On Sat, Sep 8, 2012 at 10:55 AM, Christer Solskogen <christer.solskogen@xxxxxxxxx> wrote: > On 08.09.2012 19:16, Ian Lance Taylor wrote: > >> I'm sorry, I don't have any suggestion beyond actually debugging the >> problem in detail. >> > > Any hint on where I can begin to look? Edit the top-level Makefile to remove the @ before the commands run for all-target-libstdc++-v3. Then make will print out the command it is running for the recursive invocation of make. Examine the command closely to see how the flags are being passed. Repeat as necessary for the libstdc++-v3 Makefiles. Use the information gained to determine the next step. Ian