统计目标文件的RAM和ROM开销

ref

问题：怎么统计工程中部分代码的RAM开销和ROM开销 ？

e.g., the total ram and rom usage in a.o and b.o ?

size -t a.o b.o

• -t means totoals;
• talk more about output format
  • default ouput format is Berkeley;
    • .rodata section is in .text section;
  • using --format=SysV to see more detail;