From 63c7dc536a97e8649689e7cdd2de17d12780e112 Mon Sep 17 00:00:00 2001
From: vanhofen <vanhofen@gmx.de>
Date: Mon, 22 Feb 2021 23:01:08 +0100
Subject: [PATCH] - prerequisites: do only checkout branches when BRANCH
 variables are active

---
 make/buildsystem-prerequisites.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/make/buildsystem-prerequisites.mk b/make/buildsystem-prerequisites.mk
index 36abd1b8..e00ebf20 100644
--- a/make/buildsystem-prerequisites.mk
+++ b/make/buildsystem-prerequisites.mk
@@ -169,8 +169,12 @@ ni-sources: $(SOURCE_DIR) \
 	$(SOURCE_DIR)/$(NI_STREAMRIPPER)
 
 checkout-branches:
+ifneq ($(FFMPEG_BRANCH),$(empty))
 	$(CD) $(SOURCE_DIR)/$(NI_FFMPEG); git checkout $(FFMPEG_BRANCH)
+endif
+ifneq ($(KERNEL_BRANCH),$(empty))
 	$(CD) $(SOURCE_DIR)/$(NI_LINUX_KERNEL); git checkout $(KERNEL_BRANCH)
+endif
 	$(CD) $(SOURCE_DIR)/$(NI_NEUTRINO); git checkout $(NEUTRINO_BRANCH)
 
 # -----------------------------------------------------------------------------