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dnl Autoconf macros for libgpgme
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dnl $Id: gpgme.m4,v 1.5 2002/08/23 19:48:30 werner Exp $
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dnl AM_PATH_GPGME([MINIMUM-VERSION,
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dnl               [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
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dnl Test for libgpgme and define GPGME_CFLAGS and GPGME_LIBS
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dnl
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AC_DEFUN(AM_PATH_GPGME,
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[ AC_ARG_WITH(gpgme-prefix,
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            AC_HELP_STRING([--with-gpgme-prefix=PFX],
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                           [prefix where GPGME is installed (optional)]),
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     gpgme_config_prefix="$withval", gpgme_config_prefix="")
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  if test x$gpgme_config_prefix != x ; then
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     gpgme_config_args="$gpgme_config_args --prefix=$gpgme_config_prefix"
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     if test x${GPGME_CONFIG+set} != xset ; then
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        GPGME_CONFIG=$gpgme_config_prefix/bin/gpgme-config
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     fi
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  fi
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  AC_PATH_PROG(GPGME_CONFIG, gpgme-config, no)
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  min_gpgme_version=ifelse([$1], ,0.3.9,$1)
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  AC_MSG_CHECKING(for GPGME - version >= $min_gpgme_version)
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  ok=no
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  if test "$GPGME_CONFIG" != "no" ; then
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    req_major=`echo $min_gpgme_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
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    req_minor=`echo $min_gpgme_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
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    req_micro=`echo $min_gpgme_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
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    gpgme_config_version=`$GPGME_CONFIG $gpgme_config_args --version`
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    major=`echo $gpgme_config_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
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    minor=`echo $gpgme_config_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
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    micro=`echo $gpgme_config_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
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    if test "$major" -gt "$req_major"; then
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        ok=yes
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    else 
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        if test "$major" -eq "$req_major"; then
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            if test "$minor" -gt "$req_minor"; then
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               ok=yes
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            else
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               if test "$minor" -eq "$req_minor"; then
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                   if test "$micro" -ge "$req_micro"; then
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                     ok=yes
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                   fi
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               fi
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            fi
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        fi
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    fi
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  fi
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  if test $ok = yes; then
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    GPGME_CFLAGS=`$GPGME_CONFIG $gpgme_config_args --cflags`
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    GPGME_LIBS=`$GPGME_CONFIG $gpgme_config_args --libs`
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    AC_MSG_RESULT(yes)
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    ifelse([$2], , :, [$2])
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  else
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    GPGME_CFLAGS=""
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    GPGME_LIBS=""
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    AC_MSG_RESULT(no)
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    ifelse([$3], , :, [$3])
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  fi
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  AC_SUBST(GPGME_CFLAGS)
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  AC_SUBST(GPGME_LIBS)
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])
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