Subj : src/doors/syncscumm/build.bat
To   : Git commit to main/sbbs/master
From : Rob Swindell (on Windows 11)
Date : Tue Aug 25 2026 22:05:21

https://gitlab.synchro.net/main/sbbs/-/commit/987bec6be928b0de24aa46ed
Modified Files:
	src/doors/syncscumm/build.bat
Log Message:
syncscumm: build with the 64-bit MSBuild

build.bat picked C:\...\MSBuild\Current\Bin\MSBuild.exe, which is a 32-bit
process -- and so is every worker node it spawns.  This solution builds nine
projects under /m, each running cl /MP, and a node's 32-bit address space
does not survive that: once the .NET JIT can no longer allocate, it fails
whichever method it happens to be compiling with

  System.InvalidProgramException: JIT Compiler encountered an internal
  limitation.

Which method that is varies per run, so a single exhaustion produced a
different error every time and the CI failures read as unrelated flakes: the
CL task failing in PostExecuteTool, the LIB task failing to instantiate, a
compiled Regex inside MSBuild's own Expander, vcpkg's inline
GetGlobalProperties task "not found", and bare "MSB4166: Child node N exited
prematurely".  windows-x86 [syncscumm] failed this way intermittently and
was the only job on that runner ever to fail -- it is the only build here
big enough to run a node out of address space.

Prefer Bin\amd64\MSBuild.exe, falling back to the 32-bit one if no installed
VS 2022 edition ships it.  Same MSBuild, 64-bit address space.  This is the
failure msvc\Directory.Build.props already fixes one layer down for the
compiler itself (PreferredToolArchitecture=x64, after the 32-bit cl.exe host
ran out of address space under /MP); MSBuild needed the same treatment.

Introduced in 745c1c542b, which added this build.

Reproduced locally: a clean build.bat run under the 32-bit MSBuild died with
the CL and LIB tasks both throwing InvalidProgramException, and under
Bin\amd64 the same tree builds through to build-msvc\Release\syncscumm.exe.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KvZbcp3SQ7xt7bgpRRxvpg
--- SBBSecho 3.37-Linux
 * Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)

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