gskit: remove

We remove support for building curl with gskit.

 - This is a niche TLS library, only running on some IBM systems
 - no regular curl contributors use this backend
 - no CI builds use or verify this backend
 - gskit, or the curl adaption for it, lacks many modern TLS features
   making it an inferior solution
 - build breakages in this code take weeks or more to get detected
 - fixing gskit code is mostly done "flying blind"

This removal has been advertized in DEPRECATED in Jan 2, 2023 and it has
been mentioned on the curl-library mailing list.

It could be brought back, this is not a ban. Given proper effort and
will, gskit support is welcome back into the curl TLS backend family.

Closes #11460
This commit is contained in:
Daniel Stenberg 2023-08-07 13:02:32 +02:00
parent 08b9f246f4
commit 78d6232f1f
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33 changed files with 35 additions and 1995 deletions

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@ -188,7 +188,7 @@ static CURLcode randit(struct Curl_easy *data, unsigned int *rnd)
* 'rnd' points to.
*
* If libcurl is built without TLS support or with a TLS backend that lacks a
* proper random API (rustls, Gskit or mbedTLS), this function will use "weak"
* proper random API (rustls or mbedTLS), this function will use "weak"
* random.
*
* When built *with* TLS support and a backend that offers strong random, it