Chapter 4. Using Sourcery G++ from the Command Line
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## Chapter 4. Using Sourcery G++ from the Command Line

This chapter demonstrates the use of Sourcery G++ Lite from the command line.

## 4.1. Building an Application

This chapter explains how to build an application with Sourcery G++ Lite using the command line. As elsewhere in this manual, this section assumes that your target system is arm-uclinuxeabi, as indicated by the `arm-uclinuxeabi` command prefix.

Using an editor (such as `notepad` on Microsoft Windows or `vi` on UNIX-like systems), create a file named `main.c` containing the following simple factorial program:

    #include <stdio.h>

    int factorial(int n) {
      if (n == 0)
        return 1;
      return n * factorial (n - 1);
    }

    int main () {
      int i;
      int n;
      for (i = 0; i < 10; ++i) {
        n = factorial (i);
        printf ("factorial(%d) = %d\n", i, n);
      }
      return 0;
    }

Compile and link this program using the command:

    > arm-uclinuxeabi-gcc -o factorial main.c

There should be no output from the compiler. (If you are building a C++ application, instead of a C application, replace `arm-uclinuxeabi-gcc` with `arm-uclinuxeabi-g++`.)

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