Re: llvm configure failed ，please help me------uable to guess system type

[Zack Weinberg]

Please be advised that config-patches is a traditional mailing list
where we stick to the old convention of "bottom posting", that is,
replying to each piece of your message *underneath* that piece.
Keep reading for my actual reply.  Please use this convention
yourself when replying.

On Mon, Dec 16, 2024, at 2:18 AM, 龙雨洁 wrote:
>

The body of your message contained only a screen shot of the errors
you received.  As a courtesy to you, I have OCRed the screen shot,
corrected the OCR errors, and then cut it down to the most important
bit, which I quote below.  In the future, please do not send us screen
shots; instead, copy and paste the text itself into your message.
That way, we won't have to try to read tiny print in a low-resolution
image, or correct OCR errors.

> This script (version 2024-07-27), has failed to recognize the
> operating system you are using.
> [...]
> config.guess timestamp = 2024-07-27
> uname -m = sw_64
> uname -r = 5.10.0-46.10.uel20.jk.sw_64
> uname -s = Linux
> uname -v = #1 SMP Tue Sep 12 17:50:39 CST 2023

So, you're trying to build LLVM for a CPU architecture called "sw_64",
which config.guess does not know about.  Neither does LLVM itself,
nor the Linux kernel, GCC, Binutils, or any other piece of software
I checked.  You must have a kernel and a C compiler that have been
locally modified to support this CPU.

Also, I haven't been able to find any official documentation for the
"sw_64" architecture, only some notes from people who tried to reverse
engineer something called "Sunway" or "ShenWei" that may or may not be
the same thing.

If you want to get official support for the "sw_64" architecture into
the GNU toolchain and the Linux kernel, we're happy to work with you,
but it's going to be a long process.  The *very first* step of that
process is, the CPU's manufacturer, whoever they are, needs to make
the architecture manual publicly available.  I don't think we can help
you any further until that happens.  You may have better luck talking
to the people who developed the modified Linux kernel and distribution
you seem to be using.

zw