https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88715
--- Comment #2 from tomsies at mighty dot co.za --- Actually binutils-2.29 (along with gmp-6.1.0, mpc-1.0.3 and mpfr-3.1.4) are symlinked into the gcc source tree. So they should be built as part of the compile. My assumption is that the as script generated during the compile process is there to pick up the relevant assembler at different stages of the compile, and so this is a bug, because whatever assembler it is trying to exec will fail with "as: 106: exec: --32: not found" because the exec string is not quoted?