Undefined reference linking error about onetbb

[isaevil]

@sarathnandu @pavel-cpp CMake has found the library. In the log above there is link line: C:/Program Files (x86)/Intel/oneAPI/tbb/2021.11/lib/tbb12_debug.lib"
oneTBB library is a C++ library and built using MSVC so I am pretty sure it is not ABI compatible with MinGW. You should either rebuild oneTBB from source or not use MinGW toolchain in this case.

[sarathnandu]

I think cmake is not able to find the path to the library here. One thing to try is to let CMake know where to search for TBBConfig directly,
Starting from oneTBB 2021.1, GitHub* release TBBConfig files in the binary packages are located under /lib/cmake/TBB
You can specify this as
cmake -DTBB_DIR=<TBB_ROOT>/lib/cmake/TBB ..

[pavel-cpp]

When I studied the oneTBB source files, I noticed that there is an implementation for MinGW Toolchain, but it does not compile due to incorrect conversion of char to wchar_t.

[isaevil]

You should be able to compile oneTBB from sources using MinGW. If you see any compile errors, please share error logs. Pull requests are welcome as well :)

[pavel-cpp]

ok, i will try that on this week. You can try this too. Just try to fetch this by conan2.

[sarathnandu]

I presume you were able to build oneTBB using MinGW. Closing this issue.
Feel free to open if you're facing any trouble.