Re: [edk2-devel] MdeModulePkg build fails for AARCH64 on Ubuntu 22.04

["Ard Biesheuvel" <ardb@kernel.org>]

(cc Bob)

NOTE this affects the stable tag - please see below


On Sun, 21 Aug 2022 at 06:34, Rebecca Cran <rebecca@bsdio.com> wrote:
>
> I noticed that MdeModulePkg fails to build on my Ubuntu 22.04 system
> (and previously on the Ubuntu 20.04 installation). Is this a known bug?
>
> It shouldn't be relevant, but I'm using gcc version 11.2.0 (Ubuntu
> 11.2.0-17ubuntu1). But perhaps more relevant, I'm using Python 3.10.4.
>
> I'm trying to build commit e2ac68a23b4954d5c0399913a1df3dd9fd90315d.
>
>
> bcran@photon:~/src/tmp/edk2$ build -p MdeModulePkg/MdeModulePkg.dsc -a
> AARCH64 -t GCC5 -b RELEASE
> Build environment: Linux-5.15.0-46-generic-x86_64-with-glibc2.35
> Build start time: 22:29:18, Aug.20 2022
>
> WORKSPACE        = /home/bcran/src/tmp/edk2
> EDK_TOOLS_PATH   = /home/bcran/src/tmp/edk2/BaseTools
> CONF_PATH        = /home/bcran/src/tmp/edk2/Conf
> PYTHON_COMMAND   = /usr/bin/python3
>
>
> Processing meta-data
> .Architecture(s)  = AARCH64
> Build target     = RELEASE
> Toolchain        = GCC5
>
> Active Platform          =
> /home/bcran/src/tmp/edk2/MdeModulePkg/MdeModulePkg.dsc
>
>
> build.py...
> /home/bcran/src/tmp/edk2/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxPeiLib.inf(42):
> error 3000: PCD
> [gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode] in
> [/home/bcran/src/tmp/edk2/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxPeiLib.inf]
> is not found in dependent packages:
>                  /home/bcran/src/tmp/edk2/MdePkg/MdePkg.dec
>          /home/bcran/src/tmp/edk2/MdeModulePkg/MdeModulePkg.dec
>
>

This looks like a BaseTools regression to me - afaik, these packages
all used to build for AARCH64 in the past.

The following LockBoxLib resolutions appear in MdeModulePkg.dsc (with
line numbers)

115-[LibraryClasses.common.PEIM]
119:  LockBoxLib|MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxPeiLib.inf

178-[LibraryClasses.ARM, LibraryClasses.AARCH64]
181:  LockBoxLib|MdeModulePkg/Library/LockBoxNullLib/LockBoxNullLib.inf

No other [LlibraryClasses] references to SmmLockBoxPeiLib.inf exist in
that file, and the [Components] reference does not apply to AARCH64.

This means the DSC parser ends up using the earlier definition, which
I think is a bug, or at least a change in behavior. Note that doing
this silently could potentially break many platforms in subtle ways so
I think this should be root caused and preferably fixed before
creating the stable tag.