I've attached the log from running make with the autogen project (which depends on guile). As a quick summary, the compiler issue seems to be due to the use of the variable name "noreturn" in libguile/throw.h, line 94, in the function declaration scm_ithrow(). As I'm not very familiar with C++11, I don't know if this is a compiler bug on clang's end, implementation-defined behaviour on both clang's and gcc's ends, or a problem on your part with using a C++11 keyword as an argument name.

Also, while compiling guile itself, I get the following message: