In the case of distributed computing, a program is build (into a binary) and distributed on multiple computers for running. It is often that we do not want to install libraries depended by our program on every working computers. Instead, we can instruct GCC to link static libraries by setting the environment variable:
I have tried this method under Cygwin and Ubuntu Linux. However, if I do this under Darwin (Mac OS X 10.6 Snow Leopard), the linker complains that
ld: library not found for -lcrt0.o
In this Technical Q&A, Apple explains that they want to make Mac OS X upgrading easier, so they do not provide crt0.o to encourage dynamic linking.