[daip] large file support on solaris2.6

[Vincent McIntyre]

Hi
I have a user who is trying to make files larger than 2Gb with uvcopy,
on a solaris 2.6 machine with 1Gb of core and 1.7Gb of swap. We run 31dec99.

He is getting a 'file too large' error that is coming from the OS level, ie
ATTILA> UVCOP2: ZERROR: ON FILE DA03:UVD001001.0JH;
ATTILA> UVCOP2: ZERROR: IN ZEXPN2 ERRNO = 27 (File too large)
ATTILA> UVCOP2: COPYUV: ERROR   2 EXPANDING OUTPUT VIS FILE

attila% grep 27 /usr/include/sys/errno.h
#define EFBIG   27      /* File too large                       */

I looked at the large file support for solaris and it seems you have to change
calls to seek() and so on, according to lfcompile(5):
     Set the  compile-time  flag  _FILE_OFFSET_BITS  to  64
     before including any headers. Applications may combine
     objects  produced  in  the  large   file   compilation
     environment  with objects produced in the transitional
     compilation environment,  but  must  be  careful  with
     respect  to  interoperability  between  those objects.
and
  Access to Additional Large File Interfaces
     The fseek() and ftell() functions do not  map  to  functions
     named  fseek64() and ftell64(); rather, the large file addi-
     tions fseeko() and ftello(), have functionality identical to
     fseek()  and  ftell()  and  do  map  to the 64-bit functions
     fseeko64() and ftello64(). Applications  wishing  to  access
     large  files  should  use  fseeko() and ftello() in place of
     fseek() and ftell().

Can you tell me if there are standard compilation flags to turn on
largefile support in AIPS? It seems not, from a grep through the source tree.
I couldn't see any mention of this on www.cv.nrao.edu either.
There is a POSIX standard, so it should be fairly portable:
     Applications wishing to access   fseeko()  and  ftello()  as
     well as the POSIX and X/Open specification-conforming inter-
     faces should define the macro _LARGEFILE_SOURCE to be 1  and
     set  whichever feature test macros are appropriate to obtain
     the desired environment (see standards(5)).

Any advice appreciated
Vincent McIntyre                                        vmcintyr at atnf.csiro.au
Australia Telescope National Facility, CSIRO             voice:+61-2-9372-4643
PO Box 76, Epping, NSW 1710, AUSTRALIA                     fax:+61-2-9372-4442