Darwin linker error "illegal text-relocation" with -shared

[Ryan S. Elliott]

On Mon, 16 Apr 2018, Thomas Koenig wrote:

> Hello Ryan,
>
>> foo.f90
>> ----------------------------------------------
>> module foo contains
>>  Â  subroutine bar
>>  Â Â Â  use, intrinsic :: iso_c_binding
>>  Â Â Â  call gee(c_funloc(gee))
>>  Â  end subroutine
>>  Â  subroutine gee(f) bind(c)
>>  Â Â Â  use, intrinsic :: iso_c_binding
>>  Â Â Â  type(c_funptr) :: f
>>  Â  end subroutine
>> end module foo
>> ----------------------------------------------
>> 
>> $ gfortran-7 -shared foo.f90
>
> You are invoking gfortran without the "-c" option, so it expects to
> generate an executable. Yet, you specify "-shared", which only makes
> sense for a library, and your source code does not contain a main
> program.
>
> What happens if you run
>
> "gfortran -c -shared foo.f90" ?

Hello,  Thanks for your message.

Your suggestion does not generate an error, but only because it does not invoke 
the linker in order to create a shared library.  It just creates a .mod and .o 
file.

In other words, the -c flag overrides the -shared flag.  This is not what I 
want.  I want to create a shared library which is done by the linker.

Ryan