juliac

Examples for Julia's generating small binary executables and libraries feature.

Note that this feature is still under development.

My Initial Blog Post

https://jbytecode.github.io/juliac/

This blog post represents the requirements and command line arguments of the compiler.

The Discourse Entry

https://discourse.julialang.org/t/where-is-juliac-developed/113004?u=jbytecode

This Discourse post the entry point of my journey.

How to use this repo?

• The download.sh script downloads the required scripts from the Julia's GitHub repository. The latest versions of these scripts are already included in this repo. To update them, type

> cd juliac
> ./download.sh
> cd ..

in the OS terminal.

Hello World

> make hello

generates the hello binary using hello.jl.

Please review the Makefile file to build other examples.

Calling Julia Library Function from C

The files mylib.c, mylibcaller.c, and mylib.jl represents calling Julia-generated dynamic library functions from within C. Here is the skeleton:

module MyLibrary

   Base.@ccallable function myfunc(x::Float64)::Float64
	   return x^2
   end 

end 

and here the caller:

#include<stdio.h>

double myfunc(double);

int main(){
	double result = myfunc(5.0);
	printf("Result is %f\n", result);
	return 0;
}

where myfunc is defined in Julia.

> make mylibcaller

compiles Julia and C files together and generates the shared library and the caller executable.