revert Martins patch, it breaks the tarballs. <cite>Please test changes to the...

revert Martins patch, it breaks the tarballs. <cite>Please test changes to the build system before commit!</cite> ;-)

[[Imported from SVN: r5175]]

bin/dunecontrol

@@ -232,19 +232,21 @@ run_default_update () {
 run_default_autogen () {
   PARAMS="$CMD_PARAMS"
   local M4_PATH=""
-  for m in $FOUND_MODULES; do
-    path=$(eval "echo \$PATH_$m")
-    if test -d $path/m4; then
-      M4_PATH="$path $M4_PATH"
+  if test -x autogen.sh; then
+    for m in $FOUND_MODULES; do
+      path=$(eval "echo \$PATH_$m")
+      if test -d $path/m4; then
+        M4_PATH="$path $M4_PATH"
+      fi
+    done
+    if test -f autogen.sh; then
+      eval echo "WARNING: \$NAME_$module contains obsolete autogen.sh," \
+		  > /dev/stderr
+	  echo "         dune-autogen is used instead." > /dev/stderr
     fi
-  done
-  if test -f autogen.sh; then
-    eval echo "WARNING: \$NAME_$module contains obsolete autogen.sh," \
-                > /dev/stderr
-        echo "         dune-autogen is used instead." > /dev/stderr
-  fi
 #    eval ./autogen.sh "$M4_PATH" "$PARAMS" || exit 1
-  eval "$COMMAND_DIR/dune-autogen" "$M4_PATH" "$PARAMS" || exit 1
+    eval "$COMMAND_DIR/dune-autogen" "$M4_PATH" "$PARAMS" || exit 1
+  fi
 }
 
 run_default_configure () {