enable fvisibility=hidden for our private library

While it is a huge undertaking to enable it for our public libraries as
basically everything we exported so far could be seen as public
interface our private library is new and under our full control, so we
can do whatever we like with it. The benefits are not that big in return
of course, but it reduces the size a bit, so thats great nontheless.

Git-Dch: ignore

1 files changed, 12 insertions, 9 deletions

diff --git a/apt-private/private-output.h b/apt-private/private-output.h
index 81643f90a..9633d0c37 100644
--- a/apt-private/private-output.h
+++ b/apt-private/private-output.h
@@ -2,6 +2,7 @@
 #define APT_PRIVATE_OUTPUT_H
 
 #include <apt-pkg/pkgcache.h>
+#include <apt-pkg/macros.h>
 
 #include <fstream>
 #include <string>
@@ -13,22 +14,24 @@ class pkgDepCache;
 class pkgRecords;
 
 
-extern std::ostream c0out;
-extern std::ostream c1out;
-extern std::ostream c2out;
-extern std::ofstream devnull;
-extern unsigned int ScreenWidth;
+APT_PUBLIC extern std::ostream c0out;
+APT_PUBLIC extern std::ostream c1out;
+APT_PUBLIC extern std::ostream c2out;
+APT_PUBLIC extern std::ofstream devnull;
+APT_PUBLIC extern unsigned int ScreenWidth;
 
-bool InitOutput();
-void ListSingleVersion(pkgCacheFile &CacheFile, pkgRecords &records, 
+APT_PUBLIC bool InitOutput();
+
+void ListSingleVersion(pkgCacheFile &CacheFile, pkgRecords &records,
                        pkgCache::VerIterator V, std::ostream &out,
                        bool include_summary=true);
 
 
 // helper to describe global state
-bool ShowList(std::ostream &out, std::string Title, std::string List,
+APT_PUBLIC void ShowBroken(std::ostream &out,CacheFile &Cache,bool Now);
+
+APT_PUBLIC bool ShowList(std::ostream &out, std::string Title, std::string List,
               std::string VersionsList);
-void ShowBroken(std::ostream &out,CacheFile &Cache,bool Now);
 void ShowNew(std::ostream &out,CacheFile &Cache);
 void ShowDel(std::ostream &out,CacheFile &Cache);
 void ShowKept(std::ostream &out,CacheFile &Cache);