What is the difference between a .so and a .lo file?

Question

我知道.so文件是一个类似于windows中的.dll文件的共享库文件，但是.lo文件怎么样？

Answer 1

.o  object         (contains compiled code)
.lo library object (contains information for building a .so with `libtool`)
.so shared object  (indeed compareable to a DLL)
.ko kernel object  (usually kernel modules)

See http://www.delorie.com/gnu/docs/libtool/libtool_8.html