Hi!

On Mon, May 03, 2021 at 10:51:41AM +1000, Nicholas Piggin wrote:

Excerpts from Segher Boessenkool's message of May 3, 2021 3:55 am:

quoted

On Wed, Apr 29, 2020 at 10:57:16AM +1000, Nicholas Piggin wrote:

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Excerpts from Segher Boessenkool's message of April 29, 2020 9:40 am:
I blame toolchain for -mabi=elfv2 ! And also some blame on ABI document 
which is called ELF V2 ABI rather than ELF ABI V2 which would have been 
unambiguous.

At least ELFv2 ABI is correct.  "ELF ABI v2" is not.

quoted

I can go through and change all my stuff and config options to ELF_ABI_v2.

Please don't.  It is wrong.

Then I'm not sure what the point of your previous mail was, what did I 
miss?

I asked if you could make it clearer to people who do not know what this
is whether they want to use it.  Or that was my intention, anyhow :-/

quoted

Both the original PowerPC ELF ABI and the
ELFv2 one have versions themselves.  Also, the base ELF standard has a
version, and is set up so there can be incompatible versions even!  Of
course it still is version 1 to this day, but :-)

The point was for people who don't know ELFv2 has a specific meaning for 
powerpc,

It does not have *any* meaning outside of Power.  But people who do not
know what it is can assume the wrong things about it.  It isn't a great
name because of that :-(

(It's not as bad as the MIPS ABIs -- an older one is called "new" :-) )

then ELF ABIv2 is more explanatory about it being an abi change
rather than base elf change, even if it's not the "correct" name.

I very much disagree.  "ELF ABIv2" is completely meaningless.

If you don't want that then good, I also prefer to just use ELFv2. I 

Good :-)

think people who change this option can easily look up the name in 
toolchain and other docs.

Yeah.  As long as the defaults are good, whoever blows themselves up has
only themselves to blame :-P


Segher