dnl Autoconf macros for libassuan

dnl Copyright (C) 2002, 2003, 2011 Free Software Foundation, Inc.

dnl

dnl This file is free software; as a special exception the author gives

dnl unlimited permission to copy and/or distribute it, with or without

dnl modifications, as long as this notice is preserved.

dnl

dnl This file is distributed in the hope that it will be useful, but

dnl WITHOUT ANY WARRANTY, to the extent permitted by law; without even the

dnl implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

dnl

dnl Common code used for libassuan detection [internal]

dnl Returns ok set to yes or no.

dnl

AC_DEFUN([_AM_PATH_LIBASSUAN_COMMON],

[ AC_REQUIRE([AC_CANONICAL_HOST])

  AC_ARG_WITH(libassuan-prefix,

              AC_HELP_STRING([--with-libassuan-prefix=PFX],

                             [prefix where LIBASSUAN is installed (optional)]),

     libassuan_config_prefix="$withval", libassuan_config_prefix="")

  if test x$libassuan_config_prefix != x ; then

    libassuan_config_args="$libassuan_config_args --prefix=$libassuan_config_prefix"

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

      LIBASSUAN_CONFIG=$libassuan_config_prefix/bin/libassuan-config

    fi

  fi

  AC_PATH_TOOL(LIBASSUAN_CONFIG, libassuan-config, no)

  tmp=ifelse([$1], ,1:0.9.2,$1)

  if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then

    req_libassuan_api=`echo "$tmp"     | sed 's/\(.*\):\(.*\)/\1/'`

    min_libassuan_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`

  else

    req_libassuan_api=0

    min_libassuan_version="$tmp"

  fi

  AC_MSG_CHECKING(for LIBASSUAN - version >= $min_libassuan_version)

  ok=no

  if test "$LIBASSUAN_CONFIG" != "no" \

     && test -f "$LIBASSUAN_CONFIG" ; then

    req_major=`echo $min_libassuan_version | \

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

    req_minor=`echo $min_libassuan_version | \

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

    req_micro=`echo $min_libassuan_version | \

               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`

    libassuan_config_version=`$LIBASSUAN_CONFIG --version`

    major=`echo $libassuan_config_version | \

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

    minor=`echo $libassuan_config_version | \

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

    micro=`echo $libassuan_config_version | \

               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`

    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

  fi

  if test $ok = yes; then

    AC_MSG_RESULT([yes ($libassuan_config_version)])

  else

    AC_MSG_RESULT(no)

  fi

  if test $ok = yes; then

    if test "$req_libassuan_api" -gt 0 ; then

      tmp=`$LIBASSUAN_CONFIG --api-version 2>/dev/null || echo 0`

      if test "$tmp" -gt 0 ; then

        AC_MSG_CHECKING([LIBASSUAN API version])

        if test "$req_libassuan_api" -eq "$tmp" ; then

          AC_MSG_RESULT(okay)

        else

          ok=no

          AC_MSG_RESULT([does not match.  want=$req_libassuan_api got=$tmp.])

        fi

      fi

    fi

  fi

  if test $ok = yes; then

    if test x"$host" != x ; then

      libassuan_config_host=`$LIBASSUAN_CONFIG --host 2>/dev/null || echo none`

      if test x"$libassuan_config_host" != xnone ; then

        if test x"$libassuan_config_host" != x"$host" ; then

  AC_MSG_WARN([[

***

*** The config script $LIBASSUAN_CONFIG was

*** built for $libassuan_config_host and thus may not match the

*** used host $host.

*** You may want to use the configure option --with-libassuan-prefix

*** to specify a matching config script.

***]])

        fi

      fi

    fi

  fi

])

dnl AM_CHECK_LIBASSUAN([MINIMUM-VERSION,

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

dnl Test whether libassuan has at least MINIMUM-VERSION. This is

dnl used to test for features only available in newer versions.

dnl

AC_DEFUN([AM_CHECK_LIBASSUAN],

[ _AM_PATH_LIBASSUAN_COMMON($1)

  if test $ok = yes; then

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

  else

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

  fi

])

dnl AM_PATH_LIBASSUAN([MINIMUM-VERSION,

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

dnl Test for libassuan and define LIBASSUAN_CFLAGS and LIBASSUAN_LIBS

dnl

AC_DEFUN([AM_PATH_LIBASSUAN],

[ _AM_PATH_LIBASSUAN_COMMON($1)

  if test $ok = yes; then

    LIBASSUAN_CFLAGS=`$LIBASSUAN_CONFIG $libassuan_config_args --cflags`

    LIBASSUAN_LIBS=`$LIBASSUAN_CONFIG $libassuan_config_args --libs`

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

  else

    LIBASSUAN_CFLAGS=""

    LIBASSUAN_LIBS=""

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

  fi

  AC_SUBST(LIBASSUAN_CFLAGS)

  AC_SUBST(LIBASSUAN_LIBS)

])