2018-07-01 19:22:53 +08:00
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# Items to be removed from future curl releases
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2018-07-02 14:14:53 +08:00
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If any of these deprecated features is a cause for concern for you, please
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2021-08-12 20:44:26 +08:00
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email the
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2021-08-30 15:51:07 +08:00
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[curl-library mailing list](https://lists.haxx.se/listinfo/curl-library)
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2021-08-12 20:44:26 +08:00
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as soon as possible and explain to us why this is a problem for you and
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2021-10-31 23:34:44 +08:00
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how your use case cannot be satisfied properly using a workaround.
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2018-09-05 06:05:46 +08:00
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2022-09-27 16:42:36 +08:00
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## Support for systems without 64 bit data types
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curl will *require* support for a 64 bit data type (like `long long` or an
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alternative) to build. These days, few systems are used where no such type is
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2022-12-10 03:10:42 +08:00
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around, so it is increasingly unnecessary to spend effort and time on
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maintaining this support. Also, supporting 32 bit values for some of those
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2022-09-27 16:42:36 +08:00
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fields is complicated and hard to test.
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Adding this requirement will make the code simpler, easier to maintain and the
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test coverage better. It is a low price too, since virtually no users are
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still building curl on such systems.
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`long long` was not a standard type until C99, but has been supported by C89
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compilers since the 1990s.
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Starting in 8.0.0 (March 2023), the plan is to drop support.
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2022-09-27 17:13:21 +08:00
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Starting in 7.86.0, building curl with configure requires the additional flag
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`--with-n64-deprecated` if the `curl_off_t` type on your system is smaller
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than 8 bytes, in an attempt to highlight these plans to affected users.
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2022-02-07 21:20:03 +08:00
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## NSS
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2022-08-17 16:06:11 +08:00
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We remove support for building curl with the NSS TLS library in August 2023.
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2022-02-07 21:20:03 +08:00
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2022-09-19 23:30:30 +08:00
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- There are few users left who use curl+NSS
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- NSS has few users outside of curl as well (primarily Firefox)
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2022-02-07 21:20:03 +08:00
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- NSS is harder than ever to find documentation for
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- NSS was always "best" used with Red Hat Linux when they provided additional
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2022-03-29 19:58:11 +08:00
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features on top of the regular NSS that is not shipped by the vanilla library
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2022-02-07 21:20:03 +08:00
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Starting in 7.82.0, building curl to use NSS configure requires the additional
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2022-09-21 05:30:19 +08:00
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flag `--with-nss-deprecated` in an attempt to highlight these plans.
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2022-02-07 21:20:03 +08:00
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## past removals
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2019-05-15 19:57:16 +08:00
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2020-01-16 15:17:04 +08:00
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- Pipelining
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- axTLS
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- PolarSSL
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2022-09-01 15:23:22 +08:00
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- NPN
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