Hello, I have posted a question regarding this a few days ago on stack overflow and until now no one was able to answer my question. Here is the link to original question: http://stackoverflow.com/questions/26626789/when-should-no-undefined-flag-be-used-for-shared-libraries And here is a copy of the question: Let us say that we have the following library dependencies (lib are shared libraries) lib1 lib2 lib3 lib4 | | | | -------lib5 lib6---- | | | | lib7 | | | | | | | -------exe-------------- I decided to build all libraries with -fvisibility=hidden and -Wl,--no-undefined compiler flags. exe requires lib4, lib5, lib6 and lib7. It does not directly require lib1, lib2 and lib3. lib1 is linked both to lib5 and lib7 but its symbols are hidden from exe because -fvisibility=hidden is used. lib4 has to be directly linked to exe even though lib6 is already linked to it because -fvisibility=hidden hides all lib3 symbols that are used by lib6. My question is if there is any reason not to use -Wl,--no-undefined flag with shared libraries in any of the above cases (or cases that I haven't thought of)? Thanks, Domen
