Re: Re: [RISCV] RISC-V GNU Toolchain Biweekly Sync-up call (Jan 27, 2022)

jiawei
2022-01-28T01:05:05Z

&gt; -----原始邮件-----
&gt; 发件人: "Matthias Klose" <doko@ubuntu.com>
&gt; 发送时间: 2022-01-28 00:18:47 (星期五)
&gt; 收件人: jiawei@iscas.ac.cn, gcc@gcc.gnu.org, binutils@sourceware.org, gdb@sourceware.org, libc-alpha@sourceware.org
&gt; 抄送: cmuellner@ventanamicro.com, sinan@isrc.iscas.ac.cn, philipp.tomsich@vrull.eu, nelson.chu@sifive.com, wuwei2016@iscas.ac.cn, kito.cheng@sifive.com, yulong@nj.iscas.ac.cn, shihua@iscas.ac.cn
&gt; 主题: Re: [RISCV] RISC-V GNU Toolchain Biweekly Sync-up call (Jan 27, 2022)
&gt;
&gt; On 1/26/22 14:04, jiawei@iscas.ac.cn wrote:
&gt; &gt; Hi all,
&gt; &gt;
&gt; &gt; There is an agenda for tomorrow's meeting. If you have topics to
&gt; &gt; discuss or share, please let me know and I can add them to the agenda.
&gt; &gt;
&gt; &gt; Agenda:
&gt; &gt;
&gt; &gt;
&gt; &gt;
&gt; &gt;
&gt; &gt;
&gt; &gt; - Bump GCC default ISA spec and got bug report[1] for that.
&gt;
&gt; Tried to join the meeting, but it ended early apparently.
&gt;
&gt; Using in Debian and Ubuntu binutils 2.38, I see then with GCC 11.2 warnings for
&gt; every link:
&gt;
&gt; /usr/bin/ld: warning: /usr/lib/gcc/riscv64-linux-gnu/10/crtn.o: mis-matched ISA
&gt; version 2.0 for 'i' extension, the output version is 2.1
&gt; /usr/bin/ld: warning: /usr/lib/gcc/riscv64-linux-gnu/10/crtn.o: mis-matched ISA
&gt; version 2.0 for 'a' extension, the output version is 2.1
&gt; /usr/bin/ld: warning: /usr/lib/gcc/riscv64-linux-gnu/10/crtn.o: mis-matched ISA
&gt; version 2.0 for 'f' extension, the output version is 2.2
&gt; /usr/bin/ld: warning: /usr/lib/gcc/riscv64-linux-gnu/10/crtn.o: mis-matched ISA
&gt; version 2.0 for 'd' extension, the output version is 2.2
&gt;
&gt; Are there any plans to backport the support for ISA 2.1/2.2 to GCC 11? Or do we
&gt; need to configure binutils to use 2.0 until the compiler is changed to GCC 12?
&gt;
&gt; There's also no documentation about that change, at least in binutils. Should
&gt; that be mentioned in the release notes?
&gt;
&gt; Thanks, Matthias

Hi Matthias,

Here is a link that Kito Cheng explain this change:

https://groups.google.com/a/groups.riscv.org/g/sw-dev/c/aE1ZeHHCYf4

I think you can use aditional option --with-isa-spec=2.2 to solve this problem

Good luck,
PLCT Jiawei

</doko@ubuntu.com>