Re: [edk2-devel] ASL build tools - EDKII trim tool questions

["Felix Polyudov" <felixp@ami.com>]

> -----Original Message-----
> From: devel@edk2.groups.io [mailto:devel@edk2.groups.io] On Behalf Of Schmauss, Erik
> Sent: Thursday, April 11, 2019 7:10 PM
> Subject: Re: [edk2-devel] ASL build tools - EDKII trim tool questions


> Yes, the current iASL preprocessor implementation is incomplete
> but we might be able to either develop our own or import an existing
> preprocessor if it has the correct license.

Eric,

It depends on the end goal.
If the goal is to display correct line numbers in the error messages, just adding support for #line directive is enough.
If the goal is to compile ASL file with a single iasl run without usage of other tools such as Trim, I don't think even having a full-fledged preprocessed would suffice.
In edk2, header files included into ASL files may contain C constructs, such as typedef's, alien to ASL compiler.
The Trim tool cleans them up prior to running IASL.
So even if iasl will be able to perform full preprocessing , Trim would still be required unless edk2 conventions are changed to require ASL-friendly include headers.

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