How this error can be resolved? "SPACE ADDRESS OVERFLOW"

I am using 89C51RD2, when ever my code exceed 8KByte and error is generated by the compiler i.e. *** ERROR L107: ADDRESS SPACE OVERFLOW SPACE: DATA SEGMENT: ?DT?_PPP?MAIN LENGTH: 0006H*** ERROR L105...
How this error can be resolved? "SPACE ADDRESS OVERFLOW"

I am using 89C51RD2, when ever my code exceed 8KByte and error is generated by the compiler i.e. *** ERROR L107: ADDRESS SPACE OVERFLOW SPACE: DATA SEGMENT: ?DT?_PPP?MAIN LENGTH: 0006H*** ERROR L105...
c++.c(17): error C141: syntax error near '}' THIS ERROR SHOWN PLZ HELP ME

#include<AT89X51.h> void delay(unsigned int); void main(void) { P1_1=0; /* unset pin # 1*/ P1_2=0; /* unset pin # 2*/ /* bring delay*/ delay(300); P1_1=1; /* set pin # 1*/ P1_2=1; ...
c++.c(17): error C141: syntax error near '}' THIS ERROR SHOWN PLZ HELP ME

#include<AT89X51.h> void delay(unsigned int); void main(void) { P1_1=0; /* unset pin # 1*/ P1_2=0; /* unset pin # 2*/ /* bring delay*/ delay(300); P1_1=1; /* set pin # 1*/ P1_2=1; ...
identifier undefined in rtx_lib. how to resolve this?

C:\Keil\ARM\RV31\INC\RTX_lib.c(54): error: #20: identifier "OS_TIMER" is undefined C:\Keil\ARM\RV31\INC\RTX_lib.c(126): error: #20: identifier "OS_TVAL" is undefined C:\Keil\ARM\RV31\INC\RTX_lib.c(135...