aa378570f5
It was wrongly bumped to 1.16.0 in db50fc6e95. While we strongly
recommend using 1.16.0 or later, we still allow builds using older
versions.
It would make sense to raise the requirement to at least 1.11.0 (Feb 19
2016) but that's not done right now.
Closes #16221
62 lines
1.8 KiB
Markdown
62 lines
1.8 KiB
Markdown
<!--
|
|
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
|
|
SPDX-License-Identifier: curl
|
|
-->
|
|
|
|
# curl internals
|
|
|
|
The canonical libcurl internals documentation is now in the [everything
|
|
curl](https://everything.curl.dev/internals) book. This file lists supported
|
|
versions of libs and build tools.
|
|
|
|
## Portability
|
|
|
|
We write curl and libcurl to compile with C89 compilers on 32-bit and up
|
|
machines. Most of libcurl assumes more or less POSIX compliance but that is
|
|
not a requirement.
|
|
|
|
We write libcurl to build and work with lots of third party tools, and we
|
|
want it to remain functional and buildable with these and later versions
|
|
(older versions may still work but is not what we work hard to maintain):
|
|
|
|
## Dependencies
|
|
|
|
We aim to support these or later versions.
|
|
|
|
- OpenSSL 0.9.7
|
|
- GnuTLS 3.1.10
|
|
- zlib 1.2.0.4
|
|
- libssh2 1.2.8
|
|
- c-ares 1.6.0
|
|
- libidn2 2.0.0
|
|
- wolfSSL 3.4.6
|
|
- OpenLDAP 2.0
|
|
- MIT Kerberos 1.2.4
|
|
- Heimdal ?
|
|
- nghttp2 1.15.0
|
|
- Winsock 2.2 (on Windows 95+ and Windows CE .NET 4.1+)
|
|
|
|
## Build tools
|
|
|
|
When writing code (mostly for generating stuff included in release tarballs)
|
|
we use a few "build tools" and we make sure that we remain functional with
|
|
these versions:
|
|
|
|
- GNU Libtool 1.4.2
|
|
- GNU Autoconf 2.59
|
|
- GNU Automake 1.7
|
|
- GNU M4 1.4
|
|
- perl 5.8
|
|
- roffit 0.5
|
|
- cmake 3.7
|
|
|
|
Library Symbols
|
|
===============
|
|
|
|
All symbols used internally in libcurl must use a `Curl_` prefix if they are
|
|
used in more than a single file. Single-file symbols must be made static.
|
|
Public ("exported") symbols must use a `curl_` prefix. Public API functions
|
|
are marked with `CURL_EXTERN` in the public header files so that all others
|
|
can be hidden on platforms where this is possible.
|