如何编译使用MacOSX上NASM [英] How to compile using nasm on MacOSX

问题描述

我试图编译和链接汇编我的第一个程序。
我尝试编译以下code：

I am trying to compile and link my first program on Assembler. I try to compile the following code:

; %include "stud_io.inc"    
global _main     

section .text
_main: 
    xor eax, eax
again:
    ; PRINT "Hello"
    ; PUTCHAR 10
    inc eax     
    cmp eax, 5
    jl again

下面的编译和链接程序的控制台命令：

Below the console command for compiling and linking a program:

-bash-3.2$ nasm -f macho main.asm -o main.o  && ld -e _main -macosx_version_min 10.8 -arch x86_64 main.o

但结果是：

ld: warning: ignoring file main.o, file was built for i386 which is not the architecture being linked (x86_64): main.o
Undefined symbols for architecture x86_64:
  "_main", referenced from:
     -u command line option
ld: symbol(s) not found for architecture x86_64

我认为它需要编译的x86_64的文件main.asm中..
如何编译我的系统程序是否正确？

I think its necessary to compile the main.asm file for x86_64.. How to compile programs for my system properly?

推荐答案

我会建议先更新您的 NASM 。

在此之后，尝试运行这样的：

After that, try running this:

nasm -f macho64 main.asm -o main.o  && ld -e _main -macosx_version_min 10.8 -arch x86_64 main.o -lSystem

请注意，新的命令添加上述JasonD的建议（ macho64 ），而且还增加了 -lSystem 来的 LD 命令从抛出以下错误停止LD：

Notice that the new command adds JasonD's suggestion above (macho64), but also adds the -lSystem to the ld command to stop ld from throwing following error:

ld: dynamic main executables must link with libSystem.dylib for architecture x86_64

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