Re: [RFC 0/6] A different approach to startup-with-shell on macOS

[Pedro Alves <palves at redhat dot com>]

On 09/29/2018 08:50 PM, Simon Marchi wrote:
> On 2018-09-29 14:43, Pedro Alves wrote:
>> On 09/26/2018 12:11 PM, Tom Tromey wrote:
>>
>>> One question I have is whether it's possible to build gdb on an older
>>> version of macOS and then run it on a newer version.  If this can be
>>> done, then the #if-based approach taken in the final patch will not
>>> work.
>>
>> I'd suspect so.  What, e.g., does Homebrew do?  Do they have packages
>> built once for every Darwin version, or a single binary for several
>> Darwin versions?  I'd think the latter, but I don't really know.
>> And if indeed the latter, do they always build on the newest
>> Darwin, or perhaps the oldest?
> 
> Here's the answer I got on the homebrew IRC channel:
> 
>> homebrew generally does this (but i think it's probably more conservative than it needs to be)
>> a bottle should never be deployed to an older macos version than it was built on, anyway
> 
> "this" refers to whether the binaries always run on the same macos version as the one on which they have been built.

Great, that clears it up.

Thanks,
Pedro Alves