diff --git a/.github/scripts/smoketests.sh b/.github/scripts/smoketests.sh
index fd4c600..4c7ccde 100755
--- a/.github/scripts/smoketests.sh
+++ b/.github/scripts/smoketests.sh
@@ -1,6 +1,8 @@
 #!/bin/bash
 set -ex
 
+bazel build cell_count
+
 echo These targets should have been pruned
 bazel query //:* | grep -q -v lb_32x128_1_synth
 bazel query //:* | grep -q -v lb_32x128_2_floorplan
diff --git a/BUILD b/BUILD
index 6ed9651..b8f9a5a 100644
--- a/BUILD
+++ b/BUILD
@@ -199,6 +199,16 @@ SWEEP = {
     script = ":report-wns.tcl",
 ) for variant in SWEEP]
 
+orfs_run(
+    name = "cell_count",
+    src = ":lb_32x128_floorplan",
+    outs = [
+        "test.txt",
+    ],
+    extra_args = "> $WORK_HOME/test.txt",
+    script = ":cell_count.tcl",
+)
+
 genrule(
     name = "wns_report",
     srcs = ["wns-report.py"] +
diff --git a/cell_count.tcl b/cell_count.tcl
new file mode 100644
index 0000000..0726aa6
--- /dev/null
+++ b/cell_count.tcl
@@ -0,0 +1,6 @@
+source $::env(SCRIPTS_DIR)/load.tcl
+load_design 2_floorplan.odb 2_floorplan.sdc
+
+report_clock_skew
+report_tns
+report_cell_usage
diff --git a/openroad.bzl b/openroad.bzl
index 7bee87e..31dc84c 100644
--- a/openroad.bzl
+++ b/openroad.bzl
@@ -601,7 +601,11 @@ def _run_impl(ctx):
             ctx.file._makefile.path,
             "run",
         ],
-        command = ctx.executable._make.path + " $@",
+        command = " ".join([
+            ctx.executable._make.path,
+            "$@",
+            ctx.expand_location(ctx.attr.extra_args, ctx.attr.data),
+        ]),
         env = _data_arguments(ctx) |
               odb_environment(ctx) |
               flow_environment(ctx) |
@@ -637,6 +641,10 @@ orfs_run = rule(
             mandatory = True,
             allow_empty = False,
         ),
+        "extra_args": attr.string(
+            mandatory = False,
+            default = "",
+        ),
     },
 )