[libvirt] [PATCHv2 1/2] build: avoid journald on rhel 5

[Daniel P. Berrange]

On Mon, Oct 01, 2012 at 05:38:56PM -0600, Eric Blake wrote:
> Commit f6430390 broke builds on RHEL 5, where glibc (2.5) is too
> old to support mkostemp (2.7) or htole64 (2.9).  While gnulib
> has mkostemp, it still lacks htole64; and it's not worth dragging
> in replacements on systems where journald is unlikely to exist
> in the first place, so we just use an extra configure-time check
> as our witness of whether to attempt compiling the code.
> 
> * src/util/logging.c (virLogParseOutputs): Don't attempt to
> compile journald on older glibc.
> * configure.ac (AC_CHECK_DECLS): Check for htole64.
> ---
> 
> v2: use correct configure probe.
> Now tested on both F17 and RHEL 5, so finally pushing under the
> build-breaker rule.

ACK

Daniel
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