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Re: [PATCH] Switch IDNA implementation to libidn2 [BZ #19728] [BZ #19729] [BZ #22247]
On 02/04/2018 02:28 AM, Florian Weimer wrote:
> On 02/04/2018 03:54 AM, Rical Jasan wrote:
>> On 02/02/2018 04:41 AM, Florian Weimer wrote:
>>> This is the patch rebased to 2.28. It still depends on the
>>> allocate_once patch (which has been reviewed).
>>> I'd especially appreciate a review of the makefile/build system changes.
>> If the default is to build with an external libidn2 if possible,
>> shouldn't there be a configure switch to build --without-libidn2 (or
>> --en/disable-idn, etc.)?
> There is no build or mandatory run-time dependency on libidn2. The
> glibc implementation of AI_* merely assumes that libidn2 will not change
> ABI without changing SONAME or symbol version. I don't think a
> configure flag is needed.
So libidn2 is optional, and glibc builds fine with or without it, but if
it finds it, it will build against it, correct? Because it's optional,
I think we should have the ability to tell glibc not to build against
libidn2 even if it's found.