libera/#clasp - IRC Chatlog

15:30:33 phantomics Morning Bike, beach

18:36:31 drmeister Hello everyone.

18:37:14 drmeister I'm currently working on speeding up startup. I more or less figured out how to use multiple cores to link at startup.

18:37:41 drmeister Of course what I need isn't supported by llvm13 - but it will be in llvm13.0.1 (sigh).

18:38:01 drmeister So I'm keeping it in a separate branch.

18:38:41 Bike geez louise.

18:38:59 drmeister I'm going to put it aside though for a few days. I need to refactor how we deal with code so that we aren't allocating huge amounts of memory for code.

18:39:29 drmeister Yeah - the API changes from llvm-13 to llvm-13.0.1 are huge. So much churn.

18:40:55 drmeister The parallel JIT doesn't let me store anything in thread-local storage. I have to do everything in global variables.

18:41:45 drmeister I'm going to allocate X MB chunks and put multiple code objects within them.

19:12:29 yitzi How can the API change from 13.0.0 to 13.0.1? Are they not using semantic versioning over there?

19:13:30 Bike i was going to say... i think the jit api is experimental chaos anyway

19:14:03 yitzi Ahhh.

19:14:17 Bike *anyway, though

19:23:00 Bike characterp, nil when i C-c C-c, look at that next me

19:28:13 phantomics If anyone can help I'm having some trouble compiling Clasp, is a specific gcc version required? I'm getting a long list of error messages like /usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/fs_path.h:380: error: undefined reference to 'std::filesystem::__cxx11::path::has_root_directory() const' when building build/boehm/iclasp-boehm

19:28:56 Bike you're not using gcc to build, are you? we use llvm all the way down

19:29:30 phantomics I'm using llvm, have llvm 13, not sure why it's looking in a /usr/lib/gcc folder

19:29:39 yitzi Turtles all the way down!

19:30:10 Bike maybe the includes are coming from the wrong place somehow

19:30:27 yitzi Also, did you set the llvm-config in wscript.config?

19:32:29 drmeister phantomics: Copy the wscript.config.template to wscript.config and edit this line:

19:32:52 drmeister LLVM_CONFIG_BINARY = '/path/to/bin/llvm-config'

19:33:07 drmeister It's the path to the llvm-config executable - it tells clasp where everything llvm/clang are

19:33:28 phantomics Got it, thanks, I tried entering llvm-config in the CLI and it doesn't seem to be present on the system

19:33:42 yitzi Something like this https://plaster.tymoon.eu/view/2735#2735

19:33:47 Bike but you have llvm 13 installed?

19:34:18 drmeister Yeah - they changed a bunch of function calls that impact us. The DIBuilder::createFunction and a few others got an extra argument called "Annotations".

19:34:44 phantomics Yes, have llvm-13 installed, the compilation of Clasp gets to about file 196/205 before it hits the error

19:35:31 yitzi The config maybe named llvm-config-13 and may not be in an obvious bin folder.

19:35:35 phantomics Ok, I do have llvm-command-13 available from the CLI

19:35:37 phantomics Found it

19:35:53 drmeister phantomics: That sounds very weird.

19:36:40 phantomics Got the file updated, trying it again

19:38:21 phantomics Got the same error, I'll put the whole thing in a paste

19:39:13 yitzi What was the path of llvm-config?

19:39:44 yitzi Or what does your wscript.config look like?

19:40:08 phantomics /usr/bin/llvm-config-13

19:40:24 drmeister phantomics: Once you edit wscript.config you need to rerun ./waf distclean configure

19:40:58 drmeister ::notify kpoeck When I run ./waf build_cboehm and then (ROOM) with the product it hangs. Investigating...

19:40:58 Colleen drmeister: Got it. I'll let kpoeck know as soon as possible.

19:41:28 phantomics I'll try that

19:47:08 phantomics Built it all from scratch, ran into same error. I'll make a paste of the output

19:54:30 phantomics Here's my wscript.config and the output: https://dpaste.com/C8D79PBYK

19:55:06 drmeister Oh sh*t! Room can't work properly without boehmprecise.

19:55:29 phantomics Note the part in the output where it says "Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8"

19:55:56 phantomics Not sure why it's doing anything with GCC

19:56:58 drmeister If that's the only problem kpoeck is seeing I'll just have (ROOM) print a message when it's not running in boehmprecise.

19:57:12 drmeister phantomics: Can you paste the output of ./waf configure?

19:57:29 drmeister Your environment is not correct for building clasp.

19:57:48 drmeister How did you install llvm13?

19:57:58 drmeister What distribution of linux are you using?

19:59:29 phantomics I installed llvm13 using the debian repo at http://apt.llvm.org/buster/, I'm running MX Linux 19.1

19:59:55 phantomics Let me get the configure output for you

20:01:38 phantomics Here's the config output: https://dpaste.com/CUS6NZPK7

20:07:03 kpoeck Hello

20:07:03 Colleen kpoeck: drmeister said at 2021.11.24 03:34:18: I wasn't able to reproduce the crash with ROOM on macOS. The regression tests work fine. https://www.irccloud.com/pastebin/dtWL1O6R/

20:07:03 Colleen kpoeck: drmeister said 26 minutes, 5 seconds ago: When I run ./waf build_cboehm and then (ROOM) with the product it hangs. Investigating...

20:10:38 drmeister Hi kpoeck - I see why ROOM is failing with boehm - I can't walk objects in memory unless I have boehmprecise.

20:11:08 drmeister If I have ROOM say something to that effect when you run it under boehm - would that fix the regression tests? Are they all due to ROOM going boom?

20:11:41 drmeister What ROOM generates is "implementation defined"

20:12:00 Bike yeah, printing whatever is fine

20:12:13 Bike though it would probably be better if it could at least give a "this much memory allocated" thing?

20:12:39 drmeister Yes, I can do that - I get some info from the GC - I'll still report that.

20:13:04 drmeister phantomics: What do you get when you type: /usr/lib/llvm-13/bin/clang++ -v

20:13:50 kpoeck I just commented the line with GC_call_with_alloc_lock( walk_garbage_collected_objects_with_alloc_lock, NULL );

20:14:31 phantomics drmeister: here is the output: https://dpaste.com/BHY6GAQFY

20:14:34 drmeister kpoeck: That should do the trick.

20:15:22 drmeister phantomics: So it's not using gcc.