From: Matthew Weber <matthew.weber@rockwellcollins.com>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH 07/11] package/busybox: fix applets runtime issue when building with clang cross-compiler
Date: Fri, 6 Sep 2019 22:11:44 -0500 [thread overview]
Message-ID: <CANQCQpYDyAcV6HkabqzVOBVPAgs9GA=ZtfronrAV=r=nt9LYVQ@mail.gmail.com> (raw)
In-Reply-To: <20190906090947.5476-8-romain.naour@smile.fr>
Romain,
On Fri, Sep 6, 2019 at 4:10 AM Romain Naour <romain.naour@smile.fr> wrote:
>
> Apply a patch contributed by Luis Marques on the Busybox mailing list [1]
> fixing a runtime issue (segfault) when busybox is compiled by Clang.
>
> The patch disable the compiler optimizations for Clang/LLVM only.
>
> Without this patch, busybox segfault with several applets
> (login on aarch64 using Clang 8.0.1, init on x86_64 using Clang 9.0.0rc3)
>
> [1] http://lists.busybox.net/pipermail/busybox/2019-June/087337.html
>
Got a "crtbegin.o no such file or directory" error when I setup a
build using master with qemu_aarch64_virt_defconfig (updated for
prebuilt external toolchain and enabling clang as cross-compiler).
https://paste.ubuntu.com/p/wxrmVTGVvp/
From your comment earlier on irc that you tested with 9.0.1 (x86_64
and aarch64), I wonder if this error is a difference between building
with clang 8.0.1 and 9.
I was able to build compiler-rt & libfuzzer with your series applied
and pass a runtime test (system still cross compiled with gcc but
using "[01/11] package/clang: help host-clang to find our external
toolchain" to find the sysroot). This was instead of using the -B
option when building libfuzzer as part of the runtime test.
Matt
next prev parent reply other threads:[~2019-09-07 3:11 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-06 9:09 [Buildroot] [PATCH 00/11] Add the support for Clang cross-compiler Romain Naour
2019-09-06 9:09 ` [Buildroot] [PATCH 01/11] package/clang: help host-clang to find our external toolchain Romain Naour
2019-09-06 9:09 ` [Buildroot] [PATCH 02/11] package/llvm: add the version major variable Romain Naour
2019-09-06 9:09 ` [Buildroot] [PATCH 03/11] package/clang: " Romain Naour
2019-09-06 9:09 ` [Buildroot] [PATCH 04/11] package/clang: install a toolchain-wrapper for the host clang cross-compiler Romain Naour
2019-09-06 9:09 ` [Buildroot] [PATCH 05/11] linux: override CC for the case CC is not GCC Romain Naour
2019-09-06 9:09 ` [Buildroot] [PATCH 06/11] package/meson: use TARGET_{CC, CXX} instead of TARGET_CROSS Romain Naour
2019-09-06 15:58 ` Romain Naour
2019-09-06 9:09 ` [Buildroot] [PATCH 07/11] package/busybox: fix applets runtime issue when building with clang cross-compiler Romain Naour
2019-09-07 3:11 ` Matthew Weber [this message]
2019-09-07 3:17 ` Matthew Weber
2019-09-07 8:02 ` Romain Naour
2019-09-09 13:49 ` [Buildroot] [External] " Matthew Weber
2019-09-06 9:09 ` [Buildroot] [PATCH 08/11] package/clang: add a host entry for clang Romain Naour
2019-09-06 9:09 ` [Buildroot] [PATCH 09/11] core: allow to use Clang as cross-compiler Romain Naour
2019-09-06 9:09 ` [Buildroot] [PATCH 10/11] toolchain: add a warning when Clang is used " Romain Naour
2019-09-06 9:09 ` [Buildroot] [PATCH 11/11] linux: don't set -Wno-attribute-alias flag " Romain Naour
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