[R-SIG-Mac] Running R with lldb

[Prof Brian Ripley]

One of the suggestions in

https://cran.r-project.org/doc/manuals/r-devel/R-exts.html#Debugging-on-macOS

should help.  Both worked for my build of R-devel yesterday ....


On 05/08/2020 14:25, Duncan Murdoch wrote:
> I'm now successfully building R-devel in /Users/murdoch/R/R-devel.  If I 
> run it from that directory using
> 
>   bin/R -d lldb
> 
> it starts, but "run" gives this error:
> 
> Process 11165 launched: '/Users/murdoch/R/R-devel/bin/exec/R' (x86_64)
> dyld: Library not loaded: libRblas.dylib
>    Referenced from: /Users/murdoch/R/R-devel/bin/exec/R
>    Reason: image not found
> Process 11165 stopped
> * thread #1, stop reason = signal SIGABRT
>      frame #0: 0x00000001004c7ede dyld`__abort_with_payload + 10
> dyld`__abort_with_payload:
> ->  0x1004c7ede <+10>: jae    0x1004c7ee8               ; <+20>
>      0x1004c7ee0 <+12>: movq   %rax, %rdi
>      0x1004c7ee3 <+15>: jmp    0x1004c6408               ; cerror_nocancel
>      0x1004c7ee8 <+20>: retq
> Target 0: (R) stopped.
> 
> I can start it from the /Users/murdoch/R/R-devel/lib directory where 
> libRblas.dylib lives.  Setting DYLD_LIBRARY_PATH or LD_LIBRARY_PATH to 
> point there doesn't help (either on the bin/R command line or exported). 
>   Is there some other way to run it from whatever directory I happen to 
> be in?
> 
> Duncan Murdoch
> 
> On 02/05/2020 11:26 p.m., Simon Urbanek wrote:
>> Vince,
>>
>> Apple no longer allows debugging of distributed apps - see R for Mac 
>> FAQ 10.17:
>> http://mac.r-project.org/bin/macosx/RMacOSX-FAQ.html#I-cannot-attach-debugger-to-R 
>>
>>
>> Another (not recommended) work-around is to disable SIP.
>>
>> Cheers,
>> Simon
>>
>>
>>
>>> On 3/05/2020, at 10:42 AM, Vincent Carey <stvjc using channing.harvard.edu> 
>>> wrote:
>>>
>>> I'd like to make use of material in
>>>
>>> https://kevinushey.github.io/blog/2015/04/13/debugging-with-lldb/
>>>
>>> But with R 4.0 I get
>>>
>>> %vjcair> R -d lldb
>>>
>>> (lldb) target create 
>>> "/Library/Frameworks/R.framework/Resources/bin/exec/R"
>>>
>>> Current executable set to
>>> '/Library/Frameworks/R.framework/Resources/bin/exec/R' (x86_64).
>>>
>>> (lldb) run
>>>
>>> error: process exited with status -1 (Error 1)
>>>
>>> (lldb) quit
>>>
>>> %vjcair> which lldb
>>>
>>> /usr/bin/lldb
>>>
>>> %vjcair> lldb --version
>>>
>>> lldb-1100.0.30.12
>>>
>>> Apple Swift version 5.1.3 (swiftlang-1100.0.282.1 clang-1100.0.33.15)
>>>
>>>
>>> with gdb, there is a little more info -- and a peculiar warning that
>>> mentions /Volumes/Builds/Simon/R4/h ...
>>>
>>>
>>> %vjcair> R -d gdb
>>>
>>> GNU gdb (GDB) 8.1
>>>
>>> Copyright (C) 2018 Free Software Foundation, Inc.
>>>
>>> License GPLv3+: GNU GPL version 3 or later 
>>> <http://gnu.org/licenses/gpl.html
>>>>
>>>
>>> This is free software: you are free to change and redistribute it.
>>>
>>> There is NO WARRANTY, to the extent permitted by law.  Type "show 
>>> copying"
>>>
>>> and "show warranty" for details.
>>>
>>> This GDB was configured as "x86_64-apple-darwin16.7.0".
>>>
>>> Type "show configuration" for configuration details.
>>>
>>> For bug reporting instructions, please see:
>>>
>>> <http://www.gnu.org/software/gdb/bugs/>.
>>>
>>> Find the GDB manual and other documentation resources online at:
>>>
>>> <http://www.gnu.org/software/gdb/documentation/>.
>>>
>>> For help, type "help".
>>>
>>> Type "apropos word" to search for commands related to "word"...
>>>
>>> Reading symbols from 
>>> /Library/Frameworks/R.framework/Resources/bin/exec/R...
>>>
>>> warning:
>>> `/Volumes/Builds/Simon/R4/high-sierra-x86_64/R-4.0-branch/src/main/Rmain.o': 
>>>
>>> can't open to read symbols: No such file or directory.
>>>
>>> (no debugging symbols found)...done.
>>>
>>> (gdb) run
>>>
>>> Starting program:
>>> /Library/Frameworks/R.framework/Versions/4.0/Resources/bin/exec/R
>>>
>>> Unable to find Mach task port for process-id 59032: (os/kern) failure 
>>> (0x5).
>>>
>>> (please check gdb is codesigned - see taskgated(8))
>>>
>>>> sessionInfo()
>>>
>>> R version 4.0.0 Patched (2020-04-27 r78309)
>>>
>>> Platform: x86_64-apple-darwin17.0 (64-bit)
>>>
>>> Running under: macOS Mojave 10.14.6
>>>
>>>
>>> Matrix products: default
>>>
>>> BLAS:
>>> /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRblas.dylib 
>>>
>>>
>>> LAPACK:
>>> /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRlapack.dylib 
>>>
>>>
>>> -- 
>>> The information in this e-mail is intended only for t...{{dropped:8}}
> 
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-- 
Brian D. Ripley,                  ripley using stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford