Poly/ML

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695 discussions

Is the list still up and running?
by rda＠lemma-one.com 03 Sep '24

03 Sep '24

Dear All, As the subject line says, is the Poly/ML list still up and running? The website for the list is still there at https://lists.inf.ed.ac.uk/mailman/listinfo/polyml, but the link to the archives at https://lists.inf.ed.ac.uk/pipermail/polyml/ is is broken. Cheers, Rob.

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PolyML 5.9.1 build failure on Mac Sonoma arm64
by steve.arons＠gmail.com 23 Feb '24

23 Feb '24

The linker fails when writing the object code: ******Writing object code****** /bin/sh ./libtool --tag=CC --mode=link gcc -O3 -o poly polyexport.o libpolymain/libpolymain.la libpolyml/libpolyml.la -lstdc++ libtool: link: gcc -O3 -o .libs/poly polyexport.o libpolymain/.libs/libpolymain.a libpolyml/.libs/libpolyml.dylib -lstdc++ ld: LINKEDIT overlap of start of LINKEDIT and symbol table in '/Users/susanbeningson/poly/polyml/polyexport.o' in '/Users/susanbeningson/poly/polyml/polyexport.o' clang: error: linker command failed with exit code 1 (use -v to see invocation) make[2]: *** [poly] Error 1 make[1]: *** [all-recursive] Error 1 make: *** [all] Error 2 This is clang from the Apple dev tools masquerading as gcc; is it necessary to use GNU gcc and the GNU bin tools? Thanks, Steve

2 4

Poly/ML 5.9.1
by andrewgoh95＠yahoo.com.sg 22 Jan '24

22 Jan '24

Hi Poly/ML List members, I am starting to pick up the Poly/ML language by relying on SML/NJ resources. Do you have any free pdf tutorials that you can recommend and that I can obtain.? As the latest Poly/ML 5.9.1 version is not available for Windows, I however managed to obtain a previous version 5.5.0 from source forge.? I was wondering if Poly/ML can be improved until it looks like, feels like and works like a copy of the Python IDLE IDE. Thanks and Regards, --- Andrew Goh

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How to build a new backend?
by andrei.formiga＠gmail.com 24 Nov '23

24 Nov '23

Hello, Let's say I want to create a new backend for Poly/ML, generating code for a virtual machine, for example the Erlang BEAM Virtual Machine. The backend would not depend on the C++ runtime, because the runtime would be the virtual machine. >From looking at the source code, the backend should generate target code from the CodeTree. I could add a new directory to MLCompiler/CodeTree with the new backend code, and add a GCode.beam.ML file to the MLCompiler directory that instantiates the GCode structure correctly. My question is about building the compiler with the new backend enabled. How would I add the new backend to the build and then build the compiler with this backend enabled? I have limited experience with autoconf and automake (mainly as a user), so taking a look at configure.ac and Makefile.am didn't give me clues on how to tie everything together. I also see that there is a RootXX.ML file for each target architecture that compiles the source files in order, but a comment in these files say they were generated from the make files. So any tips or pointers are appreciated. -- []s, Andrei Formiga

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Looking for a Poly/ML 4.1.3 driver for sparc
by Bernard.Berthomieu＠laas.fr 01 Jul '23

01 Jul '23

Hello, I'd like to revive an old application compiled by Poly/ML 4.1.3 on a sparc workstation, to be run in a (to be built) qemu sparc-solaris VM. I found the database of the application, but I cannot find the corresponding poly 4.1.3 sparc driver. So, before going forward, I would be very grateful if one of you kept such a driver and could send me a copy. Best Regards, ? Bernard.

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Forwarded message from David MacQueen
by David.Matthews＠prolingua.co.uk 26 Apr '23

26 Apr '23

I have created a new organization on the chat system Zulip.com. This Zulip organization now has ?streams? (or chat channels) for ?Standard ML?, ?SML/NJ?, ?MLton?, and ?general?, and Topics can be created under these streams. I would welcome a new stream for discussion of Poly/ML, and encourage people on the polymer mailing list to join the Zulip organization using the following invitation link: https://standardml.zulipchat.com/join/7zpttltlmvicuv6ite6ogbdl/ The URL for the organization is standardml.zulipchat.com. David MacQueen dmacqueen at mac.com P.S. There is also a ?Standard ML? server on Discord, but I am leaning strongly toward Zulip for future support of the Standard ML community. P.S. The new home of SML/NJ is https://github.com/smlnj. The source repositories, Issues (e.g. bug reports), Wiki, and Discussions are there, but the smlnj.org web site is still hosted at the University of Chicago.

1 0

Callback from a foreign thread
by phil.clayton＠veonix.com 14 Nov '22

14 Nov '22

I am wondering whether it is possible for a new thread to be created in foreign code by some other library and for the new thread to call back into ML.? As the new thread would not be created by Poly/ML, presumably it would not have its own ML stack and that sounds problematic, given the description in the original paper [1].? On the other hand, perhaps an ML stack is provided by the callback closure.? I briefly looked at the source code, and ended up at buildCallBack in X86ForeignCall.ML, but I would need to understand the code generation to make sense of that. Phil 1.Efficient Parallel Programming in Poly/ML and Isabelle/ML ... Like every thread that runs ML code this new thread has both an operating-system stack that it uses when running in the RTS or in ?foreign? code through the foreign-function interface (FFI) and an ML stack that is used when running ML code. The ML stack is an object within the ML heap and can be scanned and updated by the garbage-collector. ... Because all threads are created by calls to the RTS and all interaction with the operating system is through it the RTS is able to maintain a table of threads and their current state. Knowing the state of all threads is particularly important for garbage collection. ...

2 2

hitherto unobserved error while building HOL on ARM Mac
by michael.norrish＠anu.edu.au 18 Jul '22

18 Jul '22

I see signal 11 (seg fault) periodically, but I just also saw > Assertion failed: (space->partialGCScan+length+1 <= space->lowerAllocPtr), function ScanOwnedAreas, file quick_gc.cpp, line 499. This is running SHA bafe319b. -- Michael Norrish School of Computing, Australian National University Canberra, AUSTRALIA E: michael.norrish at anu.edu.au W: cecs.anu.edu.au/people/michael-norrish

1 0

Update to ARM code-generator
by David.Matthews＠prolingua.co.uk 25 Jan '22

25 Jan '22

The long-promised update to the ARM code-generator is now in Git master. This builds on the old version by adding the register allocation strategy borrowed from the X86 version as well as low-level peephole optimisation. On my Apple M1 processor it now seems to be faster than X86 code with Rosetta. There are still some improvements to be made, particularly with floating point, but no major changes are anticipated. It includes one optimisation that isn't present on the X86 at the moment: small tuples are returned in registers rather than on the stack. Please try it and let me know how it goes. David

3 3

Poly/ML package in Debian and Ubuntu
by David.Matthews＠prolingua.co.uk 17 Jan '22

17 Jan '22

Does anyone know anything about the polyml package in Debian and Ubuntu? It seems that the currently packaged version is still 5.7.1. I've seen a couple of bug reports that have turned out to be issues that have long since been fixed. I'm quite happy to have Poly/ML packaged for distributions but if they get out of date then they become a problem. David

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