Add OpenWrt and ChirpStack feed as submodules.

This fixes the openwrt and chirpstack-opwrt-feed packages to a specific
version, making the builds (more) reproducible.

Author: brocaar

.gitignore

@@ -1,5 +1,4 @@
-# OpenWrt
-/openwrt
+# Dist
 /dist
 
 # Hidden files

.gitmodules

@@ -0,0 +1,7 @@
+[submodule "openwrt"]
+	path = openwrt
+	url = https://github.com/openwrt/openwrt.git
+	branch = openwrt-23.05
+[submodule "feeds/chirpstack-openwrt-feed"]
+	path = feeds/chirpstack-openwrt-feed
+	url = https://github.com/chirpstack/chirpstack-openwrt-feed.git

Makefile

@@ -7,7 +7,8 @@ build:
 
 # Initialize the OpenWrt environment.
 init:
-	git clone --branch openwrt-23.05 https://github.com/openwrt/openwrt.git
+	git submodule init
+	git submodule update
 	cp feeds.conf.default openwrt/feeds.conf.default
 	ln -s ../conf/.config openwrt/.config
 	ln -s ../conf/files openwrt/files
@@ -17,8 +18,9 @@ init:
 
 # Update OpenWrt + package feeds.
 update:
+	git submodule update
+	cp feeds.conf.default openwrt/feeds.conf.default
 	cd openwrt && \
-		git pull && \
 		./scripts/feeds update -a && \
 		./scripts/feeds install -a
 

feeds.conf.default

@@ -1,4 +1,4 @@
 src-git packages https://git.openwrt.org/feed/packages.git;openwrt-23.05
 src-git luci https://git.openwrt.org/project/luci.git;openwrt-23.05
 src-git routing https://git.openwrt.org/feed/routing.git;openwrt-23.05
-src-git chirpstack https://github.com/chirpstack/chirpstack-openwrt-feed.git
+src-link chirpstack /workdir/feeds/chirpstack-openwrt-feed