https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70428
--- Comment #2 from hongxu jia <hongxu.jia at windriver dot com> --- (In reply to jos...@codesourcery.com from comment #1) > I don't think -fdebug-prefix-map is meant to cover this case; you're meant > to use it with paths in the form in which they appear in debug info, which > means passing such an option with the pwd (and options with absolute -I > paths etc.), not an option with a combination of the pwd and a path passed > to the compiler. Do you mean the combination of using *"relative path" source to compile* and *"absolute path" in -fdebug-prefix-map to remap* is not proper? In my case, there are lots of sources with relative/absolute paths, and we want to set '-fdebug-prefix-map' to remap in globally. Rather than set specific '-fdebug-prefix-map' according to the path of sources (relative or absolute). BTW, I come from OpenEmbedded community (https://www.yoctoproject.org/), and we use the powerful gcc for cross compilation. We use -fdebug-prefix-map to remap build dir to target dir, so we could use gdb to debug on target and it could work with sources. //Hongxu
