本文主要是介绍[ffmpeg] build symbol file，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
1. ffmpeg 默认配置: disable debugging "symbol file"
2. ffmpeg enable debugging symbol file
参考./configure -h ,仅仅使用 ‘--enable-debug=3’ 是不能使可执行文件中含有debugging symbol file.
有一个参考配置，能使能debugging symbol file
./configure \
--enable-debug=3 \
--disable-optimizations \
--disable-asm \
--disable-stripping
备注：
如果编译不过，请根据具体的出错信息处理，有一个点可以参考，config.mak -O3 选项可能会导致编译错误， 换成-O1或者去掉都可以，试试吧。至于原因，也不甚清楚。
3. debug level 设置
Level 0 produces no debug information at all. Thus, -g0 negates-g.
Level 1 produces minimal information, enough for making backtraces in parts of the program that you don't plan to debug. This includes descriptions of functions and external variables, but no information about local variables and no line numbers.
Level 3 includes extra information, such as all the macro definitions present in the program. Some debuggers support macro expansion when you use-g3.
4. 更多编译选项信息请参考gcc手册
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