>> I will work on -fvisibility=hidden support through AC_TRY_COMPILE.
Does any one know if/how libtool supports the -fvisibility option?
This would be appropriate given how it adds -fPIC -DPIC to shared
libraries. The same technique could do the magic for the visibility. I
failed to find anything in the docs. I am surprised because the option
has been around since 2005 and all major compilers support it by now.
It is possible to hack it into the libtool script, of course.
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