Re: [Qemu-devel] [PATCH v3 6/8] docker: make sure debootstrap is at least 1.0.67

[Sascha Silbe]

Dear Fam,

Fam Zheng <address@hidden> writes:

[...]
>> +        NEED_DEBOOTSTRAP=true
>> +    elif ! (echo "${MIN_DEBOOTSTRAP_VERSION}" ; "${DEBOOTSTRAP}" --version \
>> +            | cut -d ' ' -f 2) | sort -t . -n -k 1,1 -k 2,2 -k 3,3 -C; then
>
> Like -V, -C is not available on OSX either. Maybe use "-c"? If so, I can fix 
> it
> when applying.
>
> https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man1/sort.1.html

Thanks for the pointer. So Apple took a 2005 version of GNU sort,
removed version sort support (introduced in 1997) and neglected to
update it for POSIX.1-2008 compliance [1]?

Guess using "-c" and redirecting stderr to /dev/null is our only option
then. Feel free to fix that up when applying.

Thanks for pointing out these portability issues!

Sascha

[1] http://pubs.opengroup.org/onlinepubs/9699919799/utilities/sort.html
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Softwareentwicklung Sascha Silbe, Niederhofenstraße 5/1, 71229 Leonberg
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