I'm not sure exactly the effect on RISC-V binaries, but I wanted to raise it here to get the attention of the Fedora toolchain team ... Here's the bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31179 RISC-V: The SET/ADD/SUB fix breaks ABI compatibility with 2.41 objects It refers to this change in binutils 2.41: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=73d931e560059a87d76f528fafbb4270a98746bc As far as I understand the issue (which is not too far) this mainly affects shipped *.o and *.a files (ie. static libraries and similar) which were compiled with binutils < 2.41, which either won't link correctly or will give a linker error when using GNU ld from binutils 2.41. Unclear if it also affects *.so files (which would be a much more serious ABI break), and also if it affects most binaries or just a few. I initially thought this only affected programs using 128 bit ints, so didn't think it was too important, but after reading the commit I'm not sure that is really true. There's been discussion about adding an ELF tag, but that seems very problematic to me: https://github.com/riscv-non-isa/riscv-elf-psabi-doc/pull/414 Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into KVM guests. http://libguestfs.org/virt-v2v -- _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
