Windows vcpkg CI failure Begin of August 2023

[traversaro]

Last successful job: https://github.com/robotology/robotology-superbuild/actions/runs/5721792958/job/15503900304

First failing job: https://github.com/robotology/robotology-superbuild/actions/runs/5724395426/job/15510805776

2023-08-01T09:19:49.6670684Z   -- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/cl.exe - skipped
2023-08-01T09:19:49.6675854Z   -- Detecting CXX compile features
2023-08-01T09:19:49.6693510Z   -- Detecting CXX compile features - done
2023-08-01T09:19:49.8298337Z   CMake Error in C:/robotology-superbuild/build/src/OsqpEigen/CMakeFiles/CMakeTmp/CMakeLists.txt:
2023-08-01T09:19:49.8300504Z     IMPORTED_IMPLIB not set for imported target "osqp::osqp" configuration
2023-08-01T09:19:49.8302023Z     "MinSizeRel".
2023-08-01T09:19:49.8302984Z   
2023-08-01T09:19:49.8304083Z   
2023-08-01T09:19:49.8305257Z   CMake Error in C:/robotology-superbuild/build/src/OsqpEigen/CMakeFiles/CMakeTmp/CMakeLists.txt:
2023-08-01T09:19:49.8306620Z     IMPORTED_IMPLIB not set for imported target "osqp::osqp" configuration
2023-08-01T09:19:49.8307721Z     "RelWithDebInfo".
2023-08-01T09:19:49.8308635Z   
2023-08-01T09:19:49.8309466Z   
2023-08-01T09:19:49.8433698Z   CMake Error at cmake/OsqpEigenDependencies.cmake:14 (try_compile):
2023-08-01T09:19:49.8434462Z     Failed to generate test project build system.
2023-08-01T09:19:49.8435094Z   Call Stack (most recent call first):
2023-08-01T09:19:49.8435652Z     CMakeLists.txt:75 (include)

I wonder if this is actually a CMake regression.

[traversaro]

Actually latestreseases is not affected, so it could be a regression of robotology/osqp-eigen#131 . Indeed, the error is in the try_compile part. I am afraid this is not a vcpkg-specific issue, but also appear with conda if a Multiple-Config generator is used.