Build failed in Japanese version of Windows 11

[aetos382]

What version of OR-Tools and what language are you using?
Version: v9.14
Language: C#

Which solver are you using (e.g. CP-SAT, Routing Solver, GLOP, BOP, Gurobi)

What operating system (Linux, Windows, ...) and version?
Windows 11 24H2 (Japanese)

What did you do?
Steps to reproduce the behavior:

1. git clone https://github.com/google/or-tools.git
2. cd or-tools
3. cmake -S . -Bbuild -DBUILD_DEPS=ON -DBUILD_DOTNET=ON
4. cmake --build build --target dotnet_package -v
5. See error

The error occurs even in step3 on the Japanese version of Windows 11.
To work around this, the patch #4725 (comment) is applied.

What did you expect to see
Build succeeds.

What did you see instead?
Errors C2001 and C2143 and warning C4819 occur.

The entire build log is attached below (in Japanese).
build.log

Anything else we should know about your project / environment
Visual Studio 2022 v17.14.9

Workaround

  list(APPEND OR_TOOLS_COMPILE_OPTIONS
    "/bigobj" # Allow big object
    "/DNOMINMAX"
    "/DWIN32_LEAN_AND_MEAN=1"
    "/D_CRT_SECURE_NO_WARNINGS"
    "/D_CRT_SECURE_NO_DEPRECATE"
    "/MP" # Build with multiple processes
    "/Zc:preprocessor" # Enable preprocessor conformance mode
    "/fp:precise"
+   "/source-charset:utf-8"
    )

https://github.com/google/or-tools/blob/v9.14/cmake/cpp.cmake#L101-L110

[aetos382]

I have reported some problems with the Japanese version of Windows and VC++, but have yet to have a successful build because #4569 also occurs with the English version.

[Mizux]

In any order:

1. you should compile in release mode --config Release

2. Shouldn't set also the "execution charset" or /utf-8 instead ?
   ref: https://stackoverflow.com/questions/50363707/vc-compiler-source-charsetutf-8-doesnt-work
   ref: https://learn.microsoft.com/en-us/cpp/build/reference/execution-charset-set-execution-character-set?view=msvc-170

3. Also looking quickly at your trace maybe abseil-cpp (and all other dependencies too ?) also need to set the /utf-8 compile flag...
   ref: https://github.com/abseil/abseil-cpp/blob/af00a9295f47b4d3441184d5701505b7edec4a4a/absl/copts/GENERATED_AbseilCopts.cmake#L185-L224

[aetos382]

@Mizux
Thank you. I have confirmed that LNK1189 does not occur in the release build.

I am currently investigating whether the /source-charset:utf-8 option alone is sufficient or whether the /utf-8 option should be used.

Even if C4819 appears in the build log, the build can still be completed, but if code page settings are required for the dependencies where this appears, there will be many such dependencies.

• absl
• protobuf
• Cgl
• scip
• highs