curl/docs/DEPRECATE.md
Daniel Stenberg 78d6232f1f
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
2023-08-07 20:57:48 +02:00

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Markdown

# Items to be removed from future curl releases
If any of these deprecated features is a cause for concern for you, please
email the
[curl-library mailing list](https://lists.haxx.se/listinfo/curl-library)
as soon as possible and explain to us why this is a problem for you and
how your use case cannot be satisfied properly using a workaround.
## mingw v1
We remove support for building curl with the original legacy mingw version 1
in September 2023.
During the deprecation period you can enable the support with the configure
option `--with-mingw1-deprecated`.
mingw version 1 is old and deprecated software. There are much better and
still support build environments to use to build curl and other software. For
example [MinGW-w64](https://www.mingw-w64.org/).
## space-separated `NOPROXY` patterns
When specifying patterns/domain names for curl that should *not* go through a
proxy, the curl tool features the `--noproxy` command line option and the
library supports the `NO_PROXY` environment variable and the `CURLOPT_NOPROXY`
libcurl option.
They all set the same list of patterns. This list is documented to be a set of
**comma-separated** names, but can also be provided separated with just
space. The ability to just use spaces for this has never been documented but
some users may still have come to rely on this.
Several other tools and utilities also parse the `NO_PROXY` environment
variable but do not consider a space to be a valid separator. Using spaces for
separator is probably less portable and might cause more friction than commas
do. Users should use commas for this for greater portability.
curl will remove the support for space-separated names in July 2024.
## past removals
- Pipelining
- axTLS
- PolarSSL
- NPN
- Support for systems without 64 bit data types
- NSS
- gskit