Use the $< automatic variable.
That's the name of the first prerequisite.
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6
Makefile
6
Makefile
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@ -122,14 +122,14 @@ raspi_4_bullseye.yaml: raspi_base_bullseye.yaml
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%.img.sha256: %.img
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echo $@
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sha256sum $(@:img.sha256=img) > $@
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sha256sum $< > $@
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%.img.xz.sha256: %.img.xz
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echo $@
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sha256sum $(@:img.xz.sha256=img.xz) > $@
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sha256sum $< > $@
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%.img.xz: %.img
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xz -f -k -z -9 $(@:.xz=)
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xz -f -k -z -9 $<
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%.img.bmap: %.img
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bmaptool create -o $@ $<
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