I was launch ‘./config.guess’ in the gcc directorie ! The folder of gcc call only gcc It is a GitHub download 😉 I will launch your command line now 😉 Your command line Jonathan fail I go to mirror section on the gnu gcc compiler web site for use your folder call gcc 9.1 😊 Libiberty look in the folder I think I will success to intsall the last gcc 😊 I will launch ‘gcc -V’ if the installing finish without errors 😊 Provenance : Courrier<https://go.microsoft.com/fwlink/?LinkId=550986> pour Windows 10 ________________________________ De : Jonathan Wakely <jwakely.gcc@xxxxxxxxx> Envoyé : Tuesday, July 2, 2019 10:35:16 AM À : Dorian ROSSE Cc : Tadeus Prastowo; Andrew Haley; gcc-help@xxxxxxxxxxx Objet : Re: I can't install gcc 9 On Tue, 2 Jul 2019 at 09:28, Dorian ROSSE <dorianbrice@xxxxxxxxxx<mailto:dorianbrice@xxxxxxxxxx>> wrote: ./config.guess -bash: ./config.guess: No such file or directory Then you ran it in the wrong directory. You need to run it in the gcc-9.1.0 source directory. Now I launch the command line advice by Jim 😉 I don’t forgot to create a build folder and go to the folder for build ! The advice from Jim fail too /opt/gcc/build# ../gcc/configure --enable-languages=c,c++,go && make && make install -bash: ../gcc/configure: No such file or directory It needs to be ../gcc-9.1.0/configure instead, to find the configure script in the source directory.