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Subject: Re: [edk2-devel] Printing git commit in build
To: devel@edk2.groups.io, udit.kumar@nxp.com
References: <VI1PR04MB46400306112CBA97739B4CD091170@VI1PR04MB4640.eurprd04.prod.outlook.com>
From: "Laszlo Ersek" <lersek@redhat.com>
Message-ID: <1cb32f45-fedb-cec2-2d6a-8d5f90efc475@redhat.com>
Date: Thu, 6 Jun 2019 10:25:20 +0200
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On 06/06/19 07:38, Udit Kumar wrote:
> Dear Community, 
> 
> I like to print git commit id, which printing UEFI firmware build information. 
> Could you help, how I can collect ' git describe' information in C file. 

I think you should be able to do this in the PREBUILD hook in the DSC file. (Run "git describe" in a script for generating a simple C source file.)


Another option would be to introduce a PCD in your platform package DEC file, with datum type (VOID*) and access method FixedAtBuild. For example:

[PcdsFixedAtBuild]
  gMyPlatformPkgTokenSpaceGuid.PcdBuildIdentifier|""|VOID*|<token>

and when you build your platform DSC, you could pass the following option to the "build" utility:

  --pcd=gMyPlatformPkgTokenSpaceGuid.PcdBuildIdentifier="$(git describe)"

Thanks
Laszlo