On Thu, Jun 06, 2019 at 07:30:08AM +0200, Markus Armbruster wrote: > "H. Peter Anvin" <h...@zytor.com> writes: > > > On 6/5/19 12:55 PM, H. Peter Anvin wrote: > >> Hi, > >> > >> I am writing some code I'm hoping will be able to make it into Qemu, but I > >> can't seem to find what the baseline portability requirements are. I'm > >> specifically wondering about newer POSIX features like openat(), which > >> seems > >> to be used in the 9p filesystem and nowhere else, and what version of glib > >> one > >> can rely on? > >> > > > > Specifically, I'm trying to satisfy a 10-year-old request by me and others > > to > > support composite initrd during Linux boot. > > Please peruse qemu-doc.texi @appendix Supported build platforms. If it > doesn't fully answer your question, ask for clarification here.
And specificially on the glib version question, we currently mandate 2.40. If you try to use a glib API from a version newer than 2.40 we have things setup so that you should get a fatal compile error due to our use of #define GLIB_VERSION_MAX_ALLOWED GLIB_VERSION_2_40 If you do think it is useful to have an API from glib > 2.40 you can put some back compat logic in include/glib-compat.h so that you can use the newer API and gracefully degrade on older glib. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
