How to force nasm to address variables position-independent?

问题

How to tell NASM (or LD) to process labels in a way that will make the segment position-independent?

The segment is going to be moved from one file to another and I want it to work properly on any position in any file.

Here is the code that illustrates my problem:

section .text
...
message: db 'hello world!',0x00
...
mov rax,SYSCALL_WRITE
mov rdi,STDOUT
mov rsi,message
mov rdx,13
syscall

In the orginal executable it prints "Hello world!", but when the segment is moved to another elf, it prints some random bytes.

来源：https://stackoverflow.com/questions/34288482/how-to-force-nasm-to-address-variables-position-independent