Re: is there a way to find out gfortran version and/or options from a given binary?

[Andre Vehreschild <vehre@gmx.de>]

Hi Kay,

did you try:

$ strings coarray_collectives_18 | grep  GNU
GCC: (GNU) 11.2.1 20211203 (Red Hat 11.2.1-7)
GCC: (GNU) 12.0.1 20220214 (experimental)
GNU Fortran2008 12.0.1 20220214 (experimental) -mtune=generic -march=x86-64 -g
-fcoarray=lib -fintrinsic-modules-path
/home/vehre/Projekte/gcc/gfortran/lib/gcc/x86_64-pc-linux-gnu/12.0.1/finclude
-fpre-include=/usr/include/finclude/math-vector-fortran.h GNU C11 12.0.1
20220214 (experimental) -mshstk -mtune=generic -march=x86-64 -g -O2 -O0
-std=gnu11 -fcf-protection=full -fcx-fortran-rules -ffunction-sections
-fdata-sections __GNU_EH_FRAME_HDR

or

strings coarray_collectives_18 | grep GCC

...
? 

Both give me some output (albeit more than I desire) for an executable compiled
with gfortran. But presumably, I had activated debug. I don't know, if
optimized builds will have it, too.

Regards,
	Andre

On Wed, 1 Jun 2022 11:41:41 +0200
Kay Diederichs <Kay.Diederichs@uni-konstanz.de> wrote:

> Hi Arjen,
> 
> thanks for your answer. I do know about these functions, and use them in my
> own programs if appropriate. However, programs distributed to others for
> production use should not output this because it confuses users (as does
> "Note: The following floating-point exceptions are signalling:
> IEEE_INVALID_FLAG" which I need to switch off with -ffpe-summary=none).
> 
> So I really am looking for strings or other type of info in the binary.
> 
> Best wishes,
> Kay
> 
> On 6/1/22 11:30, Arjen Markus wrote:
> > Are you perhaps looking for the compiler_version() and compiler_options()
> > functions? I use them like this, they were defined in Fortran 2008 if I am
> > not mistaken:
> > 
> > 
> >                  WRITE( lurep, '(a)' ) 'Report of simulation'
> >                  WRITE( lurep, '(a)' ) '--------------------'
> >                  WRITE( lurep, '(a)' ) 'Compiler version: ',
> > compiler_version() WRITE( lurep, '(a)' ) 'Compiler options: ',
> > compiler_options()
> > 
> > Regards,
> > 
> > Arjen
> > 
> > Op wo 1 jun. 2022 om 10:42 schreef Kay Diederichs
> > <kay.diederichs@uni-konstanz.de <mailto:kay.diederichs@uni-konstanz.de>>:
> > 
> >     Hi,
> > 
> >     is there any gfortran option and/or version information available
> > from/in a binary? Maybe accessible with objdump or strings?
> > 
> >     For ifort, we use the -sox option ("This option tells the compiler to
> > save the compilation options and version number in the executable file.
> > ..."). This enables e.g. strings /path/to/binary | grep Intel
> > 
> >     Or is there a gfortran option that makes this accessible in a binary?
> > 
> >     Thanks,
> >     Kay
> > 
> >   
> 


-- 
Andre Vehreschild * Email: vehre ad gmx dot de