export missed symbol#2293
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vitaut
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May 18, 2021
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@vitaut I've updated the error description and marked other missed symbols for export. It might be a good idea to set the visibility to hidden by default because this leaves more room for compiler optimizations. In CMake, the preferred way for generating export macros is to use the GenerateExportHeader module which creates a header with toolchain specific export defines. On a downside, this introduces an additional header. Is this something |
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No, we try to keep the number of headers small and especially avoid any generated headers. |
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There are some build failures. |
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I could reproduce the problem with |
Enable `-fvisibility=hidden` and `-fvisibility-inlines-hidden` by default in CI builds to ensure all public symbols are exported correctly.
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Thank you! |
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When compiling with
-fvisibility=hidden, linker errors occur because a symbol was not marked as being exported. Thefinalkeyword is not necessary for a class that is already marked asfinal.How to reproduce:
CXXFLAGS=-fvisibility=hidden cmake -S . -B build/ -DBUILD_SHARED_LIBS:BOOL=ON -GNinja cmake --build build/Log output