Hi Simon,
Hide all uses of __float128 from Clang.Brackets _GLIBCXX_USE_FLOAT128 with #ifndef __clang__. Clang does not currently support the __float128 builtin, and so will fail to process libstdc++ headers that use it.
if one day clang gets support for this type, won't this still turn everything off? Is it possible to test the compiler on some small program using __float128, and turn off use of __float128 if the compiler barfs? Ciao, Duncan.
