local=no ])
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     if test $libevent_is_in_local = no ; then
       ac_cv_libevent_local=no   
     else
       # Step 3.  Does adding -L/usr/local/lib allow us to run, too?
       #          If so, all we have to do as adjust LDFLAGS and CFLAGS.
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       AC_TRY_RUN([
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void *event_init(void);
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int main(void)
{
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	event_init();
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        return 0;
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}], [ ac_cv_libevent_local=yes ], [ ac_cv_libevent_local=unlinked ])
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    fi
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    if test "$GCC" = yes -a $ac_cv_libevent_local = unlinked ; then
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       # Step 4.  Okay, so we can link but not run.  This probably means
       #          that the dynamic linker doesn't have /usr/local/lib in
       #          its search path.  If we're lucky enough to be running
       #          GCC on an ELF system, we might have a workaround for that.
       #          See whether -Wl,-R/usr/local/lib makes things better.
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       LDFLAGS="$LDFLAGS -Wl,-R/usr/local/lib"
       AC_TRY_RUN([
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void *event_init(void);
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int main(void)
{
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	event_init();
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        return 0;
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}], [ ac_cv_libevent_local=unlinked_gcc_elf ])
    fi 

    LIBS="$saved_LIBS"
    LDFLAGS="$saved_LDFLAGS" ])

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  # Now we're done.  ac_vc_libevent_local could be:
  #    yes -- Add -L/usr/local/lib and we can link fine.
  #    unlinked_gcc_elf -- We can link, but we need to use the GCC-ELF
  #        workaround.  Complain a little.
  #    unlinked -- We can link, but we can't run.  Complain a lot.
  #    no -- we can't link at all.  Give an error and die.

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  if test $ac_cv_libevent_local != no; then
      LIBS="$LIBS -levent"
      LDFLAGS="$LDFLAGS -L/usr/local/lib"
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      CPPFLAGS="$CPPFLAGS -I/usr/local/include"
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  fi
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  if test $ac_cv_libevent_local = unlinked_gcc_elf; then
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      LDFLAGS="$LDFLAGS -Wl,-R/usr/local/lib"
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      if test -f /etc/ld.so.conf ; then
        AC_MSG_NOTICE([
Apparently, you don't have /usr/local/lib in your /etc/ld.so.conf.
Tor is smart enought to deal this now, but other applications aren't.
You might want to add it in.])
      fi
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  fi

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  if test $ac_cv_libevent_local = unlinked ; then
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    if test -f /etc/ld.so.conf ; then
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      AC_MSG_NOTICE([
=================================================
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Your libevent library is installed in /usr/local/lib,
but your dynamic linker isn't configured to look for
it there.

Maybe you need to add /usr/local/lib to /etc/ld.so.conf,
and then run ldconfig -v ?
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=================================================])
    else
      AC_MSG_NOTICE([
=================================================
Your libevent library is installed in /usr/local/lib,
but your dynamic linker isn't configured to look for
it there.
=================================================])
    fi 
  fi
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  if test $ac_cv_libevent_local = no ; then
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      AC_MSG_ERROR([
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Tor requires libevent to build.  You can download the latest
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version of libevent from http://monkey.org/~provos/libevent/])
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  fi
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fi

dnl ------------------------------------------------------
dnl Where do you live, OpenSSL?
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saved_LIBS="$LIBS"
saved_LDFLAGS="$LDFLAGS"
saved_CPPFLAGS="$CPPFLAGS"
if test "x$prefix" != "xNONE" ; then
        tryssldir="$tryssldir $prefix"
fi
AC_CACHE_CHECK([for OpenSSL directory], ac_cv_openssldir, [
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        for ssldir in $tryssldir "" /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/athena /usr/pkg /opt /opt/openssl ; do
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                CPPFLAGS="$saved_CPPFLAGS"
                LDFLAGS="$saved_LDFLAGS"
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                LIBS="$saved_LIBS -lssl -lcrypto"

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                # Skip directories if they don't exist
                if test ! -z "$ssldir" -a ! -d "$ssldir" ; then
                        continue;
                fi
                if test ! -z "$ssldir" -a "x$ssldir" != "x/usr"; then
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                        # Try to use $ssldir/lib if it exists, otherwise
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                        # $ssldir
                        if test -d "$ssldir/lib" ; then
                                LDFLAGS="-L$ssldir/lib $saved_LDFLAGS"
                                if test ! -z "$need_dash_r" ; then
                                        LDFLAGS="-R$ssldir/lib $LDFLAGS"
                                fi
                        else
                                LDFLAGS="-L$ssldir $saved_LDFLAGS"
                                if test ! -z "$need_dash_r" ; then
                                        LDFLAGS="-R$ssldir $LDFLAGS"
                                fi
                        fi
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                        # Try to use $ssldir/include if it exists, otherwise
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                        # $ssldir
                        if test -d "$ssldir/include" ; then
                                CPPFLAGS="-I$ssldir/include $saved_CPPFLAGS"
                        else
                                CPPFLAGS="-I$ssldir $saved_CPPFLAGS"
                        fi
                fi

                # Basic test to check for compatible version and correct linking
                # *does not* test for RSA - that comes later.
                AC_TRY_RUN(
                        [
#include <string.h>
#include <openssl/rand.h>
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int main(void)
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{
        char a[2048];
        memset(a, 0, sizeof(a));
        RAND_add(a, sizeof(a), sizeof(a));
        return(RAND_status() <= 0);
}
                        ],
                        [
                                found_crypto=1
                                break;
                        ], []
                )

                if test ! -z "$found_crypto" ; then
                        break;
                fi
        done

        if test -z "$found_crypto" ; then
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                AC_MSG_ERROR([Could not find working OpenSSL library, please install or check config.log])
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        fi
        if test -z "$ssldir" ; then
                ssldir="(system)"
        fi

        ac_cv_openssldir=$ssldir
])
if (test ! -z "$ac_cv_openssldir" && test "x$ac_cv_openssldir" != "x(system)") ;
 then
        dnl Need to recover ssldir - test above runs in subshell
        ssldir=$ac_cv_openssldir
        if test ! -z "$ssldir" -a "x$ssldir" != "x/usr"; then
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                # Try to use $ssldir/lib if it exists, otherwise
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                # $ssldir
                if test -d "$ssldir/lib" ; then
                        LDFLAGS="-L$ssldir/lib $saved_LDFLAGS"
                        if test ! -z "$need_dash_r" ; then
                                LDFLAGS="-R$ssldir/lib $LDFLAGS"
                        fi
                else
                        LDFLAGS="-L$ssldir $saved_LDFLAGS"
                        if test ! -z "$need_dash_r" ; then
                                LDFLAGS="-R$ssldir $LDFLAGS"
                        fi
                fi
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                # Try to use $ssldir/include if it exists, otherwise
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                # $ssldir
                if test -d "$ssldir/include" ; then
                        CPPFLAGS="-I$ssldir/include $saved_CPPFLAGS"
                else
                        CPPFLAGS="-I$ssldir $saved_CPPFLAGS"
                fi
        fi
fi
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LIBS="$saved_LIBS"
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AC_SYS_LARGEFILE

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dnl The warning message here is no longer strictly accurate.

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AC_CHECK_HEADERS(unistd.h string.h signal.h netdb.h ctype.h sys/stat.h sys/types.h fcntl.h sys/fcntl.h sys/ioctl.h sys/socket.h sys/time.h netinet/in.h arpa/inet.h errno.h assert.h time.h pwd.h grp.h, , AC_MSG_WARN(some headers were not found, compilation may fail))
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AC_CHECK_HEADERS(event.h, , AC_MSG_ERROR(Libevent header (event.h) not found. Tor requires libevent to build.))
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AC_CHECK_HEADERS(zlib.h, , AC_MSG_ERROR(Zlib header (zlib.h) not found. Tor requires zlib to build. You may need to install a zlib development package.))

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dnl These headers are not essential

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AC_CHECK_HEADERS(stdint.h sys/types.h inttypes.h sys/param.h sys/wait.h sys/limits.h netinet/in.h arpa/inet.h machine/limits.h syslog.h sys/time.h sys/resource.h stddef.h inttypes.h utime.h sys/utime.h)
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AC_CHECK_FUNCS(gettimeofday ftime socketpair uname inet_aton strptime getrlimit setrlimit strlcat strlcpy strtoull getpwnam ftello getaddrinfo localtime_r gmtime_r event_get_version event_get_method event_set_log_callback memmem)

if test $enable_threads = "yes"; then
  AC_CHECK_HEADERS(pthread.h)
  AC_CHECK_FUNCS(pthread_create)
fi
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AC_FUNC_FSEEKO
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AC_CHECK_MEMBERS([struct timeval.tv_sec])

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dnl In case we aren't given a working stdint.h, we'll need to grow our own.
dnl Watch out.

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AC_CHECK_SIZEOF(int8_t)
AC_CHECK_SIZEOF(int16_t)
AC_CHECK_SIZEOF(int32_t)
AC_CHECK_SIZEOF(int64_t)
AC_CHECK_SIZEOF(uint8_t)
AC_CHECK_SIZEOF(uint16_t)
AC_CHECK_SIZEOF(uint32_t)
AC_CHECK_SIZEOF(uint64_t)
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AC_CHECK_SIZEOF(intptr_t)
AC_CHECK_SIZEOF(uintptr_t)
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dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
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AC_CHECK_SIZEOF(char)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(long long)
AC_CHECK_SIZEOF(__int64)
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AC_CHECK_SIZEOF(void *)
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AC_CHECK_SIZEOF(time_t)
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AC_CACHE_CHECK([whether time_t is signed], tor_cv_time_t_signed, [
AC_TRY_RUN([
int main(int c, char**v) { if (((time_t)-1)<0) return 1; else return 0; }],
  tor_cv_time_t_signed=no, tor_cv_time_t_signed=yes)
])

if test $tor_cv_time_t_signed = yes; then
  AC_DEFINE([TIME_T_IS_SIGNED], 1,
            [Define to 1 iff time_t is signed])
fi

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AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
])
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# We want to make sure that we _don't_ have a cell_t defined, like IRIX does.

AC_CHECK_SIZEOF(cell_t)

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# Now, let's see about alignment requirements.  On some platforms, we override
# the default.
case $host in
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 ia64-*-* | arm-*-* | sparc-*-* | sparc64-*-* )
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    tor_cv_unaligned_ok=no
    ;;
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 # On the following architectures unaligned access works, but is not done in
 # hardware.  This means that when you try to do unaligned access the kernel
 # gets to sort out an exception and then work around to somehow make your
 # reqest work, which is quite expensive.  Therefore it's probably better to
 # not even do it.
 alpha-*-* | mips-*-* | mipsel-*-* )
    tor_cv_unaligned_ok=no
    ;;
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 *)
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AC_CACHE_CHECK([whether unaligned int access is allowed], tor_cv_unaligned_ok,
[AC_RUN_IFELSE([AC_LANG_SOURCE(
[[int main () { char s[] = "A\x00\x00\x00\x00\x00\x00\x00";
return *(int*)(&s[1]); }]])],
       [tor_cv_unaligned_ok=yes],
       [tor_cv_unaligned_ok=no],
       [tor_cv_unaligned_ok=cross])])
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esac

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if test $tor_cv_unaligned_ok = yes; then
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  AC_DEFINE([UNALIGNED_INT_ACCESS_OK], 1,
            [Define to 1 iff unaligned int access is allowed])
fi

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# Now make sure that NULL can be represented as zero bytes.
AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
[AC_RUN_IFELSE([AC_LANG_SOURCE(
[[#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
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int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
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return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
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       [tor_cv_null_is_zero=yes],
       [tor_cv_null_is_zero=no],
       [tor_cv_null_is_zero=cross])])

if test $tor_cv_null_is_zero = yes; then
  AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
            [Define to 1 iff memset(0) sets pointers to NULL])
fi

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# Whether we should use the dmalloc memory allocation debugging library.
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AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
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AC_ARG_WITH(dmalloc,
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[  --with-dmalloc          Use debug memory allocation library. ],
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[if [[ "$withval" = "yes" ]]; then
  dmalloc=1
  AC_MSG_RESULT(yes)
else
  dmalloc=1
  AC_MSG_RESULT(no)
fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
)

if [[ $dmalloc -eq 1 ]]; then
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  AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
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  AC_SEARCH_LIBS(dmalloc_malloc, [dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  AC_DEFINE(DMALLOC_FUNC_CHECK, 1, [Enable dmalloc's malloc function check])
fi

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# Check for gethostbyname_r in all its glorious incompatible versions.
#   (This logic is based on that in Python's configure.in)
AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  [Define this if you have any gethostbyname_r()])

AC_CHECK_FUNC(gethostbyname_r, [
  AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  OLD_CFLAGS=$CFLAGS
  CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  AC_TRY_COMPILE([
#include <netdb.h>
  ], [
    char *cp1, *cp2;
    struct hostent *h1, *h2;
    int i1, i2;
    (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  ], [
    AC_DEFINE(HAVE_GETHOSTBYNAME_R)
    AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
     [Define this if gethostbyname_r takes 6 arguments])
    AC_MSG_RESULT(6)
  ], [
    AC_TRY_COMPILE([
#include <netdb.h>
    ], [
      char *cp1, *cp2;
      struct hostent *h1;
      int i1, i2;
      (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
    ], [
      AC_DEFINE(HAVE_GETHOSTBYNAME_R)
      AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
        [Define this if gethostbyname_r takes 5 arguments])
      AC_MSG_RESULT(5)
   ], [
      AC_TRY_COMPILE([
#include <netdb.h>
     ], [
       char *cp1;
       struct hostent *h1;
       struct hostent_data hd;
       (void) gethostbyname_r(cp1,h1,&hd);
     ], [
       AC_DEFINE(HAVE_GETHOSTBYNAME_R)
       AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
         [Define this if gethostbyname_r takes 3 arguments])
       AC_MSG_RESULT(3)
     ], [
       AC_MSG_RESULT(0)
     ])
  ])
 ])
 CFLAGS=$OLD_CFLAGS
])

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# $prefix stores the value of the --prefix command line option, or
# NONE if the option wasn't set.  In the case that it wasn't set, make
# it be the default, so that we can use it to expand directories now.
if test "x$prefix" = "xNONE"; then
  prefix=$ac_default_prefix
fi

# and similarly for $exec_prefix
if test "x$exec_prefix" = "xNONE"; then
  exec_prefix=$prefix
fi

CONFDIR=`eval echo $sysconfdir/tor`
AC_SUBST(CONFDIR)
AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
AC_DEFINE([CONFDIR], [], [tor's configuration directory])

BINDIR=`eval echo $bindir`
AC_SUBST(BINDIR)

LOCALSTATEDIR=`eval echo $localstatedir`
AC_SUBST(LOCALSTATEDIR)
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AC_DEFINE_UNQUOTED(LOCALSTATEDIR,"$LOCALSTATEDIR")
AC_DEFINE([LOCALSTATEDIR], [], [Default location to store state files.])
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# Set CFLAGS _after_ all the above checks, since our warnings are stricter
# than autoconf's macros like.
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CFLAGS="$CFLAGS -Wall -g -O2"
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# Add some more warnings which we use in the cvs version but not in the
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# released versions.  (Some relevant gcc versions can't handle these.)
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#CFLAGS="$CFLAGS -W -Wno-unused-parameter -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2 -Winit-self -Wwrite-strings -Waggregate-return -Wmissing-declarations -Wmissing-field-initializers -Wredundant-decls -Winline"
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# Add these in when you feel like fun.
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#CFLAGS="$CFLAGS -Wbad-function-cast -Werror -Wdeclaration-after-statement -Wold-style-definition"
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echo "confdir: $CONFDIR"

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AC_OUTPUT(Makefile tor.spec contrib/tor.sh contrib/torctl contrib/torify contrib/Makefile contrib/osx/Makefile contrib/osx/TorBundleDesc.plist contrib/osx/TorBundleInfo.plist contrib/osx/TorDesc.plist contrib/osx/TorInfo.plist contrib/osx/TorStartupDesc.plist src/config/torrc.sample doc/tor.1 src/Makefile doc/Makefile doc/design-paper/Makefile src/config/Makefile src/common/Makefile src/or/Makefile src/win32/Makefile src/tools/Makefile)
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if test -x /usr/bin/perl && test -x ./contrib/updateVersions.pl ; then
  ./contrib/updateVersions.pl
fi