dnl Autoconf macros for libassuan
dnl       Copyright (C) 2002, 2003 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 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],
[ 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_PROG(LIBASSUAN_CONFIG, libassuan-config, no)
  min_libassuan_version=ifelse([$1], ,0.0.1,$1)
  AC_MSG_CHECKING(for LIBASSUAN - version >= $min_libassuan_version)
  ok=no
  if test "$LIBASSUAN_CONFIG" != "no" ; 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 $libassuan_config_args --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 $ok = yes; then
    LIBASSUAN_CFLAGS=`$LIBASSUAN_CONFIG $libassuan_config_args --cflags`
    LIBASSUAN_LIBS=`$LIBASSUAN_CONFIG $libassuan_config_args --libs`
    AC_MSG_RESULT(yes)
    ifelse([$2], , :, [$2])
  else
    LIBASSUAN_CFLAGS=""
    LIBASSUAN_LIBS=""
    AC_MSG_RESULT(no)
    ifelse([$3], , :, [$3])
  fi
  AC_SUBST(LIBASSUAN_CFLAGS)
  AC_SUBST(LIBASSUAN_LIBS)
])