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Date: Sat, 16 Oct 2010 13:19:55 +0200
Message-ID: <AANLkTi=fHP=JvYFB0BoLkmcZibYoLXcC4BFeR7f7EEpF@mail.gmail.com>
Subject: Re: gfortran 4.3.4: NINT() intrinsic triggers undefined references to '_llround' and '_llroundf'
From: Cornelis de Gier <cwdegier AT gmail DOT com>
To: cygwin AT cygwin DOT com
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2010/10/16 Marco Atzeri <marco_atzeri AT yahoo DOT 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. =C2=A0The 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.

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
#include <math.h>
float test(){
return(4.569);
}=09

int main(){
return(llround(test()));
}
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
$ gcc -Wall -lm testllround.c
/tmp/ccLX7lEo.o:testllround.c:(.text+0x32): undefined reference to `_llroun=
d'
collect2: ld returned 1 exit status
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
$ strings /lib/libm.a | grep lround
_lround
_lroundf
_lround
__imp__lround
_lroundf
__imp__lroundf
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D

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