[llvm-dev] LLVM Build on Windows 10

[Stella Laurenzo via llvm-dev]

Could you post the exact commands you are using for initializing your
vcvars and configuring cmake? I haven't built LLVM on Windows in recent
weeks but do have some experience with it.

My suspicion is that you have initialized the vcvars in some way so that it
is doing 32bit builds/using 32bit compiler tools. I exclusively build x64
configurations on Windows, and I suspect the error is exactly what it says:
the 32bit linker cannot access enough heap to finish. A quick search online
suggests that the automatic fail over to a 64bit linker may be a bit
unreliable.

On Sat, Mar 6, 2021, 12:47 PM Paul C. Anagnostopoulos via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> I uninstalled Cmake 2.20 and installed 2.19. Then I could make some
> progress. My build is now hanging after a series of the following messages.
> I mean really hanging; I have to blow away the process. Does anyone know
> what a PDB error is?
> [18/356] Linking CXX executable bin\llc.exe
> FAILED: bin/llc.exe
> cmd.exe /C "cd . && "C:\Program Files\CMake\bin\cmake.exe" -E vs_link_exe
> --intdir=tools\llc\CMakeFiles\llc.dir
> --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100183~1.0\x86\rc.exe
> --mt=C:\PROGRA~2\WI3CF2~1\10\bin\100183~1.0\x86\mt.exe --manifests  --
> C:\PROGRA~2\MICROS~2\2019\COMMUN~1\VC\Tools\MSVC\1428~1.293\bin\Hostx86\x86\link.exe
> /nologo @CMakeFiles\llc.rsp  /out:bin\llc.exe /implib:lib\llc.lib
> /pdb:bin\llc.pdb /version:0.0 /machine:X86 /STACK:10000000 /debug
> /INCREMENTAL /subsystem:console  && cd ."
> LINK Pass 1: command
> "C:\PROGRA~2\MICROS~2\2019\COMMUN~1\VC\Tools\MSVC\1428~1.293\bin\Hostx86\x86\link.exe
> /nologo @CMakeFiles\llc.rsp /out:bin\llc.exe /implib:lib\llc.lib
> /pdb:bin\llc.pdb /version:0.0 /machine:X86 /STACK:10000000 /debug
> /INCREMENTAL /subsystem:console /MANIFEST
> /MANIFESTFILE:tools\llc\CMakeFiles\llc.dir/intermediate.manifest
> tools\llc\CMakeFiles\llc.dir/manifest.res" failed (exit code 1318) with the
> following output:
> LINK : the 32-bit linker
> (C:\PROGRA~2\MICROS~2\2019\COMMUN~1\VC\Tools\MSVC\1428~1.293\bin\Hostx86\x86\link.exe)
> ran out of heap space and is going to restart linking with a 64-bit linker
> LINK : fatal error LNK1318: Unexpected PDB error; RPC (23) '(0x000006BA)'
> [19/356] Linking CXX executable bin\bugpoint.exe
> FAILED: bin/bugpoint.exe
> cmd.exe /C "cd . && "C:\Program Files\CMake\bin\cmake.exe" -E vs_link_exe
> --intdir=tools\bugpoint\CMakeFiles\bugpoint.dir
> --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100183~1.0\x86\rc.exe
> --mt=C:\PROGRA~2\WI3CF2~1\10\bin\100183~1.0\x86\mt.exe --manifests  --
> C:\PROGRA~2\MICROS~2\2019\COMMUN~1\VC\Tools\MSVC\1428~1.293\bin\Hostx86\x86\link.exe
> /nologo @CMakeFiles\bugpoint.rsp  /out:bin\bugpoint.exe
> /implib:lib\bugpoint.lib /pdb:bin\bugpoint.pdb /version:0.0 /machine:X86
> /STACK:10000000 /debug /INCREMENTAL /subsystem:console  && cd ."
> LINK Pass 1: command
> "C:\PROGRA~2\MICROS~2\2019\COMMUN~1\VC\Tools\MSVC\1428~1.293\bin\Hostx86\x86\link.exe
> /nologo @CMakeFiles\bugpoint.rsp /out:bin\bugpoint.exe
> /implib:lib\bugpoint.lib /pdb:bin\bugpoint.pdb /version:0.0 /machine:X86
> /STACK:10000000 /debug /INCREMENTAL /subsystem:console /MANIFEST
> /MANIFESTFILE:tools\bugpoint\CMakeFiles\bugpoint.dir/intermediate.manifest
> tools\bugpoint\CMakeFiles\bugpoint.dir/manifest.res" failed (exit code
> 1318) with the following output:
> LINK : bin\bugpoint.exe not found or not built by the last incremental
> link; performing full link
> LINK : the 32-bit linker
> (C:\PROGRA~2\MICROS~2\2019\COMMUN~1\VC\Tools\MSVC\1428~1.293\bin\Hostx86\x86\link.exe)
> ran out of heap space and is going to restart linking with a 64-bit linker
> LINK : fatal error LNK1318: Unexpected PDB error; RPC (23) '(0x000006BA)'
>
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