MSVC compiler error when building for ARM64 with Visual Studio 2022

[abdes]

Operating system and version

Windows 11, Version 21H2 (OS Build 22000.978)

Compiler

Visual Studio 2022
Microsoft (R) C/C++ Optimizing Compiler Version 19.33.31630 for x64

Crypto++ library

v8.7.0

How you built the library

CMake (https://github.com/abdes/cryptopp-cmake)

Please note that the base cryptopp project provided .sln file does not have the option to cross-build for ARM64 on WIN32 using MSVC.

Make sure you have installed the ARM and ARM64 build tools for Visual Studio.

git clone https://github.com/abdes/cryptopp-cmake
cd cryptopp-cmake
mkdir cmake-build-arm64
cd cmake-build-arm64
cmake -G "Visual Studio 17 2022" -A ARM64 ..
cmake --build .

Compiler output

MSBuild version 17.3.1+2badb37d1 for .NET Framework
  crc_simd.cpp
D:\dev\projects\cryptopp-cmake\cmake-build-arm64\_deps\cryptopp\arm_simd.h(323,1): error C2057: expected constant expression (compiling source file D:\dev\projects\cryptopp-cmake\cmak
e-build-arm64\_deps\cryptopp\crc_simd.cpp) [D:\dev\projects\cryptopp-cmake\cmake-build-arm64\cryptopp\cryptopp.vcxproj]
  gcm_simd.cpp
D:\dev\projects\cryptopp-cmake\cmake-build-arm64\_deps\cryptopp\arm_simd.h(323,1): error C2057: expected constant expression (compiling source file D:\dev\projects\cryptopp-cmake\cmak
e-build-arm64\_deps\cryptopp\gcm_simd.cpp) [D:\dev\projects\cryptopp-cmake\cmake-build-arm64\cryptopp\cryptopp.vcxproj]
  gf2n_simd.cpp
D:\dev\projects\cryptopp-cmake\cmake-build-arm64\_deps\cryptopp\arm_simd.h(323,1): error C2057: expected constant expression (compiling source file D:\dev\projects\cryptopp-cmake\cmak
e-build-arm64\_deps\cryptopp\gf2n_simd.cpp) [D:\dev\projects\cryptopp-cmake\cmake-build-arm64\cryptopp\cryptopp.vcxproj]

To do the same for ARM32, just change the commands to:

mkdir cmake-build-arm32
cd cmake-build-arm32
cmake -G "Visual Studio 17 2022" -A ARM ..
cmake --build .

Clearly state the undesired behavior (and state the expected behavior)

The same build for ARM32 does not generate errors but for ARM64 it does.
Expected: both work.

[noloader]

@abdes

I removed the function due to MSVC. If you have a MSDN account, you should file a bug against the compiler.