On Thu, 19 May 2022 at 16:07, Guy Moebs via Gcc-help <gcc-help@xxxxxxxxxxx> wrote: > > Hello, > > > I have solved my problem and managed to compile gcc 11.3.0 and 12.1.0 > completely. > > In the output of the configure command I read : > > configure: WARNING: using in-tree isl, disabling version check > > So I add it to my configure command which is now > > ../gcc-12.1.0/configure --prefix=<path_to_install_dir> > --disable-multilib --enable-threads=posix > --enable-languages=c,c++,fortran,go --disable-isl-version-check > > > and everything works fine. I don't know why ISL causes that error, but you could probably also use --without-isl (if you don't care about the optional graphite optimizations that depend on isl).
