Map/Dictionary in Makefiles

[bahmanm]

It would be useful to have a dictionary to group related variables/values, either statically or dynamically.

For example:

$(call dict.put,DEPLOY,env,prod)
$(call dict.put,DEPLOY,service,accounts)
$(call dict.put,DEPLOY,host,accounts.my-cool-product.com)
$(call dict.put,DEPLOY,gpg-key,992443840122)

$(call dict.put,BUILD,arch,x86_64)
$(call dict.put,BUILD,dir,/tmp/my-app/build)

---

It can, of course, be provided to work as a target:

define-config : dict.put( DEPLOY,env,prod )
define-config : dict.put( DEPLOY,service,accounts )
define-config : dict.put( DEPLOY,host,accounts.my-cool-product.com )
define-config : dict.put( DEPLOY,gpg-key,992443840122 )

deploy : define-config
deploy : 
	/usr/bin/deploy \
		--env $(call dict.get,DEPLOY,env) \
		--server $(call dict.get,DEPLOY,service) \
		$(call dict.get,DEPLOY,host)