~ubuntu-branches/ubuntu/natty/libgcrypt11/natty-proposed

dnl macros to configure Libgcrypt

dnl Copyright (C) 1998, 1999, 2000, 2001, 2002,

dnl               2003 Free Software Foundation, Inc.

dnl

dnl This file is part of Libgcrypt.

dnl

dnl Libgcrypt is free software; you can redistribute it and/or modify

dnl it under the terms of the GNU Lesser General Public License as

dnl published by the Free Software Foundation; either version 2.1 of

dnl the License, or (at your option) any later version.

dnl

dnl Libgcrypt is distributed in the hope that it will be useful,

dnl but WITHOUT ANY WARRANTY; without even the implied warranty of

dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

dnl GNU Lesser General Public License for more details.

dnl

dnl You should have received a copy of the GNU Lesser General Public

dnl License along with this program; if not, write to the Free Software

dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

dnl GNUPG_MSG_PRINT(STRING)

dnl print a message

dnl

define([GNUPG_MSG_PRINT],

  [ echo $ac_n "$1"" $ac_c" 1>&AS_MESSAGE_FD([])

  ])

dnl GNUPG_CHECK_TYPEDEF(TYPE, HAVE_NAME)

dnl Check whether a typedef exists and create a #define $2 if it exists

dnl

AC_DEFUN([GNUPG_CHECK_TYPEDEF],

  [ AC_MSG_CHECKING(for $1 typedef)

    AC_CACHE_VAL(gnupg_cv_typedef_$1,

    [AC_TRY_COMPILE([#define _GNU_SOURCE 1

    #include <stdlib.h>

    #include <sys/types.h>], [

    #undef $1

    int a = sizeof($1);

    ], gnupg_cv_typedef_$1=yes, gnupg_cv_typedef_$1=no )])

    AC_MSG_RESULT($gnupg_cv_typedef_$1)

    if test "$gnupg_cv_typedef_$1" = yes; then

        AC_DEFINE($2,1,[Defined if a `]$1[' is typedef'd])

    fi

  ])

dnl GNUPG_CHECK_GNUMAKE

dnl

AC_DEFUN([GNUPG_CHECK_GNUMAKE],

  [

    if ${MAKE-make} --version 2>/dev/null | grep '^GNU ' >/dev/null 2>&1; then

        :

    else

        AC_MSG_WARN([[

***

*** It seems that you are not using GNU make.  Some make tools have serious

*** flaws and you may not be able to build this software at all. Before you

*** complain, please try GNU make:  GNU make is easy to build and available

*** at all GNU archives.  It is always available from ftp.gnu.org:/gnu/make.

***]])

    fi

  ])

#

# GNUPG_SYS_SYMBOL_UNDERSCORE

# Does the compiler prefix global symbols with an underscore?

#

# Taken from GnuPG 1.2 and modified to use the libtool macros.

AC_DEFUN([GNUPG_SYS_SYMBOL_UNDERSCORE],

[tmp_do_check="no"

case "${host}" in

    *-mingw32msvc*)

        ac_cv_sys_symbol_underscore=yes

        ;;

    i386-emx-os2 | i[3456]86-pc-os2*emx | i386-pc-msdosdjgpp)

        ac_cv_sys_symbol_underscore=yes

        ;;

    *)

      if test "$cross_compiling" = yes; then

        if test "x$ac_cv_sys_symbol_underscore" = x ; then

           ac_cv_sys_symbol_underscore=yes

        fi

      else

         tmp_do_check="yes"

      fi

       ;;

esac

if test "$tmp_do_check" = "yes"; then

  AC_REQUIRE([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])

  AC_MSG_CHECKING([for _ prefix in compiled symbols])

  AC_CACHE_VAL(ac_cv_sys_symbol_underscore,

  [ac_cv_sys_symbol_underscore=no

   cat > conftest.$ac_ext <<EOF

      void nm_test_func(){}

      int main(){nm_test_func;return 0;}

EOF

  if AC_TRY_EVAL(ac_compile); then

    # Now try to grab the symbols.

    ac_nlist=conftest.nm

    if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \| cut -d \' \' -f 2 \> $ac_nlist) && test -s "$ac_nlist"; then

      # See whether the symbols have a leading underscore.

      if egrep '^_nm_test_func' "$ac_nlist" >/dev/null; then

        ac_cv_sys_symbol_underscore=yes

      else

        if egrep '^nm_test_func ' "$ac_nlist" >/dev/null; then

          :

        else

          echo "configure: cannot find nm_test_func in $ac_nlist" >&AC_FD_CC

        fi

      fi

    else

      echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AC_FD_CC

    fi

  else

    echo "configure: failed program was:" >&AC_FD_CC

    cat conftest.c >&AC_FD_CC

  fi

  rm -rf conftest*

  ])

  else

  AC_MSG_CHECKING([for _ prefix in compiled symbols])

  fi

AC_MSG_RESULT($ac_cv_sys_symbol_underscore)

if test x$ac_cv_sys_symbol_underscore = xyes; then

  AC_DEFINE(WITH_SYMBOL_UNDERSCORE,1,

            [Defined if compiled symbols have a leading underscore])

fi

])

######################################################################

# Check whether mlock is broken (hpux 10.20 raises a SIGBUS if mlock

# is not called from uid 0 (not tested whether uid 0 works)

# For DECs Tru64 we have also to check whether mlock is in librt

# mlock is there a macro using memlk()

######################################################################

dnl GNUPG_CHECK_MLOCK

dnl

define(GNUPG_CHECK_MLOCK,

  [ AC_CHECK_FUNCS(mlock)

    if test "$ac_cv_func_mlock" = "no"; then

        AC_CHECK_HEADERS(sys/mman.h)

        if test "$ac_cv_header_sys_mman_h" = "yes"; then

            # Add librt to LIBS:

            AC_CHECK_LIB(rt, memlk)

            AC_CACHE_CHECK([whether mlock is in sys/mman.h],

                            gnupg_cv_mlock_is_in_sys_mman,

                [AC_TRY_LINK([

                    #include <assert.h>

                    #ifdef HAVE_SYS_MMAN_H

                    #include <sys/mman.h>

                    #endif

                ], [

int i;

/* glibc defines this for functions which it implements

 * to always fail with ENOSYS.  Some functions are actually

 * named something starting with __ and the normal name

 * is an alias.  */

#if defined (__stub_mlock) || defined (__stub___mlock)

choke me

#else

mlock(&i, 4);

#endif

; return 0;

                ],

                gnupg_cv_mlock_is_in_sys_mman=yes,

                gnupg_cv_mlock_is_in_sys_mman=no)])

            if test "$gnupg_cv_mlock_is_in_sys_mman" = "yes"; then

                AC_DEFINE(HAVE_MLOCK,1,

                          [Defined if the system supports an mlock() call])

            fi

        fi

    fi

    if test "$ac_cv_func_mlock" = "yes"; then

        AC_CHECK_FUNCS(sysconf getpagesize)

        AC_MSG_CHECKING(whether mlock is broken)

          AC_CACHE_VAL(gnupg_cv_have_broken_mlock,

             AC_TRY_RUN([

#include <stdlib.h>

#include <unistd.h>

#include <errno.h>

#include <sys/mman.h>

#include <sys/types.h>

#include <fcntl.h>

int main()

{

    char *pool;

    int err;

    long int pgsize;

#if defined(HAVE_SYSCONF) && defined(_SC_PAGESIZE)

    pgsize = sysconf (_SC_PAGESIZE);

#elif defined (HAVE_GETPAGESIZE)

    pgsize = getpagesize();       

#else

    pgsize = -1;

#endif

    if (pgsize == -1)

      pgsize = 4096;

    pool = malloc( 4096 + pgsize );

    if( !pool )

        return 2;

    pool += (pgsize - ((long int)pool % pgsize));

    err = mlock( pool, 4096 );

    if( !err || errno == EPERM )

        return 0; /* okay */

    return 1;  /* hmmm */

}

            ],

            gnupg_cv_have_broken_mlock="no",

            gnupg_cv_have_broken_mlock="yes",

            gnupg_cv_have_broken_mlock="assume-no"

           )

         )

         if test "$gnupg_cv_have_broken_mlock" = "yes"; then

             AC_DEFINE(HAVE_BROKEN_MLOCK,1,

                       [Defined if the mlock() call does not work])

             AC_MSG_RESULT(yes)

         else

            if test "$gnupg_cv_have_broken_mlock" = "no"; then

                AC_MSG_RESULT(no)

            else

                AC_MSG_RESULT(assuming no)

            fi

         fi

    fi

  ])

# GNUPG_SYS_LIBTOOL_CYGWIN32 - find tools needed on cygwin32

AC_DEFUN([GNUPG_SYS_LIBTOOL_CYGWIN32],

[AC_CHECK_TOOL(DLLTOOL, dlltool, false)

AC_CHECK_TOOL(AS, as, false)

])

dnl LIST_MEMBER()

dnl Check wether an element ist contained in a list.  Set `found' to

dnl `1' if the element is found in the list, to `0' otherwise.

AC_DEFUN([LIST_MEMBER],

[

name=$1

list=$2

found=0

for n in $list; do

  if test "x$name" = "x$n"; then

    found=1

  fi

done

])

dnl AM_PATH_GPG_ERROR([MINIMUM-VERSION,

dnl                   [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])

dnl Test for libgpg-error and define GPG_ERROR_CFLAGS and GPG_ERROR_LIBS

dnl

AC_DEFUN([AM_PATH_GPG_ERROR],

[ AC_ARG_WITH(gpg-error-prefix,

            AC_HELP_STRING([--with-gpg-error-prefix=PFX],

                           [prefix where GPG Error is installed (optional)]),

     gpg_error_config_prefix="$withval", gpg_error_config_prefix="")

  if test x$gpg_error_config_prefix != x ; then

     if test x${GPG_ERROR_CONFIG+set} != xset ; then

        GPG_ERROR_CONFIG=$gpg_error_config_prefix/bin/gpg-error-config

     fi

  fi

  AC_PATH_PROG(GPG_ERROR_CONFIG, gpg-error-config, no)

  min_gpg_error_version=ifelse([$1], ,0.0,$1)

  AC_MSG_CHECKING(for GPG Error - version >= $min_gpg_error_version)

  ok=no

  if test "$GPG_ERROR_CONFIG" != "no" ; then

    req_major=`echo $min_gpg_error_version | \

               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`

    req_minor=`echo $min_gpg_error_version | \

               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`

    gpg_error_config_version=`$GPG_ERROR_CONFIG $gpg_error_config_args --version`

    if test "$gpg_error_config_version"; then

      major=`echo $gpg_error_config_version | \

                 sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`

      minor=`echo $gpg_error_config_version | \

                 sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`

      if test "$major" -gt "$req_major"; then

          ok=yes

      else 

          if test "$major" -eq "$req_major"; then

              if test "$minor" -ge "$req_minor"; then

                 ok=yes

              fi

          fi

      fi

    fi

  fi

  if test $ok = yes; then

    GPG_ERROR_CFLAGS=`$GPG_ERROR_CONFIG $gpg_error_config_args --cflags`

    GPG_ERROR_LIBS=`$GPG_ERROR_CONFIG $gpg_error_config_args --libs`

    AC_MSG_RESULT(yes)

    ifelse([$2], , :, [$2])

  else

    GPG_ERROR_CFLAGS=""

    GPG_ERROR_LIBS=""

    AC_MSG_RESULT(no)

    ifelse([$3], , :, [$3])

  fi

  AC_SUBST(GPG_ERROR_CFLAGS)

  AC_SUBST(GPG_ERROR_LIBS)

])

dnl Check for socklen_t: historically on BSD it is an int, and in

dnl POSIX 1g it is a type of its own, but some platforms use different

dnl types for the argument to getsockopt, getpeername, etc.  So we

dnl have to test to find something that will work.

AC_DEFUN([TYPE_SOCKLEN_T],

[

   AC_CHECK_TYPE([socklen_t], ,[

      AC_MSG_CHECKING([for socklen_t equivalent])

      AC_CACHE_VAL([socklen_t_equiv],

      [

         # Systems have either "struct sockaddr *" or

         # "void *" as the second argument to getpeername

         socklen_t_equiv=

         for arg2 in "struct sockaddr" void; do

            for t in int size_t unsigned long "unsigned long"; do

               AC_TRY_COMPILE([

#include <sys/types.h>

#include <sys/socket.h>

int getpeername (int, $arg2 *, $t *);

               ],[

                  $t len;

                  getpeername(0,0,&len);

               ],[

                  socklen_t_equiv="$t"

                  break

               ])

            done

         done

         if test "x$socklen_t_equiv" = x; then

            AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])

         fi

      ])

      AC_MSG_RESULT($socklen_t_equiv)

      AC_DEFINE_UNQUOTED(socklen_t, $socklen_t_equiv,

			[type to use in place of socklen_t if not defined])],

      [#include <sys/types.h>

#include <sys/socket.h>])

])

# GNUPG_PTH_VERSION_CHECK(REQUIRED)

# 

# If the version is sufficient, HAVE_PTH will be set to yes.

#

# Taken form the m4 macros which come with Pth

AC_DEFUN([GNUPG_PTH_VERSION_CHECK],

  [

    _pth_version=`$PTH_CONFIG --version | awk 'NR==1 {print [$]3}'`

    _req_version="ifelse([$1],,1.2.0,$1)"

    AC_MSG_CHECKING(for PTH - version >= $_req_version)

    for _var in _pth_version _req_version; do

        eval "_val=\"\$${_var}\""

        _major=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\1/'`

        _minor=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\2/'`

        _rtype=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\3/'`

        _micro=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\4/'`

        case $_rtype in

            "a" ) _rtype=0 ;;

            "b" ) _rtype=1 ;;

            "." ) _rtype=2 ;;

        esac

        _hex=`echo dummy | awk '{ printf("%d%02d%1d%02d", major, minor, rtype, micro); }' \

              "major=$_major" "minor=$_minor" "rtype=$_rtype" "micro=$_micro"`

        eval "${_var}_hex=\"\$_hex\""

    done

    have_pth=no

    if test ".$_pth_version_hex" != .; then

        if test ".$_req_version_hex" != .; then

            if test $_pth_version_hex -ge $_req_version_hex; then

                have_pth=yes

            fi

        fi

    fi

    if test $have_pth = yes; then

       AC_MSG_RESULT(yes)

       AC_MSG_CHECKING([whether PTH installation is sane])

       AC_CACHE_VAL(gnupg_cv_pth_is_sane,[

         _gnupg_pth_save_cflags=$CFLAGS

         _gnupg_pth_save_ldflags=$LDFLAGS

         _gnupg_pth_save_libs=$LIBS

         CFLAGS="$CFLAGS `$PTH_CONFIG --cflags`"

         LDFLAGS="$LDFLAGS `$PTH_CONFIG --ldflags`"

         LIBS="$LIBS `$PTH_CONFIG --libs`"

         AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pth.h>

                                         ],

                                         [[ pth_init ();]])],

                        gnupg_cv_pth_is_sane=yes,

                        gnupg_cv_pth_is_sane=no)

         CFLAGS=$_gnupg_pth_save_cflags

         LDFLAGS=$_gnupg_pth_save_ldflags

         LIBS=$_gnupg_pth_save_libs

       ])

       if test $gnupg_cv_pth_is_sane != yes; then

          have_pth=no

       fi

       AC_MSG_RESULT($gnupg_cv_pth_is_sane)

    else

       AC_MSG_RESULT(no)

    fi    

  ])