Re: [edk2-devel] [edk2] DSC file : override FILE_GUID rule

["Liming Gao" <liming.gao@intel.com>]

In FDF, you also need to specify this file guid and match the one in DSC. The syntax is like below:

INF FILE_GUID= D1D74FE9-7A4E-41D3-A0B3-67F13AD34D94 UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf

Thanks
Liming
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Laszlo Ersek
> Sent: Thursday, November 7, 2019 6:56 PM
> To: devel@edk2.groups.io; tigerliu@zhaoxin.com
> Subject: Re: [edk2-devel] [edk2] DSC file : override FILE_GUID rule
> 
> On 11/07/19 05:51, Tiger Liu(BJ-RD) wrote:
> > Dear All:
> > I have a question about FILE_GUID override rule in dsc file.
> > For example:
> >   ......
> >   UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf {
> >     <Defines>
> >       FILE_GUID = D1D74FE9-7A4E-41D3-A0B3-67F13AD34D94
> >     ......
> >   }
> >
> > Usually, will define FILE_GUID in PiSmmCpuDxeSmm.inf .
> >
> > Why override it in dsc file?
> 
> IIRC, such overrides allow the platform DSC file to build the same
> module multiple times, most likely with other overrides too (such as PCD
> and lib class resolution). The resultant binaries will not conflict in
> any firmware volume / firmware file-system, by FILE_GUID.
> 
> I don't remember the syntax, to be used in the FDF file, for refering to
> all of the builds of the same module INF file.
> 
> Thanks
> Laszlo
> 
> 
>