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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?
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2You link all the .o files together to make an .a file. – Seth Carnegie Jan 07 '13 at 18:21
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5Why? Sounds like the [XY problem](http://meta.stackexchange.com/q/66377). – Jan 07 '13 at 18:21
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@SethCarnegie how can I do that? – Victor Jan 07 '13 at 18:26
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@Victor `ar rcs some.a 1.o 2.o ...`, see http://stackoverflow.com/q/2734719/726361 (I assume it's a static library) – Seth Carnegie Jan 07 '13 at 18:38
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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>
Robᵩ
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Bart van Ingen Schenau
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"*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. – Robᵩ Jan 07 '13 at 19:03