# SPDX-License-Identifier: EUPL-1.2+
# SPDX-FileCopyrightText: 2021-2024 Alyssa Ross <hi@alyssa.is>

# veritysetup format produces two files, but Make only (portably)
# supports one output per rule, so we combine the two outputs then
# define two more rules to separate them again.
build/rootfs.verity: $(ROOT_FS)
	mkdir -p build
	$(VERITYSETUP) format $(ROOT_FS) build/rootfs.verity.superblock.tmp \
	    | awk -F ':[[:blank:]]*' '$$1 == "Root hash" {print $$2; exit}' \
	    > build/rootfs.verity.roothash.tmp
	cat build/rootfs.verity.roothash.tmp build/rootfs.verity.superblock.tmp \
	    > $@
	rm build/rootfs.verity.roothash.tmp build/rootfs.verity.superblock.tmp
build/rootfs.verity.roothash: build/rootfs.verity
	head -n 1 build/rootfs.verity > $@
build/rootfs.verity.superblock: build/rootfs.verity
	{ read -r && cat;} < build/rootfs.verity > $@