LTO and -g for nonELF binary
Pavol Gono via Gcc-help <[email protected]> Thu, 15 Jan 2026 22:31:27 +0100
| Newsgroups | gmane.comp.gcc.help |
|---|---|
| Message-ID | <CAOJUd61s-dT+=ynRQ51iS1y+T2-v3q1CiPko3VgPvXVOdN4E-Q@mail.gmail.com> |
Hello I am compiling C++ binary in the MSYS2+MINGW64 environment (Target: x86_64-w64-mingw32), using the latest g++ version (15.2+). I am using the RelWithDebInfo build type, which means options -O2 -g (eventually -g1). How risky is the usage of LTO (-flto) in addition? In documentation I read: Link-time optimization does not work well with generation of debugging information on systems other than those using a combination of ELF and DWARF. Is there a risk of incorrect debugging symbols or anything worse? Thank you Pavol