Re: [f2py] Problems with f2py callback example 64bit ubuntu

Hi,

Add the following line to the body of FOO in callback.f file:

REAL*8 FUN

HTH,
Pearu


On Mon, Nov 30, 2009 at 2:49 PM, Chris Strickland
<christophermarkstrickland-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> I am having trouble in getting f2py callback example to on my 64bit
> installation of ubuntu (both 9.04 and 9.10). I have had no trouble on my
> 32bit installation of ubuntu(9.04). The example I have been trying to get
> work is from the pdf and is as follows.
>
>  C FILE: CALLBACK.F
>       SUBROUTINE FOO(FUN,R)
>       EXTERNAL FUN
>       INTEGER I
>       REAL*8 R
> Cf2py intent(out) r
>       R = 0D0
>       DO I=-5,5
>          R = R + FUN(I)
>       ENDDO
>       END
> C END OF FILE CALLBACK.F
>
> I compiled this using :
> f2py$ f2py -c callback.f -m callback
>
> This is my build log
> running build
> running config_cc
> unifing config_cc, config, build_clib, build_ext, build commands --compiler
> options
> running config_fc
> unifing config_fc, config, build_clib, build_ext, build commands --fcompiler
> options
> running build_src
> building extension "callback" sources
> f2py options: []
> f2py:> /tmp/tmpi5QIEz/src.linux-x86_64-2.6/callbackmodule.c
> creating /tmp/tmpi5QIEz
> creating /tmp/tmpi5QIEz/src.linux-x86_64-2.6
> Reading fortran codes...
>     Reading file 'callback.f' (format:fix,strict)
> Post-processing...
>     Block: callback
>             Block: foo
>                     Block: fun
> Post-processing (stage 2)...
> Building modules...
>     Constructing call-back function "cb_fun_in_foo__user__routines"
>       def fun(i): return r
>     Building module "callback"...
>         Constructing wrapper function "foo"...
>           r = foo(fun,[fun_extra_args])
>     Wrote C/API module "callback" to file
> "/tmp/tmpi5QIEz/src.linux-x86_64-2.6/callbackmodule.c"
>   adding '/tmp/tmpi5QIEz/src.linux-x86_64-2.6/fortranobject.c' to sources.
>   adding '/tmp/tmpi5QIEz/src.linux-x86_64-2.6' to include_dirs.
> copying /usr/lib/python2.6/dist-packages/numpy/f2py/src/fortranobject.c ->
> /tmp/tmpi5QIEz/src.linux-x86_64-2.6
> copying /usr/lib/python2.6/dist-packages/numpy/f2py/src/fortranobject.h ->
> /tmp/tmpi5QIEz/src.linux-x86_64-2.6
> running build_ext
> customize UnixCCompiler
> customize UnixCCompiler using build_ext
> customize GnuFCompiler
> Could not locate executable g77
> Could not locate executable f77
> customize IntelFCompiler
> Could not locate executable ifort
> Could not locate executable ifc
> customize LaheyFCompiler
> Could not locate executable lf95
> customize PGroupFCompiler
> Could not locate executable pgf90
> Could not locate executable pgf77
> customize AbsoftFCompiler
> Could not locate executable f90
> customize NAGFCompiler
> Found executable /usr/bin/f95
> customize VastFCompiler
> customize GnuFCompiler
> customize CompaqFCompiler
> Could not locate executable fort
> customize IntelItaniumFCompiler
> Could not locate executable efort
> Could not locate executable efc
> customize IntelEM64TFCompiler
> customize Gnu95FCompiler
> Found executable /usr/bin/gfortran
> customize Gnu95FCompiler
> customize Gnu95FCompiler using build_ext
> building 'callback' extension
> compiling C sources
> C compiler: gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall
> -Wstrict-prototypes -fPIC
>
> creating /tmp/tmpi5QIEz/tmp
> creating /tmp/tmpi5QIEz/tmp/tmpi5QIEz
> creating /tmp/tmpi5QIEz/tmp/tmpi5QIEz/src.linux-x86_64-2.6
> compile options: '-I/tmp/tmpi5QIEz/src.linux-x86_64-2.6
> -I/usr/lib/python2.6/dist-packages/numpy/core/include
> -I/usr/include/python2.6 -c'
> gcc: /tmp/tmpi5QIEz/src.linux-x86_64-2.6/callbackmodule.c
> gcc: /tmp/tmpi5QIEz/src.linux-x86_64-2.6/fortranobject.c
> compiling Fortran sources
> Fortran f77 compiler: /usr/bin/gfortran -Wall -ffixed-form
> -fno-second-underscore -fPIC -O3 -funroll-loops
> Fortran f90 compiler: /usr/bin/gfortran -Wall -fno-second-underscore -fPIC
> -O3 -funroll-loops
> Fortran fix compiler: /usr/bin/gfortran -Wall -ffixed-form
> -fno-second-underscore -Wall -fno-second-underscore -fPIC -O3 -funroll-loops
> compile options: '-I/tmp/tmpi5QIEz/src.linux-x86_64-2.6
> -I/usr/lib/python2.6/dist-packages/numpy/core/include
> -I/usr/include/python2.6 -c'
> gfortran:f77: callback.f
> /usr/bin/gfortran -Wall -Wall -shared
> /tmp/tmpi5QIEz/tmp/tmpi5QIEz/src.linux-x86_64-2.6/callbackmodule.o
> /tmp/tmpi5QIEz/tmp/tmpi5QIEz/src.linux-x86_64-2.6/fortranobject.o
> /tmp/tmpi5QIEz/callback.o -lgfortran -o ./callback.so
> running scons
> Removing build directory /tmp/tmpi5QIEz
>
> When I run in python my output is as follows
>
>>>> import callback
>>>> def f(i): return i*i
> ...
>>>> print callback.foo(f)
> 0.0
>>>>
>
> The routing callback.foo(f) should be returning 110.0
>
> Any help with this problem will be greatly appreciated.
>
> Regards,
> Chris.
>
>
>
>
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