如何安装gcc交叉编译器

| 尝试在Linux下安装交叉编译器时遇到困难。我下载了似乎还可以的工具链，但下一步是什么？我需要在控制台中键入什么命令才能进行安装？目的是将C代码转换为MIPS（小尾数）代码。实际上我只需要2个代码一次，因此，如果有人只能在MIPS中向我显示这些代码，我会非常高兴... 第一个代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define SIZE 128

int main ()

{
    char mychar , string [SIZE];
    int i;
    int count =0 ;  

    printf (\"Please enter your string: \\n\\n\");
    fgets (string, SIZE, stdin);

    printf (\"Please enter char to find: \");
    mychar = getchar();

    for (i=0 ; string[i] != \'\\0\' ; i++ )
        if ( string[i]  == mychar )
            count++;

    printf (\"The char %c appears %d times\\n\" ,mychar ,count);


    return 0;
}

第二个代码：

#include <stdio.h>
#include <string.h>

void SIFT(int x_arr[ ], int y_arr[]);

int main ()
{
    int x[20] = {0} , y[20] = {0};
    int m=0,temp=0,curr=0,i=0,j=0;

    printf(\"Please enter your numbers now:\\n\\n\");

    /*enter numbers one by one. if x[i+1] value < x[i] value, err msg.
      when user want to end the series he must enter \'0\' which means end of string (it wont       included in x[]) */
    while ( (scanf(\"%d\",&temp) ) != 5 )
    {
        if (temp >= curr)
        {
            x[i] = temp;
            curr = temp;
            i++;
        }
        else
        {
            printf(\"The numbers are not at the right order !\\n\\nProgram will now terminate...\\n\\n\");
        }
    }

    SIFT(x,y);

    for (i=0 ; y[i]==\'0\' ; i++) /*strlen(y) without (\'0\')\'s includes*/
        m++;

    /*Prints  m , y\'s organs*/
    printf(\"\\n\\nm = %d\",m);
    printf(\"Y = \");
    while (y[j]!=\'0\')
    {
        printf (\"%d ,\",y[j]);
        j++;
    }

return 0;
}

void SIFT(int x_arr[ ], int y_arr[])
{
    int i=0,j=0;

    while (x_arr[i] != \'0\')
    {
        if (x_arr[i] == x_arr[i+1]) /*if current val. equals next val. -> jump dbl at x_arr*/
        {
            y_arr[j] = x_arr[i];
            i+=2;
            j++;
        }
        else
        {
            y_arr[j]=x_arr[i];
            i++;
            j++;
        }
    }    

}