How to avoid occupy code memory by "Uncalled Segment"?

There are many functions in my source code. If some functions don't be used in current target. There are some warning message about "Uncalled Segment" after compling. And these uncalled segments also...
How to avoid occupy code memory by "Uncalled Segment"?

There are many functions in my source code. If some functions don't be used in current target. There are some warning message about "Uncalled Segment" after compling. And these uncalled segments also...
Define strings as unsigned

Hello, I'm using a graphical Display and have a printf() Function which expects an unsigned char pointer: void LCD_DrawString(unsigned char* s); using LCD_DrawString("Hello World"); generates a...
Define strings as unsigned

Hello, I'm using a graphical Display and have a printf() Function which expects an unsigned char pointer: void LCD_DrawString(unsigned char* s); using LCD_DrawString("Hello World"); generates a...
Structure fields & RAM variables on the same address

I have a structure with various fields. And there are few global variables. The structure fields and the global variables (basically status-flags) denote same information. It doesnt make sense to have...