I would to be able to expand Gnu make variables and macros appearing in a text file using values of .VARIABLES in the current execution environment.
This in effect is using Gnu make as a kind of [Template processor](https://en.wikipedia.org/wiki/Template_processor). I find that this rule only copies the contents without expansion/interpolation %.expanded: % $(file >$@,$(file < $<)) However the following seems to do exactly what I desire: define \n := endef %.expanded: % $(file >$@,$(eval define .x:=${\n}$(file < $<)${\n}endef ${\n})${.x}) My question is whether this is the best/fastest way to do what I desire. Thoughts? Recommendations? Gothcas?
