http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60543
--- Comment #15 from Sarantis Pantazis <sarantis.pantazis at gmail dot com> --- > Did you install the compiler (i.e. run 'make install')? Yes, I did. I read http://gcc.gnu.org/install/index.html and made a summary of the steps I followed (attached here). I also kept a log of "make" and "make install" (also attached here). I also tried changing COMPILER=gfortran to COMPILER=/home/sarantis/latestGcc/gcc-build/gcc/gfortran and got the following error: gfortran: error trying to exec 'f951': execvp: No such file or directory > Do you get gzip'ed modules if you use .../gcc/f951 instead of > .../gcc/gfortran? Compiling with COMPILER=/home/sarantis/latestGcc/gcc-build/gcc/f951 leads to zipped files and no IMPLICIT_PURE. But f951 does not accept -c so no executable was produced. It seems it is something trivial but my knowledge outside of fortran is still rather limited...