Re: Emacs modules 25.1

[Mambo Levis <mambo.levis@gmail.com>]

Hi,
I found the problem and now I can build the emacs_module example using g++.
That's means that I eventually can create a c++ wrapper, but I would like to listen to your advice because I don't knowif there is a fundamental issue that I'm ignoring. So, only one question is still open?
1. Is it possible to create a C++ wrapper around emacs_modules and what are the implications?


Thanks,
Levis

 

    On Monday, September 26, 2016 8:07 PM, Mambo Levis <mambo.levis@gmail.com> wrote:
 

 Hi,
I tested (in Windows) the example from Aurélien Aptel (http://diobla.info/blog-archive/modules-tut.html) with gcc at it runs as expected.
Now, I would like to create a C++ wrapper, but I not quite sure if it is possible. Questions:
1. Is it possible to create a C++ wrapper around emacs_modules?2. I am trying to build the same example using g++ and the following error appears:
---------------------------------------------------------------------------------------------------------------$ make SO=dllg++ -ggdb3 -ID:\user\emacs-src\emacs-25-branch-src/src -c mymod.cmymod.c: In function 'int emacs_module_init(emacs_runtime*)':mymod.c:55:45: error: invalid conversion from 'emacs_value_tag* (*)(emacs_env*, int, emacs_value_tag**, void*) {aka emacs_value_tag* (*)(emacs_env_25*, int, emacs_value_tag**, void*)}' to 'emacs_value_tag* (*)(emacs_env*, ptrdiff_t, emacs_value_tag**, void*) {aka emacs_value_tag* (*)(emacs_env_25*, long long int, emacs_value_tag**, void*)}' [-fpermissive]                                         NULL);                                             ^Makefile:42: recipe for target 'mymod.o' failedmake: *** [mymod.o] Error 1
---------------------------------------------------------------------------------------------------------------
It corresponds to the following code (I remarked the part associated with the error)
-------------------------------------------------------------------------------------------------------intemacs_module_init (struct emacs_runtime *ert){  emacs_env *env = ert->get_environment (ert);
  /* create a lambda (returns an emacs_value) */  emacs_value fun = env->make_function (env,                                        0,                                        0,                                        Fmymod_test,                                        "doc",                                        NULL);  bind_function (env, "mymod-test", fun);  provide (env, "mymod");
/* loaded successfully */  return 0;}
-----------------------------------------------------------------------------------------------------------
Do you have any Idea or recommendation? 
Thanks,
Levis