I have variables set in an env file called by my Makefile. I would like to choose a set variable based on an environment condition. Is there a way to nest two variables to make a new variable?
Example env file
VER=11 make build
Example Makefile (Not working obviously)
.PHONY: all .PHONY: build .PHONY: clean .PHONY: help .PHONY: test include env build: ## Build build: docker image build --pull -t container:file-version-$(VER) --build-arg FILE_VERSION=$(FILE_VERSION_$VER)
Hoping to have the
$(FILE_VERSION) variable now be rewritten as
$(FILE_VERSION_11) so that 11.0.4 can be passed to the docker build via the
FILE_VERSION_11 env variable.