[Openmcl-devel] What's the minimal way to start using the ObjectiveC bridge?

Leo Liu sdl.web at gmail.com
Mon Apr 28 16:39:20 PDT 2014

On 2014-04-28 12:48 -0600, Gary Byers wrote:
> That (the "trace/bpt trap") is usually a symptom of Apple leaving a debugger
> breakpoint in some shared library (CoreFoundation, IIRC) if that library's
> initialization code discovers that it's running on something other than
> the initial thread.  (Apple's a multibillion dollar company; they'd have
> several K$ less in the bank if they bothered to think about this a bit more.)

That sounds familiar ;) Years ago I ran into this (plplot I think) and
you provided a workaround.

> CCL has worked around this for the last several years by forcing shared libraries
> to be opened on the main thread.  It's apparently the case that (at least on 10.9
> and whatever OSX version you're using) some library initialization code runs lazily,
> e.g., when some ObjC method is first invoked.  I'm curious enough about this to
> want to look at things under GDB, but not curious enough to build GDB from source
> or learn lldb ...


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