"make" in a Fortran library results in "Command not found" error

I have Ubuntu 10.04 and gcc version 4.4.3

I have been trying to install this library called SUPER_LU and there are some codes in it are written in Fortran. Typing "make" at the top level directory gives me the following errors

gaurish108@gaurish108-laptop:~/Desktop/Research Meetings/PETSC and SUper LU/SuperLU_4.0$ make
( cd INSTALL; make )
make[1]: Entering directory `/home/gaurish108/Desktop/Research Meetings/PETSC and SUper LU/SuperLU_4.0/INSTALL'
g77  -o testdlamch dlamch.o lsame.o dlamchtst.o
***make[1]: g77: Command not found***
make[1]: *** [testdlamch] Error 127
make[1]: Leaving directory `/home/gaurish108/Desktop/Research Meetings/PETSC and SUper LU/SuperLU_4.0/INSTALL'
make: *** [install] Error 2

This has happened with me in the past also when i tried to download some math libraries? always thought g77 cam bundles up with gcc. When I tried to install g77 separately with sudo apt-get install g77, this is what I got

gaurish108@gaurish108-laptop:~/Desktop/Research Meetings/PETSC and SUper LU/SuperLU_4.0$ sudo apt-get install g77[sudo] password for gaurish108: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package g77 is not available, but is referred to by another package.
This may mean开发者_高级运维 that the package is missing, has been obsoleted, or
is only available from another source
E: Package g77 has no installation candidate

What should I do?

As of gcc 4.0, g77 has been replaced with gfortran.