This error occurs when the program is too big to fit in the memory you specified in memory.x. I don't have your memory.x so I can't tell what is your limit but in the following example:

   page0 (rwx) : ORIGIN = 0x0, LENGTH = 256
   /* Board with 32K ROM.  */
   text  (rx)  : ORIGIN = 0x8000, LENGTH = 0x8000

/* And 32K RAM. */ data : ORIGIN = 0x1040, LENGTH = 0x8000-0x1040 }

the program memory is limited by the text region which is 32Kb.

This can happen if you try to link with too many files (whose total exceeds your text region size). It is often the case if you use the Newlib or use floating point operations. The -mshort and -fshort-double may help in reducing that but in many cases this is not enough.

The printf() which comes with Newlib is pretty big and as far as I'm concerned I prefer not to use it. However, it is useful for gcc validation.

Some tips:

  • Try compiling with -mshort -fshort-double -Os

  • Consider using linker relaxation with -mrelax

  • Try using garbage collection of sections

  • Avoid using Newlib and printf

See Also

What is the memory.x?
How can I remove unused functions?
How do I tell the compiler to use direct addressing mode to access data