- linaro-toolchain - lists.linaro.org

smc #0 unsuppored (bug 669912) gcc-4.5 linux-2.6.38

by AJ ONeal

I just did `git checkout` for linaro/linux-2.6.38 and tried compiling with CROSS_COMPILE=arm-linux-gnueabi- and I get this smc #0 error. The bug filed here is marked as fixed, but it's still broken for me: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/669912 I ran into this error once before, but I can't find my notes for it. I think the solution was to append something like $(sec) on a line in the Makefile. Any ideas? AJ ONeal

15 years

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Changing how we make changes

by Michael Hope

Hi there. I'd like to change and clarify how we make changes inside Linaro toolchain projects. The write-up is here: https://wiki.linaro.org/WorkingGroups/ToolChain/MakingChanges The short story is that now, just like mainline, the developers themselves do the final commit or merge into bzr. I've volunteered three of you on a review roster so that someone has the responsibility for reviewing patches each week. The roster is: * Ramana week 15, 17, 20, ... starting the 11th of April 2011 * Richard week 16, 18, 21, ... starting the 18th of April 2011 * Ulrich week 17, 19, 22, ... starting the 25th of April 2011 Anyone is welcome to review patches. The more eyes the better. Thoughts? -- Michael

15 years

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What is __aeabi_unwind_cpp_pr0?

by AJ ONeal

I'm just curious as to what "__aeabi_unwind_cpp_pr0" is or means. I can't find any explanation by googling. I'm about to post a separate e-mail with my problem concerning it. AJ ONeal

15 years

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[ACTIVITY] 11th -15th April

by Andrew Stubbs

Reviewed and approved Revital's do-loop patch, and Ira's store sinking patch. More precisely, I reviewed the test results from Michael's test system, and cast my eye over the patch to look for anything obvious. I don't pretend to know exactly what they do. Attended Ramana's thumb2 optimization discussion. Continued work on merging useful patches from CodeSourcery. Pushed the new patch set to Launchpad for testing in Michael's system. Pointed Bernd at lp:758082 - another probable shrink-wrap failure. Bernd responded with a new patch, and asked me to test it. I've pushed it to Launchpad and created a merge request. Posted an old patch of Dan's upstream: http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg03144.html Pinged my thumb2 constants patch upstream. Richard E responded with some issues to address. I'll need to change the names of the constraints, at least. At Ramana's request, tested the NEON scheduling patch with SPEC2000. Encountered trouble with time-outs. Fixed those and retested. Posted an updated version of my EABI half-precision patch: http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg03210.html Merged my backport of Julian's -fstrict-volatile-bitfields bug fix into Linaro GCC. The testing of the Android patches came back with a few test differences, but they appear to be unrelated to the patch, so are probably environmental. I've merged the changes to Linaro GCC. [Also spent most of Friday working on internal CS tasks.] ---- Upstream patched requiring review: * NEON scheduling patch http://gcc.gnu.org/ml/gcc-patches/2011-02/msg01431.html * NEON test cases http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg03144.html * ARM EABI half-precision functions (reposted) http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg03210.html

15 years

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[ACTIVITY] Apr.11 -- 17

by Chung-Lin Tang

== Last week == * CoreMark regressions: pushed a merge of my two upstream patches to Linaro 4.5, some current numbers are here: http://lists.linaro.org/pipermail/linaro-toolchain/2011-April/001087.html. * Continued working on another combine patch for improving CoreMark, hopefully ready to submit this week. * Committed fix for PR48325 (NEON POST_INC/PRE_DEC load/stores for struct modes) upstream. * Committed fix for PR48250 / Launchpad #723185 upstream. * Launchpad #689887, ICE in get_arm_condition_code(). My prior patch was tested to cause native bootstrap failure on Linaro 4.5, though retesting on upstream trunk worked fine. Still investigating. * Booked travel for Linaro-Budapest event. == This week == * Current combine patch. * Some unresolved patches, like PR46888. * Launchpad #689887, hope to figure this out.

15 years

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First session ideas for the summit

by Michael Hope

I've started up a page with ideas for sessions at next month's summit: https://wiki.linaro.org/MichaelHope/Sandbox/1111Blueprints They're a pretty direct map to the TSC technical topics so far which is nice to see. Feel free to add other ideas to the page. Each session is around 45 minutes, needs to be fairly well understood by the drafter beforehand, and should have concrete actions coming out of it. It's fine to have a few future/blue sky sessions but not too many. We'll discuss these at tonights meeting and assign drafters. -- Michael

15 years

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Some initial notes on the effects of vldN and vstN vectorisation

by Richard Sandiford

I've now submitted the initial vldN and vstN work, so I thought I'd see how often it triggers for natty's libav package. I've put some initial results here: https://wiki.linaro.org/RichardSandiford/Sandbox/NeonLibAv There are more files to go through, so this isn't complete. I've also left out cases that were very similar to the ones given. Some of the code is reasonable, while others are obviously not as good as they could be. I don't think the problems are really to do with the vldN and vstN work itself though. They seem to be due to the underlying interleaved load/store detection, or in the handling of widening operations. Richard

15 years, 1 month

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[ACTIVITY] 2011-04-15

by David Gilbert

== Bug triaging == * Bug 745843 (vtk ftbfs) got it down to a bad arm/thumb transition - identified as a linker error and handed off to RichardS * Bug 758082 (augeas ftbfs) tracked it down to overwrite of a parameter in a variadic function before it got stacked; identified by Ramana as another instance of the shrink-wrap bug. * Bug 745861 (petsc ftbfs) isolated the collection of different mpi related problems this is hitting; really need to find an mpi expert on this * Bug 745863 & bug 745891 (ftbfs's) - both were compilations that timed out; verified this was due to using lots of RAM and also using lots of RAM on x86 (> ~500MB) - marked as invalid until the build farm grows more RAM * Bug 757427 gconf seg fault - failed to reproduce under various tests (although Michael has now managed to catch it in the act) == Optimisation == * neon memcpy tweeking; added prefetches and unrolled the core loop - now comparable perf to bionic memcpy in most cases (slower on misaligned destination, faster in other cases) * tweaked latrace to print address/length of argument strings so I can get some stats on routine usage. Dave

15 years, 1 month

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[ACTIVITY] Weekly status

by Richard Sandiford

== This week == * Worked on a fix for https://bugs.launchpad.net/gcc-linaro/+bug/758082 Submitted the patch upstream. * Finished first cut of vldN and vstN vectorisation. Send the patches upstream. Most of the patches have been approved, but I'll wait for the others before committing. * Looked at how the vectoriser handles natty's libav. Found some nice loops, some OK-but-could-do-better, and some really atrocious. Wrote up the results here: https://wiki.linaro.org/RichardSandiford/Sandbox/NeonLibAv * Started writing micro benchmarks for each loop on that page. I'm about half way through now (starting from the bottom). * Started looking at whether the changes affect DENbench. * Patch review. * Wrote a small follow-up to the fix for LP 758082. * Some patch pinging. == Next week == * More micro benchmarks. * More DENbench. * Submit a merge request for the intrinsics improvements, if the remaining patches are approved. * Look at the poorer libav loops in more detail. Richard

15 years, 1 month

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[ACTIVITY] report week 15

by Peter Maydell

RAG: Red: Amber: Green: now only 6 "core ARM emulation" patches in qemu-linaro not yet upstreamed (still lots of omap3 patches, though) Current Milestones: | Planned | Estimate | Actual | qemu-linaro 2011-04 | 2011-04-21 | 2011-04-21 | | Historical Milestones: finish qemu-cont-integration | 2011-01-25 | 2011-01-25 | handed off | first qemu-linaro release | 2011-02-08 | 2011-02-08 | 2011-02-08 | qemu-linaro 2011-03 | 2011-03-08 | 2011-03-08 | 2011-03-08 | == maintain-beagle-models == * some early prep for next week's qemu-linaro release == merge-correctness-fixes == * patch to fix Neon UNDEFs sent upstream and committed * patch fixing an overflow in signed VABAL.s32 upstreamed, committed * investigated a bug report which turns out to be that if you try to single step over an instruction which UNDEFs using qemu's gdb stub we execute the insn at the UNDEF vector and stop after it rather than stopping at the UNDEF vector * some investigation of qemu mishandling of FP exception flag setting; putting this on hold though, as it really isn't very high priority * reviewed patches from Aurelien doing some general softfloat cleanup == other == * trying to nail down proposed QEMU work for next cycle; work-in-progress: https://wiki.linaro.org/PeterMaydell/Qemu1111 * two IRC interviews for QEMU Google Summer of Code student to do some work on upstreaming of the Android emulator device models * meetings: toolchain, standup, architecture Q&A, divisional update Current qemu patch status is tracked here: https://wiki.linaro.org/PeterMaydell/QemuPatchStatus Absences: Holiday: 22 Apr - 2 May 9-13 May: UDS, Budapest (maybe) 15-16 August: QEMU/KVM strand at LinuxCon NA, Vancouver [LinuxCon proper follows on 17-19th]

15 years, 1 month

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CoreMark Status

by Chung-Lin Tang

Hi, I've just pushed a merge of the current upstream patches for resolving the CoreMark regressions. (https://code.launchpad.net/~cltang/gcc-linaro/coremark-part1) To give a quick benchmark of the current status, testing Linaro 4.5 before/after the merge of those two patches: Optimization options used were just plain '-O2 -mtune=cortex-a9', tested on one of our Pandaboards running Maverick; all numbers are Iterations/Sec averaged from 3 runs. r99492 r9942+patches improve % -march=armv5te 2786.87 2848.12 2.20 % -march=armv7-a 2474.50 2775.92 12.18 % -march=armv7-a -mthumb 2297.86 2356.59 2.56 % I'll have to re-test to be sure, but the numbers/improvements obtained using upstream trunk should not be too far off, at least the ARM mode ones. As we discussed in prior meetings, there's still one point of regression identified that's in solving, which hopefully will finally bring the ARMv7-A numbers above ARMv5TE. Chung-Lin

15 years, 1 month

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[Activity] 10th - 14th April

by Revital Eres

Hello, - Tracking down bugs exposed while testing a patch for SMS to avoid using -fauto-inc-dec flag and preparing fixes for them. Also, prepared a fix for PR47013. - Continue looking into DENbench and updating https://wiki.linaro.org/Internal/ToolChain/Benchmarks. Thanks, Revital

15 years, 1 month

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[Activity] 11th - 14th April

by Ramana Radhakrishnan

== GCC == Progress: * Spent some time digging into binutils issue for Neon but still not sure why I see the problem when this is fixed in 2.21 branch and no one else see this. * Fixed PR 48090 upstream. * Some patch review. * T2 performance meeting. Plans when I'm back: * Continue looking at divmodsi4 improvements. * Continue looking at excessive VFP moves. * Backport the fix for the initialization of cgraph into FSF 4.5 branch. Meetings: * 1-1s * Linaro toolchain meeting * T2 performance. * Linaro@UDS meeting. Absences: * April 15 – 26 -> Booked. * May 9-14 - LDS Budapest

15 years, 1 month

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Issue with noreturn static function with unused arg

by Loïc Minier

hey This problem with busybox: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=621137 seems to be a toolchain issue. It occurs with FSF GCC 4.5.2 but not 4.6, and it doesn't occur with Linaro GCC 4.5 but it does with Debian gcc-4.5. I'm trying to identify the fix which Linaro applied to solve this! :-) Michael Hope told me he remembers we fixed something similar for Qt, but he couldn't find the patch and suggested I post here to get feedback. I've pushed ash.i and .s at: http://people.linaro.org/~lool/ash.i which you can build with: gcc -save-temps -std=gnu99 -Wall -Wshadow -Wwrite-strings -Wundef -Wstrict-prototypes -Wunused -Wunused-parameter -Wunused-function -Wunused-value -Wmissing-prototypes -Wmissing-declarations -Wdeclaration-after-statement -Wold-style-definition -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections -fno-guess-branch-probability -funsigned-char -static-libgcc -falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 -g -Os -c -o ash2.o ash.i the interesting part is that ash.s has tryexec as not returning, when it does return: grep ^tryexec ash.s -A5 | grep return this seems to be due to the combination of tryexec being static, its parent being noreturn, and one argument of tryexec being unused. Any idea of which Linaro patch solved this? :-) Does it make sense to raise this to FSF GCC 4.5? Thanks! -- Loïc Minier

15 years, 1 month

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First toolchain estimate for the next cycle

by Michael Hope

Hi there. Mounir and I have been looking at the work for next cycle. A summary spreadsheet with notes is available here: https://spreadsheets0.google.com/ccc?key=ty1c-H56f0GxnL1Hk9LCmRg I'm very interested in feedback, especially on the time estimates and extra topics we should suggest to the TSC. See the notes at the top and feel free to add items or estimates straight into the sheet - anyone can view and anyone at Linaro should be able to edit. -- Michael

15 years, 1 month

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Differences in build hosts

by Michael Hope

Hi there. I ran a build of gcc-linaro-4.5+bzr99491 on ursa1 through 4 to see if there was any difference in build machines. The following tests had different results: * gcc.c-torture/compile/limits-structnest.c * gcc.dg/graphite/block-4.c * largefile.c * obj-c++.dg/template-5.mm * obj-c++.dg/template-5.mm * obj-c++.dg/template-6.mm * obj-c++.dg/template-6.mm * objc/execute/class-4.m I suspect that they're all caused by running the testsuite in parallel and the host running out of memory. limits-structnest takes around 850 MB of RAM and passes on the machine with swap (ursa1) and fails on the others. block-4.c takes 2:35 to run and timed out on ursa1 and passed on the others which may be due to ursa1 swapping heavily while running a limit test in parallel. The obj-c tests show various forms of killed, and suggest that they were killed due to another process taking all the memory. I'll change the machines to use the full 1 G of memory, run the test suite in sequential mode, and see how things go. I haven't investigated largefile.c - it's a PCH test and these fail randomly. Regarding block-4.c, it takes 155 s to run which is too close to the default 300 s for my taste. Should we add a dg-timeout-factor 4.0 to it similar to block-3.c? -- Michael

15 years, 1 month

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[Activity] April 4th - 8th

by Ramana Radhakrishnan

Missed sending this out earlier this week. == GCC == Progress: * Sync'd with Andrew about T2 performance stuff. * Spent some time investigating what could be done for divmodsi4 improvements . Working through the various phases. Not done tree level stuff for a while so my knowledge of the API is a a bit rusty. * Some upstream bugzilla duty. Plans: * Continue looking at divmodsi4 improvements. * Continue looking at excessive VFP moves. * Look at binutils + neon issue. * Performance kick-off meeting Meetings: * 1-1s * Linaro toolchain meeting * Andrew Stubbs meeting for 1 hour about T2 performance. Absences: * April 13th - Internal ARM conference. Not at desk all day. * April 15 – 26 -> Booked. * May 9-14 - LDS Budapest

15 years, 1 month

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[ACTIVITY] weekly status

by Ken Werner

Hi, libunwind: * started to look on how to resume from a given stack frame: * other platforms use setcontext * setcontext is not implemented on ARM (glibc) * the *context functions have been marked obsolescent in Posix * http://pubs.opengroup.org/onlinepubs/009695399/functions/makecontext.html pandaboard: * gdb doesn't find separate debug info of libraries that have been put into a multiarch directory (#758619) Note: I'll be out of office to attend a class till (including) Friday. Regards Ken

15 years, 1 month

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Today's T2 perf call.

by Ramana Radhakrishnan

A rough agenda for today's call. I'll put this on the wiki after the call. 1. Go over what we are all doing today - roughly Areas of investigation that we are looking at for near term. a. divmodsi4 work. b. Unnecessary VFP to integer register moves because of addressing modes availability. c. Thumb2 constants work d. Additional areas for headroom in DENBENCH. e. Coremark regressions fix up f. Revisions causing major regressions in coremark 2. Find a way of replicating the benchmarking results and make sure we get similar results to Michael and we are doing roughly the same thing. 3. Regular bi-weekly call following the Toolchain WG meeting ? Or do we organize another call ?

15 years, 1 month

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[Bug 758082] [NEW] [armel] segfaults in make check pass when built with optimization

by Jani Monoses

Public bug reported: FTBFS on armel https://launchpadlibrarian.net/68239668/buildlog_ubuntu-natty-armel.augeas_… not apparent from the log but the failing of test-interpreter.sh is due to a core dump. Starting program: /home/jani/work/ftbfs/aug/augeas-0.8.0/src/.libs/lt- augparse --nostdinc -I . fail_let_no_exp.aug Program received signal SIGSEGV, Segmentation fault. strlen () at ../ports/sysdeps/arm/strlen.S:29 29 ../ports/sysdeps/arm/strlen.S: No such file or directory. in ../ports/sysdeps/arm/strlen.S (gdb) bt #0 strlen () at ../ports/sysdeps/arm/strlen.S:29 #1 0x4016c050 in _IO_vfprintf_internal (s=<value optimized out>, format=<value optimized out>, ap=<value optimized out>) at vfprintf.c:1620 #2 0x401d7b66 in __vasprintf_chk (result_ptr=0xbee5097c, flags=1, format=0x400d961c "%s", args=...) at vasprintf_chk.c:68 #3 0x400bfad6 in vasprintf (info=<value optimized out>, code=<value optimized out>, format=0x400d961c "%s", ap=...) at /usr/include/bits/stdio2.h:199 #4 format_error (info=<value optimized out>, code=<value optimized out>, format=0x400d961c "%s", ap=...) at syntax.c:96 #5 0x400bfd98 in syntax_error (info=0x1, format=0x400d961c "%s") at syntax.c:124 #6 0x400c3e96 in augl_error (locp=<value optimized out>, term=<value optimized out>, scanner=<value optimized out>, s=0x400d7abc "syntax error") at parser.y:628 #7 0x400c54f8 in augl_parse_file (aug=0x1ef1878, name=<value optimized out>, term=0xbee50a64) at parser.y:362 #8 0x400c153a in load_module_file (aug=0x1ef1878, filename=0xbee50ddb "fail_let_no_exp.aug") at syntax.c:1951 #9 0x400bbf0a in __aug_load_module_file (aug=0x1ef1878, filename=0xbee50ddb "fail_let_no_exp.aug") at augeas.c:1447 #10 0x00008b04 in main (argc=<value optimized out>, argv=0xbee50c84) at augparse.c:131 ** Affects: gcc-linaro Importance: Undecided Status: New ** Affects: augeas (Ubuntu) Importance: Undecided Status: New ** Tags: arm-porting-queue ** Also affects: gcc-linaro Importance: Undecided Status: New ** Summary changed: - segfaults in make check pass when built with optimization + [armel] segfaults in make check pass when built with optimization ** Tags added: arm-porting-queue -- You received this bug notification because you are a member of Linaro Toolchain Developers, which is subscribed to Linaro GCC. https://bugs.launchpad.net/bugs/758082 Title: [armel] segfaults in make check pass when built with optimization Status in Linaro GCC: New Status in “augeas” package in Ubuntu: New Bug description: FTBFS on armel https://launchpadlibrarian.net/68239668/buildlog_ubuntu-natty-armel.augeas_… not apparent from the log but the failing of test-interpreter.sh is due to a core dump. Starting program: /home/jani/work/ftbfs/aug/augeas-0.8.0/src/.libs/lt- augparse --nostdinc -I . fail_let_no_exp.aug Program received signal SIGSEGV, Segmentation fault. strlen () at ../ports/sysdeps/arm/strlen.S:29 29 ../ports/sysdeps/arm/strlen.S: No such file or directory. in ../ports/sysdeps/arm/strlen.S (gdb) bt #0 strlen () at ../ports/sysdeps/arm/strlen.S:29 #1 0x4016c050 in _IO_vfprintf_internal (s=<value optimized out>, format=<value optimized out>, ap=<value optimized out>) at vfprintf.c:1620 #2 0x401d7b66 in __vasprintf_chk (result_ptr=0xbee5097c, flags=1, format=0x400d961c "%s", args=...) at vasprintf_chk.c:68 #3 0x400bfad6 in vasprintf (info=<value optimized out>, code=<value optimized out>, format=0x400d961c "%s", ap=...) at /usr/include/bits/stdio2.h:199 #4 format_error (info=<value optimized out>, code=<value optimized out>, format=0x400d961c "%s", ap=...) at syntax.c:96 #5 0x400bfd98 in syntax_error (info=0x1, format=0x400d961c "%s") at syntax.c:124 #6 0x400c3e96 in augl_error (locp=<value optimized out>, term=<value optimized out>, scanner=<value optimized out>, s=0x400d7abc "syntax error") at parser.y:628 #7 0x400c54f8 in augl_parse_file (aug=0x1ef1878, name=<value optimized out>, term=0xbee50a64) at parser.y:362 #8 0x400c153a in load_module_file (aug=0x1ef1878, filename=0xbee50ddb "fail_let_no_exp.aug") at syntax.c:1951 #9 0x400bbf0a in __aug_load_module_file (aug=0x1ef1878, filename=0xbee50ddb "fail_let_no_exp.aug") at augeas.c:1447 #10 0x00008b04 in main (argc=<value optimized out>, argv=0xbee50c84) at augparse.c:131

15 years, 1 month

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Conference code for today's Thumb-2 kick off call

by Michael Hope

Hi everyone. The conference code for today's call is 5238686884. The dial in numbers are the same as the weekly meeting. See: http://wiki.linaro.org/WorkingGroups/ToolChain/Meetings -- Michael

15 years, 1 month

1
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[Bug 757427] [NEW] gconftool-2 segfaults on arm

by Jani Monoses

Public bug reported: The 2.32.2 upload of gconf is likely miscompiled and segfaults. This leads to other armel FTBFSs in the archive when calling gconftool-2 as part of the install phase. ** Affects: gcc-linaro Importance: Undecided Status: New ** Affects: gconf (Ubuntu) Importance: Undecided Status: New ** Tags: arm-porting-queue ** Package changed: ubuntu => gconf (Ubuntu) ** Also affects: gcc-linaro Importance: Undecided Status: New -- You received this bug notification because you are a member of Linaro Toolchain Developers, which is subscribed to Linaro GCC. https://bugs.launchpad.net/bugs/757427 Title: gconftool-2 segfaults on arm Status in Linaro GCC: New Status in “gconf” package in Ubuntu: New Bug description: The 2.32.2 upload of gconf is likely miscompiled and segfaults. This leads to other armel FTBFSs in the archive when calling gconftool-2 as part of the install phase.

15 years, 1 month

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[ACTIVITY] Weekly status

by Richard Sandiford

== Last week == * Sent a fix for PR target/46329 upstream. * Discussed with Richard Guenther how to represent the interleaved load/store "functions" that we're adding to gimple. Sent a patch upstream for comments. Richard confirmed on IRC that he was happy with it, and no-one else has objected. * Spent most of the week on the vectorisation itself, and on the testsuite. == This week == * Finish work on vectorisation testsuite and submit. Richard

15 years, 1 month

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[ACTIVITY] Apr.04 -- Apr.10

by Chung-Lin Tang

== Last week == * Mon/Tue (Apr.4--5): Tomb-sweeping Day, public holiday. * PR48250 / CS Issue #9845 / Launchpad #723185. Unaligned DImode reload under NEON. Worked on new patch, submitted to gcc-patches after testing on Friday. Awaiting review. == This week == * CoreMark ARMv6/v7 regressions: working on new combine patch.

15 years, 1 month

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[ACTIVITY] 4th - 9th April

by Andrew Stubbs

The test results for the patch for lp:675347 on GCC 4.6 came back clean, so I merged it to Linaro GCC 4.6. The test results for lp:675347 on 4.5 had problems though, but they might be unrelated to the patch. The test results for the "discourage NEON on A8" patch had similar failures, and that's a 4.6 testsuite. Richard Earnshaw approved the Thumb register allocation patch. I've committed it upstream, and updated the patch trackers. It was already on the Linaro 4.6 branch. Now that GCC 4.6 is released, switched all the Linaro tracking tickets from 'Fix committed' to 'Fix released'. Merged from FSF 4.5 to Linaro 4.5 and submitted the patch for test. The tests came back clean, so I pushed it to the 4.5 branch. (Yay for Michael's new test service!) Merged more patches from SG++ to Linaro. Or, at least considered them for merge. Mostly I decided that they were not appropriate for Linaro, at least, not just yet. I have yet to push these patches to Launchpad. Reviewed Richard Sandiford's patch for LP:714921. Retried the Android build with a view to integrating Android support in Linaro GCC 4.5 (4.6 should already support it). Eventually, after downloading many different git repositories and branches, and maxing out the memory on my machine a few times, I managed a successful build using the toolchain the Android team are using. I then backported Maxim's patches to Linaro GCC 4.5, and built and tested that, and got another successful Android build. I've pushed the patched toolchain to Launchpad at lp:~ams-codesourcery/gcc-linaro/android for testing. All being well, I'll merge Android support into the 4.5 trunk in time for the next release. ---- Upstream patched requiring review: * Thumb2 constants: http://gcc.gnu.org/ml/gcc-patches/2010-12/msg00652.html * ARM EABI half-precision functions http://gcc.gnu.org/ml/gcc-patches/2011-02/msg00874.html * NEON scheduling patch http://gcc.gnu.org/ml/gcc-patches/2011-02/msg01431.html

15 years, 1 month

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