On 26/12/14 23:54, Cyd Haselton wrote: > Just to make sure I'm on the same page: > Rebuild 4.8.3 and/or upgrade to 4.8.4 and keep build directory > Compare 4.8.4 build dir (or build dir of component that failed) to > corresponding 4.9.2 location. > > That about right? No. Keep a log of the entire build: make | tee make.log and look at how the dynamic libgcc is linked. Look at the makefile to see where that lib comes from. Look at the 4.9 makefile to see where it is different. Andrew.