Moxa UC-8410A-T-LX [67/86] Bcross compiling applications and libraries

UC-8410A Series Linux Software Programmer’s Guide

6-5

Obtaining Help

You can use the Linux man utility to get help on many of the utilities provided by the tool chain located at

/usr/local/arm-linux-gnueabihf-4.7-20130415/share/doc/gcc-linaro-arm-linux-gnueabihf/man/. For example,

to get help on the arm-linux-gnueabihf-gcc compiler, issue the command:

moxa@Moxa:~$ man

/usr/local/arm-linux-gnueabihf-4.7-20130415/share/doc/gcc-linaro-arm-linux-gnueab

ihf/man/man1/arm-linux-gnueabihf-gcc.1

Cross Compiling Applications and Libraries

To compile a simple C application, use the cross compiler instead of the regular compiler:

#arm-linux-gnueabihf-gcc –o example –Wall –g –O2 example.c

#arm-linux-gnueabihf-strip –s example

#arm-linux-gnueabihf-gcc -ggdb –o example-debug example.c

Test Program—Developing Hello.c

In this section, we use the standard “Hello” programming example to illustrate how to develop a program for

the UC-8410A-LX.

#include <stdio.h>

int main()

{

printf("Hello World\n");

return 0;

}

The following compiler tools are provided:

ar Manage archives (static libraries)

as Assembler

c++, g++ C++ compiler

cpp C preprocessor

gcc C compiler

gdb Debugger

ld Linker

nm Lists symbols from object files

objcopy Copies and translates object files

objdump Displays information about object files

ranlib Generates indexes to archives (static libraries)

readelf Displays information about ELF files

size Lists object file section sizes

strings Prints strings of printable characters from files (usually object files)

strip Removes symbols and sections from object files (usually debugging information)

Compiling Hello.c with Native Compilation

Follow these steps for native compilation.

apt-get install build-essential

sudo gcc –o hello-release hello.c

sudo strip –s hello-release