INPUT = $(wildcard *.toml) OUTPUT = $(patsubst %.toml, %.xml, $(INPUT)) ifeq ($(KERNEL_TREE),) $(error "must set KERNEL_TREE=/path/to/kernel/source") endif all: $(OUTPUT) kernel.version: s-kernel-version; @true .PHONY: s-kernel-version s-kernel-version: ./kernel_version.py $(KERNEL_TREE) > tmp-kernel.version if ! diff tmp-kernel.version kernel.version ; then \ mv tmp-kernel.version kernel.version; \ else \ rm tmp-kernel.version; \ fi touch s-kernel-version %.xml.tmp: %.toml kernel-config.py kernel_version.py kernel.version ./kernel-config.py $(KERNEL_TREE) $< > $@ %.xml: %.xml.tmp mv $< $@