C++ 编译后的symbol 名字转成原来的名字

需要用到一个工具 c++filt，这个来自 binutils 包
e.g.

$ nm f | g Foo
00000000004008ca W _ZN3Foo5HelloEv
$ c++filt  _ZN3Foo5HelloEv
Foo::Hello()

Refer to: https://www.ibm.com/support/knowledgecenter/en/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/proguide/cppfilt.html