A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features
cclientcurlftpgopherhacktoberfesthttphttpsimapsldaplibcurllibrarymqttpop3scpsftptransfer-datatransferring-datauser-agentwebsocket
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Implement the "unity" builds as known from CMake, but for autotools. It's limited to `lib` and `src` (CMake also supports it in `tests`). Enable with: `--enable-unity` (disabled by default) Unity builds speed up builds significantly. Cygwin and Windows builds in particular, but the effect is noticeable on most systems. It also allows discovering unity issues with autotools, benefitting also CMake when building the same combination. In CI it makes turnaround times quicker. This closes build performance with CMake. autotools still lags behind because it builds shared and static libcurl in two, separate passes. CMake does it in one. Manpage compilation isn't batched, it is in CMake. After unity and test bundle support the slowest parts of the build are the configuration phase (which is effectively a tedious, non-parallel, compilation and/or linking of 300+ tiny programs. The next bottleneck is compiling individual examples and finally test servers (only slow with autotools). The autotools implementation is slightly less efficient than CMake, because 3 sources are permanently excluded while in CMake this isn't necessary and solved more efficiently while building libtests. There is also no 'unity' support for tests, making them a less efficient also. Enable it in CI for most `configure` jobs. Except in GHA/dist (though it works fine there too), to use the default config there. Also skip for the Linux AWC-LC job where it made builds time a few seconds longer (reason undiscovered.) Autotools test suite builds compared between master -> `--enable-unity`: - GHA/Linux: 32s -> 12s https://github.com/curl/curl/actions/runs/10705668823/job/29681617374 https://github.com/curl/curl/actions/runs/10742978889/job/29796766297 - GHA/macOS: 37s -> 10s https://github.com/curl/curl/actions/runs/10705668813/job/29681632885 https://github.com/curl/curl/actions/runs/10742978699/job/29796768875 - GHA/FreeBSD: 15m25 -> 10m58 (full workflow time, ~qemu) https://github.com/curl/curl/actions/runs/10705668811/job/29681607915 https://github.com/curl/curl/actions/runs/10742978937/job/29796766115 - GHA/Cygwin: 3m32 -> 1m21 https://github.com/curl/curl/actions/runs/10705668809/job/29681609965 https://github.com/curl/curl/actions/runs/10742978645/job/29796756933 - GHA/MSYS2: 2m42 -> 50s https://github.com/curl/curl/actions/runs/10705668808/job/29681621166 https://github.com/curl/curl/actions/runs/10742978662/job/29799739289 - GHA/mingw-w64: 5m32 -> 1m23 https://github.com/curl/curl/actions/runs/10705668808/job/29681628787 https://github.com/curl/curl/actions/runs/10742978662/job/29799741568 Closes #14815 |
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| .circleci | ||
| .github | ||
| CMake | ||
| docs | ||
| include | ||
| lib | ||
| LICENSES | ||
| m4 | ||
| packages | ||
| plan9 | ||
| projects | ||
| scripts | ||
| src | ||
| tests | ||
| winbuild | ||
| .dir-locals.el | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| acinclude.m4 | ||
| appveyor.sh | ||
| appveyor.yml | ||
| buildconf | ||
| buildconf.bat | ||
| CHANGES.md | ||
| CMakeLists.txt | ||
| configure.ac | ||
| COPYING | ||
| curl-config.in | ||
| Dockerfile | ||
| GIT-INFO.md | ||
| libcurl.pc.in | ||
| Makefile.am | ||
| Makefile.dist | ||
| README | ||
| README.md | ||
| RELEASE-NOTES | ||
| renovate.json | ||
| REUSE.toml | ||
| SECURITY.md | ||
Curl is a command-line tool for transferring data specified with URL syntax. Learn how to use curl by reading the manpage or everything curl.
Find out how to install curl by reading the INSTALL document.
libcurl is the library curl is using to do its job. It is readily available to be used by your software. Read the libcurl manpage to learn how.
Open Source
curl is Open Source and is distributed under an MIT-like license.
Contact
Contact us on a suitable mailing list or use GitHub issues/ pull requests/ discussions.
All contributors to the project are listed in the THANKS document.
Commercial support
For commercial support, maybe private and dedicated help with your problems or applications using (lib)curl visit the support page.
Website
Visit the curl website for the latest news and downloads.
Source code
Download the latest source from the Git server:
git clone https://github.com/curl/curl.git
Security problems
Report suspected security problems via our HackerOne page and not in public.
Notice
Curl contains pieces of source code that is Copyright (c) 1998, 1999 Kungliga Tekniska Högskolan. This notice is included here to comply with the distribution terms.
Backers
Thank you to all our backers! 🙏 Become a backer.
Sponsors
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