On Tue, 14 Jun 2022 at 01:37, Damian Rouson wrote: > > > > On Mon, Jun 13, 2022 at 8:27 AM Jonathan Wakely via Fortran > <fortran@gcc.gnu.org> wrote: >> >> >> Yes, it does that, but takes 400 lines of shell script to do so. >> >> If you want "relatively easy ways to build GCC painlessly" then you >> can do it with nine lines of shell commands. >> >> Or in about 80, for any non-prehistoric version, with no config file >> needed (just a single option to the script, the release number or >> snapshot name to build): >> https://gist.github.com/jwakely/95b3a790157f55d75e18f577e12b50d7#file-build_gcc_versions-sh > > > Do the above 9 lines or 80 lines include the entire prerequisite software > stack or just the ones that the download_prerequisites script downloads? If > I recall correctly, building gfortran also requires flex and building flex > requires bison and building bison requires m4 and the download_prerequisites > script didn't download any of those the last time I checked.
It doesn't include them, but they are standard system packages that everybody can install without downloading the sources and building them from scratch. There are no run-time dependencies on flex and bison, just build-time. GMP, MPFR and MPC regularly cause problems for people doing it the wrong way and ending up with run-time dependencies on shared libs in non-standard locations (as described in the InstallingGCC wiki page). You still need to have the other prerequisites listed at https://gcc.gnu.org/install/prerequisites.html
