On Sat, Sep 8, 2012 at 8:14 PM, Ian Lance Taylor <iant@xxxxxxxxxx> wrote: > 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. This is what I've found: In the libstdc++-v3 Makefile CXXFLAGS are set to -O2 -pipe -march=native -D_GNU_SOURCE. While my actual CXXFLAGS are CXXFLAGS=-O2 -pipe -march=native. But, in this case My CXXFLAGS_FOR_TARGET is set to "-O2 -pipe -mcpu=v8". CFLAGS in libstdc++-v3 Makefile is set to my CFLAGS_FOR_TARGET. Does this give you anything? -- chs,
