From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Andres Freund <andres(at)anarazel(dot)de>, John Naylor <john(dot)naylor(at)enterprisedb(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: [RFC] building postgres with meson |
Date: | 2021-10-14 22:23:00 |
Message-ID: | CA+hUKGJcPZoJgQuwF3NOxymg6KW6azChcjFXB4fgbLQFBSXy0A@mail.gmail.com |
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Lists: | pgsql-hackers |
On Fri, Oct 15, 2021 at 11:00 AM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Peter E. did some hacking towards another solution awhile ago,
> but IIRC it involved changing the built binaries, and I think
> we concluded that the benefits didn't justify that.
Yeah, by now there are lots of useful blogs from various projects
figuring out that you can use the install_name_tool to adjust the
paths it uses to be absolute or relative to certain magic words, like
@executable_path/../lib/blah.dylib, which is tempting, but...
realistically, for serious hacking on a Mac, SIP is so annoying that
it isn't the only reason you'll want to turn it off: it stops
dtrace/dtruss/... from working, and somehow prevents debuggers from
working when you've ssh'd in from a remote machine with a proper
keyboard, and probably more things that I'm forgetting.
I wish I could find the Xnu source that shows exactly how and when the
environment is suppressed in this way to understand better, but it
doesn't jump out of Apple's github; maybe it's hiding in closed source
machinery...
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