Martin Olsson <mnemo@xxxxxxxxxx> writes: > gcc docs say that -g gives "system's native format" and -ggdb gives > dbg info "for use by GDB": > http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html > > ...what does this mean in more concrete terms? What command or > functionality in gdb, that I normally cannot use, am I able to use > after building with -ggdb ? Unfortunately the docs in this area should be updated. Currently the default for most systems is DWARF, and when using DWARF -ggdb doesn't make any difference. At least not as far as I can tell. The -ggdb option makes a difference when using STABS debug info. There it makes a range of improvements, should as recording const/volatile qualifiers, the directory where a source file is found rather than just the file name, supporting non-standard integer type sizes, supporting boolean types, etc. Also it's worth noting that -g defaults to -ggdb anyhow on most systems, including all GNU/Linux systems. Ian
