Hi, I have been using -fdebug-prefix-map successfully recently, while compiling C++ on Centos 6 boxes. I just hit a strange stumbling block though - sometimes, under conditions I can't quite pin down, it just doesn't work. I can compile an object file and look at the output with dwarfdump and see that the prefix maps have been applied, and then make an apparently innocent code change, compile again, and find that none of the maps have been applied. I have seen this behaviour with both gcc 4.4.0 and 4.4.7. I tried to whittle the code down to a small example I can pass along, but I get to a point where it starts working fine while the code is still quite large. So I don't have an example I can share yet, sorry. The code in question is including various boost headers if that helps. Dave
