Compiling in 32 Bit gives an error

Question

I'm compiling a program to assembly code, specifically in 32 bit form, and when I compile without the -m32 flag like so...: ``` gcc -S examples.c ``` It compiles fine. However when I do this... ``` gcc -S -m32 examples.c ``` I get an error on my include stdlib.h (formatting taken out because it wasn't showing up in the preview window) line like so: ``` In file included from /usr/include/stdlib.h:25:0, from examples.c:1: /usr/include/features.h:324:26: fatal error: bits/predefs.h: No such file or directory compilation terminated. ``` What's going on here?

Accepted Answer

You're missing the 32bit C libraries and headers. These aren't installed in 64bit Ubuntu by default, but you can do it (together with C++) by running:

```
$ sudo apt-get install g++-multilib
```

Compiling in 32 Bit gives an error

Solution

Problem