diff -Nru autospec-1.4.17.org//lib/libspec.lib.in autospec-1.4.17/lib/libspec.lib.in
--- autospec-1.4.17.org//lib/libspec.lib.in	2010-05-02 22:17:42.000000000 +0200
+++ autospec-1.4.17/lib/libspec.lib.in	2010-07-02 23:06:02.245892733 +0200
@@ -657,6 +657,18 @@
     { # 'return' required if 'EXIT_FUNC' == 'return'
       notify.error $"specfile not found"": \`$specfile'"; return; }
 
+   # use rpm --specfile --specedit to create a preprocessed specfile
+   local specfile_preprocessed=$(mktemp -q -t libspec.XXXXXXXX) ||
+      notify.error $"can't create temporary files"
+
+   local rpmdefine_opts="\
+$(for i in `seq 1 1 ${#define_list_name[*]}`; do
+echo -n " --define=\"${define_list_name[$i-1]} ${define_list_value[$i-1]}\""
+done)"
+
+   eval "rpm -q --specfile --specedit $specfile $rpmdefine_opts >> $specfile_preprocessed" ||
+      notify.error $"rpm exited with error code \`$?'"
+
    [ -r "$infofile" ] && . $infofile
 
     # when this library is used by external scripts this assertion always fails
@@ -889,7 +901,7 @@
       ;;
       SPEC_TARGET)
          [ "$SPEC_TARGET" ] && continue
-         [ "$SPEC_NAME"   ] || specfile.getvars -s "$specfile" SPEC_NAME
+         [ "$SPEC_NAME"   ] || specfile.getvars -s "$specfile_preprocessed" SPEC_NAME
 
          local ifexpr ifexpr_level level boolexpr tok toksave filesname
          let "ifexpr_level = 0"   # level of nested %if statements
@@ -920,7 +932,7 @@
 
             case ${tok[0]} in
             %if)
-               #ifexpr=$(rpmvars.solve "${tok2}${fromtok3}" "$specfile")
+               #ifexpr=$(rpmvars.solve "${tok2}${fromtok3}" "$specfile_preprocessed")
                # note: if <%var> is undefined (not present) or set to "0"
                #       then the conditional expression is false else is true
                let "ifexpr_level += 1"
@@ -993,7 +1005,7 @@
                notify.debug "\
 $FUNCNAME: %file block found (${tok[*]})[line#$linenum]"
                filesname="$( \
-               rpmvars.solve "${tok[*]}" "$specfile" | \
+               rpmvars.solve "${tok[*]}" "$specfile_preprocessed" | \
                sed -n '
                # remove "%files" and "-f file-name" option if present
                s,%files[ \t]*,,;s,-f[ \t]\+[^ ]*[ \t]*,,;p' )"
@@ -1006,11 +1018,11 @@
                     filesname="$(echo $filesname | sed 's,-n[ \t]\+,,')"
                     SPEC_TARGET=( \
 ${SPEC_TARGET[*]} \
-"$(rpmvars.solve "$filesname" "$specfile")" )
+"$(rpmvars.solve "$filesname" "$specfile_preprocessed")" )
                ;;
                  *) SPEC_TARGET=(\
 ${SPEC_TARGET[*]} "$SPEC_NAME-$(\
-rpmvars.solve "$filesname" "$specfile")" )
+rpmvars.solve "$filesname" "$specfile_preprocessed")" )
                ;;
                esac
                notify.debug "$FUNCNAME: $var = ( ${SPEC_TARGET[*]} )"
@@ -1023,7 +1035,7 @@
                fi
             ;;
             esac
-         done < $specfile
+         done < $specfile_preprocessed
          #notify.debug "$FUNCNAME: $var = ( ${SPEC_TARGET[*]} )"
       ;;
       SPEC_OBSOLETES)
@@ -1032,7 +1044,7 @@
          # entries when no obsolete labels are found
 
          [ "$SPEC_OBSOLETES" ] && continue
-         [ "$SPEC_NAME" ] || specfile.getvars -s "$specfile" SPEC_NAME
+         [ "$SPEC_NAME" ] || specfile.getvars -s "$specfile_preprocessed" SPEC_NAME
 
          local linenum=0
          while read -r -a tok; do
@@ -1062,19 +1074,19 @@
                notify.debug "\
 $FUNCNAME: * entry found at line $linenum: \"${tok[*]}\""
                SPEC_OBSOLETES[${#SPEC_OBSOLETES[*]}]="\
-$(rpmvars.solve "${tok[*]}" "$specfile")"
+$(rpmvars.solve "${tok[*]}" "$specfile_preprocessed")"
 
                notify.debug "\
 $FUNCNAME: SPEC_OBSOLETES = ( ${SPEC_OBSOLETES[*]} )"
             ;;
             esac
-         done < $specfile
+         done < $specfile_preprocessed
 
        # SPEC_OBSOLETES=($(sed -n "\
        #    /^[ \t]*Obsoletes[ \t]*:/{
        #       s,[ \t]*Obsoletes[ \t]*:[ \t]*,,
        #       s,%[{]*name[}]*,$SPEC_NAME,;p}" \
-       #    $specfile))
+       #    $specfile_preprocessed))
 
          notify.debug "$FUNCNAME: $var = ( ${SPEC_OBSOLETES[*]} )"
       ;;
@@ -1095,7 +1107,7 @@
          [ "$SPEC_BUILDREQUIRES" ] && continue
          local f rpm_provided_by
          SPEC_BUILDREQUIRES=(`sed -n \
-'/^BuildRequires/{s,BuildRequires[ \t]*:[ \t]*,,p}' $specfile | \
+'/^BuildRequires/{s,BuildRequires[ \t]*:[ \t]*,,p}' $specfile_preprocessed | \
            (IFS="$IFS,"; while read -a buildreqs; do
                let "isver = 0"
                for f in ${buildreqs[@]}; do
@@ -1107,7 +1119,7 @@
                      let "isver = 1"
                   ;;
                   *%*) # rpm variable(s) (ex. '%{__install_info}')
-                     echo "$(rpmvars.solve "$f" $specfile) "
+                     echo "$(rpmvars.solve "$f" $specfile_preprocessed) "
                   ;;
                   *) echo "$f " ;;
                   esac
@@ -1154,6 +1166,7 @@
       ;;
       esac
    done
+   [ -e $specfile_preprocessed ] && rm -f $specfile_preprocessed
 }