On Sat, 17 Dec 2011, Eric Botcazou wrote: >> Putting into gcc/cp/config-lang.in is a layering violation, it's true. But >> until there's another instance that needs handling, it seems premature to >> build infrastructure to handle this. And it's only one line after all... > I don't know exactly why, but this breaks bootstrap on some machines:
I may be wrong, but it occurs to me your log already shows why? > make[3]: Entering directory > `/red.a/gnatmail-x/build-red/x86_64-linux/gnat/obj/libcpp' > g++ -I../../src/libcpp -I. -I../../src/libcpp/../include ... > cc1plus: error: unrecognized command line option "-Wno-narrowing" Here g++ is invoked without an absolute path, so if you have an older version of g++ in your path that does not grok -Wno-narrowing yet that will fail, won't it? I assume that's why only some like you and me are seeing this, but not all of us. Gerald
