On Mon, 2014-04-14 at 10:27 -0500, Matt Godbolt wrote: > However, during the second stage, binutils fails to compile due to > errors of the form: > ../bfd/bfd.h:304:75: error: right-hand operand of comma expression has > no effect [-Werror=unused-value] > #define bfd_set_section_userdata(bfd, ptr, val) (((ptr)->userdata = > (val)),TRUE) I'm not sure if building binutils in-tree is different (I've only built it out-of-tree) but I always add "--disable-werror" to my configure invocation. See if that helps.