[libvirt PATCH 16/31] m4: virt-xdr: rewrite XDR check

[Daniel P. Berrangé]

On Thu, Jul 02, 2020 at 02:25:14PM +0200, Pavel Hrdina wrote:
> The current code to check XDR support was obsolete and way to
> complicated.
> 
> On linux we can use pkg-config to check for libtirpc and have
> the CFLAGS and LIBS configured by it as well.

Historically we've only used libtirpc for RHEL 8, not RHEL 7,
though I see it did indeed exist in RHEL-7. So this would mean
the libvirt.spec.in condition needs updating.

> 
> On MinGW there is portablexdr library which installs header files
> directly into system include directory.
> 
> On FreeBSD and macOS XDR functions are part of libc so there is
> no library needed, we just need to call AM_CONDITIONAL to silence
> configure which otherwise complains about missing WITH_XDR.

Regards,
Daniel
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