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After building something with make I want to move all the files that end in .cache.{js,woff} to a sub folder.

(cd $(PFROOT)/PVWR2/gwt/pdfwebviewer/; \ mkdir -p cache_files; \ mv *.cache.{js,woff} sub_folder)

The problem is, when running make it seems to interpret *.cache.{js,woff} as a file name and not something dynamic and of course there is no file that has the explicit name *.cache.{js,woff}. When I just navigate to the folder and move it manually from the shell with above command it works without a hitch.

I understand it has to do with globbing but I don't know how to fix this.

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{...} is bash-specific syntax for brace expansion, but make uses /bin/sh by default instead of bash.

From info make, section 5.3.2:

The program used as the shell is taken from the variable SHELL. If this variable is not set in your makefile, the program /bin/sh is used as the shell.

If you want to use bash to parse shell constructs in your Makefile, you can add the following to the top:

SHELL := /bin/bash
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