Problems compiling FORTRAN program

Question

I have to compile Fortran programs but I haven't managed to do it.
I'm not an experienced person in this topic but I've tried to make some changes in the makefile, unfortunately the problem persists.

The original makefile was:

CC = cc
F77 = f77
CFLAGS = -g -DSOLARIS -DDEBUG   #-DINTEL -DFREEBSD  #-DDEBUG
FFLAGS = -g -c
OBJDIR= ../bin
LIB = ./sub/libsaito.a

all: shearSAITOniu shearsaito.li shearsaito shearsaito.2 \
#   shearsaito run.saito saito

shearSAITOniu: shearSAITOniu.f  ${LIB}
    f77 shearSAITOniu.f -e -o ${OBJDIR}/shearSAITOniu -g ${LIB}

shearsaito.li: shearsaito.li.f  ${LIB}
    f77 shearsaito.li.f -e -o ${OBJDIR}/shearsaito.li -g ${LIB}

shearsaito: shearsaito.f ${LIB}
    f77 shearsaito.f -e -o ${OBJDIR}/shearsaito ${LIB}

shearsaito.2: shearsaito.2.f  ${LIB}
    f77 shearsaito.2.f -e -o ../bin/shearsaito.2 -g ${LIB}

qsaito.li: qsaito.li.f ${LIB}
    f77 qsaito.li.f -e -o ${OBJDIR}/qsaito.li ${LIB}

forward: forward.f ${LIB}
    f77 forward.f -e -o ${OBJDIR}/forward ${LIB}

#shear3d: shear3d.f ${LIB}
    f77 shear3d.f -e -o shear3d ${LIB}

#run.saito: run.saito.f ${LIB}
    f77 run.saito.f -o run.saito ${LIB}

#s_saito:   s_saito.f ${LIB}
#   f77 s_saito.f -o s_saito ${LIB}

Then I made a change in CCFLAGS replacing -DSOLARIS with -D_LINUX.
After doing make it appears the error message:

f77 shearSAITOniu.f -e -o ../bin/shearSAITOniu -g ./sub/libsaito.a
/usr/bin/f77: Illegal option: -e
make: *** [shearSAITOniu] Error 255

I'm not sure about the meaning of this error message but I also tried to replace the f77 compiler with gfortran and get this error:

gfortran shearSAITOniu.f -e -o ./shearSAITOniu -g ./sub/libsaito.a
gfortran: error: ./shearSAITOniu: No existe el archivo o el directorio
make: *** [shearSAITOniu] Error 1

I think that this programs were compiled originaly in a 32-bit machine, mine is 64-bit, but I don't know how exactly this affects. I hope you could help me solving this issue, thanks.

Answer 1

To compile the program shearSAITOniu with gfortran , use the commandline:

gfortran shearSAITOniu.f -ffree-form -o ./shearSAITOniu -g ./sub/libsaito.a

This will solve the error:

gfortran: error: ./shearSAITOniu: No existe el archivo o el directorio

but not necessarily other errors you have not yet discovered.

This is the reason for that error:

-e is an option of the f77 compiler that means: Accept extended length input source lines .

-o filename is an option of both the f77 and gfortran compilers that means: Create output file "filename" .

-e symbol is an option of the gfortran compiler (strictly, the linker) that means: Make symbol "symbol" the entry point of the program .

For both the f77 and the gfortran compilers a filename that appears on the commandline that is not preceded by the option -o is interpreted as naming an input file for compiling or linking.

Therefore what the failing commandline:

gfortran shearSAITOniu.f -e -o ./shearSAITOniu -g ./sub/libsaito.a

means to gfortran is: Compile and link the input files shearSAITOniu.f , ./shearSAITOniu and ./sub/libsaito.a ; insert debugging information in the resulting program ( -g ), and make symbol -o the entry point of the program.

The -o is interpreted as the symbol of the option -e symbol , and ./shearSAITOniu is interpreted as an input file, which does not exist.