#############################################################
# Building 'tdgesv' and sample output on the SGIs
#############################################################
einstein% pwd; ls
/usr2/people/phy329/linsys/ex1
Makefile     tdgesv.f

einstein% printenv LIBBLAS
-lblas

einstein% more Makefile
############################################################
#  Note that this 'Makefile' assumes that the following
#  environment variables are set:
#
#     F77
#     F77PP
#     F77FLAGS
#     F77CFLAGS
#     F77LFLAGS
#     LIBBLAS  
#
#  Put the appropriate 'setenv' commands in your '~/.cshrc'.  
#  See 'phy329@einstein:~/.cshrc' for an example.
#
#  IMPORTANT: Note the use of LIBBLAS which should be 
#  set to '-lblas' on the SGI machines.  BLAS stands for
#  Basic Linear Algebra Support and is a Fortran- and 
#  C-callable library which implements basic manipulations
#  useful in numerical linear algebra.
############################################################
.IGNORE:

F77_COMPILE  = $(F77) $(F77FLAGS) $(F77CFLAGS)
F77_LOAD     = $(F77) $(F77FLAGS) $(F77LFLAGS)

.f.o:
        $(F77PP) $*.f
        $(F77_COMPILE) $*.f

EXECUTABLES = tdgesv

all: $(EXECUTABLES)

tdgesv: tdgesv.o 
        $(F77_LOAD) tdgesv.o -llapack $(LIBBLAS) -o tdgesv

clean:
        rm *.o
        rm $(EXECUTABLES)
einstein% make
        touch tdgesv.f
        f77 -g -n32 -c tdgesv.f
        f77 -g -n32 -L/usr/localn32/lib -n32 tdgesv.o \
            -llapack -lblas -o tdgesv

einstein% tdgesv

    5.426364412431639     -0.3257753768173935     -0.4083508069894624