Error: L6200E: Symbol multiply defined

I have a code with following files: - Extern_file.h int variable = 5; void function (void); - Extern_file.c #include Extern_file.h void function (void){ variable++; } - main...
Error: L6200E: Symbol multiply defined

I have a code with following files: - Extern_file.h int variable = 5; void function (void); - Extern_file.c #include Extern_file.h void function (void){ variable++; } - main...
Error: L6200E: Symbol SystemInit multiply defined

I am studying ARM with the book TI Tiva ARM Programming For Embedded Systems written by Muhammad Ali Mazid. I tried Keil with the codes provided by the book and it always comes out an error L6200. ...
Error: L6200E: Symbol SystemInit multiply defined

I am studying ARM with the book TI Tiva ARM Programming For Embedded Systems written by Muhammad Ali Mazid. I tried Keil with the codes provided by the book and it always comes out an error L6200. ...
blink.axf: Error: L6200E: Symbol os_thread_def_blink_LED multiply defined (by led.o and main.o).

hello, Error: L6200E: Symbol os_thread_def_blink_LED multiply defined (by led.o and main.o)..i have declared the variable led.h header file. and included the same header file in all the sub files