Create a single .o file [duplicate]

Question

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Howto compile a static library in linux

I'm trying to compile a library that will be used further.

For each cpp file, of this library, is generating a .o file. How can I make the same compilation with only one .o file?

@Victor ar rcs some.a 1.o 2.o ..., see stackoverflow.com/q/2734719/726361 (I assume it's a static library) — Seth Carnegie
– Seth Carnegie, Commented Jan 7, 2013 at 18:38

Robᵩ · Accepted Answer · 2013-01-07 19:07:38Z

2

You can not build a single .o file from multiple C++ source files. Compilers just can't handle that.

If the library comes with a proper build infrastructure (like Makefiles), that should make a libXXX.a or libXXX.so file that you can reference from your own project.

If the library does not create a lib-file by itself, you can create one with

ar -r libXXX.a <list of .o files>

edited Jan 7, 2013 at 19:07

Robᵩ

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answered Jan 7, 2013 at 18:39

Bart van Ingen Schenau

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1 Comment

Robᵩ Over a year ago

"You can not build a single .o file from multiple C++ source files." -- Actually, he can, he just doesn't want to. As you correctly observe, he wants to build a .a library.

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