The "-fvisibility=hidden" (see CMakeLists.txt#L77) in CMakeLists.txt causes undefined symbols errors when using this library as shared object.
It's not a problem when using it as a static library because visibility settings doesn't affect that by design.
There are multiple solutions for this problem:
- Just remove
"-fvisibility=hidden". We are currently using this approach as a workaround because we currently don't have many symbols to be considered private, this may be a viable option.
- Keep
"-fvisibility=hidden" and manually annotate symbols intended to be public with: __attribute__((visibility("default"))), however, this will require a significant amount of effort.
- Replace
"-fvisibility=hidden" with "-fvisibility=default" and manually annotate symbols intended to be private with __attribute__((visibility("hidden")))
The
"-fvisibility=hidden"(see CMakeLists.txt#L77) inCMakeLists.txtcauses undefined symbols errors when using this library as shared object.It's not a problem when using it as a static library because visibility settings doesn't affect that by design.
There are multiple solutions for this problem:
"-fvisibility=hidden". We are currently using this approach as a workaround because we currently don't have many symbols to be considered private, this may be a viable option."-fvisibility=hidden"and manually annotate symbols intended to be public with:__attribute__((visibility("default"))), however, this will require a significant amount of effort."-fvisibility=hidden"with"-fvisibility=default"and manually annotate symbols intended to be private with__attribute__((visibility("hidden")))