Hi, I am agreeing with Simon. We use mips and we see the mentioned impacts. We also see quite size difference (%6 large on systemd-cat binary text section) which might not be so welcomed on embedded system.
Umut On Mon, May 19, 2014 at 12:37 PM, Simon McVittie <simon.mcvit...@collabora.co.uk> wrote: > On 18/05/14 16:47, Cristian Rodríguez wrote: >> OK, Let's try [building everything -fPIE] instead. > > Hopefully things have improved since 2011, but my experience with > dbus[1] has been that this works fine on mainstream architectures, but > frequently fails on embedded architectures (arm* family, mips* family, > etc.) where various toolchain versions have been known to fail to > compile, fail to link, or worse, link binaries that sometimes or always > crash at runtime (which is hard to detect in a configure script without > breaking cross-compilation). > > libtool has relatively intelligent handling of the PIE compiler flags, > so if a distro wants to enable -fPIE (or other hardening options like > -Wl,-z,relro) it's easy for that distro to enable PIE by passing > appropriate CPPFLAGS, CFLAGS, LDFLAGS, etc. to the configure script, > which works for any libtool + Autoconf + Automake project without > modification: > > ./configure CFLAGS=-fPIE LDFLAGS=-pie > > In distributions where not all architectures have the same level of > upstream toolchain support, centralizing the decision about compiler > flags to one place (e.g. dpkg-buildflags, and previously > hardening-wrapper, in Debian) means it's possible to avoid broken flag > combinations per-architecture, without having to encode that knowledge > into each package. > > S > > [1] https://bugs.freedesktop.org/show_bug.cgi?id=16621 > and more specifically > https://bugs.freedesktop.org/show_bug.cgi?id=16621#c9 > > _______________________________________________ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/systemd-devel _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel