gfortran 4.3.4: NINT() intrinsic triggers undefined references to '_llround' and '_llroundf'

gfortran 4.3.4: NINT() intrinsic triggers undefined references to '_llround' and '_llroundf'

[Cornelis de Gier]

The NINT() intrinsic in current gfortran under current cygwin triggers
undefined references to '_llround' and '_llroundf'. I found a somewhat
related post here:
http://sourceware.org/ml/cygwin/2010-06/msg00369.html , but I could
not deduce a solution from this message.

Below follows a small test program and the output of gfortran. The
test program worked OK on a linux system.)
====================
program testnint
integer, parameter :: kr64 = selected_real_kind(15,307)
integer, parameter :: ki64 = selected_int_kind(18)

real(kr64)::dp=1.
real::r=2.

write(*,*),nint(r,ki64)
write(*,*),nint(dp,ki64)

endprogram testnint
====================
$ gfortran -Wall testnint.f90
/tmp/ccqOJVB5.o:testnint.f90:(.text+0x5c): undefined reference to `_llroundf'
/tmp/ccqOJVB5.o:testnint.f90:(.text+0xd1): undefined reference to `_llround'
collect2: ld returned 1 exit status
====================


Cornelis

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R: gfortran 4.3.4: NINT() intrinsic triggers undefined references to '_llround' and '_llroundf'

[Marco Atzeri]

--- Ven 15/10/10, Cornelis de Gier ha scritto:

> The NINT() intrinsic in current
> gfortran under current cygwin triggers
> undefined references to '_llround' and '_llroundf'. I found
> a somewhat
> related post here:
> http://sourceware.org/ml/cygwin/2010-06/msg00369.html ,
> but I could
> not deduce a solution from this message.
> 
> Below follows a small test program and the output of
> gfortran. The
> test program worked OK on a linux system.)
> ====================
> program testnint
> integer, parameter :: kr64 = selected_real_kind(15,307)
> integer, parameter :: ki64 = selected_int_kind(18)
> 
> real(kr64)::dp=1.
> real::r=2.
> 
> write(*,*),nint(r,ki64)
> write(*,*),nint(dp,ki64)
> 
> endprogram testnint
> ====================
> $ gfortran -Wall testnint.f90
> /tmp/ccqOJVB5.o:testnint.f90:(.text+0x5c): undefined
> reference to `_llroundf'
> /tmp/ccqOJVB5.o:testnint.f90:(.text+0xd1): undefined
> reference to `_llround'
> collect2: ld returned 1 exit status
> ====================
> 
> 
> Cornelis
> 

As Dave wrote the problem is inside cygwin

> I thought it was just because we are failing to export 
> them in the cygwin.din file.  The correct .o files are
> compiled as part of the newlib libm build.

but we forgot to make a patch.

I will look on it.

Marco






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Re: gfortran 4.3.4: NINT() intrinsic triggers undefined references to '_llround' and '_llroundf'

[Cornelis de Gier]

2010/10/16 Marco Atzeri <marco_atzeri@yahoo.it>:
> As Dave wrote the problem is inside cygwin
>
>> I thought it was just because we are failing to export
>> them in the cygwin.din file.  The correct .o files are
>> compiled as part of the newlib libm build.
>
> but we forgot to make a patch.
>
> I will look on it.
>
> Marco

Below follows a C program that triggers the same undefined reference
(gcc 4.3.4, current cygwin). A simpler version using e.g. llround(4.5)
is optimized away. A strings command on /lib/libm.a shows llround is
not available.

=================================
#include <math.h>
float test(){
return(4.569);
}	

int main(){
return(llround(test()));
}
=================================
$ gcc -Wall -lm testllround.c
/tmp/ccLX7lEo.o:testllround.c:(.text+0x32): undefined reference to `_llround'
collect2: ld returned 1 exit status
=================================
$ strings /lib/libm.a | grep lround
_lround
_lroundf
_lround
__imp__lround
_lroundf
__imp__lroundf
=================================

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Re: gfortran 4.3.4: NINT() intrinsic triggers undefined references to '_llround' and '_llroundf'

[Marco Atzeri]

--- Sab 16/10/10, Cornelis de Gier  ha scritto:

> 2010/10/16 Marco Atzeri <xxxxxxxxx@xxxxxxx>:
                           ^^^^^^^^^^^^^^^^^   
don't feed spammer please

> > As Dave wrote the problem is inside cygwin
> >
> >> I thought it was just because we are failing to
> export
> >> them in the cygwin.din file.  The correct .o
> files are
> >> compiled as part of the newlib libm build.
> >
> > but we forgot to make a patch.
> >
> > I will look on it.
> >
> > Marco
> 
> Below follows a C program that triggers the same undefined
> reference
> (gcc 4.3.4, current cygwin). A simpler version using e.g.
> llround(4.5)
> is optimized away. A strings command on /lib/libm.a shows
> llround is
> not available.
> 
> =================================
> #include <math.h>
> float test(){
> return(4.569);
> }    
> 
> int main(){
> return(llround(test()));
> }
> =================================
> $ gcc -Wall -lm testllround.c
> /tmp/ccLX7lEo.o:testllround.c:(.text+0x32): undefined
> reference to `_llround'
> collect2: ld returned 1 exit status
> =================================
> $ strings /lib/libm.a | grep lround
> _lround
> _lroundf
> _lround
> __imp__lround
> _lroundf
> __imp__lroundf
> =================================

Of course. As I wrote it is a cygwin problem
not a fortran issue.

llround and llroundf are built in newlib (cygwin C library)

$ nm i686-pc-cygwin/newlib/libm.a |grep round |grep T
00000000 T _llround
00000000 T _lround
00000000 T _round
00000000 T _llroundf
00000000 T _lroundf
00000000 T _roundf

but are not included in the final libm.a

$ nm i686-pc-cygwin/winsup/cygwin/libm.a |grep round |grep T
00000000 T _lround
00000000 T _lroundf
00000000 T _round
00000000 T _roundf

I will prepare a patch in the coming days, so that
next cygwin release will have them.

Regards
Marco




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R: gfortran 4.3.4: NINT() intrinsic triggers undefined references to '_llround' and '_llroundf'

[Marco Atzeri]

--- Ven 15/10/10, Cornelis de Gier  ha scritto:

> The NINT() intrinsic in current
> gfortran under current cygwin triggers
> undefined references to '_llround' and '_llroundf'. I found
> a somewhat
> related post here:
> http://sourceware.org/ml/cygwin/2010-06/msg00369.html ,
> but I could
> not deduce a solution from this message.
> 
> Below follows a small test program and the output of
> gfortran. The
> test program worked OK on a linux system.)
> ====================
> program testnint
> integer, parameter :: kr64 = selected_real_kind(15,307)
> integer, parameter :: ki64 = selected_int_kind(18)
> 
> real(kr64)::dp=1.
> real::r=2.
> 
> write(*,*),nint(r,ki64)
> write(*,*),nint(dp,ki64)
> 
> endprogram testnint
> ====================
> $ gfortran -Wall testnint.f90
> /tmp/ccqOJVB5.o:testnint.f90:(.text+0x5c): undefined
> reference to `_llroundf'
> /tmp/ccqOJVB5.o:testnint.f90:(.text+0xd1): undefined
> reference to `_llround'
> collect2: ld returned 1 exit status
> ====================
> 
> 
> Cornelis
> 

next cygwin release/snapshot will solve it.

http://cygwin.com/ml/cygwin-patches/2010-q4/msg00005.html


$ gfortran -Wall testninit.f90 -o testninit

$ ./testninit
                    2
                    1

Marco




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Re: gfortran 4.3.4: NINT() intrinsic triggers undefined references to '_llround' and '_llroundf'

[Cornelis de Gier]

2010/10/18 Marco Atzeri :

> next cygwin release/snapshot will solve it.
>
> http://cygwin.com/ml/cygwin-patches/2010-q4/msg00005.html
>
> $ gfortran -Wall testninit.f90 -o testninit
>
> $ ./testninit
>                    2
>                    1
>
> Marco

Great, thank you for the patch. Next cygwin release llround functions
may be removed from this list then:
http://cygwin.com/cygwin-api/std-notimpl.html


Cornelis

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Re: gfortran 4.3.4: NINT() intrinsic triggers undefined references to '_llround' and '_llroundf'

[Marco Atzeri]

--- Mar 19/10/10, Cornelis de Gier  ha scritto:

> Data: Martedì 19 ottobre 2010, 12:54
> 2010/10/18 Marco Atzeri :
> 
> > next cygwin release/snapshot will solve it.
> >
> > http://cygwin.com/ml/cygwin-patches/2010-q4/msg00005.html
> >
> > $ gfortran -Wall testninit.f90 -o testninit
> >
> > $ ./testninit
> >                    2
> >                    1
> >
> > Marco
> 
> Great, thank you for the patch. Next cygwin release llround
> functions
> may be removed from this list then:
> http://cygwin.com/cygwin-api/std-notimpl.html
> 
> 
> Cornelis
> 

that page need an update. 
I will look later as also the C99 complex, except long double,
are now available and they should be removed from the list.

Regards
Marco




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