Dominique Dumont wrote: > I'm trying to compile Sascha Volkenandt's streamdev plugin and I have > the following error: > > g++ -W -Woverloaded-virtual -O2 -c -D_GNU_SOURCE -DHAVE_AUTOPID -I../../../include -I../../../../DVB/include -I. -o streamdev-client.o streamdev-client.c > ./tools/list.h:93: error: declaration of 'operator+=' as non-function > ./tools/list.h:93: error: expected ';' before '<' token > > Here's one of the problematic line: > > friend cTBList<T> &operator+= <> (cTBList<T> &list1, const cTBList<T> &list2); This is not latest CVS streamdev, it must be some older version. Anyway, this is a GCC-4 compatibility issue. GCC4 follows the ISO C++ standard very closely, while GCC3 allowed some non-standard things to pass through. In this case: A friend declaration no longer is a forward declaration, so these operators have to be forward-declared. The following is from a patch for mplayercluster, that uses a variant of clist: // ANSI/ISO C++ and GCC4 require template friend functions to be forward-declared... template <class T> class cTBList; template <class T> inline cTBList<T> &operator+= (cTBList<T> &list1, const cTBList<T> &list2); template <class T> inline cTBList<T> &operator+= (cTBList<T> &list, const T &element); template <class T> inline cTBList<T> operator+ (const cTBList<T> &list1, const cTBList<T> &list2); template <class T> inline cTBList<T> operator+ (const T &element, const cTBList<T> &list); template <class T> inline cTBList<T> operator+ (const cTBList<T> &list, const T &element); Put it right before the template <class T> class cTBList declaration. It might need some modifications, depends on your clist.h. Cheers, Udo
