gcc-4.8/c++ threads, please

[Thomas Klausner <tk%giga.or.at@localhost>]

Hi!

I'm trying to build supercollider from git.

git clone --recursive -b netbsd 
https://github.com/supercollider/supercollider.git

I'm using 6.99.40/amd64 from 20140422.

Building fails with:
In file included from 
/archive/foreign/supercollider/common/SC_SyncCondition.h:25:0,
                 from 
/archive/foreign/supercollider/server/plugins/DiskIO_UGens.cpp:24:
/archive/foreign/supercollider/common/SC_Lock.h:30:9: error: ‘mutex’ in 
namespace ‘std’ does not name a type
 typedef std::mutex SC_Lock;
         ^
/archive/foreign/supercollider/common/SC_Lock.h:31:12: error: ‘std::mutex’ has 
not been declared
 using std::mutex;
            ^
/archive/foreign/supercollider/common/SC_Lock.h:32:12: error: 
‘std::timed_mutex’ has not been declared
 using std::timed_mutex;
            ^
/archive/foreign/supercollider/common/SC_Lock.h:35:12: error: ‘std::cv_status’ 
has not been declared
 using std::cv_status;
            ^
/archive/foreign/supercollider/common/SC_Lock.h:36:9: error: 
‘condition_variable_any’ in namespace ‘std’ does not name a type
 typedef std::condition_variable_any condition_variable_any;
         ^
/archive/foreign/supercollider/common/SC_Lock.h:37:12: error: ‘std::thread’ has 
not been declared
 using std::thread;
            ^
/archive/foreign/supercollider/common/SC_Lock.h:38:30: error: ‘this_thread’ is 
not a namespace-name
 namespace this_thread = std::this_thread;
                              ^
/archive/foreign/supercollider/common/SC_Lock.h:38:41: error: expected 
namespace-name before ‘;’ token
 namespace this_thread = std::this_thread;
                                         ^
/archive/foreign/supercollider/common/SC_Lock.h:41:9: error: ‘SC_Lock’ does not 
name a type
 typedef SC_Lock mutex;
         ^


Looking at /usr/include/g++/bits/x86_64/c++config.h, lots of threading
stuff is disabled:

/* Define to 1 if the target assembler supports thread-local storage. */
/* #undef _GLIBCXX_HAVE_CC_TLS */
/* Define to 1 if the target supports thread-local storage. */
/* #undef _GLIBCXX_HAVE_TLS */
/* Define to 1 if you have the `__cxa_thread_atexit_impl' function. */
/* #undef _GLIBCXX_HAVE___CXA_THREAD_ATEXIT_IMPL */
/* Define if gthreads library is available. */
/* #undef _GLIBCXX_HAS_GTHREADS */
/* Define if pthreads_num_processors_np is available in <pthread.h>. */
/* #undef _GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP */
/* Define to 1 if mutex_timedlock is available. */
#define _GTHREAD_USE_MUTEX_TIMEDLOCK 0

Can someone please add support for threads to g++?

Thanks,
 Thomas