CODEWITHSUNDEEP
makefilegnu-make
aerioeus
aerioeus

Reputation: 1410

Makefile Rule calls Rule - how to parse Variables at execution

I want to call another Rule that I have created to be used to serve multiple targets in my Makefile to create AWS Cloudformation Stacks. The Rule looks like this:

aws/create_stack:
   aws cloudformation create-stack \
   --stack-name $(stack_name) \
   --region $(region) \
   --capabilities CAPABILITY_IAM CAPABILITY_NAMED_IAM CAPABILITY_AUTO_EXPAND

I want to call the rule from another rule and define Variables for the rule at execution time like this:

aws/parameters: aws/create_stack
    $(MAKE) aws/create_stack stack_name=parameter region=$(REGION)

But for some reason when I execute the Makefile the Variables set in the receipe of the Caller Rule are not used by the first Rule I'm calling.

when I set the Variable separately outside of the Rule (aws/parameters) - it works. How do I have to re-write it to keep the Variable assignment in the Rule (aws/parameter)?

Thank you A

Upvotes: 0

Views: 108

Answers (2)

aerioeus
aerioeus

Reputation: 1410

As @Beta wrote you can use the "dependency approach"; a more condensed version looks like this:

aws/parameters: stack_name := parameter
aws/parameters: region := $(REGION)
was/parameters: aws/create_stack

Upvotes: 0

Beta
Beta

Reputation: 99124

There's no need to use recursion ($(MAKE) ...) here. Just use target-specific variables:

parameters: stack_name := parameter
parameters: region := $(REGION)
parameters: create_stack
    @echo parameters done

create_stack:
    @echo create_stack: stack_name is $(stack_name)
    @echo create_stack: region is $(region)

Upvotes: 1

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