init_build_environment: improve build padjffs2

Avoid unnecessary traffic wastes.

Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>

Author: 1715173329

index.html

@@ -20,7 +20,7 @@
 1.7K May  8  2024 convert_translation.sh
 3.0K May  8  2024 create_acl_for_luci.sh
 3.7K May  8  2024 create_ucitrack_for_luci.sh
- 12K Feb  7 17:28 init_build_environment.sh
+ 12K Jun 16 16:07 init_build_environment.sh
  18K Jun  1  2023 LICENSE
 4.0K Feb  6 14:59 maintainer-tools
 4.7K Feb  6 15:05 maketag.sh
@@ -51,7 +51,7 @@
 1.5K Jun  1  2023 count-contributions.sh
 3.4K Jun  1  2023 github-apply.sh
 7.8K Feb  6 14:59 github-merge-pr.sh
-3.9K Nov 14 12:14 makebranch.sh
+3.9K Nov 14  2024 makebranch.sh
  24K Jun  1  2023 make-changelog.pl
 5.9K Jun  1  2023 make-signatures.pl
 4.7K Jun  1  2023 maketag.sh

init_build_environment.sh

@@ -262,17 +262,11 @@ function install_dependencies() {
 	chmod 0755 "/usr/bin/upx-ucl"
 	ln -svf "/usr/bin/upx-ucl" "/usr/bin/upx"
 
-	git clone --filter=blob:none --no-checkout "https://github.com/openwrt/openwrt.git" "padjffs2"
-	pushd "padjffs2"
-	git config core.sparseCheckout true
-	echo "tools/padjffs2/src" >> ".git/info/sparse-checkout"
-	git checkout
-	cd "tools/padjffs2/src"
-	make
+	curl -fLO "https://raw.githubusercontent.com/openwrt/openwrt/main/tools/padjffs2/src/padjffs2.c"
+	gcc -Wall -Werror -o "padjffs2" "padjffs2.c"
 	strip "padjffs2"
-	rm -rf "/usr/bin/padjffs2"
+	rm -rf "padjffs2.c" "/usr/bin/padjffs2"
 	cp -fp "padjffs2" "/usr/bin/padjffs2"
-	popd
 
 	git clone --filter=blob:none --no-checkout "https://github.com/openwrt/luci.git" "po2lmo"
 	pushd "po2lmo"