DEPRECATE: add CMake <3.18 deprecation for April 2026 #19902
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vszakats
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Pull request overview
This PR adds a deprecation notice for CMake versions earlier than 3.18, scheduled for removal in April 2026. The change aligns with curl's ongoing effort to modernize build requirements and drop support for older tooling versions. Currently, the codebase supports CMake 3.7-3.16.
Key Changes:
- Added CMake 3.17 and earlier to the list of deprecated features in docs/DEPRECATE.md with an April 2026 removal date
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bagder
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Dec 9, 2025
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👍 We could possibly add already there that 3.18.0 was released on July 15, 2020.
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CMake 3.18 was released on 2020-07-15.
It enables using (and/or dropping workarounds) for these features:
LTO support, better performance and pkg-config support,
OBJECTtarget,-S,-B,--verbose,--installon the command-line, lib directorysupport in interface targets, target_link_options(), LINK_OPTIONS,
FetchContent,
list(PREPEND ...), unity, Ninja, fixed imported globalissues.
Ref: #18704