I'm wondering if anyone knows a way to use Xcode 12 to debug an external with e.g. breakpoints while the external runs in PD?

I've only been able to find guides like the one below, which reference earlier Xcode versions:
http://cooperbaker.com/home/code/pd xcode/xcode 3.2.2 pd tutorial/

My version of Xcode is 12.3. I am using PD Vanilla 0.51.3.

For anyone interested, I was able to figure out how to do it using the original guide for earlier Xcode versions. The mistake I was making was to attach the full package of Pure Data to the debugging scheme as the executable. The correct way of doing it is to link the actual executable file as described below.

In Xcode (this is v 12.3):

1. Create a new debugging scheme
   

2. Edit the new scheme:
   

3. In the Executable drop-down menu, select Other...

4. Find the executable for pd (e.g. /Applications/Pd-0.51-3.app/Contents/Resources/bin/pd)

The settings for the scheme should look like this (notice the setting for Launch - Automatically)

5. Build and run the external. This will start Pd. The actual debugging will begin when you instantiate the external object inside a patch.

In my case, I added a breakpoint inside the bang() method. Upon receiving the bang, the breakpoint is reached:

Hi afsacp, thanks for sharing this. I'm running Xcode v13 and am having problem having it use my setpoints. I can set one and then when Pd launches, the setpoints turn gray and display the following error:

I've even added my extern to be automatically loaded on Pd startup.

If I try to run it on the command line with lldb /path/to/pd and I try to set a breakpoint

(lldb) breakpoint set -file pdhi.c --line 20

i get this:

Breakpoint 1: no locations (pending).
WARNING:  Unable to resolve breakpoint to any actual locations.

I confirmed that the extern is loaded because I can see it print to the PD log window on extern load and also on new or bang if I make a patch.

Have you had success with v13?

If you have a chance, here's my very simple project: https://github.com/rcadena/pdhi
And I'm using pd-lib-builder as a submodule for using a Makefile to build this stuff.

Thanks in advance.

Are you trying to build for Apple Silicon? I

tungee,

This is whatpd-lib-builder eventually uses for the architecture:

variable system = Darwin
variable target.arch = x86_64
variable target.triplet = x86_64 apple darwin20.6.0
variable version = 0.6.0
variable version.flag = -mmacosx-version-min=10.6

Not sure what would imply silicon. If I understand the problem it's that lldb doesn't see the dynamically loaded library (my external) and even after it's loaded, it still doesn't see it. I confess I'm mostly used to gdb and lldb is totally new to me.

@rxc, my apologies for the months-long wait in replying. I've always compiled the externals using the Build action in XCode (rather than running Makefile).

I don't know if this might make a difference, but can you try doing that and then loading the external in the debug scheme?

There may be a bit of config to do to make the XCode project build the external correctly. This includes using the correct architecture, and also some options that can be found in the link that I had posted at the very top of this thread:

http://cooperbaker.com/home/code/pd xcode/xcode 3.2.2 pd tutorial/

Also, I am not using XCode 13 (still on 12, really dreading the upgrade, as I know this will break many things on my other projects), but I suspect that the configurations for a dynamic library will be very similar and should therefore work using the same guidelines (this has been my experience when migrating my projects from XCode 9 through 12, and even making the jump from 32- to 64-bit--the build settings are pretty much the same).

Let me know if this helps!