Simple use of embedded Linux crossover tool chain

Cross tool chain

For a simple hello.c program

#include <stdio.h>

void Main ()

{

printf ("Hello World->\n");

}

We use GCC at Linux compile time

GCC hello.c-o Hello (-o rename), but after compiling the copy to arm inside cannot use, we need special compiler to compile, we will write good program hello.c in Linux not using GCC compile, use ARM-GCC to compile

ARM-LINUX-GCC Hello.c-o Hello

Then copy it into arm and run it.

./hello on the line, output Hello world->

In the embedded development host is compiled, linked to the embedded software of the computer, the target machine is the implementation of embedded software hardware platform

Common Cross Tools

ARM-LINUX-GCC (Cross compiler)

ARM-LINUX-LD (cross-linker)

Arm-linux-readelf

Arm-linux-objdump (Disassembler)

Arm-linux-objcopy (file Format Converter)

Simple way to use:

The GCC compiler in Linux finds the header file in/usr/include/dtdio.h

And ARM-LINUX-GCC compiled we can see through help

ARM-LINUX-GCC (cross compiler) The resulting file format is Elf's

ARM-LINUX-GCC using the same method as GCC

ARM-LINUX-GCC-G (Display debug information)-O (rename)

ARM-LINUX-LD (cross-linker)

ARM-LINUX-LD-TLED.LDF (linker script)-O led.elf (the name specified after the link is the best plus. Elf linked file format is elf) LED.O (linked. o file)

Arm-linux-readelf (Crossover Converter)

Arm-linux-readelf-a (that is, all) led.elf (see the size and end of the program used, platform, etc.)

Arm-linux-objdump-d-S Hello (compiled assembly code) when used in conjunction with ARM-LINUX-GCC ARM-LINUX-GCC best plus-a parameter to facilitate the compilation can and C language to correspond, see understand, (when looking at the main function)

Arm-linux-objcopy (file Format Converter) to replace Elf with binary file

Arm-linux-objcopy-o (output format) binary led.elf (source file) led.bin (binary file)

Simple solution for compile-time errors

View the platforms used by the compiled application using tools (GCC,ARM-LINUX-GCC, etc.) we can use the command file+ the compiled program

For example, file Hello

View the size end using commands such as arm-linux-readelf-a (that is, all) led.elf

View library files that your application must use arm-linux-readelf-d Hello

This article is from the "Cocoa Linux" blog, please be sure to keep this source http://kekelinux.blog.51cto.com/9651825/1603995

Simple use of embedded Linux crossover tool chain