Actually, reading the previous messages in this thread, it seems that gfortran is installed, but the executable is named "gfortran-4.3".
Because of this, the prereq spkg doesn't find it (it's looking for an executable named "gfortran" in your PATH). If you have root access to this machine, I suggest that you make a symbolic link for the executable, i.e. as root do cd /usr/bin ln -s gfortran-4.3 gfortran Then try "make" again. Best, Alex On Sun, 28 Feb 2010 21:25:17 +1100, Minh Nguyen <nguyenmi...@gmail.com> wrote: > Hi, > > On Sun, Feb 28, 2010 at 9:17 PM, bourbabis <bourba...@gmail.com> wrote: > > <SNIP> > > > checking for gfortran... no > > checking whether we are using the GNU Fortran compiler... no > > checking whether accepts -g... no > > configure: Since Sage 4.3.1 a Fortran compiler is required on all > > operating > > configure: systems except OS X. A Fortran compiler is included on OS > > X. > > configure: See the file README.txt in the top-level directory. > > configure: error: Exiting, since a Fortran compiler was not found. > > ERROR: You do not have all of the prerequisites needed > > to build Sage from source. See the errors above. > > Do what the error message suggests, i.e. install gfortran. After that, > make sure that gfortran is in your PATH variable. A command such as > the following issued from a terminal session > > which gfortran > > should return the path to your system's gfortran compiler. The following > command > > gfortran --version > > should return the version of your system's gfortran compiler. > > -- > Regards > Minh Van Nguyen > > -- > To post to this group, send email to sage-support@googlegroups.com > To unsubscribe from this group, send email to > sage-support+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-support > URL: http://www.sagemath.org -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org