libctf: make it compile for old glibc

[Carlos O'Donell]

On 7/11/19 8:01 AM, Nick Alcock wrote:
> On 11 Jul 2019, Hans-Peter Nilsson stated:
> 
>> With a glibc before 2.9 (such as 2.8), there's <endian.h> but no
>> htole64 or le64toh, so you get, compiling binutils for any target:
> 
> Wow, such ancient glibcs are still in use? Aren't they a crawling
> nightmare of security holes?

I was going to say the same thing :-)

Slightly off topic, but are you able to share what product this is
that has glibc 2.8?

As an upstream glibc maintainer I always like to hear about old
uses of glibc and how they might impact our use cases for testing
and compatibility support.

-- 
Cheers,
Carlos.