Intermittent errors building CoreCLR on Windows ARM

[eiriktsarpalis]

When building CoreCLR on Windows ARM I sometimes get a Failed to create virtual memory for PCH error. I'm using a Snapdragon X Elite 78-100 CPU with 32 GB RAM and building the repo inside a Dev Drive. A few examples:

  FAILED: utilcode/CMakeFiles/utilcode_dac.dir/stgpool.cpp.obj
  C:\PROGRA~1\MICROS~3\2022\Preview\VC\Tools\MSVC\1441~1.340\bin\Hostx86\arm64\cl.exe  /nologo /TP -DDACCESS_COMPILE -DDEBUGGING_SUPPORTED -DDISABLE_C
  ONTRACTS -DFEATURE_BASICFREEZE -DFEATURE_CODE_VERSIONING -DFEATURE_COLLECTIBLE_TYPES -DFEATURE_COMINTEROP -DFEATURE_COMINTEROP_APARTMENT_SUPPORT -DF
  EATURE_COMINTEROP_UNMANAGED_ACTIVATION -DFEATURE_COMWRAPPERS -DFEATURE_CORECLR -DFEATURE_DEFAULT_INTERFACES -DFEATURE_EH_FUNCLETS -DFEATURE_EVENT_TR
  ACE -DFEATURE_HIJACK -DFEATURE_ICASTABLE -DFEATURE_IJW -DFEATURE_INSTANTIATINGSTUB_AS_IL -DFEATURE_INTEROP_DEBUGGING -DFEATURE_ISYM_READER -DFEATURE
  _MANUALLY_MANAGED_CARD_BUNDLES -DFEATURE_METADATA_UPDATER -DFEATURE_MULTICOREJIT -DFEATURE_MULTIREG_RETURN -DFEATURE_ON_STACK_REPLACEMENT -DFEATURE_
  PERFTRACING -DFEATURE_PGO -DFEATURE_PORTABLE_SHUFFLE_THUNKS -DFEATURE_READYTORUN -DFEATURE_REJIT -DFEATURE_REMAP_FUNCTION -DFEATURE_SPECIAL_USER_MOD
  E_APC -DFEATURE_STANDALONE_GC -DFEATURE_STUBS_AS_IL -DFEATURE_SVR_GC -DFEATURE_SYMDIFF -DFEATURE_TIERED_COMPILATION -DFEATURE_TYPEEQUIVALENCE -DFEAT
  URE_USE_ASM_GC_WRITE_BARRIERS -DFEATURE_USE_SOFTWARE_WRITE_WATCH_FOR_GC_HEAP -DHOST_64BIT -DHOST_ARM64 -DHOST_WINDOWS -DNDEBUG -DNOMINMAX -DPROFILIN
  G_SUPPORTED_DATA -DSELF_NO_HOST -DTARGET_64BIT -DTARGET_ARM64 -DTARGET_WINDOWS -DUNICODE -DURTBLDENV_FRIENDLY=Retail -DWIN32 -DWIN32_LEAN_AND_MEAN -
  DWINVER=0x0602 -D_CRT_SECURE_NO_WARNINGS -D_FILE_OFFSET_BITS=64 -D_SECURE_SCL=0 -D_TIME_BITS=64 -D_UNICODE -D_WIN32 -D_WIN32_WINNT=0x0602 -IC:\Users
  \eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj\coreclr\windows.arm64.Release\utilcode -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\c
  oreclr\utilcode -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\native -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\native\inc -IC:\U
  sers\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\pal\prebuilt\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj -IC:\Users\
  eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\debug\inc -IC:\Users\eitsarpa\d
  evel\dotnet\runtime-baseline\src\coreclr\debug\inc\arm64 -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\debug\inc\dump -IC:\Users\eit
  sarpa\devel\dotnet\runtime-baseline\src\coreclr\md\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\classlibnative\bcltype -IC:\Use
  rs\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\classlibnative\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj\coreclr\win
  dows.arm64.Release\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\hosts\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src
  \coreclr\minipal -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj\coreclr\windows.arm64.Release\inc\etw /DWIN32 /D_WINDOWS  /GR- /O2
  /Ob2 /DNDEBUG -MT /GL /Ox /EHa /nologo /W4 /WX /Oi /Oy- /Gm- /Zp8 /Gy /GS /fp:precise /FC /MP /Zm200 /Zc:strictStrings /Zc:wchar_t /Zc:inline /Zc:fo
  rScope /wd4065 /wd4100 /wd4127 /wd4131 /wd4189 /wd4200 /wd4201 /wd4206 /wd4239 /wd4245 /wd4291 /wd4310 /wd4324 /wd4366 /wd4456 /wd4457 /wd4458 /wd44
  59 /wd4463 /wd4505 /wd4702 /wd4706 /wd4733 /wd4815 /wd4838 /wd4918 /wd4960 /wd4961 /wd5105 /wd5205 /we4007 /we4013 /we4102 /we4551 /we4640 /we4806 /
  we4055 /we4146 /we4242 /we4244 /we4267 /we4302 /we4308 /we4509 /we4510 /we4532 /we4533 /we4610 /we4611 /we4700 /we4701 /we4703 /we4789 /we4995 /we49
  96 /w34092 /w34121 /w34125 /w34130 /w34132 /w34212 /w34530 /w35038 /w44177 /Zi /ZH:SHA_256 /source-charset:utf-8 /guard:cf /Zl /YuC:/Users/eitsarpa/
  devel/dotnet/runtime-baseline/artifacts/obj/coreclr/windows.arm64.Release/utilcode/CMakeFiles/utilcode_dac.dir/cmake_pch.hxx /FpC:/Users/eitsarpa/de
  vel/dotnet/runtime-baseline/artifacts/obj/coreclr/windows.arm64.Release/utilcode/CMakeFiles/utilcode_dac.dir/./cmake_pch.cxx.pch /FIC:/Users/eitsarp
  a/devel/dotnet/runtime-baseline/artifacts/obj/coreclr/windows.arm64.Release/utilcode/CMakeFiles/utilcode_dac.dir/cmake_pch.hxx /showIncludes /Foutil
  code\CMakeFiles\utilcode_dac.dir\stgpool.cpp.obj /Fdutilcode\CMakeFiles\utilcode_dac.dir\utilcode_dac.pdb /FS -c C:\Users\eitsarpa\devel\dotnet\runt
  ime-baseline\src\coreclr\utilcode\stgpool.cpp
  c1xx: error C3859: Failed to create virtual memory for PCH
  c1xx: note: PCH: Unable to get the requested block of memory
  c1xx: note: consider using /Fp to allow the compiler to reserve the memory early
  c1xx: note: please visit https://aka.ms/pch-help for more details
  c1xx: fatal error C1076: compiler limit: internal heap limit reached

  [1092/2405] Building CXX object jit\CMakeFiles\clrjit_unix_x64_arm64.dir\likelyclass.cpp.obj
  FAILED: jit/CMakeFiles/clrjit_unix_x64_arm64.dir/likelyclass.cpp.obj
  C:\PROGRA~1\MICROS~3\2022\Preview\VC\Tools\MSVC\1441~1.340\bin\Hostx86\arm64\cl.exe  /nologo /TP -DDEBUGGING_SUPPORTED -DDISABLE_CONTRACTS -DFEATURE
  _BASICFREEZE -DFEATURE_CODE_VERSIONING -DFEATURE_COLLECTIBLE_TYPES -DFEATURE_COMINTEROP -DFEATURE_COMINTEROP_APARTMENT_SUPPORT -DFEATURE_COMINTEROP_
  UNMANAGED_ACTIVATION -DFEATURE_COMWRAPPERS -DFEATURE_CORECLR -DFEATURE_DEFAULT_INTERFACES -DFEATURE_EVENT_TRACE -DFEATURE_HIJACK -DFEATURE_HW_INTRIN
  SICS -DFEATURE_ICASTABLE -DFEATURE_IJW -DFEATURE_INSTANTIATINGSTUB_AS_IL -DFEATURE_INTEROP_DEBUGGING -DFEATURE_ISYM_READER -DFEATURE_MANUALLY_MANAGE
  D_CARD_BUNDLES -DFEATURE_MASKED_HW_INTRINSICS -DFEATURE_METADATA_UPDATER -DFEATURE_MULTICOREJIT -DFEATURE_MULTIREG_RETURN -DFEATURE_NO_HOST -DFEATUR
  E_ON_STACK_REPLACEMENT -DFEATURE_PERFTRACING -DFEATURE_PGO -DFEATURE_PORTABLE_SHUFFLE_THUNKS -DFEATURE_PROFAPI_ATTACH_DETACH -DFEATURE_READYTORUN -D
  FEATURE_REJIT -DFEATURE_REMAP_FUNCTION -DFEATURE_SIMD -DFEATURE_SPECIAL_USER_MODE_APC -DFEATURE_STANDALONE_GC -DFEATURE_STUBS_AS_IL -DFEATURE_SVR_GC
   -DFEATURE_SYMDIFF -DFEATURE_TIERED_COMPILATION -DFEATURE_TYPEEQUIVALENCE -DFEATURE_USE_ASM_GC_WRITE_BARRIERS -DFEATURE_USE_SOFTWARE_WRITE_WATCH_FOR
  _GC_HEAP -DFX_VER_INTERNALNAME_STR=clrjit_unix_x64_arm64.dll -DHOST_64BIT -DHOST_ARM64 -DHOST_WINDOWS -DJIT_BUILD -DNDEBUG -DNOMINMAX -DPROFILING_SU
  PPORTED -DSELF_NO_HOST -DTARGET_64BIT -DTARGET_AMD64 -DTARGET_UNIX -DTARGET_UNIX_ANYOS -DUNICODE -DUNIX_AMD64_ABI -DURTBLDENV_FRIENDLY=Retail -DWIN3
  2 -DWIN32_LEAN_AND_MEAN -DWINVER=0x0602 -DWITH_NATIVE_PGO -D_CRT_SECURE_NO_WARNINGS -D_FILE_OFFSET_BITS=64 -D_SECURE_SCL=0 -D_TIME_BITS=64 -D_UNICOD
  E -D_WIN32 -D_WIN32_WINNT=0x0602 -Dclrjit_unix_x64_arm64_EXPORTS -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj\coreclr\windows.arm
  64.Release\jit -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\jit -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\native -IC:\U
  sers\eitsarpa\devel\dotnet\runtime-baseline\src\native\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\pal\prebuilt\inc -IC:\Users
  \eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\inc -IC:\Users\eitsarpa\devel\do
  tnet\runtime-baseline\src\coreclr\debug\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\debug\inc\arm64 -IC:\Users\eitsarpa\devel\
  dotnet\runtime-baseline\src\coreclr\debug\inc\dump -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\md\inc -IC:\Users\eitsarpa\devel\do
  tnet\runtime-baseline\src\coreclr\classlibnative\bcltype -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\classlibnative\inc -IC:\Users
  \eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj\coreclr\windows.arm64.Release\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\corecl
  r\hosts\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\minipal -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj\co
  reclr\windows.arm64.Release\inc\etw -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\jit\.\jitstd -IC:\Users\eitsarpa\devel\dotnet\runt
  ime-baseline\src\coreclr\jit\..\inc /DWIN32 /D_WINDOWS  /GR- /O2 /Ob2 /DNDEBUG -MT /GL /Ox /EHa /nologo /W4 /WX /Oi /Oy- /Gm- /Zp8 /Gy /GS /fp:preci
  se /FC /MP /Zm200 /Zc:strictStrings /Zc:wchar_t /Zc:inline /Zc:forScope /wd4065 /wd4100 /wd4127 /wd4131 /wd4189 /wd4200 /wd4201 /wd4206 /wd4239 /wd4
  245 /wd4291 /wd4310 /wd4324 /wd4366 /wd4456 /wd4457 /wd4458 /wd4459 /wd4463 /wd4505 /wd4702 /wd4706 /wd4733 /wd4815 /wd4838 /wd4918 /wd4960 /wd4961
  /wd5105 /wd5205 /we4007 /we4013 /we4102 /we4551 /we4640 /we4806 /we4055 /we4146 /we4242 /we4244 /we4267 /we4302 /we4308 /we4509 /we4510 /we4532 /we4
  533 /we4610 /we4611 /we4700 /we4701 /we4703 /we4789 /we4995 /we4996 /w34092 /w34121 /w34125 /w34130 /w34132 /w34212 /w34530 /w35038 /w44177 /Zi /ZH:
  SHA_256 /source-charset:utf-8 /guard:cf /Zl /permissive- /YuC:/Users/eitsarpa/devel/dotnet/runtime-baseline/artifacts/obj/coreclr/windows.arm64.Rele
  ase/jit/CMakeFiles/clrjit_unix_x64_arm64.dir/cmake_pch.hxx /FpC:/Users/eitsarpa/devel/dotnet/runtime-baseline/artifacts/obj/coreclr/windows.arm64.Re
  lease/jit/CMakeFiles/clrjit_unix_x64_arm64.dir/./cmake_pch.cxx.pch /FIC:/Users/eitsarpa/devel/dotnet/runtime-baseline/artifacts/obj/coreclr/windows.
  arm64.Release/jit/CMakeFiles/clrjit_unix_x64_arm64.dir/cmake_pch.hxx /showIncludes /Fojit\CMakeFiles\clrjit_unix_x64_arm64.dir\likelyclass.cpp.obj /
  Fdjit\CMakeFiles\clrjit_unix_x64_arm64.dir\ /FS -c C:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\jit\likelyclass.cpp
  c1xx: error C3859: Failed to create virtual memory for PCH
  c1xx: note: PCH: Unable to get the requested block of memory
  c1xx: note: consider using /Fp to allow the compiler to reserve the memory early
  c1xx: note: please visit https://aka.ms/pch-help for more details
  c1xx: fatal error C1076: compiler limit: internal heap limit reached

  [892/2405] Building CXX object jit\CMakeFiles\clrjit.dir\codegenarm64.cpp.obj
  FAILED: jit/CMakeFiles/clrjit.dir/codegenarm64.cpp.obj
  C:\PROGRA~1\MICROS~3\2022\Preview\VC\Tools\MSVC\1441~1.340\bin\Hostx86\arm64\cl.exe  /nologo /TP -DDEBUGGING_SUPPORTED -DDISABLE_CONTRACTS -DFEATURE
  _BASICFREEZE -DFEATURE_CODE_VERSIONING -DFEATURE_COLLECTIBLE_TYPES -DFEATURE_COMINTEROP -DFEATURE_COMINTEROP_APARTMENT_SUPPORT -DFEATURE_COMINTEROP_
  UNMANAGED_ACTIVATION -DFEATURE_COMWRAPPERS -DFEATURE_CORECLR -DFEATURE_DEFAULT_INTERFACES -DFEATURE_EVENT_TRACE -DFEATURE_HIJACK -DFEATURE_HW_INTRIN
  SICS -DFEATURE_ICASTABLE -DFEATURE_IJW -DFEATURE_INSTANTIATINGSTUB_AS_IL -DFEATURE_INTEROP_DEBUGGING -DFEATURE_ISYM_READER -DFEATURE_MANUALLY_MANAGE
  D_CARD_BUNDLES -DFEATURE_MASKED_HW_INTRINSICS -DFEATURE_METADATA_UPDATER -DFEATURE_MULTICOREJIT -DFEATURE_MULTIREG_RETURN -DFEATURE_NO_HOST -DFEATUR
  E_ON_STACK_REPLACEMENT -DFEATURE_PERFTRACING -DFEATURE_PGO -DFEATURE_PORTABLE_SHUFFLE_THUNKS -DFEATURE_PROFAPI_ATTACH_DETACH -DFEATURE_READYTORUN -D
  FEATURE_REJIT -DFEATURE_REMAP_FUNCTION -DFEATURE_SIMD -DFEATURE_SPECIAL_USER_MODE_APC -DFEATURE_STANDALONE_GC -DFEATURE_STUBS_AS_IL -DFEATURE_SVR_GC
   -DFEATURE_SYMDIFF -DFEATURE_TIERED_COMPILATION -DFEATURE_TYPEEQUIVALENCE -DFEATURE_USE_ASM_GC_WRITE_BARRIERS -DFEATURE_USE_SOFTWARE_WRITE_WATCH_FOR
  _GC_HEAP -DFX_VER_INTERNALNAME_STR=clrjit.dll -DHOST_64BIT -DHOST_ARM64 -DHOST_WINDOWS -DJIT_BUILD -DNDEBUG -DNOMINMAX -DPROFILING_SUPPORTED -DSELF_
  NO_HOST -DTARGET_64BIT -DTARGET_ARM64 -DTARGET_WINDOWS -DUNICODE -DURTBLDENV_FRIENDLY=Retail -DWIN32 -DWIN32_LEAN_AND_MEAN -DWINVER=0x0602 -DWITH_NA
  TIVE_PGO -D_CRT_SECURE_NO_WARNINGS -D_FILE_OFFSET_BITS=64 -D_SECURE_SCL=0 -D_TIME_BITS=64 -D_UNICODE -D_WIN32 -D_WIN32_WINNT=0x0602 -Dclrjit_EXPORTS
   -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj\coreclr\windows.arm64.Release\jit -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline
  \src\coreclr\jit -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\native -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\native\inc -IC:\
  Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\pal\prebuilt\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj -IC:\Users
  \eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\debug\inc -IC:\Users\eitsarpa\
  devel\dotnet\runtime-baseline\src\coreclr\debug\inc\arm64 -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\debug\inc\dump -IC:\Users\ei
  tsarpa\devel\dotnet\runtime-baseline\src\coreclr\md\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\classlibnative\bcltype -IC:\Us
  ers\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\classlibnative\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj\coreclr\wi
  ndows.arm64.Release\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\hosts\inc -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\sr
  c\coreclr\minipal -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\artifacts\obj\coreclr\windows.arm64.Release\inc\etw -IC:\Users\eitsarpa\devel\do
  tnet\runtime-baseline\src\coreclr\jit\.\jitstd -IC:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\jit\..\inc /DWIN32 /D_WINDOWS  /GR- /O2
   /Ob2 /DNDEBUG -MT /GL /Ox /EHa /nologo /W4 /WX /Oi /Oy- /Gm- /Zp8 /Gy /GS /fp:precise /FC /MP /Zm200 /Zc:strictStrings /Zc:wchar_t /Zc:inline /Zc:f
  orScope /wd4065 /wd4100 /wd4127 /wd4131 /wd4189 /wd4200 /wd4201 /wd4206 /wd4239 /wd4245 /wd4291 /wd4310 /wd4324 /wd4366 /wd4456 /wd4457 /wd4458 /wd4
  459 /wd4463 /wd4505 /wd4702 /wd4706 /wd4733 /wd4815 /wd4838 /wd4918 /wd4960 /wd4961 /wd5105 /wd5205 /we4007 /we4013 /we4102 /we4551 /we4640 /we4806
  /we4055 /we4146 /we4242 /we4244 /we4267 /we4302 /we4308 /we4509 /we4510 /we4532 /we4533 /we4610 /we4611 /we4700 /we4701 /we4703 /we4789 /we4995 /we4
  996 /w34092 /w34121 /w34125 /w34130 /w34132 /w34212 /w34530 /w35038 /w44177 /Zi /ZH:SHA_256 /source-charset:utf-8 /guard:cf /Zl /permissive- /YuC:/U
  sers/eitsarpa/devel/dotnet/runtime-baseline/artifacts/obj/coreclr/windows.arm64.Release/jit/CMakeFiles/clrjit.dir/cmake_pch.hxx /FpC:/Users/eitsarpa
  /devel/dotnet/runtime-baseline/artifacts/obj/coreclr/windows.arm64.Release/jit/CMakeFiles/clrjit.dir/./cmake_pch.cxx.pch /FIC:/Users/eitsarpa/devel/
  dotnet/runtime-baseline/artifacts/obj/coreclr/windows.arm64.Release/jit/CMakeFiles/clrjit.dir/cmake_pch.hxx /showIncludes /Fojit\CMakeFiles\clrjit.d
  ir\codegenarm64.cpp.obj /Fdjit\CMakeFiles\clrjit.dir\ /FS -c C:\Users\eitsarpa\devel\dotnet\runtime-baseline\src\coreclr\jit\codegenarm64.cpp
  c1xx: error C3859: Failed to create virtual memory for PCH
  c1xx: note: PCH: Unable to get the requested block of memory
  c1xx: note: consider using /Fp to allow the compiler to reserve the memory early
  c1xx: note: please visit https://aka.ms/pch-help for more details
  c1xx: fatal error C1076: compiler limit: internal heap limit reached

cc @jkotas

[dotnet-policy-service]

Tagging subscribers to this area: @hoyosjs
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[jkotas]

Hostx86

I think this is likely the problem. You want to be using HostArm64 compilers for this, not the one running on 32-bit x86 emulator. Is there HostArm64 compiler on your machine?

eng\native\init-vs-env.cmd is probably the place to fix this.

[vcsjones]

Seems related to #96141

[eiriktsarpalis]

Is there HostArm64 compiler on your machine?

Yes, it's included by default in ARM installations of VS with the C++ tools.

eng\native\init-vs-env.cmd is probably the place to fix this.

What do you suggest? I tried following @tannergooding's recommendation from #76516 hardcoding __VCBuildArch to arm64 but then I started seeing the following in my build output:

  **********************************************************************
  ** Visual Studio 2022 Developer Command Prompt v17.11.0-pre.3.0
  ** Copyright (c) 2022 Microsoft Corporation
  **********************************************************************
  [vcvarsall.bat] Environment initialized for: 'arm64'
  BUILD: Commencing CoreCLR product build
  BUILD: Checking prerequisites
  BUILD: Using CMake from C:\Program Files\Microsoft Visual Studio\2022\Preview\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe
  'wmic' is not recognized as an internal or external command,
  operable program or batch file.
  BUILD: Number of processor cores 0
  BUILD: Commencing build of native components for windows.arm64.Release
  BUILD: Using environment: "C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Auxiliary\Build\vcvarsall.bat" x86_arm64
  **********************************************************************
  ** Visual Studio 2022 Developer Command Prompt v17.11.0-pre.3.0
  ** Copyright (c) 2022 Microsoft Corporation
  **********************************************************************
  [vcvarsall.bat] Environment initialized for: 'x86_arm64'
  BUILD: Regenerating the Visual Studio solution
  Calling "C:\Users\eitsarpa\devel\dotnet\runtime\eng\native\gen-buildsys.cmd" "C:\Users\eitsarpa\devel\dotnet\runtime\src\coreclr" "C:\Users\eitsarpa\devel\dotnet\runtime\artifacts\obj\coreclr\windows.arm64.Release" vs2022 arm64 windows "-DCMAKE_BUILD_TYPE=Release" "-DCLR_CMAKE
  _TARGET_ARCH=arm64" "-DCLR_CMAKE_TARGET_OS=windows" "-DCLI_CMAKE_FALLBACK_OS=win10" "-DCLR_CMAKE_PGO_INSTRUMENT=0" "-DCLR_CMAKE_OPTDATA_PATH=C:\Users\eitsarpa\.nuget\packages\optimization.windows_nt-arm64.pgo.coreclr\1.0.0-prerelease.24223.3" "-DCLR_CMAKE_PGO_OPTIMIZE=1" "-DCD
  AC_BUILD_TOOL_BINARY_PATH=C:\Users\eitsarpa\devel\dotnet\runtime\artifacts\bin\coreclr\windows.arm64.Release\cdac-build-tool\cdac-build-tool.dll" "-DCLR_DOTNET_HOST_PATH=C:\Program Files\dotnet\dotnet.exe"
  Not searching for unused variables given on the command line.
  -- The C compiler identification is MSVC 19.41.34021.0
  -- The CXX compiler identification is MSVC 19.41.34021.0

It appears to be trying to use arm64 but then is falling back to x86_arm64 again. I'm not entirely sure if this is caused by the wmic error message but that tool isn't present in my developer command prompt. According to documentation it's a deprecated utility.

[eiriktsarpalis]

I'm guessing this is the culprit?

runtime/src/coreclr/build-runtime.cmd

Lines 369 to 371 in f657459

	if /i "%__HostArch%" == "arm64" (
	set __VCTargetArch=x86_arm64
	)

[eiriktsarpalis]

After hardcoding __VCTargetArch to arm64 in both init-vs-env.cmd and build-runtime.cmd I can confirm that this resolved the issue for me, and also shaved 3 minutes off my build time. What isn't clear to me however is how we could fix the problem sustainably: it's very clear that at some point using the x86_arm64 tools was deemed preferable so I'm not sure who I could end up breaking by updating this.

[jkotas]

The native arm64 hosted compilers did not exist in the early days of arm64 port. Feel free to submit PR. I am not worried about it breaking anything.

[jkotas]

Also, you can delete the arm handling next to it. We do not support Windows arm32 anymore.