On Sat, Apr 13, 2013 at 8:17 AM, Jérémie Courrèges-Anglas <[email protected]> wrote: > I'm trying to port mosh[1] on OpenBSD; its build system tries to enable > several compile and build flags. Most of those seem on by default, where > suitable, on OpenBSD (SSP, PIE), but I wonder if ''ld -z relro'' > and ''-z now'' would be useful. According to my limited testing, > ''-z relro'' doesn't seem to change the executable (''readelf -d ... | > grep BIND_NOW'' yields no output), whereas ''-z now'' seems to.
OpenBSD has done the equivalent of "-z relro" for years now. I don't think you can turn it off. (There's one detail, how the address ranges are identified, that is cleaner in the relro design. We're looking at pulling that bit into how OpenBSD does it.) As for -z now: yeah, it works on OpenBSD; what problem are they trying to solve by using it? Philip Guenther
