[PD] Attaching Xcode debugger

[Dan Wilcox]

Ah, I forgot an important point: first configure with debugging symbols.

./configure --enable-debug

If building from a git clone, first generate configure using autoconf via:

./autogen.sh

Actually, this info is in the INSTALL.txt file, but I'm writing it here anyway. ;)

> On Feb 28, 2023, at 12:39 PM, Dan Wilcox <danomatika at gmail.com> wrote:
> 
> 
>> On Feb 28, 2023, at 12:00 PM, pd-list-request at lists.iem.at <mailto:pd-list-request at lists.iem.at> wrote:
>> 
>> Hello
>> 
>> So we all know how Apple is sandboxing like hell.
> 
> Sure, but allowing *any* old program to be debugged / decompiled in realtime is not the best for security implications, at least Apple thinks so.
> 
> Your subject is a little misleading as the "Xcode debugger" is essential lldb. Xcode itself simply wraps lldb when debugging and provides a UI top interact with it. In fact, on a debug build crash in Xcode, you can enter lldb commands directly into the console, ie. "bt" will provide a backtrace directly.
> 
>> How do people attach a debugger to pd to do development?
> 
> "lldb" like "gdb"
> 
> For quick tests of a known crasher, I usually use:
> 
> make
> cd bin
> lldb pd
> 
> This will use the system Tcl/Tk which has had issues for years now, but is enough for quick testing.
> 
> For best testing, build the .app and invoke the pd binary inside it. For example:
> 
> make
> make app
> lldb Pd-0.53-2.app/Contents/Resources/bin/pd
> 
> Once lldb launches, you have to start the process:
> 
> process launch
> 
> When a crash happens, you can get the backtrace with "bt", change frames with "f #", and print variables via "v". If you have used gdb before, this is a helpful crib sheet:
> 
> https://lldb.llvm.org/use/map.html <https://lldb.llvm.org/use/map.html>
> 
> Note: If you are using a newer macOS system and want to *also* use a newer version of Tcl/Tk, build Wish.app first then use it to make the Pd .app bundle:
> 
> ./macos/tcltk-wish.sh 8.6.12
> 
> produces a Wish-8.6.12.app. Next use it to build Pd .app with:
> 
> ./mac/osx-app.sh -w Wish-8.6.12.app 0.53-2
> 
> Now you can change the C sources and rebuild with:
> 
> make
> ./mac/osx-app.sh -w Wish-8.6.12.app 0.53-2
> 
>> Do I have to recompile pd myself as the long winded detour?
> 
> If you want debugging symbols, yes. Fortunately it is relative easy to compile Pd so I don't consider it "long-winded." In fact, we have spent quite a bit of time to make this both possible *and* relatively easy. (See above.)
> 
> --------
> Dan Wilcox
> @danomatika <http://twitter.com/danomatika>
> danomatika.com <http://danomatika.com/>
> robotcowboy.com <http://robotcowboy.com/>
> 
> 
> 

--------
Dan Wilcox
@danomatika <http://twitter.com/danomatika>
danomatika.com <http://danomatika.com/>
robotcowboy.com <http://robotcowboy.com/>



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20230228/9d7dfca2/attachment-0001.htm>