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List:       linaro-toolchain
Subject:    [ACTIVITY] week ending 14th June 2019
From:       Peter Smith <peter.smith () linaro ! org>
Date:       2019-06-17 9:20:07
Message-ID: CAEt-8LDJd2JYo_14nZcSZ23Wk3iABnDojRSqsbBj0W-NwC2s3g () mail ! gmail ! com
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[LLVM-571] Build GNU rmprofile toolchain with Linaro scripts (abe)
The existing build-system was only set up to build the A-profile bare
metal toolchain. Managed to find right combination of flags and
modifications to get a toolchain that zephyr can use.
[LLVM-158] Buildbot maintenance
An interesting failure introduced in LLD, but causing segfaults in
2-stage build, now fixed.
[LLVM-542] Zephyr code size investigation
- Rebased modifications to Zephyr
- Wrote script to build all the examples with GCC and Clang
- Fixed problems with modifications found by building all the examples
- Clang built helloworld no longer booting, need to investigate
- Found some areas for more investigation:
-- llvm-objcopy missing --gap-fill (used by one of the sample programs)
-- lld missing --print-memory-usage, while I'm using gcc for the main
link, zephyr build system seems to be feature testing using clang bare
metal default linker (lld)
-- clang always generates .note.GNU.stack, gcc embedded does not,
leading to lots of orphan section warnings. Probably best solved by
linker script modification.
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