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b39c158e4a
Fix SC2046: "Quote this to prevent word splitting." Ref: https://www.shellcheck.net/wiki/SC2046 Also: - shellcheck.sh: add `set -eu`. - shellcheck.sh, yamlcheck.sh: always run from repo root. - pass `--` before passing the list of files, where missing. - badwords.pl, cleancmd.pl: rework to accept `git ls-files` arguments. Requires Perl 5.22+ (2015-Jun-01) on Windows. Ref: https://perldoc.perl.org/functions/open - INTERNALS.md: require Perl 5.22 on Windows. - spacecheck.pl: formatting. - GHA/http3-linux: rework command to avoid SC2046. - stop suppressing SC2046 warnings. The yamlcheck.sh issue reported-by: Stanislav Fort (Aisle Research) Ref: 20251109163515_6eb31da3-deb2-4f4d-8327-935904f27da5 Closes #19432
62 lines
1.8 KiB
Markdown
62 lines
1.8 KiB
Markdown
<!--
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Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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-->
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# curl internals
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The canonical libcurl internals documentation is now in the [everything
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curl](https://everything.curl.dev/internals) book. This file lists supported
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versions of libs and build tools.
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## Portability
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We write curl and libcurl to compile with C89 compilers on 32-bit and up
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machines. Most of libcurl assumes more or less POSIX compliance but that is
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not a requirement.
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We write libcurl to build and work with lots of third party tools, and we
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want it to remain functional and buildable with these and later versions
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(older versions may still work but is not what we work hard to maintain):
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## Dependencies
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We aim to support these or later versions.
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- OpenSSL 1.0.2a
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- LibreSSL 2.9.1
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- GnuTLS 3.1.10
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- mbedTLS 3.2.0
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- zlib 1.2.5.2
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- libssh2 1.9.0
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- c-ares 1.6.0
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- libssh 0.9.0
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- libidn2 2.0.0
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- wolfSSL 3.4.6
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- OpenLDAP 2.0
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- MIT Kerberos 1.3
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- nghttp2 1.15.0
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## Build tools
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When writing code (mostly for generating stuff included in release tarballs)
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we use a few "build tools" and we make sure that we remain functional with
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these versions:
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- GNU Libtool 1.4.2
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- GNU Autoconf 2.59
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- GNU Automake 1.7
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- GNU M4 1.4
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- perl 5.8 (5.22 on Windows)
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- roffit 0.5
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- cmake 3.7
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Library Symbols
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===============
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All symbols used internally in libcurl must use a `Curl_` prefix if they are
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used in more than a single file. Single-file symbols must be made static.
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Public ("exported") symbols must use a `curl_` prefix. Public API functions
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are marked with `CURL_EXTERN` in the public header files so that all others
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can be hidden on platforms where this is possible.
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