added xz toolchain step

build/xz/build.bash

@@ -0,0 +1,50 @@
+. "$PROJECTDIR/build/xz/package.env"
+
+fetch $XZ_URL
+
+
+cd "$SOURCES" && tar xf xz-$XZ_VERSION.tar.xz && cd xz-$XZ_VERSION
+
+
+bootstrap() {
+	echo bootstrap
+}
+
+
+toolchain() {
+	./configure \
+		--prefix=/usr \
+		--host=$TARGET \
+		--build=$(build-aux/config.guess) \
+		--disable-static > /dev/null
+
+	make > /dev/null && make DESTDIR="$SYSROOT" install > /dev/null 
+
+	rm "$SYSROOT/usr/lib/liblzma.la"
+}
+
+setup() {
+	echo setup
+}
+
+final() {
+	echo final
+}
+
+case $1 in 
+	bootstrap)
+		bootstrap
+		;;
+	toolchain)
+		toolchain
+		;;
+	setup)
+		setup
+		;;
+	final)
+		final
+		;;
+esac
+
+
+rm -rf "$SOURCES/xz-$XZ_VERSION"

build/xz/package.env

@@ -0,0 +1,7 @@
+export XZ_VERSION=5.8.2
+
+IFS='.' read -r XZ_VERSION_MAJOR XZ_VERSION_MINOR XZ_VERSION_PATCH <<< $XZ_VERSION
+export XZ_VERSION_MAJOR XZ_VERSION_MINOR XZ_VERSION_PATCH
+
+export XZ_URL=https://github.com//tukaani-project/xz/releases/download/v$XZ_VERSION/xz-$XZ_VERSION.tar.xz
+