>>>>> "ILT" == Ian Lance Taylor <iant@xxxxxxxxxx> writes: ILT> However, to answer your question, the OS/ABI field will be set to ILT> GNU/Linux if your program has any symbols whose type is STT_GNU_IFUNC. ILT> This of course suggests that your problem is that you are building on a ILT> system with a newer version of glibc than the system on which you want ILT> to run the program. This doesn't work in general; glibc is backward ILT> compatible but not forward compatible. That fully explains both why it happens for this project and why the abi on the box's own executables and libraries seemed to be a random mix of the two abis. What is the best way to determine exactly which symbols in use are so tagged? I tried objdump, readelf, dumpelf and scanelf, but didn't see references to the ST_TYPE. -JimC -- James Cloos <cloos@xxxxxxxxxxx> OpenPGP: 1024D/ED7DAEA6