Are object files platform independent?

Question

Is it possible to compile program on one platform and link with other ? What does object file contain ? Can we delink an executable to produce object file ?

Answer 1

They are platform dependent. For example file-command prints out following:

$ file foo.o
foo.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped