All,

  k3b looks like it needs a lot of work. I vaguely recall fixing numerous
out-of-scope issues when gcc 4.7 emerged, but have forgotten the details.
Building k3d, the following are a number of errors resulting in the FTBFS. I
have summarized the errors themselves below. From the summary it looks like the
error: invalid use of incomplete type 'mpc_decoder {aka struct mpc_decoder_t}'
at k3bmpcwrapper.cpp:77:28 starts the domino falling. If that could be fixed,
then it may resolve a number of the remaining errors. So c++ gurus, "What is the
proper way to do that?"


  Summary of the errors:

k3bmpcwrapper.cpp:77:28: error: invalid use of incomplete type 'mpc_decoder
/usr/include/mpc/mpcdec.h:55:16: error: forward declaration of 'mpc_decoder
k3bmpcwrapper.cpp:88:10: note: neither the destructor nor the class-specific
operator delete will be called, even if they are declared when the class is defined
k3bmpcwrapper.cpp:101:33: error: 'mpc_streaminfo_init' was not declared in this
scope
k3bmpcwrapper.cpp:102:47: error: 'mpc_streaminfo_read' was not declared in this
scope
k3bmpcwrapper.cpp:102:52: error: 'ERROR_CODE_OK' was not declared in this scope
k3bmpcwrapper.cpp:107:46: error: 'mpc_decoder_setup' was not declared in this scope
k3bmpcwrapper.cpp:108:54: error: 'mpc_decoder_initialize' was not declared in
this scope
k3bmpcwrapper.cpp:136:77: error: 'mpc_decoder_decode' was not declared in this scope
k3bmpcwrapper.cpp:173:78: error: 'mpc_decoder_seek_seconds' was not declared in
this scope


  Errors in context:

k3bmpcwrapper.cpp:74:22: warning: invalid conversion from 'mpc_bool_t (*)(void*)
{aka unsigned char (*)(void*)}' to 'mpc_bool_t (*)(mpc_reader*) {aka unsigned
char (*)(mpc_reader_t*)}' [-fpermissive]
   m_reader->canseek  = canseek_impl;
                      ^
k3bmpcwrapper.cpp:77:28: error: invalid use of incomplete type 'mpc_decoder {aka
struct mpc_decoder_t}'
   m_decoder          = new mpc_decoder;
                            ^
In file included from k3bmpcwrapper.h:27:0,
                 from k3bmpcwrapper.cpp:16:
/usr/include/mpc/mpcdec.h:55:16: error: forward declaration of 'mpc_decoder {aka
struct mpc_decoder_t}'
 typedef struct mpc_decoder_t mpc_decoder;
                ^
k3bmpcwrapper.cpp: In destructor 'K3bMpcWrapper::~K3bMpcWrapper()':
k3bmpcwrapper.cpp:88:10: warning: possible problem detected in invocation of
delete operator: [enabled by default]
   delete m_decoder;
          ^
k3bmpcwrapper.cpp:88:10: warning: invalid use of incomplete type 'struct
mpc_decoder_t' [enabled by default]
In file included from k3bmpcwrapper.h:27:0,
                 from k3bmpcwrapper.cpp:16:
/usr/include/mpc/mpcdec.h:55:16: warning: forward declaration of 'struct
mpc_decoder_t' [enabled by default]
 typedef struct mpc_decoder_t mpc_decoder;
                ^
k3bmpcwrapper.cpp:88:10: note: neither the destructor nor the class-specific
operator delete will be called, even if they are declared when the class is defined
   delete m_decoder;
          ^
k3bmpcwrapper.cpp: In member function 'bool K3bMpcWrapper::open(const TQString&)':
k3bmpcwrapper.cpp:101:33: error: 'mpc_streaminfo_init' was not declared in this
scope
     mpc_streaminfo_init( m_info );
                                 ^
k3bmpcwrapper.cpp:102:47: error: 'mpc_streaminfo_read' was not declared in this
scope
     if( mpc_streaminfo_read( m_info, m_reader ) != ERROR_CODE_OK ) {
                                               ^
k3bmpcwrapper.cpp:102:52: error: 'ERROR_CODE_OK' was not declared in this scope
     if( mpc_streaminfo_read( m_info, m_reader ) != ERROR_CODE_OK ) {
                                                    ^
k3bmpcwrapper.cpp:107:46: error: 'mpc_decoder_setup' was not declared in this scope
       mpc_decoder_setup( m_decoder, m_reader );
                                              ^
k3bmpcwrapper.cpp:108:54: error: 'mpc_decoder_initialize' was not declared in
this scope
       if( !mpc_decoder_initialize( m_decoder, m_info ) ) {
                                                      ^
k3bmpcwrapper.cpp: In member function 'int K3bMpcWrapper::decode(char*, int)':
k3bmpcwrapper.cpp:136:77: error: 'mpc_decoder_decode' was not declared in this scope
   unsigned int samples = mpc_decoder_decode( m_decoder, sample_buffer, 0, 0 );
                                                                             ^
k3bmpcwrapper.cpp: In member function 'bool K3bMpcWrapper::seek(const K3b::Msf&)':
k3bmpcwrapper.cpp:173:78: error: 'mpc_decoder_seek_seconds' was not declared in
this scope
   return mpc_decoder_seek_seconds( m_decoder, (double)msf.totalFrames()/75.0 );
                                                                              ^
k3bmpcwrapper.cpp: In member function 'bool K3bMpcWrapper::open(const TQString&)':
k3bmpcwrapper.cpp:122:1: warning: control reaches end of non-void function
[-Wreturn-type]
 }
 ^
k3bmpcwrapper.cpp: In member function 'bool K3bMpcWrapper::seek(const K3b::Msf&)':
k3bmpcwrapper.cpp:174:1: warning: control reaches end of non-void function
[-Wreturn-type]
 }
 ^
Makefile:639: recipe for target 'k3bmpcwrapper.lo' failed
make[4]: *** [k3bmpcwrapper.lo] Error 1
make[4]: Leaving directory '/build/tde-k3b/src/k3b/plugins/decoder/musepack'
Makefile:542: recipe for target 'all-recursive' failed
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory '/build/tde-k3b/src/k3b/plugins/decoder'
Makefile:536: recipe for target 'all-recursive' failed
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory '/build/tde-k3b/src/k3b/plugins'
Makefile:594: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/build/tde-k3b/src/k3b'
Makefile:511: recipe for target 'all' failed
make: *** [all] Error 2


-- 
David C. Rankin, J.D.,P.E.