according to the https://stackoverflow.com/a/56283942/1012759
Garbage collector for symbols aka --gc-sections do not work when rdynamic is turned on because all symbols are implicitly referenced.
I do use ofc -ffunction-sections, -fdata-sections to make --gc-sections possible
I need rdynamic for pretty prints for calltraces in backtrace. Is there any option to inform compiler to use "rdynamic" only on symbols that are referenced in the code? Or other option that will generate dynamic symbols but only for used functions?
Problem: binary size grows because --gc-section is blocked by -rdynamic, but I need -rdynamic for pretty prints in backtraces
