$ sloccount bbbike
[...]
Totals grouped by language (dominant language first):
perl:        123243 (96.22%)
ansic:         2302 (1.80%)
cpp:           1155 (0.90%)
java:          1098 (0.86%)
lisp:           162 (0.13%)
sh:             126 (0.10%)




Total Physical Source Lines of Code (SLOC)                = 128,086
Development Effort Estimate, Person-Years (Person-Months) = 32.65 (391.82)
 (Basic COCOMO model, Person-Months = 2.4 * (KSLOC**1.05))
Schedule Estimate, Years (Months)                         = 2.01 (24.17)
 (Basic COCOMO model, Months = 2.5 * (person-months**0.38))
Estimated Average Number of Developers (Effort/Schedule)  = 16.21
Total Estimated Cost to Develop                           = $ 4,410,810
 (average salary = $56,286/year, overhead = 2.40).