https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65306
--- Comment #4 from Matthew Niemerg <research at matthewniemerg dot com> --- Don't worry about it. The assembler I am using is Apple Inc version cctools-862, GNU assembler version 1.38 (from as -v) So, if I want to get the *.i and *.s files I should add "-save-temps" to say, CPPFLAGS, when I do configure? i.e., modifying my original configure to something like ../gcc-4.9.2/configure --prefix=/usr/local/gcc/4.9.2 --enable-threads --enable-static CPPFLAGS="-save-temps" Thanks, Matt