Try this rule (verified with GNU Make 4.2.1): 

  %.obj: $(filter %.src,$<)
    # obj dummy compiler
    @echo compile $< to $@
    cat $< > $@

[download]
Simpler/more brutal: Remove the %.src part from your original rule to compile anything into an *.obj file if all possible source files can be compiled by the same sequence of instructions.

In reply to Re: [OT] Making GNU make do what I mean by Perlbotics
in thread [OT] Making GNU make do what I mean by afoken

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