From 953b1f70df6439ff67e987148e62439d5495d2bb Mon Sep 17 00:00:00 2001
From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Fri, 23 Nov 2018 08:11:57 +0100
Subject: [PATCH] build/microsemi/libero_soc: remove previous impl directory if
 exists

---
 litex/build/microsemi/libero_soc.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/litex/build/microsemi/libero_soc.py b/litex/build/microsemi/libero_soc.py
index 657df3d64..720b7b581 100644
--- a/litex/build/microsemi/libero_soc.py
+++ b/litex/build/microsemi/libero_soc.py
@@ -237,6 +237,9 @@ class MicrosemiLiberoSoCPolarfireToolchain:
         
         # run
         if run:
+            # delete previous impl
+            if os.path.exists("impl"):
+                shutil.rmtree("impl")
             _run_script(script)
 
         os.chdir(cwd)