What do these two options mean?

chenbingjy

What do these two options mean? [Copy link]

Can someone please tell me what these two C99 Mode and One ELF Section per Function mean? What is their function? Thank you!

dcexpert

C99 is a standard of C language, you can search it on Baidu

qwqwqw2088

The first checkbox is function optimization. Sometimes MDK will run slower.

bobde163

First option:

One ELF Section per Function

Generate one ELF section for each function in source file. Output sections are named with the same name as the function that generates the section. Allows you to optimize code or to locate each function on individual memory addresses. Sets the compiler command-line option --split_sections.

From the literal meaning, the compiler will generate a separate code block for each function. If it is not checked, the source file is used as the code block. If it is checked, the function is used as the code block. This can remove some unused functions when generating the burning program to achieve the optimization effect, but there is also a disadvantage that the constants of each code block are also independent, which will also take up more space. The specific host can try to check and uncheck the difference between the generated intermediate files. Generally, it is unchecked.

chenbingjy

bobde163 发表于 2019-8-2 09:04 第一个选项： One ELF Section per Function Generate one ELF section for each function in source ...

Thanks