Jl_init() causing segmentation fault

@AndresGomez97 wrote:

Hi, I am new in Julia and I am trying to run the following code that embeds julia into c.

#include <stdio.h>
#include <stdlib.h>
#include <dlfcn.h>
#include <julia.h>

int main(){
  void *handle;
  void (*jl_init_with_image)(const char*, const char*);
  int (*jl_atexit_hook)(int);
  void (*jl_eval_string)(const char*);
  handle = dlopen("$JULIA_DIR/usr/lib/libjulia.so", RTLD_LAZY | RTLD_GLOBAL);
  if (!handle) {
      fprintf(stderr, "%s\n", dlerror());
      exit(EXIT_FAILURE);
  }

  *(void**)(&jl_init_with_image) = dlsym(handle, "jl_init_with_image");
  *(int**)(&jl_atexit_hook)= dlsym(handle, "jl_atexit_hook");
  *(void**)(&hl_eval_string) = dlsym(handle, "jl_eval_string");

  dlerror();

  jl_init_with_image("$JULIA_DIR/usr/bin","$JULIA_DIR/usr/lib/julia/sys.ji");
  jl_eval_string("print('foo')");
  jl_atexit_hook(0);

  return 0;
}

As you can see I am trying to embed it using dlopen to link libjulia shared object instead of doing it with gcc -L option because as I need to make it work with ROOT this is necessary (ROOT and Julia don’t like each other because of LLVM). When I run this program Segmentation fault occurs.

I am using Julia 1.3.0 from git and running this in amd64_linux26 system.

Also using “gcc -Wall file.c -ldl -I’$JULIA_DIR/usr/include/julia’ -o file -JULIA_NUMBER_THREADS=1 -fPIC” for compiling it.

I’ve tried to use jl_init() but it also causes segmentation fault.

Maybe I am not understanding the parameters I need to pass to jl_init() or jl_init_with_image(), but in both cases I am getting a segmentation fault and I don’t know why so some help would be great.

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