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I need to create a shared library .so and keep everything except a selected list of functions hidden. I think I should be able to make everything hidden by default by adding -fvisibility=hidden -fvisibility-inlines-hidden to my CFLAGS in the Makefile Settings, then putting __attribute__((visibility(“default”))) in front of the functions I want to be visible. Adding the visibility arguments to the CFlags has no effect on the results I get from running nm on the .so I compile. Everything stays at default visibility.
I’ve also tried manually adding __attribute__((visibility(“hidden”))) to every function I don’t want included in the .so but this doesn’t have any effect either.
That got it to hide the unwanted functions coming from my own code, but running nm on my shared library is still listing memcpy, memmove, and other stdlib functions. Is there any way to hide these as well?
Yes, please refer to the following post: http://stackoverflow.com/questions/2222162/how-to-apply-gcc-fvisibility-option-to-symbols-in-static-libraries
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