Enable libunwind from llvm |
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Issue descriptionCompiler-rt from llvm does not provide symbols for unwinding. Therefore, to be able to use compiler-rt in standalone SDK, libunwind needs to be installed as well.
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Apr 12 2017
The following revision refers to this bug: https://chromium.googlesource.com/chromiumos/overlays/chromiumos-overlay/+/6377b9f1ef10fe4eda562786a31d86700a4bc96f commit 6377b9f1ef10fe4eda562786a31d86700a4bc96f Author: Manoj Gupta <manojgupta@google.com> Date: Wed Apr 12 23:15:04 2017 Add llvm-libunwind ebuild. libunwind is required to be able to use compiler-rt libraries as default in clang. This change only adds the ebuild. Major difference from upstream: 1. Add support for cross compilation 2. Use different install location. 3. Cmake_Build_Type is not set (Upstream uses RelWithDebInfo). 4. Do not block sys-libs/libunwind for cross*- category. BUG= chromium:708794 TEST=sudo emerge sys-libs/llvm-libunwind works. TEST=sudo emerge cross-armv7a-cros-linux-gnueabi/llvm-libunwind works (after setting symlinks) Change-Id: I51030263a503243057b43b67344a7c4b4aefe2d8 Reviewed-on: https://chromium-review.googlesource.com/469175 Commit-Queue: Manoj Gupta <manojgupta@chromium.org> Commit-Queue: Yunlian Jiang <yunlian@chromium.org> Tested-by: Manoj Gupta <manojgupta@chromium.org> Trybot-Ready: Manoj Gupta <manojgupta@chromium.org> Trybot-Ready: Yunlian Jiang <yunlian@chromium.org> Reviewed-by: Yunlian Jiang <yunlian@chromium.org> [add] https://crrev.com/6377b9f1ef10fe4eda562786a31d86700a4bc96f/sys-libs/llvm-libunwind/llvm-libunwind-4.0_pre285905.ebuild
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Apr 13 2017
The following revision refers to this bug: https://chromium.googlesource.com/chromiumos/chromite/+/946abb4daba0eef5d3b2ac560ad9c26c0ba0285c commit 946abb4daba0eef5d3b2ac560ad9c26c0ba0285c Author: Manoj Gupta <manojgupta@google.com> Date: Thu Apr 13 22:19:02 2017 Add llvm-libunwind libraries for armv7a/aarch64/x86_64 cross targets. llvm-libunwind is required for using compiler-rt with c++ or asan. Add it in a way that adding more llvm packages in future is easy e.g. libcxx etc. Also enable compiler-rt packages for aarch64. BUG= chromium:708794 TEST=sudo cros_setup_toolchains --reconfig -t {armv7a, aarch64, x86_64}-cros-linux-gnu installed llvm-libunwind libraries. Change-Id: Id18c872cbdcb19b3c72e2abfffaaa5acd9cc9168 Reviewed-on: https://chromium-review.googlesource.com/476091 Commit-Ready: Manoj Gupta <manojgupta@chromium.org> Tested-by: Manoj Gupta <manojgupta@chromium.org> Reviewed-by: Yunlian Jiang <yunlian@chromium.org> [modify] https://crrev.com/946abb4daba0eef5d3b2ac560ad9c26c0ba0285c/scripts/cros_setup_toolchains.py
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Apr 17 2017
Added llvm-libunwind to sdk packages.
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Apr 21 2017
The following revision refers to this bug: https://chromium.googlesource.com/chromiumos/chromite/+/0f842f88c301e1778df7b21fc588d78e1e1885b7 commit 0f842f88c301e1778df7b21fc588d78e1e1885b7 Author: Manoj Gupta <manojgupta@google.com> Date: Fri Apr 21 22:45:41 2017 Enable llvm-libunwind libraries for armv7a/aarch64/x86_64 cross targets. Remove --nousepkg lines as libunwind binary package is now available. BUG= chromium:708794 TEST=sudo cros_setup_toolchains --reconfig -t {armv7a, aarch64, x86_64}-cros-linux-gnu installed llvm-libunwind libraries. Change-Id: Iec1fccfc4217915f66a5a2ba3bb23fffe1169ddd Reviewed-on: https://chromium-review.googlesource.com/479696 Commit-Ready: Manoj Gupta <manojgupta@chromium.org> Tested-by: Manoj Gupta <manojgupta@chromium.org> Reviewed-by: Rahul Chaudhry <rahulchaudhry@chromium.org> [modify] https://crrev.com/0f842f88c301e1778df7b21fc588d78e1e1885b7/scripts/cros_setup_toolchains.py |
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Comment 1 by bugdroid1@chromium.org
, Apr 12 2017