Hello We don't have many windows-specific changes in 2.1 except some late MSVC-related changes added after rc1. Can you try 2.1.0rc1 instead of 2.1.0? It's not visible on the download page but it's actually available, for instance at https://download.open-mpi.org/release/hwloc/v2.1/hwloc-win64-build-2.1.0rc1.zip
Also, can you clarify whether your cygwin working fine was using that released zipball or a cygwin-built libhwloc? Thanks Brice Le 30/06/2020 à 21:51, Jon Dart a écrit : > I have had some trouble with even a simple hwloc program on Windows 10 > when building with Visual Studio 2019 Community Edition. > > The attached program works fine with cygwin when built like this: > > g++ -c -I/cygdrive/e/chess/hwloc-win64-build-2.2.0/include -O2 > main.cpp topo.cpp > g++ -o main -L /cygdrive/e/chess/hwloc-win64-build-2.2.0/lib main.o > topo.o -lstdc++ -lhwloc > > It just initializes the topology and prints out some basic > information, such as: > > detected 1 socket(s), 8 core(s), 16 logical processing units. > > If I compile the same program with MSVC (64-bit compiler): > > cl /EHsc /c -DNOMINMAX -IE:\chess\hwloc-win64-build-2.2.0/include -O2 > main.cpp topo.cpp > link /out:main.exe main.obj topo.obj kernel32.lib user32.lib winmm.lib > E:\chess\hwloc-win64-build-2.2.0/lib/libhwloc.lib /nologo > /incremental:no /opt:ref /subsystem:console > > Then it does not output anything, it just terminates. Running in the > debugger indicates that there is an exception in the first call to hwloc. > > This program works with MSVC and the released build of version 2.0.4 > of hwloc. It does not work with 2.1.0 or 2.2.0. > > --Jon > > > _______________________________________________ > hwloc-users mailing list > hwloc-users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/hwloc-users
_______________________________________________ hwloc-users mailing list hwloc-users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/hwloc-users
