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qemu/ipxe-use-gcc6-for-more-compact-code.patch
Bruce Rogers 70b09a5bad Accepting request 461715 from Virtualization:Staging
Update to v2.8.0, including integration of SLE qemu package so we are "Factory First" again for SLE qemu. Includes some spec file tweaks/cleanups as well. A number of post v2.8.0 security fixes are also included.

OBS-URL: https://build.opensuse.org/request/show/461715
OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=329
2017-03-15 19:38:55 +00:00

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ipxe: use gcc6 for more compact code
We have a strict size limit of 64K which needs to be enforced for
pxe-virtio.rom for migration compatibility. The v4.8 gcc compiler
used in SLE12 doesn't produce as compact code as does more recent
gcc compilers, and the pxe-virtio.rom produced with it doesn't fit
in 64K anymore without taking extraordinary efforts. I was unable
to find enough opportunities in the ipxe code and data to reduce
its size, and found that using a more recent compiler would be the
best solution to keeping the rom size within the 64K size limit.
Signed-Off-By: Bruce Rogers <brogers@suse.com>
--- a/src/Makefile
+++ b/src/Makefile
@@ -24,7 +24,7 @@ ECHO := echo
PRINTF := printf
PERL := perl
TRUE := true
-CC := $(CROSS_COMPILE)gcc
+CC := $(CROSS_COMPILE)gcc-6
CPP := $(CC) -E
AS := $(CROSS_COMPILE)as
LD := $(CROSS_COMPILE)ld