# configure.ac for GPGME
# Copyright (C) 2000 Werner Koch (dd9jn)
# Copyright (C) 2001, 2002, 2003, 2004, 2005 g10 Code GmbH
# 
# This file is part of GPGME.
# 
# GPGME 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.
# 
# GPGME 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 
# (Process this file with autoconf to produce a configure script.)

AC_PREREQ(2.59)
min_automake_version="1.9.3"

# Version number: Remember to change it immediately *after* a release.
AC_INIT(gpgme, 1.1.0-cvs, [bug-gpgme@gnupg.org])
# LT Version numbers, remember to change them just *before* a release.
#   (Code changed:			REVISION++)
#   (Interfaces added/removed/changed:	CURRENT++, REVISION=0)
#   (Interfaces added:			AGE++)
#   (Interfaces removed/changed:	AGE=0)
#
LIBGPGME_LT_CURRENT=14
# Subtract 2 from this value if you want to make the LFS transition an
# ABI break.  [Note to self: Remove this comment with the next regular break.]
LIBGPGME_LT_AGE=3
LIBGPGME_LT_REVISION=3

# If the API is changed in an incompatible way: increment the next counter.
GPGME_CONFIG_API_VERSION=1

NEED_GPG_VERSION=1.2.2
NEED_GPGSM_VERSION=1.9.6
##############################################


PACKAGE=$PACKAGE_NAME
VERSION=$PACKAGE_VERSION

AC_CONFIG_SRCDIR(gpgme/gpgme.h)
dnl FIXME: Enable this with autoconf 2.59.
dnl AC_CONFIG_MACRO_DIR(m4)
AM_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE($PACKAGE, $VERSION)
AM_MAINTAINER_MODE
AC_CANONICAL_HOST

# Enable GNU extensions on systems that have them.
AC_GNU_SOURCE

AH_VERBATIM([_REENTRANT],
[/* To allow the use of GPGME in multithreaded programs we have to use
  special features from the library.
  IMPORTANT: gpgme is not yet fully reentrant and you should use it
  only from one thread.  */
#ifndef _REENTRANT
# define _REENTRANT 1
#endif])

AH_BOTTOM([
/* Some environments miss the definition for EOPNOTSUPP.  We provide
   the error code here and test where neded whether it should be
   defined.  Can't do the test here due to the order of includes.  */
#ifdef HAVE_W32_SYSTEM
#define VALUE_FOR_EOPNOTSUPP 95
#endif /*!HAVE_W32_SYSTEM*/

])


AC_PROG_CC


AC_SUBST(LIBGPGME_LT_CURRENT)
AC_SUBST(LIBGPGME_LT_AGE)
AC_SUBST(LIBGPGME_LT_REVISION)
AC_DEFINE_UNQUOTED(NEED_GPG_VERSION, "$NEED_GPG_VERSION",
				     [Min. needed GnuPG version.])
AC_DEFINE_UNQUOTED(NEED_GPGSM_VERSION, "$NEED_GPGSM_VERSION",
				       [Min. needed GPGSM version.])

AC_SUBST(PACKAGE)
AC_SUBST(VERSION)
AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of this package])
AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version of this package])

# Don't default to build static libs.
AC_DISABLE_STATIC
AC_PROG_LIBTOOL

# For now we hardcode the use of version scripts.  It would be better
# to write a test for this or even implement this within libtool.
have_ld_version_script=no
case "${host}" in
    *-*-linux*)
	have_ld_version_script=yes
        ;;
    *-*-gnu*)
	have_ld_version_script=yes
        ;;
esac
AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")

GPG_DEFAULT=no
GPGSM_DEFAULT=no
component_system=None
have_dosish_system=no
have_w32_system=no
case "${host}" in
    *-mingw32*)
        # special stuff for Windoze NT
	have_dosish_system=yes
        have_w32_system=yes
        GPG_DEFAULT='c:\\gnupg\\gpg.exe'
	# XXX Assuan is not supported in this configuration.
	#GPGSM_DEFAULT='c:\\gnupg\\gpgsm.exe'
        #component_system='COM+'
        ;;
    *)
	AC_CHECK_PTH(1.2.0,,,no,have_pth=yes)
	if test "$have_pth" = yes; then
	  AC_DEFINE(HAVE_PTH, ,[Define if we have Pth.])
	  CFLAGS="$CFLAGS $PTH_CFLAGS"
	fi
	AC_CHECK_LIB(pthread,pthread_create,have_pthread=yes)
	if test "$have_pthread" = yes; then
	  AC_DEFINE(HAVE_PTHREAD, ,[Define if we have pthread.])
	fi

	# XXX: Probably use exec-prefix here?
#	GPG_DEFAULT='/usr/bin/gpg'
#	GPGSM_DEFAULT='/usr/bin/gpgsm'
	;;
esac

if test "$have_dosish_system" = yes; then
   AC_DEFINE(HAVE_DOSISH_SYSTEM,1,
             [Defined if we run on some of the PCDOS like systems 
              (DOS, Windoze. OS/2) with special properties like
              no file modes])
fi
AM_CONDITIONAL(HAVE_DOSISH_SYSTEM, test "$have_dosish_system" = yes)

if test "$have_w32_system" = yes; then
   AC_DEFINE(HAVE_W32_SYSTEM,1, [Defined if we run on a W32 API based system])
fi
AM_CONDITIONAL(HAVE_W32_SYSTEM, test "$have_w32_system" = yes)


AM_CONDITIONAL(HAVE_PTH, test "$have_pth" = "yes")
AM_CONDITIONAL(HAVE_PTHREAD, test "$have_pthread" = "yes")


# Checks for header files.
AC_CHECK_HEADERS(sys/select.h)


# Type checks.
AC_CHECK_SIZEOF(unsigned int)
AC_SYS_LARGEFILE
AC_TYPE_OFF_T

# Checks for compiler features.
if test "$GCC" = yes; then
    CFLAGS="$CFLAGS -Wall -Wcast-align -Wshadow -Wstrict-prototypes"
fi


# Checks for library functions.
AC_FUNC_FSEEKO

AC_REPLACE_FUNCS(stpcpy)

AC_REPLACE_FUNCS(vasprintf)
if test "$ac_cv_func_vasprintf" != yes; then
  GNUPG_CHECK_VA_COPY
fi

# Try to find a thread-safe version of ttyname().
AC_REPLACE_FUNCS(ttyname_r)
if test "$ac_cv_func_ttyname_r" != yes; then
  AC_MSG_WARN([
***
*** ttyname() is not thread-safe and ttyname_r() does not exist
***])
fi

# Try to find a thread-safe version of getenv().
have_thread_safe_getenv=no
jm_GLIBC21
if test $GLIBC21 = yes; then
  have_thread_safe_getenv=yes
fi
if test $have_thread_safe_getenv = yes; then
  AC_DEFINE(HAVE_THREAD_SAFE_GETENV, [1], [Define if getenv() is thread-safe])
fi
have_getenv_r=no
AC_CHECK_FUNCS(getenv_r, have_getenv_r=yes)
if test $have_getenv_r = no && test $have_thread_safe_getenv = no; then
  AC_MSG_WARN([
***
*** getenv() is not thread-safe and getenv_r() does not exist
***])
fi

# For converting time strings to seconds since Epoch, we need the timegm
# function.
AC_CHECK_FUNCS(timegm)
if test "$ac_cv_func_timegm" != yes; then
  AC_MSG_WARN([
***
*** timegm() not available - a non-thread-safe kludge will be used
*** and the TZ variable might be changed at runtime.
***])
fi

# Checking for libgpg-error.
AM_PATH_GPG_ERROR(0.5,, AC_MSG_ERROR([libgpg-error was not found]))
AC_DEFINE(GPG_ERR_SOURCE_DEFAULT, GPG_ERR_SOURCE_GPGME,
          [The default error source for GPGME.])



# Checks for system services
NO_OVERRIDE=no
AC_ARG_WITH(gpg,
	    AC_HELP_STRING([--with-gpg=PATH], [use GnuPG binary at PATH]),
	    GPG=$withval, NO_OVERRIDE=yes)
if test "$NO_OVERRIDE" = "yes" || test "$GPG" = "yes"; then
  GPG=
  NO_OVERRIDE=yes
  if test "$cross_compiling" != "yes"; then
    AC_PATH_PROG(GPG, gpg)
  fi
  if test -z "$GPG"; then
    GPG="$GPG_DEFAULT"
  fi
fi
if test "$GPG" = no; then
  if test "$NO_OVERRIDE" = "yes"; then
    if test "$cross_compiling" != "yes"; then
      AC_MSG_WARN([
***
*** Could not find GnuPG, install GnuPG or use --with-gpg=PATH to enable it
***])
    else
      AC_MSG_ERROR([
***
*** Can not determine path to GnuPG when cross-compiling, use --with-gpg=PATH
***])
    fi
  fi
else
  AC_DEFINE_UNQUOTED(GPG_PATH, "$GPG", [Path to the GnuPG binary.])
  AC_SUBST(GPG)
fi
dnl Check for GnuPG version requirement.
GPG_VERSION=unknown
ok=maybe
if test -z "$GPG" -o "x$GPG" = "xno"; then
  ok=no
else
  if test "$cross_compiling" = "yes"; then
    AC_MSG_WARN([GnuPG version can not be checked when cross compiling])
    ok=no
  else
    if test ! -x "$GPG"; then
      AC_MSG_WARN([GnuPG not executable, version check disabled])
      ok=no
    fi
  fi
fi
if test "$ok" = "maybe"; then
  AC_MSG_CHECKING(for GnuPG >= $NEED_GPG_VERSION)
  req_major=`echo $NEED_GPG_VERSION | \
             sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
  req_minor=`echo $NEED_GPG_VERSION | \
	     sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
  req_micro=`echo $NEED_GPG_VERSION | \
	     sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
  gpg_version=`$GPG --version | grep ^gpg`
  major=`echo $gpg_version | \
	 sed 's/^gpg (GnuPG) \([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
  minor=`echo $gpg_version | \
	 sed 's/^gpg (GnuPG) \([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
  micro=`echo $gpg_version | \
	 sed 's/^gpg (GnuPG) \([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
  GPG_VERSION=`echo $gpg_version | sed 's/^gpg (GnuPG) //'`

  if test "$major" -gt "$req_major"; then
    ok=yes
  else
    if test "$major" -eq "$req_major"; then
      if test "$minor" -gt "$req_minor"; then
        ok=yes
      else
        if test "$minor" -eq "$req_minor"; then
          if test "$micro" -ge "$req_micro"; then
            ok=yes
	  fi
        fi
      fi
    fi
  fi
  if test "$ok" = "yes"; then
    AC_MSG_RESULT(yes)
  else
    AC_MSG_RESULT(no)
    AC_MSG_WARN([GnuPG must be at least version $NEED_GPG_VERSION])
  fi
fi
AM_CONDITIONAL(RUN_GPG_TESTS, test "$ok" = "yes")
AC_SUBST(GPG_PATH)

NO_OVERRIDE=no
AC_ARG_WITH(gpgsm,
	    AC_HELP_STRING([--with-gpgsm=PATH], [use GpgSM binary at PATH]),
	    GPGSM=$withval, NO_OVERRIDE=yes)
if test "$NO_OVERRIDE" = "yes" || test "$GPGSM" = "yes"; then
  GPGSM=
  NO_OVERRIDE=yes
  if test "$cross_compiling" != "yes"; then
    AC_PATH_PROG(GPGSM, gpgsm)
  fi
  if test -z "$GPGSM"; then
    GPGSM="$GPGSM_DEFAULT"
  fi
fi
if test "$GPGSM" = no; then
  if test "$NO_OVERRIDE" = "yes"; then
    if test "$cross_compiling" != "yes"; then
      AC_MSG_WARN([
***
*** Could not find GpgSM, install GpgSM or use --with-gpgsm=PATH to enable it
***])
    else
      AC_MSG_ERROR([
***
*** Can not determine path to GpgSM when cross-compiling, use --with-gpgsm=PATH
***])
    fi
  fi
else
  AC_DEFINE_UNQUOTED(GPGSM_PATH, "$GPGSM", [Path to the GPGSM binary.])
  AC_SUBST(GPGSM)
fi
AM_CONDITIONAL(HAVE_GPGSM, test "$GPGSM" != "no")
dnl Check for GPGSM version requirement.
GPGSM_VERSION=unknown
ok=maybe
if test -z "$GPGSM" -o "x$GPGSM" = "xno"; then
  ok=no
else
  if test "$cross_compiling" = "yes"; then
    AC_MSG_WARN([GPGSM version can not be checked when cross compiling])
    ok=no
  else
    if test ! -x "$GPGSM"; then
      AC_MSG_WARN([GPGSM not executable, version check disabled])
      ok=no
    fi
  fi
fi
if test "$ok" = "maybe"; then
  AC_MSG_CHECKING(for GPGSM >= $NEED_GPGSM_VERSION)
  req_major=`echo $NEED_GPGSM_VERSION | \
             sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
  req_minor=`echo $NEED_GPGSM_VERSION | \
	     sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
  req_micro=`echo $NEED_GPGSM_VERSION | \
	     sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
  gpgsm_version=`$GPGSM --version | grep ^gpgsm`
  major=`echo $gpgsm_version | \
	 sed 's/^gpgsm (GnuPG) \([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
  minor=`echo $gpgsm_version | \
	 sed 's/^gpgsm (GnuPG) \([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
  micro=`echo $gpgsm_version | \
	 sed 's/^gpgsm (GnuPG) \([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
  GPGSM_VERSION=`echo $gpgsm_version | sed 's/^gpgsm (GnuPG) //'`

  if test "$major" -gt "$req_major"; then
    ok=yes
  else
    if test "$major" -eq "$req_major"; then
      if test "$minor" -gt "$req_minor"; then
        ok=yes
      else
        if test "$minor" -eq "$req_minor"; then
          if test "$micro" -ge "$req_micro"; then
            ok=yes
	  fi
        fi
      fi
    fi
  fi
  if test "$ok" = "yes"; then
    AC_MSG_RESULT(yes)
  else
    AC_MSG_RESULT(no)
    AC_MSG_WARN([GPGSM must be at least version $NEED_GPGSM_VERSION])
  fi
fi
AM_CONDITIONAL(RUN_GPGSM_TESTS, test "$ok" = "yes")

# FIXME: Only build if supported.
AM_CONDITIONAL(BUILD_ASSUAN, test "$GPGSM" != "no")


# The assuan code uses funopen but it will also build without it.  So
# test for it.  Frankly, this is not required in gpgme, but thats the
# way we handle it in libassuan.
AC_CHECK_FUNCS(funopen)
if test $ac_cv_func_funopen != yes; then
    # No funopen but we can implement that in terms of fopencookie.
    AC_CHECK_FUNCS(fopencookie)
    if test $ac_cv_func_fopencookie = yes; then
        AC_LIBOBJ([funopen])
    else
        AC_MSG_WARN([
***
*** No implementation of fopencookie or funopen available
***])
    fi
fi

# More assuan replacement functions.
AC_REPLACE_FUNCS(isascii)
AC_REPLACE_FUNCS(putc_unlocked)
AC_REPLACE_FUNCS(memrchr)

# More assuan checks.
AC_CHECK_HEADERS([sys/uio.h])

# End of assuan checks.

AM_CONDITIONAL(BUILD_COMPLUS, test "$component_system" = "COM+")

# Make the version number in gpgme/gpgme.h the same as the one here.
# (this is easier than to have a *.in file just for one substitution)
GNUPG_FIX_HDR_VERSION(gpgme/gpgme.h, GPGME_VERSION)

# Substitution used for gpgme-config 
GPGME_CONFIG_LIBS="-lgpgme"
GPGME_CONFIG_CFLAGS=""
AC_SUBST(GPGME_CONFIG_API_VERSION)
AC_SUBST(GPGME_CONFIG_LIBS)
AC_SUBST(GPGME_CONFIG_CFLAGS)

# Frob'da Variables
LTLIBOBJS=`echo "$LIB@&t@OBJS" |
           sed 's,\.[[^.]]* ,.lo ,g;s,\.[[^.]]*$,.lo,'`
AC_SUBST(LTLIBOBJS)

#
# Create config files 

AC_CONFIG_FILES(Makefile assuan/Makefile gpgme/Makefile
		tests/Makefile tests/gpg/Makefile tests/gpgsm/Makefile
		doc/Makefile complus/Makefile)
AC_CONFIG_FILES(gpgme/gpgme-config, chmod +x gpgme/gpgme-config)
AC_OUTPUT

echo "
	GPGME v${VERSION} has been configured as follows:

	GnuPG path:    $GPG
        GnuPG version: $GPG_VERSION, min. $NEED_GPG_VERSION

	GpgSM path:    $GPGSM
        GpgSM version: $GPGSM_VERSION, min. $NEED_GPGSM_VERSION

	GPGME Pthread: $have_pthread
	GPGME Pth:     $have_pth
"