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ci(windows): set CARGO_TARGET_DIR=C:\t — dodge MAX_PATH in CMake-from-source builds

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With the BOM fixed (shell: pwsh), the build got far enough to compile audiopus_sys, which
does a CMake-from-source build of libopus. The runner's host workdir sits deep under
C:\Windows\System32\config\systemprofile\.cache\act\<hash>\hostexecutor\, so target\debug\build\
audiopus_sys-*\out\build\CMakeFiles\CMakeScratch\TryCompile-*\...\.tlog overran Windows' 260-char
MAX_PATH and MSBuild's tracker failed to create its .tlog (DirectoryNotFoundException -> MSB6003,
"CL.exe konnte nicht ausgeführt werden"). Pointing CARGO_TARGET_DIR at C:\t shortens every nested
build path well under the limit (fixes audiopus_sys + SDL3, both CMake-from-source).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Enrico Bühler
2026-06-16 08:18:34 +00:00
parent 5f7ad705ca
commit 3a3c353a5e
1 changed files with 11 additions and 3 deletions
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.gitea/workflows/windows.yml
+11 -3
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@@ -3,9 +3,16 @@
# (windows-reactor + D3D11/SwapChainPanel + WASAPI + SDL3) on x86_64-pc-windows-msvc.
#
# The MSVC/WinUI/FFmpeg toolchain (cargo/rustup on ASCII paths, NASM, CMake, LLVM, FFmpeg,
# CARGO_HOME, CMAKE_POLICY_VERSION_MINIMUM, …) is baked into the runner's daemon env. The one
# per-checkout var is CARGO_WORKSPACE_DIR (windows-reactor's build.rs unwraps it + stages the
# Windows App SDK NuGets/winmd under it) — set from GITHUB_WORKSPACE in a step.
# CARGO_HOME, CMAKE_POLICY_VERSION_MINIMUM, …) is baked into the runner's daemon env. Two
# per-checkout vars are set in a step:
# - CARGO_WORKSPACE_DIR windows-reactor's build.rs unwraps it + stages the Win App SDK
# NuGets/winmd under it (from GITHUB_WORKSPACE).
# - CARGO_TARGET_DIR=C:\t the runner's host workdir is buried deep under
# C:\Windows\System32\config\systemprofile\.cache\act\<hash>\hostexecutor\,
# so the default target\ path blows past Windows' MAX_PATH (260) inside the
# CMake-from-source builds (audiopus_sys / SDL3) — MSBuild's tracker then
# can't create its .tlog (DirectoryNotFoundException -> MSB6003). A short
# root keeps every nested path well under the limit.
#
# Steps use `shell: pwsh` (PowerShell 7) deliberately: Windows PowerShell 5.1's
# `Out-File -Encoding utf8` prepends a UTF-8 BOM that corrupts the first GITHUB_ENV line (the
@@ -42,6 +49,7 @@ jobs:
shell: pwsh
run: |
"CARGO_WORKSPACE_DIR=$env:GITHUB_WORKSPACE" | Out-File -FilePath $env:GITHUB_ENV -Append -Encoding utf8
"CARGO_TARGET_DIR=C:\t" | Out-File -FilePath $env:GITHUB_ENV -Append -Encoding utf8
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