fix gen-deps.sh for cross compilation

tools/gen-deps.sh

@@ -81,7 +81,7 @@ for dir in $(ls -1 src | grep -v ^include) ; do
       if echo $dep | grep -q -- \\.o$ ; then
         dep="src/$dir/$dep"
       fi
-      if echo $dep | grep -q -- '^\${.*_LIB}' ; then
+      if echo $dep | grep -q -e ^-l -e '^\${.*_LIB}' ; then
         libs="$libs $dep"
       else
         deps="$deps $dep"