[Compilation] error 4000: Instance of library class [RegisterFilterLib] is not found

[AkumaRRR]

c:\MyWorkspace>build -a X64 -t VS2019 -p EfiGuardPkg/EfiGuardPkg.dsc -b RELEASE Build environment: Windows-10-10.0.19041-SP0 Build start time: 10:14:37, Jun.28 2021

WORKSPACE = c:\myworkspace EDK_TOOLS_PATH = c:\myworkspace\basetools

Processing meta-data .EDK_TOOLS_BIN = c:\myworkspace\basetools\bin\win32 CONF_PATH = c:\myworkspace\conf PYTHON_COMMAND = py -3

Architecture(s) = X64 Build target = RELEASE Toolchain = VS2019

Active Platform = c:\myworkspace\EfiGuardPkg\EfiGuardPkg.dsc

build.py... c:\myworkspace\EfiGuardPkg\EfiGuardPkg.dsc(...): error 4000: Instance of library class [RegisterFilterLib] is not found in [c:\myworkspace\MdePkg\Library\BaseLib\BaseLib.inf] [X64] consumed by module [c:\myworkspace\EfiGuardPkg\EfiGuardDxe\EfiGuardDxe.inf]

• Failed - Build end time: 10:14:37, Jun.28 2021 Build total time: 00:00:00

[Mattiwatti]

Hi,

Yes, I was already aware of this and had an unpushed commit to fix this. The problem is that this build failure was caused by a recent change in EDK2 master, and that the (actually extremely trivial) fix I had to make for this breaks builds for people who are using a version of EDK2 from before the change was made, which is still quite recently.

The current latest EDK2 release edk2-stable202105 does now contain this change, so I've pushed the fix commit: see 6cd7810. So if you do a git pull and try again it should work.

Closing this since I assume it will be fixed for you, but otherwise just reopen and let me know.