Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

To: Segher Boessenkool <segher@xxxxxxxxxxxxxxxxxxx>
Subject: Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
From: richard clark via Gcc-help <gcc-help@xxxxxxxxxxx>
Date: Wed, 10 Jan 2024 13:59:53 +0800
Cc: Mark Rutland <mark.rutland@xxxxxxx>, gcc-help@xxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20240109082647.GJ19790@gate.crashing.org>
References: <CAJNi4rO+Dw5qYDtyJVbuo0OqAoXpGq_Qq6xjH9cvMCAUnW+77g@mail.gmail.com> <CAJNi4rMHtM=39jzkzwqt++kVpSp0=XfDrVdY94WoW6B34oKwDA@mail.gmail.com> <ZZb2f0U4qTWDjCGj@FVFF77S0Q05N.cambridge.arm.com> <CAJNi4rOpzmQAW1Fjst-Em=SQ7q8QsQh0PWhVxUizrOW9JukOgQ@mail.gmail.com> <ZZvS8rigFJR8L56c@FVFF77S0Q05N> <fb6c8253fd90e66c036a85954c3299bc2c047473.camel@xry111.site> <CAJNi4rPj0Wc7ByqrS-GVLUUEnOFPZi8A5nLLCEEJErqAe16EZw@mail.gmail.com> <9aef98eed96ed32962ce90499291cb30ad5e3e14.camel@xry111.site> <20240109074843.GI19790@gate.crashing.org> <4ee8067e72028b070d92e10fa33ddde3a498cb48.camel@xry111.site> <20240109082647.GJ19790@gate.crashing.org>
Reply-to: richard clark <richard.xnu.clark@xxxxxxxxx>

Hi Segher,

A ported driver in linux kernel calls '__sync_val_compare_and_swap',
the cross-compiler 'aarch64-linux-gnu-gcc' doesn't complain
'__aarch64_cas1_sync' undefined reference, but the native compiler
will complain. As Mark mentioned, I double check that both cross and
native compiler should have  ''-moutline-atomics' option enabled, do
you know the reason for that?

Follow-Ups:
- Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: Segher Boessenkool

References:
- undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: richard clark via Gcc-help
- Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: richard clark via Gcc-help
- Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: Mark Rutland via Gcc-help
- Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: richard clark via Gcc-help
- Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: Mark Rutland via Gcc-help
- Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: Xi Ruoyao via Gcc-help
- Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: richard clark via Gcc-help
- Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: Xi Ruoyao via Gcc-help
- Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: Segher Boessenkool
- Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: Xi Ruoyao via Gcc-help
- Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
  - From: Segher Boessenkool

Prev by Date: -Wmissing-field-initializers on C++ warns about missing initializer despite designated initializers present
Next by Date: Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
Previous by thread: Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
Next by thread: Re: undefined reference to `__aarch64_cas4_sync' error on arm64 native build
Index(es):
- Date
- Thread

[Index of Archives] [Linux C Programming] [Linux Kernel] [eCos] [Fedora Development] [Fedora Announce] [Autoconf] [The DWARVES Debugging Tools] [Yosemite Campsites] [Yosemite News] [Linux GCC]