Build fails with "incomplete type OR_PROTO_DLL is not allowed" and multiple related errors since 9.13 (dynamic DLL, Windows)

[Diddlik]

What version of OR-Tools and what language are you using?
Version: 9.13-9.14
Language: C++

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

What operating system (Linux, Windows, ...) and version?
Windows / Visual Studio 2022

I've been using OR-Tools with a static lib build (on Windows) for a while. Since version 9.13, I'm no longer able to compile the library. The build fails with a long list of errors, mostly centered around the following messages:

incomplete type "OR_PROTO_DLL" is not allowed
expected an expression
expected a '}'
expected a declaration
declaration is incompatible with class "google::protobuf::internal::DescriptorTable" (declared at line 306 of "F:\Coding\ortoolscpp\include\google\protobuf\generated_message_reflection.h")
expected a ';'
object of abstract class type "operations_research::glop::OR_PROTO_DLL" is not allowed:
expected a ';'
object of abstract class type "operations_research::glop::OR_PROTO_DLL" is not allowed:
expected a ';'
object of abstract class type "operations_research::glop::OR_PROTO_DLL" is not allowed:
expected a ';'
object of abstract class type "operations_research::glop::OR_PROTO_DLL" is not allowed:
expected a ';'
object of abstract class type "operations_research::glop::OR_PROTO_DLL" is not allowed:
expected a ';'
object of abstract class type "operations_research::glop::OR_PROTO_DLL" is not allowed:
expected a ';'
declaration is incompatible with class "google::protobuf::internal::ClassDataFull" (declared at line 463 of "F:\Coding\ortoolscpp\include\google\protobuf\message_lite.h")
expected a ';'
namespace "operations_research::glop" has no member "GlopParameters_CostScalingAlgorithm_internal_data_"
namespace "operations_research::glop" has no member "GlopParameters_InitialBasisHeuristic_internal_data_"
namespace "operations_research::glop" has no member "GlopParameters_PricingRule_internal_data_"
namespace "operations_research::glop" has no member "GlopParameters_ScalingAlgorithm_internal_data_"
namespace "operations_research::glop" has no member "GlopParameters_SolverBehavior_internal_data_"
object of abstract class type "operations_research::glop::OR_PROTO_DLL" is not allowed:

Is this a known issue? Is there a workaround or a patch planned?
If you need a minimal repro case or further details, let me know. Happy to provide more logs or config.

Thanks for your work on OR-Tools!

[Diddlik]

Just tested to compile with cmake and got the similar error

REM Release-Build
echo Starte Release-Build...
cmake -S "%REPO_DIR%" -B "%REPO_DIR%\build_release" ^
      -DCMAKE_BUILD_TYPE=Release ^
      -DCMAKE_INSTALL_PREFIX="%RELEASE_INSTALL_DIR%" ^
      -DBUILD_DEPS=ON ^
	  -DBUILD_GLOP=ON ^
	  -DBUILD_EXAMPLES=ON ^
	  -DBUILD_SAMPLES=OFF
cmake --build "%REPO_DIR%\build_release" --config Release --target ALL_BUILD -j %NUM_THREADS% -v
cmake --build "%REPO_DIR%\build_release" --config Release --target INSTALL -v

[lperron]

#define OR_TOOLS_DLL

[Diddlik]

#define OR_TOOLS_DLL

I tried to define it in preprocessor definition, but nothing changes.