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# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
# 2009, 2010, 2011 Free Software Foundation, Inc.
#
# Author: Nikos Mavrogiannopoulos, Simon Josefsson
#
# This file is part of GnuTLS.
#
# The GnuTLS is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public License
# as published by the Free Software Foundation; either version 2.1 of
# the License, or (at your option) any later version.
#
# The GnuTLS is distributed in the hope that it will be
# useful, but WITHOUT ANY WARRANTY; without even the implied warranty
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with GnuTLS; if not, write to the Free
# Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA

AC_DEFUN([LIBGNUTLS_EXTRA_HOOKS],
[
  AC_MSG_CHECKING([whether to build OpenSSL compatibility layer])
  AC_ARG_ENABLE(openssl-compatibility,
    AS_HELP_STRING([--disable-openssl-compatibility],
                   [disable the OpenSSL compatibility support]),
    enable_openssl=$enableval, enable_openssl=yes)
  AC_MSG_RESULT($enable_openssl)
  AM_CONDITIONAL(ENABLE_OPENSSL, test "$enable_openssl" = "yes")

  # We link to ../lib's gnulib, which needs -lws2_32 via LIBSOCKET in Makefile.am.
  gl_SOCKETS
])

AC_DEFUN([LIBGNUTLS_HOOKS],
[
  # Library code modified:                              REVISION++
  # Interfaces changed/added/removed:   CURRENT++       REVISION=0
  # Interfaces added:                             AGE++
  # Interfaces removed:                           AGE=0
  AC_SUBST(LT_CURRENT, 30)
  AC_SUBST(LT_REVISION, 0)
  AC_SUBST(LT_AGE, 2)

  AC_SUBST(LT_SSL_CURRENT, 27)
  AC_SUBST(LT_SSL_REVISION, 1)
  AC_SUBST(LT_SSL_AGE, 0)

  AC_SUBST(CXX_LT_CURRENT, 28)
  AC_SUBST(CXX_LT_REVISION, 0)
  AC_SUBST(CXX_LT_AGE, 0)

  AC_SUBST(CRYWRAP_PATCHLEVEL, 3)

  # Used when creating the Windows libgnutls-XX.def files.
  DLL_VERSION=`expr ${LT_CURRENT} - ${LT_AGE}`
  AC_SUBST(DLL_VERSION)

  cryptolib="nettle"

dnl  AC_ARG_WITH(libgcrypt,
dnl    AS_HELP_STRING([--with-libgcrypt], [use libgcrypt as crypto library]),
dnl      libgcrypt=$withval,
dnl      libgcrypt=no)
dnl    if test "$libgcrypt" = "yes"; then
dnl        cryptolib=libgcrypt
dnl        AC_DEFINE([HAVE_GCRYPT], 1, [whether the gcrypt library is in use])
dnl	AC_LIB_HAVE_LINKFLAGS([gcrypt], [gpg-error], [#include <gcrypt.h>],
dnl                      [enum gcry_cipher_algos i = GCRY_CIPHER_CAMELLIA128])
dnl      if test "$ac_cv_libgcrypt" != yes; then
dnl        AC_MSG_ERROR([[
dnl***  
dnl*** Libgcrypt v1.4.0 or later was not found. You may want to get it from
dnl*** ftp://ftp.gnupg.org/gcrypt/libgcrypt/
dnl***
dnl    ]])
dnl      fi
dnl    fi

  AC_MSG_CHECKING([whether to use nettle])
if test "$cryptolib" = "nettle";then
  AC_MSG_RESULT(yes)
    AC_LIB_HAVE_LINKFLAGS([nettle], [hogweed gmp], [#include <nettle/ripemd160.h>],
                          [ripemd160_init (0)])
    if test "$ac_cv_libnettle" != yes; then
      AC_MSG_ERROR([[
  *** 
  *** Libnettle 2.4 was not found. 
  ]])
    fi
else
  AC_MSG_RESULT(no)
fi
  AM_CONDITIONAL(ENABLE_NETTLE, test "$cryptolib" = "nettle")

  AC_ARG_WITH(included-libtasn1,
    AS_HELP_STRING([--with-included-libtasn1], [use the included libtasn1]),
      included_libtasn1=$withval,
      included_libtasn1=no)
  if test "$included_libtasn1" = "no"; then
    AC_LIB_HAVE_LINKFLAGS(tasn1,, [#include <libtasn1.h>],
                          [asn1_check_version (NULL)])
    if test "$ac_cv_libtasn1" != yes; then
      included_libtasn1=yes
      AC_MSG_WARN([[
  *** 
  *** Libtasn1 was not found. Will use the included one.
  ]])
    fi
  fi
  AC_MSG_CHECKING([whether to use the included minitasn1])
  AC_MSG_RESULT($included_libtasn1)
  AM_CONDITIONAL(ENABLE_MINITASN1, test "$included_libtasn1" = "yes")

  if test "$included_libtasn1" = "no"; then
    GNUTLS_REQUIRES_PRIVATE="Requires.private: libtasn1"
  fi

  AC_MSG_CHECKING([whether C99 macros are supported])
  AC_TRY_COMPILE(,
  [
    #define test_mac(...) 
    int z,y,x;
    test_mac(x,y,z);
    return 0;
  ], [
    AC_DEFINE([C99_MACROS], 1, [C99 macros are supported])
    AC_MSG_RESULT(yes)
  ], [
    AC_MSG_RESULT(no)
    AC_MSG_WARN([C99 macros not supported. This may affect compiling.])
  ])

  AC_MSG_CHECKING([whether to disable SRP authentication support])
  AC_ARG_ENABLE(srp-authentication,
    AS_HELP_STRING([--disable-srp-authentication],
                   [disable the SRP authentication support]),
    ac_enable_srp=no)
  if test x$ac_enable_srp != xno; then
   AC_MSG_RESULT(no)
   AC_DEFINE([ENABLE_SRP], 1, [enable SRP authentication])
  else
   ac_full=0
   AC_MSG_RESULT(yes)
  fi
  AM_CONDITIONAL(ENABLE_SRP, test "$ac_enable_srp" != "no")
  
  AC_MSG_CHECKING([whether to disable PSK authentication support])
  AC_ARG_ENABLE(psk-authentication,
    AS_HELP_STRING([--disable-psk-authentication],
                   [disable the PSK authentication support]),
    ac_enable_psk=no)
  if test x$ac_enable_psk != xno; then
   AC_MSG_RESULT(no)
   AC_DEFINE([ENABLE_PSK], 1, [enable PSK authentication])
  else
   ac_full=0
   AC_MSG_RESULT(yes)
  fi
  AM_CONDITIONAL(ENABLE_PSK, test "$ac_enable_psk" != "no")
  
  AC_MSG_CHECKING([whether to disable anonymous authentication support])
  AC_ARG_ENABLE(anon-authentication,
    AS_HELP_STRING([--disable-anon-authentication],
                   [disable the anonymous authentication support]),
    ac_enable_anon=no)
  if test x$ac_enable_anon != xno; then
   AC_MSG_RESULT(no)
   AC_DEFINE([ENABLE_ANON], 1, [enable anonymous authentication])
  else
   ac_full=0
   AC_MSG_RESULT(yes)
  fi
  AM_CONDITIONAL(ENABLE_ANON, test "$ac_enable_anon" != "no")
  
  AC_MSG_CHECKING([whether to disable extra PKI stuff])
  AC_ARG_ENABLE(extra-pki,
    AS_HELP_STRING([--disable-extra-pki],
                   [only enable the basic PKI stuff]),
    enable_pki=$enableval, enable_pki=yes)
  if test "$enable_pki" != "yes"; then
   ac_full=0
   AC_MSG_RESULT(yes)
  else
   AC_MSG_RESULT(no)
   AC_DEFINE([ENABLE_PKI], 1, [whether to include all the PKCS/PKI stuff])
  fi
  AM_CONDITIONAL(ENABLE_PKI, test "$enable_pki" = "yes")
  
  ac_enable_openpgp=yes
  AC_MSG_CHECKING([whether to disable OpenPGP Certificate authentication support])
  AC_ARG_ENABLE(openpgp-authentication,
    AS_HELP_STRING([--disable-openpgp-authentication],
                   [disable the OpenPGP authentication support]),
    ac_enable_openpgp=no)
  if test x$ac_enable_openpgp = xno; then
   AC_MSG_RESULT(yes)
   ac_full=0
  else
   AC_DEFINE([ENABLE_OPENPGP], 1, [use openpgp authentication])
   AC_MSG_RESULT(no)
  fi
  AM_CONDITIONAL(ENABLE_OPENPGP, test "$ac_enable_openpgp" = "yes")

  # For cryptodev
  AC_MSG_CHECKING([whether to add cryptodev support])
  AC_ARG_ENABLE(cryptodev,
    AS_HELP_STRING([--enable-cryptodev], [enable cryptodev support]),
  enable_cryptodev=yes,enable_cryptodev=no)
  AC_MSG_RESULT($enable_cryptodev)

  if test "$enable_cryptodev" = "yes"; then
    AC_DEFINE([ENABLE_CRYPTODEV], 1, [Enable cryptodev support])
  fi

  # For storing integers in pointers without warnings
  # http://developer.gnome.org/doc/API/2.0/glib/glib-Type-Conversion-Macros.html#desc
  AC_CHECK_SIZEOF(void *)
  AC_CHECK_SIZEOF(long)
  AC_CHECK_SIZEOF(int)
  case $ac_cv_sizeof_void_p in
    $ac_cv_sizeof_long)
      AC_DEFINE([GNUTLS_POINTER_TO_INT_CAST], [(long)],
                [Additional cast to bring void* to a type castable to int.])
      ;;
    *)
      AC_DEFINE([GNUTLS_POINTER_TO_INT_CAST], [])
      ;;
  esac
])