I add a library, if i don't call any function of a library , the library can't keep in destion execution file.
Have some setting can keep the library.
Library file (.dlb) will not be getting linked into an executable unless an object within it is being referenced elsewhere in the project. You should be able to establish which object(s) are being linked against and where they are referenced by adding "-xref" to the linker additional options and looking at the generated "xref.xml" file.
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