The automake files of my project may or may not define CLEANFILES, they then include an automake snippet which conditionally appends a file to CLEANFILES. I can't use either = or += because I get either
flash-image.am:4: CLEANFILES must be set with `=' before using `+=' or flash-image.am:4: CLEANFILES was already defined in condition TRUE, which includes condition FLASH_IMAGE ... How do I append to CLEANFILES in an included automake snippet? Please cc me in your reply. Thanks, Shaun