[LTP] [PATCH 1/2] getrlimit/getrlimit03: add configure-time check for struct ulimit64

[Greg Hackmann]

On 12/03/2018 01:25 PM, Petr Vorel wrote:
> Glibc and uclibc-ng define struct rlimit64 only #ifdef __USE_LARGEFILE64.

Makes sense.  I ran into this issue with bionic, which doesn't require 
-D_LARGEFILE64_SOURCE for these kinds of definitions.

> Would it make sense to change autoconf test to AC_COMPILE_IFELSE and pass -D_LARGEFILE64_SOURCE to it?
> + Use it in Makefile, of course.
> 
> 
> Kind regards,
> Petr
> 

I'm honestly not that familiar with autotools, so I'm not sure I follow 
this.  Are you suggesting that we assume struct rlimit64 is defined 
(possibly conditionally on -D_LARGEFILE64_SOURCE), and we really ought 
to probe whether -D_LARGEFILE64_SOURCE is required to make it visible?