With Gcc-g compilation, GDB still has "no debug symbols found" error while debugging

Today, to debug a piece of code, use GCC to recompile the program with the-G option. However, when debugging with GDB, "No debug symbols found" error still occurs. Carefully check the makefile, originally defined in the connection options specified in the-S. The GCC documentation describes the following:

-sRemove all symbol table and relocation information from the executable.

After removing-s, you can debug with GDB.

With Gcc-g compilation, GDB still has "no debug symbols found" error while debugging