Building contracts with different compiler settings

[drortirosh]

Component

Forge

Describe the feature you would like

Currenlty forge build uses a single configuration settings for all compiled contracts.
In our project, we need to compile the production code (2 contracts) using via-ir, but all the supporting contracts without.

We currently use hardhat configuration with specific "configuration override" for just those 2 contracts.

It would be nice if forge supported such configuration too.

Additional context

No response

[drortirosh]

Is there any plan to implement this feature?
Having few production contracts an a lot of surrounding test contracts is a common practice.
Current (single-compiler settings) require either very slow project compilation, since all tests (and unused library contracts) are required to be optimized, or testing the production code in un-optimized build - which makes the tests incomplete, and gas tests unusable.

[arr00]

Would like this feature as well

[CodeSandwich]

Another reason to tune the compiler for specific contracts is that some of them need to be compiled into a small bytecode, but they shouldn't force all the contracts in the project to get poor runtime optimization.

• Some contracts are just large, and must have a lower optimizer_runs to fit in the 24576B size limit.
• Some contracts are designed to be deployed multiple times by the end users, they too should be optimized for small deployment size, because the gas savings coming from high optimizer_runs may never recoup the higher deployment costs.

[KholdStare]

@mattsse Any thoughts on this? We're running into this where we have a few contracts, and one is quite large and just over the limit on the our optimizer setting. It would be nice to override the profile settings per contract.

[zerosnacks]

Related: #6099