hi, I tried to build gcc trunk to test -flto but I keep getting the same error during link: /usr/bin/ld: /tmp/cclQrpIm.lto.o: relocation R_X86_64_PC32 against symbol `_ZN3ns316g_logTi mePrinterE' can not be used when making a shared object; recompile with -fPIC /usr/bin/ld: final link failed: Bad value collect2: ld returned 1 exit status So, I added -fPIC instead of -fpic to my build lines but still get the error which means that I probably forgot one file somewhere but I am stuck while trying to figure out which of them I forgot: /tmp/cclQrpIm.lto.o does not exist anymore when gcc returns so, I can't just go and look at it to figure which source file it corresponds to. Would someone know of a nice gcc option which can make it report a more useful error (or which can make it leave the file in place) ? Mathieu -- Mathieu Lacage <mathieu.lacage@xxxxxxxxx>