On Thursday 15 July 2010 19:48:43 Aurelien Jarno wrote: > Note that the new alternative to hwcap is called "multiarch" in the GNU > libc (something totally different than "multiarch" in Debian). It allows > to provide different versions of a given symbol using an IFUNC symbol > type. This will be resolved by the dynamic loader during relocation > depending on the hardware characteristics. > > This avoid building multiple version of the same software (but still > multiple versions of a given function), and to introduce more > granularity (e.g. on x86 SSE, SSE2, SSE3, SSSE4.2, AVX, etc).
So, in essence an application/library can include in the same binary multiple versions of the same function and the system picks one depending on the current cpu capabilities? So things like autodetecting SSE/Altivec, etc are not needed anymore? > Currently only x86, x86_64, ia64, powerpc and sparc are supported, but > it should not be difficult to add support for more architectures. I'm interested in that, is it documented somewhere? ( I know the old hwcap was not at all, unless one wanted to read half of glibc source code). Regards Konstantinos -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
