You're right Jonathan, sorry forthe mistake.
Please read:
gfortran -O3  -ffree-form  -c  myfile.f
and
gfortran -O3  -ffree-form  -c myfile.f   -o myfile.o

Patrick

Le 01/01/2023 à 14:32, Jonathan Wakely a écrit :
>
>
> On Sun, 1 Jan 2023, 12:01 Patrick Begou via Gcc-help, 
> <gcc-help@gcc.gnu.org> wrote:
>
>     You are using a wrong option that may overwrite your fortran
>     source file
>     with the result of the compilation..
>     To create only the .o file use:
>
>     gfortran -O3 -ffree-form*-c*  myfile.f
>
>     or, f you want:
>
>     gfortran -O3 -ffree-form*-c*  myfile.f*-o myfile.o*
>
>
>
> This markup doesn't really help in plain text rendering.
>
>
>
>
>     it will do the same thing.
>
>     Patrick
>
>     Le 01/01/2023 à 09:52, Hans Lonsdale via Gcc-help a écrit :
>     >
>     > I want to compile a file containing a number of subroutines.
>     >
>     > I am using the command
>     >
>     > gfortran -O3 -ffree-form -o myfile.f
>     >
>     > But getting problems with recursive and END PROGRAM statement.
>     >
>     > All I want is making the object file.
>     >
>     > 44 | recursive subroutine quicksort (array)
>     >        | 1
>     > Error: Unclassifiable statement at (1)
>     > myfile.f:112:3:
>     >
>     >    112 | end subroutine quicksort
>     >        |   1
>     > Error: Expecting END PROGRAM statement at (1)
>     > myfile.f:122:35:
>     >
>     > Have done
>     >
>     > gfortran -O3 -ffree-form -o myfile.f
>     >
>     > The command is supposed to make the object file, but I get
>     errors with END PROGRAM declaration.
>     >
>     >
>