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Editorial Team
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Asked: 2026-06-08T12:44:08+00:00

I have a problem with linking a program, the strange thing about that is

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I have a problem with linking a program, the strange thing about that is that functions that linker can’t resolve, sit in the same file near the functions that are resolved without a problem.

I can’t post files themselves in the message as they are pretty large, though ===> here <=== is the project ready to be built.

Here are build errors:

error LNK2019: unresolved external symbol _leveldb_filterpolicy_destroy referenced in function _main
error LNK2019: unresolved external symbol _leveldb_options_set_filter_policy referenced in function _main
error LNK2019: unresolved external symbol _leveldb_filterpolicy_create_bloom referenced in function _main
error LNK2019: unresolved external symbol _leveldb_filterpolicy_create referenced in function _main
error LNK2019: unresolved external symbol _leveldb_filterpolicy_create referenced in function _main

Here is the full-size screenshot showing error messages
enter image description here

Here is the implementation of the function that cant be found:
enter image description here

Here is the implementation of the function that sits in the same file and is easily found by the linker:
enter image description here

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1 Answer

  1. Editorial Team

    I’ve found-out what was causing the problem, I’ve updated the version of leveldb to a newer one. The newer version introduced several new functions (the ones that are being unresolved). But I haven’t updated the .def file which contains all exports, and functions weren’t exported as a result…

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