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<destrius>
is there any way to concatenate two BatPrint format strings?
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<orbitz>
^^ ?
<orbitz>
^^ is for regular format strings
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<destrius>
orbitz: yeah it doesn't work on BatPrint ones. anyway i managed to cobble out a solution using kfprintf
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<testcocoon>
is there an IRC channel for opam?
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<Kakadu>
testcocoon: I think it is not needed
<testcocoon>
you mean it would be empty?
<Kakadu>
I think it become mainstream soon
<cago>
No there is not, but you can ask your question here :)
<testcocoon>
ok, I want to create apackage for LLVM. I have 3 url to fetch (llvm, clang compiler-rf). But the url file seams only acception one url. Is this tru?
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<testcocoon>
my second question: is there a way to specify generation option (with or without doxygen generated doc, LLVM version,...)?
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<testcocoon>
Kakadu: mainsteam -> will it bethen hosted by the inria?
<Kakadu>
testcocoon: `It will be used by almost every OCamler`
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<mehdid>
why not assuming the clang compiler is already installed? (or did I misunderstood what you said?)
<testcocoon>
Kakadu: even on Windows?
<Kakadu>
testcocoon: Windows? We should postpone this question until opam will be compilable on Windows
<testcocoon>
mehdid: this is abad idea: if you want to use LLVM tools you should have all related tools build for this version. In other words if you install LLVM 3.1, you want to have all tols which works with this version
<cago>
URL file can contain only one URL
<testcocoon>
mehdid: it is the same as: why installing ocamlc? could opem not use the version provided by the OS?
<flux>
kakadu, I tried to compile it yesterday: File "parser.mli", line 68, characters 26-68: Error: Unbound module Core.Core_set.Make(MethKey).Elt
<testcocoon>
cago: it is then problematic, because the compiler-rt needs to be inpacked into the llvm source tree.
<flux>
kakadu, I have core version
<thomasga>
what's the question about opam?
<flux>
107.01
<testcocoon>
cago: is there an other project which use more than one URL?
<thomasga>
(seems that I've been disconnected)
<testcocoon>
thomasga: I want to create apackage for LLVM. I have 3 url to fetch (llvm, clang compiler-rf). But the url file seams only acception one url. Is this true?
<thomasga>
what's the semantics of the field if you have multiple url ?
<thomasga>
the current semantics is: download the file, and unpack it in the ~/.opam/$switch/build/$package directory
<Kakadu>
flux: I have 108.00.01 but Martin Demello have recently patched it to be buildable with latest 108.07.*
<thomasga>
testcocoon: why don't you create 3 packages ?
<testcocoon>
thomasga: because clang and compiler-rt needs to be unpack in the llvm source tree
<thomasga>
they don't distribute a global archive ?
<testcocoon>
no
<testcocoon>
also if you use directly SVN
<flux>
kakadu, I guess I need to not use debian core then
<Kakadu>
flux: maybe, I have compiled it by hands
<testcocoon>
thomasga: BTW, the script works with opam, the problem is to create a pckage from it.
<Kakadu>
btw
<Kakadu>
flux: what OCaml do you have?
<thomasga>
testcocoon: that's quite unusual
<mehdid>
flux: new maintainers are (needed) welcome
<thomasga>
so the current answer is: opam supports only 1 url
<flux>
kakadu, 3.12.1
<testcocoon>
thomasga: I guess one solution would be to create an own tar package
<Kakadu>
flux: it's OK
<thomasga>
testcocoon: yes, that sounds sensible. 1 big archive containing the contents of the 3 others
<Kakadu>
So, It seems opam doesn't support user sh-scripts for building?
<thomasga>
?
<thomasga>
you can do "sh <your script>"
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<testcocoon>
thomasga: I prefert to avoid this if possible
<Kakadu>
It it is true then multiple-url-problem has work-around with creatign user script
<Kakadu>
which will do additional checkout from svn while configuring
<Kakadu>
s/It/If/
<testcocoon>
Kakadu: yes but for downloading an URL I need an installed tool. wget or curl. And as far I know wget is per default not installed on macos. On cygwin? I don't know
<thomasga>
Kakadu: it would be better if the user script won't download external dependencies
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<Kakadu>
thomasga: yeah, that's why I used `work-around` word
<Kakadu>
testcocoon: AFAIR `wget or curl` is build dependence for opam
<thomasga>
but I still don't get why you can't create 3 packages
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<testcocoon>
thomasga: line 32-34 of http://pastebin.com/PrqzbXdA -> all mackages to unpack are in fixed subdirectories of the llvm tree.
<thomasga>
testcocoon: you can install clang and compiler-rt sources
<thomasga>
as separate packages
<thomasga>
they will be installed in ~/.opam/$switch/lib/$package
<testcocoon>
thomasga: not according the bulding howto of LLVM
<thomasga>
and then symlink them when you are building llvm
<testcocoon>
thomasga: yes but symlinks are not worlink on windows?
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<adrien_oww>
they do but they're unusable in practice
<adrien_oww>
issue 1: they can only be created by admins
<thomasga>
opam is not working on windows currently anyway
<adrien_oww>
this means at least the "do you want to grant admin rights to this application" popup at startup
<Kakadu>
testcocoon: AFAIR symlinks work under cygwin. Without it on NTFS filesystems there are hard links
<adrien_oww>
and then they don't behave the same
<testcocoon>
copying the directory is also possible instead of creating a link?
<testcocoon>
Other question: is it possible to let the user choosing some build options (ex: LLVM version)?
<testcocoon>
(I don't want one package per LLVM version)
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<thomasga>
testcocoon: yes you can copy the directory if you want
<thomasga>
and the url will depend on the LLVM version, so I don't see what you want to do there
<thomasga>
btw, what's your final goal there?
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<testcocoon>
thomasga: the final goal if the provide the ocaml LLVM API and clang associated to this version.
<thomasga>
but I guess LLVM has already some other means of distribution
<testcocoon>
thomasga: LLVM provide some build options: with/without assertions, with/without doxygen outout,...
<testcocoon>
thomasga: not with ocaml API. the build of it is deactivated per default.
<thomasga>
ha I see, you want to get the OCaml API to LLVM
<testcocoon>
thomasga: yes and then the related tools (clang, llvm-dis, ...)
<testcocoon>
thomasga: actually I have it with my script, but I want also provide it to other
<thomasga>
an other option is to patch the llvm Makefile
<thomasga>
to look into ../../lib/clang-src and ../../lib/compiler-rt instead of the other paths
<thomasga>
but that's maybe over complicated
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<testcocoon>
thomasga: copying seams to be easier to maintain
<thomasga>
yup
<testcocoon>
thomasga: but is is possble to define build options that the user can choose before installing a package?
<thomasga>
yes it is: %{foo}% means looking at the contents of the environment variable foo
<testcocoon>
I had the suprise that the output was empty ;)
<thomasga>
well yes, I need to improve the output of list-vars :-)
<Yoric>
Quick spam: next week, in Lille, France, the FOSSa conference will feature some OCaml.
<thomasga>
the variables in conf-ocaml.config are the one available by default in %{…}%
<testcocoon>
thomasga: ok, how does the user set a variable?
<thomasga>
he can overwrites in on the shell
<thomasga>
%{…}% will look in the shell environment first
<thomasga>
if it is not there, it will look in conf-ocaml.config
<thomasga>
(and if it starts by package:, it will look in package.config)
<testcocoon>
environment variable = bash environment variable , not only opam internal environment variable
<thomasga>
yes, bash environment variable
<testcocoon>
now I understand.
<testcocoon>
thanks I guess I have now enough info
<thomasga>
I need to write these thing somewhere
<thomasga>
things
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<testcocoon>
thomasga: BTW, I guess you will certainly spamm you for some package requests: oqamldebug is near to be releasable, facile needs a pacht for ocaml 4.0.1, otags should receive a fix for oacml 4.0, ....
<testcocoon>
thomasga: I had already tested the procedure with otags ;)
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<stj>
hi, I tried using Array.create (1 lsl 20) 0L and it is extremelly slow in comparison to basic int array -- is it because Int64 is boxed? Is there a way to get performance similar to "long long" with GCC?
<stj>
the difference in speed between int and int64 is just way too big for me
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<adrien_oww>
if you're wondering about that, you can check the GC stats
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<stj>
adrien_oww: yes, seems so
<stj>
is it possible to have Int64 unboxed?
<stj>
I see there are libraries like Int63 but I'm astonished that there is nothing in standard library
<adrien_oww>
no
<flux>
stj, in ocaml, all objects fit into one machine word. an object is either completely inside that word, or the word is a pointer to where the object actually is.
<adrien_oww>
bigarray maybe?
* adrien_oww
afk
<flux>
stj, and one bit is used to indicate which one it is
<flux>
so from there it follows unboxed Int64 is impossible in ocaml :)
<flux>
hmm, I wonder if GADTs could be used to keep GC informed about such things..
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<thelema>
flux: no, GADTs can't change the GC behavior - it'd require major changes to the GC to have unboxed int64
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<Qrntz>
I think I'm not getting something. if there is an OCaml string «value» that is stored on the C side of my program, never mutated and needs to persist through the run time, is caml_register_generational_global_root() enough to stop the GC from messing around with it?
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<Qrntz>
if that helps, I'm storing «value»s as values (excuse the tautology) of a QHash and I get rubbish a few OCaml allocations later
<thelema>
Qrntz: no, the gc can move around even roots
<Qrntz>
grrh
<Qrntz>
any way to work around that?
<thelema>
Ancient - move it outside the ocaml heap
<Qrntz>
I'll try that, thanks
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