RFC: Generate lib-names.h and stubs.h from ABI-LIST

[H.J. Lu]

On Thu, May 24, 2012 at 3:18 PM, Joseph S. Myers
<joseph@codesourcery.com> wrote:
> On Thu, 24 May 2012, H.J. Lu wrote:
>
>> > Anyway, that information should not be repeated in makefiles.  It's
>> > already in shlib-versions and everything should just get it from
>> > there.  The makefiles can give for each ABI the tuple to match in
>> > shlib-versions, akin to the ABI entries in shlib-versions.
>>
>> The problem is x86-64 build won't see sysdeps/x86_64/x32/shlib-versions
>> and x32 build won't see sysdeps/x86_64/64/shlib-versions.  i386 build
>> won't see neither.  How does it work?
>
> Put them all in sysdeps/x86/shlib-versions, where sysdeps/x86 is a new
> directory shared by all three ABIs (we know we want such directories
> anyway to get them all using the same installed headers).
>

sysdeps/x86_64/64/shlib-versions has

x86_64-.*-linux.*	DEFAULT			GLIBC_2.2.5
x86_64-.*-linux.*	ld=ld-linux-x86-64.so.2	GLIBC_2.2.5

sysdeps/x86_64/x32/shlib-versions has

x86_64-.*-linux.*	DEFAULT			GLIBC_2.16
x86_64-.*-linux.*	ld=ld-linux-x32.so.2	GLIBC_2.16
x86_64-.*-.*		ABI			x32-@OS@

Which one to use for x86-64 and x32 builds?

-- 
H.J.