Why .o file is getting created for every .cpp file

Question

I am new to Linux environment, and I just started using gcc. We have small project that has 7 to 8 cpp files. When I try to compile my files, I wonder why there is .o file for every .cpp file. There is only one main.

score 7 · Answer 1 · answered Jan 09 '13 at 07:46

This is the way compilation works. Each translation unit gets turned into object code ( the .o files) then the object files get linked together and with other libraries into the final executable file. Normally the build system hides object files somewhere, but you're probably using a very simple build system or script which doesn't bother.

score 5 · Answer 2 · edited May 23 '17 at 12:18

5

.o is an object file created during compilation of each cpp.

for more info Why Compile to an Object File First?

edited May 23 '17 at 12:18

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answered Jan 09 '13 at 07:44

Arpit

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Why .o file is getting created for every .cpp file

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