SMQ-2831 - Fix Makefile '@unset' incompatibility on macOS

[nintran52]

What type of PR is this?

This is a bug fix because it resolves issue #2831 where using @unset in Makefile caused errors or had no effect depending on the platform.

What does this do?

• Replaces @unset with $(eval) in Makefile rules (check_tls and check_mtls)
• Ensures variables like GRPC_TLS and GRPC_MTLS are properly unset within Makefile's scope
• Makes the logic portable and predictable across Linux, macOS, and Windows environments

Which issue(s) does this PR fix/relate to?

• Related Issue Bug: Makefile fails with '@unset' – not recognized across all environments #2831
• Resolves #

Have you included tests for your changes?

No, because this change affects Makefile logic used at build/config time, which is not covered by unit tests. Manual testing confirms cross-platform compatibility.

Did you document any new/modified feature?

No documentation changes were needed as this is an internal bug fix for script logic.

Notes

This fix is important for developers running make run or related commands in environments like macOS or CI/CD systems. It eliminates a class of non-portable shell commands inside the Makefile.

[nintran52]

@dborovcanin could you take a look

[dborovcanin]

Hello, @nintran52. Thanks for the contribution. I could not test it with MacOS, but I'll trust you with it. :) However, I tested on Linux, and it looks like this PR breaks the Makefile for Linux:

GRPC_TLS=true make run args=-d
Makefile:229: *** missing separator.  Stop.

Can you try something like this, instead?

check_tls:
ifeq ($(GRPC_TLS),true)
	@echo "gRPC TLS is enabled"
	$(eval GRPC_MTLS :=)
else
	$(eval GRPC_TLS :=)
endif

check_mtls:
ifeq ($(GRPC_MTLS),true)
	@echo "gRPC MTLS is enabled"
	$(eval GRPC_TLS :=)
else
	$(eval GRPC_MTLS :=)
endif

This works on Linux, but I can't test it on MacOS.

[nintran52]

@dborovcanin I updated

[dborovcanin]

It looks like you are using spaces, please replace them with tabs since Make only accepts tabs.

[nintran52]

I replaced spaces with tabs for the file @dborovcanin