Thanks Leif and Joey. :) As suggested, I used the following content in the DSC file to pass all the builds: [Defines.IA32] OUTPUT_DIRECTORY = Build/UefiPayloadPkgIA32 FLASH_DEFINITION = UefiPayloadPkg/UefiPayloadPkg.fdf [Defines.X64] OUTPUT_DIRECTORY = Build/UefiPayloadPkgX64 FLASH_DEFINITION = UefiPayloadPkg/UefiPayloadPkg.fdf [Defines.AARCH64] OUTPUT_DIRECTORY = Build/UefiPayloadPkgAARCH64 FLASH_DEFINITION = UefiPayloadPkg/UefiPayloadPkg.fdf I have tried following build commands, they all succeed to build corresponding binaries: 1. build -p UefiPayloadPkg/UefiPayloadPkg.dsc -b DEBUG -a IA32 -a X64 -a AARCH64 -t GCC5 2. python UefiPayloadPkg/UniversalPayloadBuild.py -t GCC5 -b DEBUG --FIT 3. python UefiPayloadPkg/UniversalPayloadBuild.py -t GCC5 -a IA32 -b DEBUG --FIT 4. python UefiPayloadPkg/UniversalPayloadBuild.py -t GCC5 -a AARCH -b DEBUG --FIT Now I am creating a new draft PR to fix all github CI failures which are not generated in my local. Thanks again for your help. > From: "Leif Lindholm" > Date: Wed, Jan 8, 2025, 4:14 AM > Subject: Re: [EXTERNAL] [edk2-devel] Expansion of ARCH in .dsc files > To: "Joey Vagedes" > Cc: "devel@edk2.groups.io", "Ajan Zhong", "Ard Biesheuvel", "Kinney, Michael D" > Hi Joey, > > I appreciate the pointer. > However, that's the .inf spec. > > The same language is not in the corresponding section of > https://tianocore-docs.github.io/edk2-DscSpecification/release-1.28/3_edk_ii_dsc_file_format/35_[defines]_section.html#35-defines-section > > Regards, > > Leif > > On Tue, 7 Jan 2025 at 19:43, Joey Vagedes wrote: > > > > Leif, > > > > For your awareness, Section 3.4 of the INF specification states that architectural modifiers for the [Defines] section tag are not permitted. > > > > So that you can Ctrl+F and to find the exact language, here is a quote: > > > > "architectural modifiers for the [Defines] section tag are not permitted" > > > > https://tianocore-docs.github.io/edk2-InfSpecification/release-1.27/3_edk_ii_inf_file_format/34_[defines]_section.html#34-defines-section > > > > Thanks, > > Joey > > > > -----Original Message----- > > From: devel@edk2.groups.io On Behalf Of Leif Lindholm via groups.io > > Sent: Tuesday, January 7, 2025 11:05 AM > > To: devel@edk2.groups.io > > Cc: Ajan Zhong ; Ard Biesheuvel ; Kinney, Michael D > > Subject: [EXTERNAL] [edk2-devel] Expansion of ARCH in .dsc files > > > > So... I originally tripped over my misunderstanding of when writing > > https://github.com/tianocore/edk2/pull/6262 to get around something I wanted to test in UefiPayloadPkg. > > > > Now Ajan has run into at least an adjacent problem when trying to rework > > https://github.com/tianocore/edk2/pull/6545 based on feedback I among others provided. > > > > Now, the thing I had misunderstood before is that when build is called with multiple -a options, the ARCH variable will expand to a space-separated list of *all* the specified architectures. > > A lot of Arm/AArch64 modules assume this variable only ever contains a single architecture. > > > > The thing is, I don't think this is clearly documented in the .dsc specification at all. And it is frequently used as a shorthand in there in a form that would only work if build was called with a single -a. > > Now, this also means that there are nearly no correct users of ARCH in > > edk2 or edk2-platforms. > > Because "the list of all architectures being built simultaneously" > > simply isn't very useful information > > build-time. There are two correct uses in edk2, in EmulatorPkg.dsc and in UefiPayloadPkg.dsc, using '!if "IA32" in "$ARCH"', which as far as I can tell is the only possible way to use the variable correctly. > > Slightly amusingly, EmulatorPkg.dsc also contains an incorrect use. > > > > I guess the behaviour is a direct result of how the build command is architected. > > I guess the one question I have is - is this the intended behaviour? > > > > Ard: I think we need to update some of our .dsc files... > > > > Ajan: one somewhat hacky workaround I can think of to separate the output images is to hardcode the output image name in arch-specific Defines sections, like so: > > > > diff --git a/ArmVirtPkg/ArmVirtQemu.dsc b/ArmVirtPkg/ArmVirtQemu.dsc index 0bd8d85cab03..f07f2b91764e 100644 > > --- a/ArmVirtPkg/ArmVirtQemu.dsc > > +++ b/ArmVirtPkg/ArmVirtQemu.dsc > > @@ -12,12 +12,17 @@ > >  # Defines Section - statements that will be processed to create a Makefile. > >  # > >  ################################################################################ > > +[Defines.ARM] > > +  OUTPUT_DIRECTORY               = Build/ArmVirtQemu-ARM > > + > > +[Defines.AARCH64] > > +  OUTPUT_DIRECTORY               = Build/ArmVirtQemu-AARCH64 > > + > >  [Defines] > >    PLATFORM_NAME                  = ArmVirtQemu > >    PLATFORM_GUID                  = 37d7e986-f7e9-45c2-8067-e371421a626c > >    PLATFORM_VERSION               = 0.1 > >    DSC_SPECIFICATION              = 0x00010005 > > -  OUTPUT_DIRECTORY               = Build/ArmVirtQemu-$(ARCH) > >    SUPPORTED_ARCHITECTURES        = AARCH64|ARM > >    BUILD_TARGETS                  = DEBUG|RELEASE|NOOPT > >    SKUID_IDENTIFIER               = DEFAULT > > > > > > > > > > > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. 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