Johathan, Here's my latest config command and it doesn't look like anything other than c, c++ and lto are enabled so how could it be messing with Ada? Note, I checked to see if Ada was implied by the other flags but that doesn't seem to be the case. ../sources/configure \ --prefix=$BASE/install \ --exec_prefix=$BASE/install \ --with-local-prefix=$BASE/borrowed/arm-zephyr-eabi/arm-zephyr-eabi \ --with-headers=$BASE/borrowed/arm-zephyr-eabi/arm-zephyr-eabi/include \ --disable-bootstrap --enable-languages=c,c++,lto --disable-multilib --target=arm-zephyr-eabi \ --disable-shared --enable-__cxa_atexit --disable-tm-clone-registry --disable-libgomp --disable-libmudflap --disable-libmpx --disable-libssp --disable-libquadmath --disable-libquadmath-support --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' --enable-target-optspace --disable-nls --enable-multiarch --with-multilib-list=rmprofile --with-gnu-ld --with-gnu-as --enable-initfini-array Thanks, Gary ________________________________ From: Jonathan Wakely <jwakely.gcc@xxxxxxxxx> Sent: Tuesday, July 12, 2022 11:52 AM To: Gary Oblock <gary@xxxxxxxxxxxxxxxxxxx> Cc: Gary Oblock via Gcc-help <gcc-help@xxxxxxxxxxx> Subject: Re: Followup on "Configure error question" [EXTERNAL EMAIL NOTICE: This email originated from an external sender. Please be mindful of safe email handling and proprietary information protection practices.] On Tue, 12 Jul 2022, 19:37 Gary Oblock via Gcc-help, <gcc-help@xxxxxxxxxxx<mailto:gcc-help@xxxxxxxxxxx>> wrote: Note, it seems that the previous error is from "make install." However, this is from configure: gcc: fatal error: cannot execute '\''gnat1'\'': execvp: No such file or directory Any hints what's wrong? It looks like you've tried to configure with ada enabled and you don't have an existing gnat compiler. You need an existing gnat to build gnat.