no input files when calling gfortran

no input files when calling gfortran

[Hans Lonsdale]

Am trying to compile a free-format fortran file with some subroutines in it, with gfortran complaining
about the file.  What is going on?

gfortran -O3 -ffree-form -o kamkrai-sort.f
gfortran: fatal error: no input files; unwilling to write output files
compilation terminated.


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Re: no input files when calling gfortran

[Jonathan Wakely]

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On Sun, 1 Jan 2023, 11:43 Hans Lonsdale via Gcc-help, <gcc-help@gcc.gnu.org>
wrote:

> Am trying to compile a free-format fortran file with some subroutines in
> it, with gfortran complaining
> about the file.  What is going on?
>
> gfortran -O3 -ffree-form -o kamkrai-sort.f
> gfortran: fatal error: no input files; unwilling to write output files
> compilation terminated.
>



The -o option names the output file, but you have told the compiler to use
your input file as the output file.

Re: no input files when calling gfortran

[Hans Lonsdale]

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January 1, 2023 at 2:31:28 PM CET Jonathan Wakely <jwakely.gcc@gmail.com> wrote:

On Sun, 1 Jan 2023, 11:43 Hans Lonsdale via Gcc-help, <gcc-help@gcc.gnu.org> wrote:

Am trying to compile a free-format fortran file with some subroutines in it, with gfortran complaining
about the file.  What is going on?

gfortran -O3 -ffree-form -o kamkrai-sort.f
gfortran: fatal error: no input files; unwilling to write output files
compilation terminated.

The -o option names the output file, but you have told the compiler to use your input file as the output file.

What is the appropriate command that generates the object file only ?

 
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Re: no input files when calling gfortran

[Tom Kacvinsky]

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On Sun, Jan 1, 2023 at 10:34 AM Hans Lonsdale via Gcc-help <
gcc-help@gcc.gnu.org> wrote:

>
>
> January 1, 2023 at 2:31:28 PM CET Jonathan Wakely <jwakely.gcc@gmail.com>
> wrote:
>
> On Sun, 1 Jan 2023, 11:43 Hans Lonsdale via Gcc-help, <
> gcc-help@gcc.gnu.org> wrote:
>
> Am trying to compile a free-format fortran file with some subroutines in
> it, with gfortran complaining
> about the file.  What is going on?
>
> gfortran -O3 -ffree-form -o kamkrai-sort.f
> gfortran: fatal error: no input files; unwilling to write output files
> compilation terminated.
>
> The -o option names the output file, but you have told the compiler to use
> your input file as the output file.
>
> What is the appropriate command that generates the object file only ?
>

gfortran -O3 -ffree-form -c kamkrai-sort.f

Or if you want to name the object file differently,

gfortran -O3 -ffree-form -c  kamkrai-sort.f -o some_other_name.o

Re: no input files when calling gfortran

[Hans Lonsdale]

> ----------------------------------------
> From: Tom Kacvinsky via Gcc-help <gcc-help@gcc.gnu.org>
> Sent: Sun Jan 01 16:48:06 CET 2023
> To: Gcc Help <gcc-help@gcc.gnu.org>
> Subject: Re: no input files when calling gfortran
> 
> 
> On Sun, Jan 1, 2023 at 10:34 AM Hans Lonsdale via Gcc-help <
> gcc-help@gcc.gnu.org> wrote:
> 
> >
> >
> > January 1, 2023 at 2:31:28 PM CET Jonathan Wakely <jwakely.gcc@gmail.com>
> > wrote:
> >
> > On Sun, 1 Jan 2023, 11:43 Hans Lonsdale via Gcc-help, <
> > gcc-help@gcc.gnu.org> wrote:
> >
> > Am trying to compile a free-format fortran file with some subroutines in
> > it, with gfortran complaining
> > about the file.  What is going on?
> >
> > gfortran -O3 -ffree-form -o kamkrai-sort.f
> > gfortran: fatal error: no input files; unwilling to write output files
> > compilation terminated.
> >
> > The -o option names the output file, but you have told the compiler to use
> > your input file as the output file.
> >
> > What is the appropriate command that generates the object file only ?
> >
> 
> gfortran -O3 -ffree-form -c kamkrai-sort.f

I tried your suggestion but I am getting 

 recursive subroutine quicksort (array)
Error: Unclassifiable statement at (1)

end subroutine quicksort
Error: Expecting END PROGRAM statement at (1)

But this is just a file with some variables and a recursive subroutine.



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