2014-07-10 17:58 GMT+02:00 Annick Fron <i...@afceurope.com>: > Hi, > > I have made simple trials using the StandardLib. > I get this error : > RBParser does not understand externalFunctionDeclaration. > I might be missing something … >
Yes, you are missing a package named "AST FFI Pharo 3 compatibility". externalFunctionDeclaration is implemented in RBExplicitVariableParser (subclass of RBParser) as a method extension of this package. The simplest solution is when you open a fresh pharo 3 image, you open the configuration browser (world menu >> tools >> configuration browser) then you click on FFI then install stable version. It loads automatically all what's needed to have FFI working. > > Annick > > Le 9 juil. 2014 à 17:20, Esteban Lorenzano <esteba...@gmail.com> a écrit : > > yes, FFI does not handle ** arguments. > I always replace it by ulong instead (it is the same, after all) > > Esteban > > On 09 Jul 2014, at 17:17, Clément Bera <bera.clem...@gmail.com> wrote: > > Hello, > > This bug happen both with the old and new compiler. > > The error tells you that the number of arguments of your smalltalk method > does not match the number of argument of the C method you want to call (but > it seemsthe number of arguments is correct). > > This works fine: > > <apicall: int 'gst_init_check' (int char* int) module: ' > libgstreamer1.0-0.so'> > ^self externalCallFailed > > This works fine too: > > <apicall: int 'gst_init_check' (int* char* int*) module: ' > libgstreamer1.0-0.so'> > ^self externalCallFailed > > So it seems the bug comes from the parser missparsing ** . I am not > familiar with C enough to help, I don't know what means ** (Is it a pointer > pointing to a pointer pointing to the actual data ?). > > Perhaps someone who knows how to use FFI can give a better answer. > > Esteban ? Guille ? > > > 2014-07-09 16:39 GMT+02:00 Annick Fron <i...@afceurope.com>: > >> Hi, >> I am trying to use FFI on linux with pharo 3 using version 31 of FFI. >> I have written the following method : >> <apicall: int 'gst_init_check' (int* char** int*) module: ' >> libgstreamer1.0-0.so'> >> >> ^self externalCallFailed >> >> ==== >> >> but when accepting it I get a syntax error « matching number of >> arguments » >> Annick Fron >> > > > >
