I have CC and CXX set to clang and clang++ for quite some time for compiling CinGG. It was working until today: ------- In file included from fileffmpeg.C:10: In file included from ./asset.h:32: In file included from ./indexable.h:29: ./garbage.h:53:33: warning: all paths through this function will call itself [-Winfinite-recursion] Garbage &operator=(Garbage &v) { return *this=v; } //disallow = operator ^ In file included from fileexr.C:27: In file included from ./file.h:37: In file included from ./formattools.h:26: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/guicast.h:62: /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/errorbox.h:35:7: warning: 'ErrorBox::create_objects' hides overloaded virtual function [-Woverloaded-virtual] void create_objects(const char *text); ^ /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bcwindowbase.h:222:15: note: hidden overloaded virtual function 'BC_WindowBase::create_objects' declared here: different number of parameters (0 vs 1) virtual void create_objects() { return; }; ^ In file included from filedv.C:49: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/iostream:39: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/ostream:38: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/ios:42: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/bits/ios_base.h:41: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/bits/locale_classes.h:40: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/string:52: /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/bits/basic_string.h:5653:10: error: expected unqualified-id inline namespace literals ^ In file included from filedv.C:49: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/iostream:39: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/ostream:38: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/ios:42: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/bits/ios_base.h:46: /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:63:10: error: expected unqualified-id inline namespace _V2 { ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:143:31: error: unknown type name 'error_category' error_code(int __v, const error_category& __cat) noexcept ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:152:27: error: unknown type name 'error_category' assign(int __v, const error_category& __cat) noexcept ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:172:11: error: unknown type name 'error_category' const error_category& ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:191:11: error: unknown type name 'error_category' const error_category* _M_cat; ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:141:28: error: use of undeclared identifier 'system_category' : _M_value(0), _M_cat(&system_category()) { } ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:160:17: error: use of undeclared identifier 'system_category' { assign(0, system_category()); } ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:197:46: error: use of undeclared identifier 'generic_category' { return error_code(static_cast<int>(__e), generic_category()); } ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:221:36: error: unknown type name 'error_category' error_condition(int __v, const error_category& __cat) noexcept ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:230:27: error: unknown type name 'error_category' assign(int __v, const error_category& __cat) noexcept ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:251:11: error: unknown type name 'error_category' const error_category& ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:265:11: error: unknown type name 'error_category' const error_category* _M_cat; ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:219:28: error: use of undeclared identifier 'generic_category' : _M_value(0), _M_cat(&generic_category()) { } ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:245:17: error: use of undeclared identifier 'generic_category' { assign(0, generic_category()); } ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:271:51: error: use of undeclared identifier 'generic_category' { return error_condition(static_cast<int>(__e), generic_category()); } ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:348:33: error: unknown type name 'error_category' system_error(int __v, const error_category& __ecat, const char* __what) ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:351:33: error: unknown type name 'error_category' system_error(int __v, const error_category& __ecat) ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:355:33: error: unknown type name 'error_category' system_error(int __v, const error_category& __ecat, const string& __what) ^ In file included from fileexr.C:36: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../thirdparty/openexr-2.4.1/usr/local/include/OpenEXR/ImfChromaticities.h:46: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../thirdparty/openexr-2.4.1/usr/local/include/OpenEXR/ImathVec.h:46: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../thirdparty/openexr-2.4.1/usr/local/include/OpenEXR/ImathExc.h:47: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../thirdparty/openexr-2.4.1/usr/local/include/OpenEXR/IexBaseExc.h:51: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/sstream:38: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/istream:38: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/ios:42: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/bits/ios_base.h:46: /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:63:10: error: expected unqualified-id inline namespace _V2 { ^ fatal error: too many errors emitted, stopping now [-ferror-limit=] /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:143:31: error: unknown type name 'error_category' error_code(int __v, const error_category& __cat) noexcept ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:152:27: error: unknown type name 'error_category' assign(int __v, const error_category& __cat) noexcept ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:172:11: error: unknown type name 'error_category' const error_category& ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:191:11: error: unknown type name 'error_category' const error_category* _M_cat; ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:141:28: error: use of undeclared identifier 'system_category' : _M_value(0), _M_cat(&system_category()) { } ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:160:17: error: use of undeclared identifier 'system_category' { assign(0, system_category()); } ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:197:46: error: use of undeclared identifier 'generic_category' { return error_code(static_cast<int>(__e), generic_category()); } ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:221:36: error: unknown type name 'error_category' error_condition(int __v, const error_category& __cat) noexcept ^ In file included from fileffmpeg.C:12: In file included from ./bitspopup.h:25: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/guicast.h:35: /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bcpan.h:96:6: warning: 'BC_Pan::activate' hides overloaded virtual function [-Woverloaded-virtual] int activate(int popup_x = -1, int popup_y = -1); ^ /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bcwindowbase.h:375:14: note: hidden overloaded virtual function 'BC_WindowBase::activate' declared here: different number of parameters (0 vs 2) virtual int activate(); ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:230:27: error: unknown type name 'error_category' assign(int __v, const error_category& __cat) noexcept ^ In file included from fileffmpeg.C:12: In file included from ./bitspopup.h:25: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/guicast.h:36: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bcfilebox.h:33: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bctextbox.h:25: /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bclistbox.h:190:6: warning: 'BC_ListBox::activate' hides overloaded virtual function [-Woverloaded-virtual] int activate(int take_focus = 1); ^ /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bcwindowbase.h:375:14: note: hidden overloaded virtual function 'BC_WindowBase::activate' declared here: different number of parameters (0 vs 1) virtual int activate(); ^ In file included from fileffmpeg.C:12: In file included from ./bitspopup.h:25: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/guicast.h:36: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bcfilebox.h:33: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bctextbox.h:25: /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bclistbox.h:191:6: warning: 'BC_ListBox::activate' hides overloaded virtual function [-Woverloaded-virtual] int activate(int x, int y, int w=-1, int h=-1); ^ /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bcwindowbase.h:375:14: note: hidden overloaded virtual function 'BC_WindowBase::activate' declared here: different number of parameters (0 vs 4) virtual int activate(); ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:251:11: error: unknown type name 'error_category' const error_category& ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:265:11: error: unknown type name 'error_category' const error_category* _M_cat; ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:219:28: error: use of undeclared identifier 'generic_category' : _M_value(0), _M_cat(&generic_category()) { } ^ 6 warnings and 20 errors generated. make[2]: *** [Makefile:563: i686/filedv.o] Error 1 make[2]: *** Waiting for unfinished jobs.... /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:245:17: error: use of undeclared identifier 'generic_category' { assign(0, generic_category()); } ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:271:51: error: use of undeclared identifier 'generic_category' { return error_condition(static_cast<int>(__e), generic_category()); } ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:348:33: error: unknown type name 'error_category' system_error(int __v, const error_category& __ecat, const char* __what) ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:351:33: error: unknown type name 'error_category' system_error(int __v, const error_category& __ecat) ^ /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/system_error:355:33: error: unknown type name 'error_category' system_error(int __v, const error_category& __ecat, const string& __what) ^ In file included from fileffmpeg.C:12: In file included from ./bitspopup.h:25: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/guicast.h:62: /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/errorbox.h:35:7: warning: 'ErrorBox::create_objects' hides overloaded virtual function [-Woverloaded-virtual] void create_objects(const char *text); ^ /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/bcwindowbase.h:222:15: note: hidden overloaded virtual function 'BC_WindowBase::create_objects' declared here: different number of parameters (0 vs 1) virtual void create_objects() { return; }; ^ In file included from fileexr.C:36: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../thirdparty/openexr-2.4.1/usr/local/include/OpenEXR/ImfChromaticities.h:46: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../thirdparty/openexr-2.4.1/usr/local/include/OpenEXR/ImathVec.h:46: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../thirdparty/openexr-2.4.1/usr/local/include/OpenEXR/ImathExc.h:47: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../thirdparty/openexr-2.4.1/usr/local/include/OpenEXR/IexBaseExc.h:51: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/sstream:38: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/istream:38: In file included from /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/ios:42: /usr/bin/../lib/gcc/i586-slackware-linux/5.5.0/../../../../include/c++/5.5.0/bits/ios_base.h:207:9: error: unknown type name 'error_category' const error_category& iostream_category() noexcept; ^ In file included from fileffmpeg.C:15: In file included from ./ffmpeg.h:29: In file included from /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../thirdparty/ffmpeg.git/./libavformat/internal.h:28: /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../thirdparty/ffmpeg.git/./libavformat/os_support.h:70:19: warning: unused function 'is_dos_path' [-Wunused-function] static inline int is_dos_path(const char *path) ^ In file included from fileffmpeg.C:16: In file included from ./filebase.h:32: In file included from ./file.inc:49: /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/language.h:45:21: warning: unused function 'msgtext' [-Wunused-function] static inline char *msgtext(const char *msgid) ^ /dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra/../guicast/language.h:55:21: warning: unused function 'msgqual' [-Wunused-function] static inline char *msgqual(const char *msgqual,const char *msgid) ^ 5 warnings and 19 errors generated. make[2]: *** [Makefile:563: i686/fileexr.o] Error 1 7 warnings generated. 8 warnings generated. make[2]: Leaving directory '/dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1/cinelerra' make[1]: *** [Makefile:527: all-recursive] Error 1 make[1]: Leaving directory '/dev/shm/tmp/cinelerra-goodguy-20201029/cinelerra-5.1' make: *** [Makefile:483: all] Error 2 ---- Not sure what really caused this, will retry with plain GCC 5.5.0 ....