Cannot build for Windows on ARM64

[JVital2013]

Issue Description

When attempting to build the UHD host library in MSVC for Windows on ARM64, the compiler build stops with the following error repeated several times:

uhd\host\lib\deps\rpclib\include\rpc\msgpack\pack.hpp(190,1): error C1189: #error:  msgpack-c supports only big endian and little endian

Setup Details

• Windows 11 24H2
• Microsoft Visual Studio 2022 x64, cross-compiling for arm64
• Using vcpkg to manage uhd dependencies, such as boost
• Using the 4.7.0.0 release

Expected Behavior

Successful compilation of the host library

Actual Behaviour

The library fails to compile with compiler errors

Steps to reproduce the problem

1. Set up vcpkg with all the necessary boost packages, and other dependencies. Exact command I am using (which includes some extra packages)

vcpkg install --triplet arm64-windows pthreads libjpeg-turbo tiff libpng glfw3 libusb fftw3 libxml2 portaudio nng zstd armadillo opencl curl[schannel] boost-chrono boost-date-time boost-filesystem boost-program-options boost-system boost-serialization boost-thread boost-test boost-format boost-asio boost-math boost-graph boost-units boost-lockfree boost-circular-buffer boost-assign boost-dll

2. Then, the attempted build

git clone https://github.com/EttusResearch/uhd --depth 1 -b v4.7.0.0
cd uhd\host
mkdir build
build
cmake -DCMAKE_TOOLCHAIN_FILE=C:\path-to-vcpkg\scripts\buildsystems\vcpkg.cmake -DVCPKG_TARGET_TRIPLET=arm64-windows -DCMAKE_BUILD_TYPE=Release -A arm64 -DENABLE_MAN_PAGES=OFF -DENABLE_MANUAL=OFF -DENABLE_PYTHON_API=OFF -DENABLE_EXAMPLES=OFF -DENABLE_UTILS=OFF -DENABLE_TESTS=OFF ..
cmake --build . --config Release

Additional Information

When using visual studio/vcpkg for x64, the build completes successfully. It appears to be an issue specific to Windows on ARM64, in one of your dependencies

[windwosvs]

hi. Were you able to get a build?

[joergho]

Yes, the build is fixed on master (relevant commit: 84f270a).