[Activity]
[LLVM-542] Compiling zephyr with clang
- Prepared for presentation/discussion with colleagues at Connect next week.
- Made the installation process a bit more repeatable
- Added support for -Oz
[Intel-CET] patches to LLD (similar to BTI)
- Code-owner has redesigned the patches and they look a lot better and
more likely to go in. Shouldn't be too difficult to build BTI on top
of.
[LLVM-523] .ARM.exidx redesign
- Now committed, and has stuck for at least a day without needing to
be reverted.
Linaro Connect
- Preparations for hack room
- Gave dry run of presentation for Doughnuts. Will need to cut out
some material to get through in time.
Next week:
At Linaro Connect
Then at EuroLLVM
Then most likely on holiday for remainder of that week.
== Progress ==
* FDPIC
- Discovered that my stm32f429-disc1 board is not suitable for recent
Linux kernels (too large). Will experiment with stm32f469-disco
* GCC upstream validation:
- reported a few regressions
* misc (conf-calls, meetings, emails, ....)
- reviewed infra script patches
- fixed small issues after adding QEMU as a toolchain component in ABE
- added jobs to monitor Jenkins slaves
- fixed issues in benchmarking scripts
== Next ==
FDPIC:
- GCC: handle feedback on v4 patches
- GDB: update patches
- uclibc-ng: look at how to test fdpic mode with openadk
- complete board setup
Infra:
- benchmarking jobs update
== Progress ==
* LLVM 7.1.0 Release for ARM & AArch64 [LLVM-546]
- Fixed our infra scripts to work for 7.1.0 (looks like it's the
first ever minor release since the new numbering scheme was
introduced)
- AArch64 is ready and green, ARM still in progress
* [Thumb GlobalISel] Bugfixes [LLVM-544]
- Committed the patch for alignment issues and 2 other patches for
1-bit value handling
- Selfhosted clang now passes check-all
* IR SVE Reviews [LLVM-545]
- More reading, installed armie etc
== Plan ==
* More of the same
Hi,
I am trying to cross-compile QEMU for aarch64 target using the below toolchain http://releases.linaro.org/components/toolchain/binaries/4.9-2016.02/aarch6…
../configure --target-list=aarch64-softmmu --enable-kvm --enable-vhost-net --cross-prefix=~/Downloads/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
ERROR: pkg-config binary '/home/rokhanna/Downloads/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-pkg-config' not found
QEMU - https://github.com/qemu/qemu
Any pointers on where I can find pkg-config? Thanks in advance.
Thanks
Rohit
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Thanks Wookey and Richard.
I was able to resolve the pkg-config issue after installing it with -
apt install pkg-config-aarch64-linux-gnu
I modified my configure command to below -
./configure --target-list=aarch64-softmmu --enable-kvm --enable-vhost-net --cross-prefix=aarch64-linux-gnu-
Now I am running into dependency issue on glib-2.4 and gthread-2.0.
rokhanna@rokhanna-dev ~/dev/qemu.git $ ./configure --target-list=aarch64-softmmu --enable-kvm --enable-vhost-net --cross-prefix=aarch64-linux-gnu-
ERROR: glib-2.40 gthread-2.0 is required to compile QEMU
Thanks
Rohit
________________________________
From: Richard Henderson <richard.henderson(a)linaro.org>
Sent: Thursday, March 21, 2019 9:31 PM
To: Rohit Khanna; linaro-toolchain(a)lists.linaro.org
Cc: Santosh Shukla
Subject: Re: Cross compiling QEMU for aarch64
On 3/21/19 4:45 PM, Rohit Khanna wrote:
> Hi,
>
> I am trying to cross-compile QEMU for aarch64 target using the below toolchain http://releases.linaro.org/components/toolchain/binaries/4.9-2016.02/aarch6…
>
>
> ../configure --target-list=aarch64-softmmu --enable-kvm --enable-vhost-net --cross-prefix=~/Downloads/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
>
> ERROR: pkg-config binary '/home/rokhanna/Downloads/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-pkg-config' not found
First, "--cross-prefix=aarch64-linux-gnu-".
It is a prefix, not a path. You should have
"$HOME/Downloads/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/bin" in your
path in order to use that compiler.
Second, pkg-config is not part of a toolchain, but part of an entire OS
distribution. If your host is debian or ubuntu, they ship a version configured
for aarch64 cross-compilation. Which is helpful because...
Third, you're going to need a *lot* of aarch64 libraries in order to build
QEMU. This is where OS support for cross-toolchains is key.
r~
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Progress: (short week, 3 days)
* VIRT-65 [QEMU upstream maintainership]
+ reviewed a few patchsets that had been lurking in my queue too long
+ trawled through the QEMU bug system for bugs we'd already fixed and
forgotten to close, bugs which need more info from the submitter,
and bugs which were very easy to fix
+ various other release related work
* Preparation for Connect next week
thanks
-- PMM
Linaro connect preparation:
- Finished Linaro Connect presentation on cross compilation with clang
-- Hoping to do a dry-run at Doughnuts this week assuming we can
resolve a potential clash with the IPG hands-on.
- Draft agenda for the hack-room produced.
[LLVM-523] ARM.exidx redesign
- Got approval, committed and then reverted my exceptions redesign due
some build-bot failures. Found another potential problem with
--emit-relocs that may be a bit more difficult to fix.
[BTI]
Continuing to review and make suggestions for Intel CET patch
(pre-requisite for BTI due to common use of .note.gnu.property
sections)
Some more communication with Linux Kernel port to Arm with respect to
assembler problems.
o LLVM
* Machine outliner:
- Debugging issue in LLVM bootstrap.
- Preparing BKK19 Hacking session presentation.
o Misc
* Various meetings and discussions.
[VIRT-263 # ARMv8.1-VHE Virtual Host Extensions ]
Picked up my partial patch set and started on it again.
It is improved by having done the pauth/bti/mte work.
But still a work in progress.
[VIRT-327 # Richard's upstream QEMU work ]
Version 3 of tcg/ppc vector instructions.
Reviewed target/rx v4.
Fixed thread=single expansion of casp after Alex did all the
hard work tracking down the kernel failure, and writing me a
test case.
Looking into the size of the softmmu tlb expansion. Current
thinking is to move tlb out of CPUArchState into a new struct
that precedes env, so that the tlb is at small negative offsets
from env, so that {mask, table} is loadable with LDP/LDRD.
r~
