#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

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

#include <dwarf.h>
#include <libelf.h>
#include <libdwarf.h>

int main(int argc, char **argv)
{
    if (argc != 2) {
        fprintf(stderr, "usage: %s <elf file>\n", argv[0]);
        exit(1);
    }

    if (elf_version(EV_CURRENT) == EV_NONE) {
        fprintf(stderr, "libelf incompatible");
        exit(1);
    }

    int fd = open(argv[1], O_RDONLY);
    if (fd < 0) {
        perror("open failed");
        exit(1);
    }

    Elf *elf = elf_begin(fd, ELF_C_READ, NULL);
    if (elf == NULL) {
        fprintf(stderr, "elf_begin failed: filename=%s elf_errno=%s",
              argv[1], elf_errmsg(elf_errno()));
        exit(1);
    }

    Dwarf_Debug dwarf;
    Dwarf_Error derr;
    dwarf_elf_init(elf, DW_DLC_READ, NULL, NULL, &dwarf, &derr);
}