error: conflicts with previous declaration unsigned in wait::<anonymous struct>::__w_

What does this error mean?

Whenever I compile it gives me these errors:

/usr/include/bits/waitstatus.h|80|error: declaration of ‘unsigned int wait::<anonymous struct>::__w_retcode’|
/usr/include/bits/waitstatus.h|75|error: conflicts with previous declaration ‘unsigned int wait::<anonymous struct>::__w_retcode’|
/usr/include/bits/waitstatus.h|81|error: declaration of ‘unsigned int wait::<anonymous struct>::__w_coredump’|
/usr/include/bits/waitstatus.h|74|error: conflicts with previous declaration ‘unsigned int wait::<anonymous struct>::__w_coredump’|
/usr/include/bits/waitstatus.h|82|error: declaration of ‘unsigned int wait::<anonymous struct>::__w_termsig’|
/usr/include/bits/waitstatus.h|73|error: conflicts with previous declaration ‘unsigned int wait::<anonymous struct>::__w_termsig’|
/usr/include/bits/waitstatus.h|94|error: declaration of ‘unsigned int wait::<anonymous struct>::__w_stopsig’|
/usr/include/bits/waitstatus.h|89|error: conflicts with previous declaration ‘unsigned int wait::<anonymous struct>::__w_stopsig’|
/usr/include/bits/waitstatus.h|95|error: declaration of ‘unsigned int wait::<anonymous struct>::__w_stopval’|
/usr/include/bits/waitstatus.h|88|error: conflicts with previous declaration ‘unsigned int wait::<anonymous struct>::__w_stopval’|
CConsole.cpp||In function ‘void Con_Unkown(std::string)’:|
CConsole.cpp|39|warning: deprecated conversion from string constant to ‘char*’|
CConsole.cpp||In function ‘void Con_Bump()’:|
CConsole.cpp|45|warning: deprecated conversion from string constant to ‘char*’|
CConsole.cpp|47|warning: deprecated conversion from string constant to ‘char*’|
CConsole.cpp|48|warning: deprecated conversion from string constant to ‘char*’|
CConsole.cpp|49|warning: deprecated conversion from string constant to ‘char*’|
CConsole.cpp||In function ‘void Con_Print(char*, ...)’:|
CConsole.cpp|64|warning: deprecated conversion from string constant to ‘char*’|
CConsole.cpp||In member function ‘void CConsole::Draw()’:|
CConsole.cpp|114|warning: deprecated conversion from string constant to ‘char*’|
CConsole.cpp|119|warning: deprecated conversion from string constant to ‘char*’|
CConsole.cpp|125|warning: deprecated conversion from string constant to ‘char*’|
CConsole.cpp|131|warning: deprecated conversion from string constant to ‘char*’|
CConsole.cpp|133|warning: deprecated conversion from string constant to ‘char*’|
CConsole.cpp||In member function ‘bool CConsole::Con_ExecCmd(std::string)’:|
CConsole.cpp|241|warning: deprecated conversion from string constant to ‘char*’|
||=== Build finished: 10 errors, 12 warnings ===|

Welcome to LQ.

You will have to supply a little more information :
The OS : Linux , name , version ( like Ubuntu 9.04,
Fedora 10, etc.)
And what are you compiling ?
Which command(s) are used for it ?
... But anyway, the text says 'build finished',
may be no fatal errors, merely warnings ?

http://www.linuxquestions.org/linux/...Ask_a_Question
http://linuxsilo.net/docs/smart-questions_en.html
.....

Were there any warnings or errors above the first line you have shown here? Especially any header files not found?

I find that when error messages don't make sense, I often make progress by focusing on and solving the very first one and then try again.

||=== Build finished: 10 errors, 12 warnings ===|

I don't recognize that style. Is it the output of a Makefile? Are you using gcc?