Linux and Free Software
The Linux kernel

The Linux 2.2.14 kernel is made of
530K C statements (1,6M lines of code)
Machine independent: 457K statements
60K lines of machine instructions (76K lines of assembly code)
Between 1,7K (ARM) and 18K (M68K)

In comparison, GNAT 3.13a1 has
161K Ada statements (492K lines of code)
Machine independent: 140K statements
137K C statements (439K lines of code)
Machine independent: 121K statements