I got great mileage out of: -fno-eliminate-unused-debug-symbols -fno-eliminate-unused-debug-types https://gcc.gnu.org/onlinedocs/libstdc++/manual/debug.html

I got great mileage out of: -fno-eliminate-unused-debug-symbols -fno-eliminate-unused-debug-types https://gcc.gnu.org/onlinedocs/libstdc++/manual/debug.html https://gcc.gnu.org/onlinedocs/libstdc++/manual/debug.html https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html this post seems way more hardcore and beyond my experience though.