Hello Jonathan, Why not: Possibly I'm missing something on my OS that could be making it not know where to find it: Right now it's just trying to run cc1 through execve but doesn't pass a path for cc1, just a plan cc1, which fails to be found as a result. Did you run make install? Yes, that's the next step actually, and cc1 is located in a libexec path of my sysroot. On Wed, Sep 21, 2022 at 1:49 PM Jonathan Wakely <jwakely.gcc@xxxxxxxxx> wrote: > > On Wed, 21 Sept 2022 at 12:43, Nuno Silva via Gcc-help > <gcc-help@xxxxxxxxxxx> wrote: > > > > Hello, > > This is my first post in this mailing list, so I apologize if I do > > anything wrong. > > > > I'm working on a hobby operating system and, as part of making apps > > for it, I'm trying to port gcc to it. To be clear: I already have my > > cross compiler, I just want to make gcc run inside the OS. > > > > However, gcc doesn't seem to find cc1, and when I look into the > > searchdirs it shows relative paths (prepended with ".."), which means > > it would never find cc1. > > Why not? > > > I'm configuring GCC with the following: > > > > configure --host=x86_64-toast --prefix=/usr --target=x86_64-toast > > --with-sysroot=/ --with-build-sysroot=<my sysroot dir> > > --enable-languages=c,c++ --enable-initfini-array --disable-multilib > > --disable-nls --enable-lto --with-system-zlib CFLAGS=-O2 CXXFLAGS=-O2 > > > > Then running make all-gcc all-target-libgcc all-target-libcstdc++-v3 > > Did you run make install? > Because that's what installs cc1 and gcc into the right locations so > that the relative paths work.