depends: Update minimum required CMake version #31300

hebasto commented at 10:22 PM on November 16, 2024: member

From the CMake 3.31 Release Notes:

Compatibility with versions of CMake older than 3.10 is now deprecated and will be removed from a future version.

This PR updates the cmake_minimum_required command across all packages in depends to ensure the minimum version is not set below 3.10.

Without this change, CMake 3.31 emits a warning:

$ make -C depends freetype
make: Entering directory '/home/hebasto/git/bitcoin/depends'
Extracting freetype...
/home/hebasto/git/bitcoin/depends/sources/freetype-2.11.0.tar.xz: OK
Preprocessing freetype...
Configuring freetype...
CMake Deprecation Warning at CMakeLists.txt:100 (cmake_minimum_required):
  Compatibility with CMake < 3.10 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.


-- The C compiler identification is GNU 13.2.0
< snip >

depends: Update minimum required CMake version

Compatibility with versions of CMake older than 3.10 is now deprecated
and will be removed from a future version.

See: https://cmake.org/cmake/help/v3.31/release/3.31.html

b5a12350fa

hebasto added the label Build system on Nov 16, 2024

DrahtBot commented at 10:22 PM on November 16, 2024: contributor

The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

Code Coverage & Benchmarks

For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/31300.

Reviews

See the guideline for information on the review process. A summary of reviews will appear here.

hebasto commented at 9:19 AM on November 17, 2024: member

My Guix build:

x86_64
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maflcko commented at 10:52 AM on November 17, 2024: member

Is there a reason to pick 3.10, when someone couldn't compile Bitcoin Core later on anyway with that version? See https://github.com/bitcoin/bitcoin/blob/ccc2d3abcd39c64a78e366f3e4794de729155e9e/CMakeLists.txt#L10

Also, according to #31299 (comment) 3.13 may be required anyway?

TheCharlatan commented at 10:00 PM on November 17, 2024: contributor

The selected versions in the patches seem random, why not pick the same value for all of them? Is there also precedent for us making patches just to silence warnings?

hebasto commented at 10:08 PM on November 17, 2024: member

Is there also precedent for us making patches just to silence warnings?

depends/patches/qrencode/cmake_fixups.patch?

This PR is not about silencing warnings but ensuring that deprecated CMake versions are not used.

in depends/patches/freetype/cmake_minimum.patch:22 in b5a12350fa

  17 | +-  cmake_policy(SET CMP0063 NEW)
  18 | +-
  19 | +-  # Support new IN_LIST if() operator.
  20 | +-  cmake_policy(SET CMP0057 NEW)
  21 | +-endif ()
  22 | ++cmake_minimum_required(VERSION 3.16)

maflcko commented at 10:20 AM on November 18, 2024:

Why not submit this upstream and update? See also https://gitlab.freedesktop.org/freetype/freetype/-/merge_requests/143/diffs

fanquake commented at 1:56 PM on November 19, 2024: member

The selected versions in the patches seem random, why not pick the same value for all of them?

Yea. If anything, just consolidate to the same minimum required version as Core.

hebasto commented at 11:24 AM on November 23, 2024: member

This change may introduce new behaviour due to new CMake policies across the span of CMake versions up to the updated one. This would require additional review effort, which does not seem justified for this repository.

Closing.

hebasto closed this on Nov 23, 2024

bitcoin locked this on Nov 23, 2025