何らかのCプログラムをコンパイルするRakefileが書けるようになった

quicksort.c

#include <stdio.h>

void QuickSort(int x[], int left, int right);
void ShowData(int x[], int count);

int main(void)
{
    int array[10] = {4, 7, 0, 9, 8, 1, 6, 2, 3, 5};  
    int arraySize =  sizeof(array) / sizeof(array[0]);

    QuickSort(array, 0, arraySize-1);
    ShowData(array, arraySize);

    return 0;
}

quicksort_sub.c

void QuickSort(int x[], int left, int right)
{
    int le, ri;
    int midVal;
    int buf;

    le = left;
    ri = right;

    midVal = x[(left + right) / 2];

    while(1)
    {
        while(x[le] < midVal) le++;
        while(x[ri] > midVal) ri--;

        if (le >= ri) break;

        buf = x[le];
        x[le] = x[ri];
        x[ri] = buf;

        le++;
        ri--;
    }

    ShowData(x, right);

    if(left < le-1) QuickSort(x, left, le-1);
    if(ri+1 < right ) QuickSort(x, ri+1, right);
}

Rakefile

CC = "gcc"

task :default => "./quicksort"

desc "Execute quicksort in console"
task "execute_quicksort" => ["quicksort"] do |t|
  sh "./quicksort"
end

desc "Link .o Source files"
file "quicksort" => ["showdata.o", "quicksort_sub.o", "quicksort.o"] do |t|
  sh "#{CC} -o #{t.name} #{t.prerequisites.join(' ')}"
end

desc "Compile .c Source files"
rule '.o' => '.c' do |t|
  sh "#{CC} -c #{t.source}"
end

showdata.c

#include <stdio.h>

void ShowData(int x[], int count)
{
    int i;
	
    for(i = 0; i < count; i++) 
        printf("%d", x[i]);
    printf("\n");
}