[coreboot-gerrit] Patch merged into coreboot/master: 31bf37e crossgcc: Improve compatibility of the toolchain across host systems
gerrit at coreboot.org
gerrit at coreboot.org
Thu Jun 4 17:15:03 CEST 2015
the following patch was just integrated into master:
commit 31bf37eb32170bf69be845a1218438c12fe5bf75
Author: Patrick Georgi <patrick at georgi-clan.de>
Date: Thu Jun 4 00:09:12 2015 +0200
crossgcc: Improve compatibility of the toolchain across host systems
crossgcc builds gmp, whose build system normally optimises for the hardware
it's built on. That may give a minor performance boost but has the downside
that the compiler becomes non-portable and may break on other systems due to
illegal instructions.
Setting CFLAGS to some reasonable value prevents gmp's configure script from
choosing CPU specific -mtune flags (which may enable optimizations that only
run on CPUs with the same feature set).
Enabling "fat" builds make the build system add all optimized assembler
routines and makes the selection of the right one a runtime decision instead
of deciding at compile time.
Change-Id: I72d20627270baa082cd02ebb4c9a09cd23f30f8c
Signed-off-by: Patrick Georgi <patrick at georgi-clan.de>
Reviewed-on: http://review.coreboot.org/10412
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer at coreboot.org>
See http://review.coreboot.org/10412 for details.
-gerrit
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