Commits on Mar 16, 2018

1. Reduce symbol exposure …

   When creating an ELF shared object (by convention, a file named as
   lib*.so), all symbols are marked as public, hence included in the
   object's export symbol table. This commit reduces exported symbol
   by marking proper 'static'.
   
   [old]
   $ size build/libdcurl.so
      text    data     bss     dec     hex filename
     16752     924     160   17836    45ac build/libdcurl.so
   
   [new]
   size build/libdcurl.so
      text    data     bss     dec     hex filename
     15936     836     168   16940    422c build/libdcurl.so
   
   TODO: there are various way to control over symbol exports in GCC:
     * compiler flag -fvisibility=hidden
     * Using `ld' linker version script
   Once we confirm consistent API naming scheme, we can then apply these
   techniques.

   

   jserv committed Mar 16, 2018
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