As in: recompile and works? For sure, see for example a lot of the HEP/NP software which runs typically on Linux, BSDs (incl. MacOS) and I think even Windows.

As in: recompile and works? For sure, see for example a lot of the HEP/NP software which runs typically on Linux, BSDs (incl. MacOS) and I think even Windows. As in: have the same binary? You could probably use the same object files, but shared libraries and executables probably won't work (without trickery), just because the file format is different.