I'm trying to build the toolchain as win32 executable on Ubuntu with ABE.
I'm pretty new with ABE. I followed the FAQ
https://wiki.linaro.org/WorkingGroups/ToolChain/FAQ and Rob's post. Also
checked the MakeRelease.job and slave.sh. I have all packages listed in the
slave.sh installed. So I assume I have all dependencies ready for the build.
Here is what I have done:
Create _build subfolder beside abe
CD to _build and run: ../abe/configure --with-fileserver=148.251.136.42
--with-remote-snapshots=/snapshots-ref
First build this: ../abe/abe.sh --target aarch64-none-elf -build all
It installed the toolchain to
_build/builds/destdir/x86_64-unknown-gnu-linux. I added the bin under it to
my PATH
Then do 2nd round build: ../abe/abe.sh -host i686-w64-mingw32 --target
aarch64-none-elf -build all
However, I'm getting config error while it building libiberty:
configure:5946: checking for library containing strerror
Configure:5978: error: Link tests are not allowed after GCC_NO_EXECUTABLES.
My understanding is that the linker cannot find glibc or eglibc.
What have I missed?
Any where I can find detail instruction like step by step to build Linaro
toolchain for running on Windows host?
Sincerely,
Qyq
== Progress ==
* Maintenance (CARD-1833 4/10)
- Clang driver:
- Passing -Wa,-mfpu and friends to assembler (D11147, D11148)
- Passing -I to assembler (D11185)
- Don't include libgcc/asm if using libunwind/libc++abi (D11153)
- Asm warnings:
- Trying again to look for a way to disable asm warnings from clang (D11216)
* Benchmarks (CARD-716 3/10)
- Benchmarking shrink-wrapping in AArch64
- Setting up LNT Benchmarks on A32/A64
- Scripts to collate / compare LNT results on the fly
- Benchmarking LNT on 3.5.2 and 3.6.2 on ARM and AArch64
- Multisampling, perf, and all goodness
- Getting ready to compare with 3.7.0 to come
* Releases (CARD-1431 1/10)
- Spinning release 3.7.0
- Many changes, CMake builds, etc.
- Fixing the test-release.sh script (D11326)
* Background (2/10)
- Code review, meetings, discussions, etc.
- Upgrading APM to Debian 3.16
== Plan ==
* Upstreaming pending reviews
* Continue release 3.7.0, benchmark it
* Start looking at the effects of the stride vectorizer on ARM/AArch64
# Progress #
* TCWG-806, aarch64 remote debugging multi-arch support. [6/10]
Some code refactor and fix various multi-arch issues when --wrapper
is used in GDBserver. Patches are being tested.
* TCWG-757, Patches review. [2/10]
* Misc, meeting, [2/10]
# Plan #
* TCWG-806, aarch64 remote debugging multi-arch support.
# Absence #
* 06th Aug - 10th Aug, GNU Tools Cauldron.
* 11th Aug - 14th Aug, Holiday.
--
Yao
1 day off (2/10)
== Progress ==
* backports/release/infra (1/10)
- reviews
* GCC (3/10)
- posted patch to fix vget_lane on armeb
- investigating AdvSIMD failures on aarch64_be.
Having a way to debug target code would help (qemu does not seem
to support aarch64_be yet, and I use the foundation model in bare
metal mode)
* Misc (4/10)
- meetings, conf-calls, emails
== Next ==
Holidays until Aug 3rd.
Benchmark infrastructure - TCWG-360 [5/10]
* More thinking/prototyping sufficiently-secure Jenkins benchmarking
* Converting LAVA end into multinode job
Benchmarking presentation [2/10]
* A couple of helpful discussions
* Read a couple of helpful docs
Misc [3/10]
=Plan=
* Complete multinode job
* Settle on a plan for Jenkins
* Redraft presentation
== This Week ==
* TCWG-777 (4/10)
- Resolved ICE caused by pass during gcc build but hit another ICE:
http://pastebin.com/RUAY6scB
- Current pass state: http://pastebin.com/AGXnSkrZ
- For test-case:
void f(int flags)
{
void foo(void);
if (flags & 1)
foo();
}
- temporaries don't exist for -O1
- for -O2 temps introduced by peephole2 due to define_peephole2
pattern in thumb2.md:1540
http://pastebin.com/3rEF8Te4
So this intentionally transforms rtx from
zeroextractsi_compare0_scratch to rtx from shiftsi3_compare0_scratch.
Why is it beneficial to do this transform ?
- Looking into combine pass
- For above test-case works with -marm for -O2.
* TCWG-830 (3/10)
- trying to understand vect dump
- untested patch: http://pastebin.com/K4UX5iYz
* Misc (2/10)
- Started looking at TCWG-835, loop vectorized on x86 but not arm
- Committed fix to segfault on -dx
- Conference calls
== Next Week ==
- Continue with TCWG-777, TCWG-830, TCWG-835
- Travel to Mumbai on 14th July (Tuesday) for US Visa Interview with
US Consulate.
Hospital and physio (2/10)
== Progress ==
o Upstream GCC (2/10)
* More work on ongoing patches
o Linaro GCC release (3/10)
* Reviewed patches for tcwg-release script
* Looked at validation issues and redo backports for 5.1
o Misc (3/10)
* Various meetings
* Upstream libunwind support
== Plan ==
- Continue ongoing tasks
== Progress ==
LLDB development
-- Debugging problems with process launch and debugserver crash on remote
connection. [TCWG-855] [6/10]
-- Caught the notorious issue mentioned above fix can be found here
http://reviews.llvm.org/D11129.
-- Figured arm lldb and lldbserver host builds on chromebook will put
steps on collaborate LLDB page soon. [1/10]
Miscellaneous [3/10]
-- Travel to Islamabad for Czech Republic visa
-- Meetings, emails, discussions etc.
== Plan ==
LLDB development
-- Follow up review process for process launch bug fix.
-- Run testsuite for armhf and figure out issues to fix.
-- Submit patches to fix build on older version of gcc.
Eid Holidays 17th to 21st July 2015
== This week ==
* TCWG-146 - Detect smin/umin idion (0/10)
- Waiting for upstream approval/review
* TCWG-140 - Transform end of loop conditions to min_expr (1/10)
- Blocked waiting on validation
* TCWG-833 - Exploit Wide Add operations when appropriate (8/10)
- Mere detailed investigation
- Working theory is to develop wide add rtl patterns that
incorporate vec_unpack to widen 16-bit to 32-bit
* Misc (1/10)
- Conference calls
- Conference call with Charles and Prathamesh to discuss
autovectorization progress
== Next week ==
- Validate patch for TCWG-140
- Develop patch for TCWG-833
- Validate TCWG-833 if successful patch is developed
- Investigate Aarch64 implementation
== Progress ==
* Add REG_EQUAL note for arm_emit_movpair (1/10)
- committed patch1 after testing again
* Factor conversion out of COND_EXPR - TCWG-849 (5/10)
- Gone through couple of iterations and committed the patch
- There are still some improvements need as follow up patches
* TACT -TCWG-851 (2/10)
- Started looking into spec2k
* Misc (2/10)
- Looked at interaction between gcc optimization passes
- gcc-patches, gcc-bugs list
- Meetings
== Plan ==
- GCC Bugs
- TACT driven optimization exploration for gcc
- Linaro bug 1318
== Progress ==
* Releases (CARD-1431 1/10)
- Released 3.6.2-final
* Maintenance (CARD-1833 5/10)
- Reducing runtime of some benchmarks in LLVM's
test-suite by getting rid of millions of useless
fprintf calls.
- Working on https://llvm.org/PR20700 some more
* Background (4/10)
- Code review, meetings, discussions, etc.
- Long TargetTuple review (D10969) / discussions
- Replacing broken buildbot USB disks (need to buy more)
- Bisecting self-hosting bot breakage
- Testing patches for ARM
- Jira farming
== Plan ==
* continue PR20700
* continue review/discussion of TargetTuple
* look again at PR20757
* maybe look at PR21000
* Off Monday (2/10)
== Progress ==
* published linaro-4.8 and 4.9 2015.06 releases
* linaro-5.1-2015.07 (1/10)
- backport reviews
- updated my helper script for reviews for cope with the git-only branches
* upstream (1/10)
- started looking at vget_lane Neon intrinsic failure on armeb
* infra/release/backports (2/10)
- reviews
* Misc (4/10)
- meetings, conf-calls, emails
== Next ==
* Off Tuesday
* backports, release, validation: update doc
* backports, reviews
* upstream work
== Later ==
* Off July 18th-Aug 3rd
Hi Linaro Toolchain Group,
I am comparing execution time (run time) of sin() trigonometric function
between following glibc (including libm) libraries for aarch64 (juno cortex
a57) :
Linaro glibc 2.19, Linaro eglibc 2.19, eglibc 2.19 (from
http://www.eglibc.org/) and Linaro glibc 2.21.
My observation for execution time of sin():
with Linaro glibc 2.19 and eglibc 2.19 = 1m24.703s (approx)
whereas,
with Linaro eglibc 2.19 & Linaro glibc 2.21 = 0m25.243s (approx)
Has Linaro optimized the libm functions for aarch64 in Linaro eglibc 2.19 ?
If yes, please point me to relevant reference from where I can find more
information on them.
Since the eglibc development from version 2.19 has stopped, will Linaro
maintain its own development version of glibc ?
I am using below snippet code and linux 'time' command to calculate the
time.
void sin_func(void)
{
double incr = 0.732;
double result, count = 0.0;
printf("%s\n", __func__);
while (count < 105414350.0) {
result = sin(count);
count += incr;
}
}
Thanks.
--
with regards,
Virendra Kumar Pathak
== Progress ==
LLDB development [TCWG-855] [8/10]
-- Figure out build steps for building cross lldb-server with
arm-linux-genueabihf-g++
-- Debugging of lldb-server communication packets for fixing lldb-server
armhf crash problem.
-- Comparison with androidabi version to figure out missing pieces
Miscellaneous [2/10]
-- Ubuntu reinstall on laptop
-- Follow up on Czech Republic visa
-- Meetings, emails, discussions etc.
== Plan ==
LLDB development
-- Work on lldb-server for armhf and try to figure out crash problems
[TCWG-855]
End of sick leave (will work 100% from home until my cast is removed).
== Progress ==
o Upstream GCC (2/6)
* Back to ongoing patches
o Linaro GCC release (7/6)
* Reviewed FSF branch merge into 4.8/4.9 branches
* Reviewed patches for tcwg-realease script
* Sent a first batch of backports for 5.1
Still pending due to validation infra. issues
o Misc (1/6)
* Various meetings
== Plan ==
- Continue ongoing tasks
* One day off on Fri. [2/10]
# Progress #
* TCWG-805, aarch64 native debugging multi-arch support. [5/10]
Patches (part1) are posted upstream for review, need to rewrite some
of them. The rest of them are OK and can be pushed in after 7.10
branch is created.
Watchpoint support in multi-arch debugging. Both kernel and GDB need
some fixes. Ongoing.
* Complete the document of aarch64 tracepoint work. [1/10]
* FSF GDB. [2/10]
Review intel mpx patch again, and read something on intel
mpx stuff.
# Plan #
* TCWG-805, update some patches in part 1 patch series, and continue
the multi-arch watchpoint work.
--
Yao
== Progress ==
* Add REG_EQUAL note for arm_emit_movpair (1/10)
- Updated and reposted
- https://gcc.gnu.org/ml/gcc-patches/2015-07/msg00295.html
- https://gcc.gnu.org/ml/gcc-patches/2015-06/msg02066.html
* Factor conversion out of COND_EXPR - TCWG-849 (3/10)
- https://gcc.gnu.org/ml/gcc-patches/2015-07/msg00246.html
* TACT -TCWG-851 (2/10)
- Small examples now seem to work.
- Have to do cross testing
* Git work flow for upstream patches -TCWG-848 (1/10)
- Updated based on review
* Misc (3/10)
- Looked up LLVM documents
- Looked at the TODO list Renato provided
- gcc-patches, gcc-bugs list
- Meetings
== Plan ==
- GCC Bugs
- TACT driven optimization exploration for gcc
- Linaro bug 1318
== This Week ==
* TCWG-856 (2/10)
- submitted patch to flatten cfgloop.h:
https://gcc.gnu.org/ml/gcc-patches/2015-07/msg00277.html
* TCWG-777 (4/10)
- Modified pass to not generate redundant stores
- Investigating ICE caused by the pass during gcc build
- Discussions for possible approaches with Christophe and Kugan
- Reading thru documentation on optabs and ccmp patches
* Misc (4/10)
- Patch sent upstream which fixes segfault in gcc for -dx option.
- Filed upstream binutils bug for "branch range out of error"
- Conference calls
- Travel to Mumbai for US Visa OFC appointment
== Next Week ==
- Word towards committing cfgloop.h flattening patch
- Continue working on TCWG-830, TCWG-777, TCWG-847
== Progress ==
* Maintenance (CARD-1833 4/10)
- ADD/SUB with negative immediates solved by a year old
patch from ARM, sigh. On to the next bug... :(
- Working on https://llvm.org/PR20700
* Buildbots (CARD-1823 2/10)
- Moving benchmark bot to CMake, fixing deepcopy bug in
environment that broke new builds
- Restarting a few bots that crashed
* Background (4/10)
- Code review, meetings, discussions, etc.
- A lot of code review this week...
- Blocking disrespectful web spiders in llvm.org
- Emacs now almost works as I expect
== Plan ==
* Continue PR20700
* Have a look at Polybench
* Look for some more bugs to fix
Benchmarking presentation [7/10]
* More reading
* Ran through a couple more drafts
Misc [3/10]
* Featuring a bug in my backup scripts that took ~1/10 to fix
=Plan=
Back to benchmark automation as main activity
Presentation in the background
== Progress ==
LLDB development
-- Support for running lldb on arm hard float abi targets [TCWG-855] [7/10]
-- Built lldb-server for armhf trusty chromebook
-- Figured out problem with lldb-server showing up i386-linux-gnu as
target triple.
-- Verfied load of arm-elf executable and breakpoint setting.
-- LLDB GDBserver dies while trying to run the target.
Miscellaneous [3/10]
-- Playing with highkey board and setup chromebook with armhf and armel
chroots on ssd.
-- Preparing document for Czech Republic visa
-- Meetings, emails, discussions etc.
== Plan ==
LLDB development
-- Further progress and try to fix run control on armhf targets [TCWG-855]
== This week ==
* TCWG-146 - Detect smin/umin idion (1/10)
- Patch sent upstream for approval
* TCWG-140 - Transform end of loop conditions to min_expr (4/10)
- Patch and investigating validation regressions
* TCWG-833 - Exploit Wide Add operations when appropriate (4/10)
- Investigation into why vectorizer does not exploit wide adds
* Misc (1/10)
- Conference calls
- Conference call with Kugan and Prathamesh to discuss GCC Git workflow
- Conference call with Charles and Prathamesh to discuss
autovectorization
== Next week ==
- Vacation
