Re: [bgl-discuss] netcdf compilation on BGL

[Kazutomo Yoshii <kazutomo@xxxxxxxxxxx>]

Actually libc for compute node has those symbols.

To make sure,

$ mpicc -Wall a.c && ./a.out
0
0x1480fc

[a.c]
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
int main()
{
printf("%d\n",errno);
printf("%p\n",__ctype_b);
return 0;
}


>On Tue, Jul 12, 2005 at 03:14:59PM -0500, Kazutomo Yoshii wrote:
>  
>
>>seems to me that this is linking order issue
>>because error,__ctype**,etc are all libc symbols.
>>nm /bgl/BlueLight/ppcfloor/blrts-gnu/powerpc-bgl-blrts-gnu/lib/libc.a
>>    
>>
>
>[...]
>  
>
>>>>../netcdf/ibm_power3/libnetcdf.a(ncio.o)(.text+0x11be): In function
>>>>`px_pgin':
>>>>: undefined reference to `errno'
>>>>../netcdf/ibm_power3/libnetcdf.a(string.o)(.text+0xe): In function
>>>>`toupper':
>>>>: undefined reference to `__ctype_toupper'
>>>>../netcdf/ibm_power3/libnetcdf.a(string.o)(.text+0x4f6): In function
>>>>`NC_check_name':
>>>>: undefined reference to `__ctype_b'
>>>>        
>>>>
>
>My memory's a bit hazy, but IIRC, these symbols are no longer defined
>in newer versions of glibc, having been replaced by locale-aware
>versions (see, eg,
>https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=86465).  Perhaps
>the netcdf library being linked against
>(/home/walkup/local/netcdf-3.5.1/lib/libnetcdf.a) was created with an
>older glibc?  In that case, perhaps linking against a netcdf library
>which was created under the current glibc would work?  Don't know if
>such a library exists offhand.
>
>John
>
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>  
>


-- 
Kazutomo Yoshii   http://www-unix.mcs.anl.gov/~kazutomo/

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