$(file) can't read files

[Tim Murphy]

$(file) offers the ability to write files which saves one from tricks involving $(shell).  Calling $(shell) is very slow indeed in some makefiles.

$(shell cat filename) is also often used to read files into variables.

There isn't much reason why $(file <) shouldn't read a file though is there?   It would have the additional benefit of being platform independent.

I don't currently have permission to offer code but the implementation of $(file) should easily accomodate this:

output:=$(file <template.txt)

Regards

Tim

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