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Search found 33 results on 2 pages for 'ffi'.

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• Jruby and ffi: Function 'xmlFirstElementChild' not found in [libexslt.so]

  - by danilo

  On a ubuntu server, with everything installed (checked against another pc where this works just fine) When trying to run warble on one of my jruby projects, I get this error: Function 'xmlFirstElementChild' not found in [libexslt.so] /opt/jruby-1.5.0/lib/ruby/site_ruby/shared/ffi/ffi.rb:112:in `create_invoker'…

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• LuaJit FFI and hiding C implementation details

  - by wirrbel

  I would like to extend an application using LuaJit FFI. Having seen http://luajit.org/ext_ffi_tutorial.html this is surprisingly easy when comparing this to the Lua C API. So far so good. However I do not plainly want to wrap C functions but provide a higher level API to users writing scripts for the…

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• Haskell binding with Ruby through FFI ?

  - by taylor luk

  Since both ruby and Haskell supports FFI, Is it possible to call Haskell code from ruby, may be through FFI ? Is there any Haskell binding in Ruby ?

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• Warning: newtype `CInt' is used in an FFI declaration,

  - by vivian

  When building gtk2hs-buildtools with ghc 7.4.2, I get the following warning: c2hs/toplevel/C2HSConfig.hs:110:1: Warning: newtype `CInt' is used in an FFI declaration, but its constructor is not in scope. This will become an error in GHC 7.6.1. When checking…

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• Compiled Haskell libraries with FFI imports are invalid when imported into GHCI

  - by John Millikin

  I am using GHC 6.12.1, in Ubuntu 10.04 When I try to use the FFI syntax for static storage, only modules running in interpreted mode (ie GHCI) work properly. Compiled modules have invalid pointers, and do not work. I'd like to know whether anybody can reproduce the problem, whether this an…

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• Why do compiled Haskell libraries see invalid static FFI storage?

  - by John Millikin

  I am using GHC 6.12.1, in Ubuntu 10.04 When I try to use the FFI syntax for static storage, only modules running in interpreted mode (ie GHCI) work properly. Compiled modules have invalid pointers, and do not work. I'd like to know whether anybody can reproduce the problem, whether this an…

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• Dynamic libraries are not allowed on iOS but what about this?

  - by tapirath

  I'm currently using LuaJIT and its FFI interface to call C functions from LUA scripts. What FFI does is to look at dynamic libraries' exported symbols and let the developer use it directly form LUA. Kind of like Python ctypes. Obviously using dynamic libraries is not permitted in iOS for…

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• Interchange structured data between Haskell and C

  - by Eonil

  First, I'm a Haskell beginner. I'm planning integrating Haskell into C for realtime game. Haskell does logic, C does rendering. To do this, I have to pass huge complexly structured data (game state) from/to each other for each tick (at least 30 times per second). So the passing data…

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• Compiling C lib and OCaml exe using it, all using ocamlfind

  - by Magnus

  I'm trying to work out how to use ocamlfind to compile a C library and an OCaml executable using that C library. I put together a set of rather silly example files. % cat sillystubs.c #include <stdio.h> #include <caml/mlvalues.h> #include <caml/memory.h> #include…

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• Common lisp, CFFI, and instantiating c structs

  - by andrew

  Hi, I've been on google for about, oh, 3 hours looking for a solution to this "problem." I'm trying to figure out how to instantiate a C structure in lisp using CFFI. I have a struct in c: struct cpVect{cpFloat x,y;} Simple right? I have auto-generated CFFI bindings (swig, I…

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• JRuby and JVM Languages at JavaOne!

  - by Yolande Poirier

  "My goal with my talks at JavaOne is to teach what is happening at the JVM level and below so people understand better where we are going" explains Charles Nutter, Jruby project lead. In this interview, Charles shared the JRuby features he presented at the JVM Language…

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• In PLT scheme, can I export functions after another function has been called?

  - by Jason Baker

  I'm trying to create a binding to libpython using scheme's FFI. To do this, I have to get the location of python, create the ffi-lib, and then create functions from it. So for instance I could do this: (module pyscheme scheme (require foreign) (unsafe!) (define…

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• Unable to Install Guard

  - by Dillmo

  I've seen Guard and it's usefulness in web development and would like to install it. Naturally, I expected to be able to use sudo gem install guard to do so (yes, it is a Ruby Gem). However the installation errors out. Here is what I'm getting: Building native…

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• How to install python without idle?

  - by jasonz

  I'm using Archlinux and I find I don't need Idle when I'm coding Python. Here is the part of default PKGBUILD file: ./configure --prefix=/usr \ --enable-shared \ --with-threads \ --with-computed-gotos \ …

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• Why isn't there a good scheme/lisp on llvm?

  - by anon

  There is Gambit scheme, MIT scheme, PLT scheme, chicken scheme, bigloo, larceny, ...; then there are all the lisps. Yet, there's not (to my knowledge) a single popular scheme/lisp on LLVM, even though LLVM provides lots of nice things like: easier to…

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• Please help to clean up my RoR development environment

  - by PeterWong

  I started RoR development a few months ago, and being new to Mac... Time flies and now I have a lot different ruby versions, rails versions and gems versions located everywhere......And currently I installed rvm and things got even worst, all things…

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• prolog interpreter on linux?

  - by anon

  I've decided to learn prolog. What's a good interpreter to use? Even better if it has a decent c/c++ ffi.

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• RDF-raptor-parser

  - by naveen

  Hi All, I am trying to parse the rdf file but I am getting error while executing following code in ubuntu RDF::Reader.open("http://datagraph.org/jhacker/foaf.rdf") do |reader| reader.each_statement do |statement| puts statement.inspect end end as…

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• Rspec2, Rails3, Authlogic: Can't run specs

  - by Sam

  When I do rspec spec in my rails project, I get No examples were matched. Perhaps {:if=>#<Proc:0x0000010126e998@/Users/samliu/.rvm/gems/ruby-1.9.2-p0@rails3/gems/rspec-core-2.3.1/lib/rspec/core/configuration.rb:50 (lambda)>,…

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• ruby1.9.1 - sqlite3 problem on ubuntu 9.10 x64 (no such file to load -- sqlite3)

  - by doriath

  Hi, I have problem with sqlite3, because it is not working. irb(main):001:0> require 'sqlite3' LoadError: no such file to load -- sqlite3 from (irb):1:in `require' from (irb):1 from /usr/bin/irb:12:in `<main>' I…

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• Error on rake : The platform 'i386-mingw32' is unsupported.

  - by pm8

  I have Ruby 1.9 and rails 2.3.5 installed. After creating a rails app when I run rake db:create, I get i386-mingw32 error. I have both msysgit and cygwin on my windows machine. rake db:create (in C:/mydirectory) ==== UNSUPPORTED…

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• Are there any Python reference counting/garbage collection gotchas when dealing with C code?

  - by Jason Baker

  Just for the sheer heck of it, I've decided to create a Scheme binding to libpython so you can embed Python in Scheme programs. I'm already able to call into Python's C API, but I haven't really thought about memory management. …

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• How do I write a scheme macro that defines a variable and also gets the name of that variable as a s

  - by Jason Baker

  This is mostly a follow-up to this question. I decided to just keep YAGNI in mind and created a global variable (libpython). I set it to #f initially, then set! it when init is called. I added a function that should handle…

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• Haskell Linear Algebra Matrix Library for Arbitrary Element Types

  - by Johannes Weiß

  I'm looking for a Haskell linear algebra library that has the following features: Matrix multiplication Matrix addition Matrix transposition Rank calculation Matrix inversion is a plus and has the following properties: …

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• instantiate python object within a c function called via ctypes

  - by gwk

  My embedded Python 3.3 program segfaults when I instantiate python objects from a c function called by ctypes. After setting up the interpreter, I can successfully instantiate a python Int (as well as a custom c extension…

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