[coreboot-gerrit] Patch set updated for coreboot: 4b70d04 crossgcc: Improve compatibility of the toolchain across host systems
Patrick Georgi (pgeorgi@google.com)
gerrit at coreboot.org
Thu Jun 4 09:14:34 CEST 2015
Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10412
-gerrit
commit 4b70d048b70c4d54942014e83e356f9bca60ba6c
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>
---
util/crossgcc/buildgcc | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index 15bcd92..a1b596e 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -22,8 +22,8 @@
cd `dirname $0`
-CROSSGCC_DATE="March 8th, 2015"
-CROSSGCC_VERSION="1.27"
+CROSSGCC_DATE="June 3th, 2015"
+CROSSGCC_VERSION="1.28"
# default settings
TARGETDIR=`pwd`/xgcc
@@ -418,7 +418,7 @@ printf "Building GMP ${GMP_VERSION} ... "
(
cd ${BUILDDIRPREFIX}-gmp
rm -f .failed
- CC="$CC" ../${GMP_DIR}/configure --disable-shared --prefix=$TARGETDIR $OPTIONS \
+ CC="$CC" CFLAGS="-Os" ../${GMP_DIR}/configure --disable-shared --enable-fat --prefix=$TARGETDIR $OPTIONS \
|| touch .failed
$MAKE $JOBS || touch .failed
$MAKE install DESTDIR=$DESTDIR || touch .failed
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