Bug 9893 – [ELF] export should affect symbol visibility

There are a number of good reasons to switch to explicit export, i.e. normal symbols use hidden visibility and exported symbols use default visibility. - Windows compatibility - less performance impact for PIC as only exported symbols require an indirection - faster symbol lookup reduces the load time - more possibilities for link time optimizations - inlining visible functions breaks interposition For a more detailed reading see http://gcc.gnu.org/wiki/Visibility http://www.akkadia.org/drepper/dsohowto.pdf NB: As of now libphobos2.so exports 14100 symbols and 87139 with unittests compiled in.

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