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@hebasto hebasto commented Nov 30, 2025

At present, CMakeLists.txt interleaves configuration-option handling with dependency discovery. As a result, unnecessary checks may be performed. For example:

$ cmake -B build --preset dev-mode -DBUILD_FOR_FUZZING=ON
<snip>
-- Found PkgConfig: /usr/bin/pkg-config (found version "2.3.0")
-- Found ZeroMQ: /usr/lib64 (found suitable version "4.3.5", minimum required is "4.0.0")
-- Performing Test HAVE_USDT_H
-- Performing Test HAVE_USDT_H - Success
-- Found USDT: /usr/include
-- Found QRencode: /usr/lib64/libqrencode.so (found version "4.1.1")
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Performing Test HAVE_STDATOMIC
-- Performing Test HAVE_STDATOMIC - Success
-- Found WrapAtomic: TRUE
-- Found OpenGL: /usr/lib64/libOpenGL.so
-- Found WrapOpenGL: TRUE
-- Found WrapVulkanHeaders: /usr/include
-- Found Qt: /usr/lib64/cmake/Qt6 (found suitable version "6.10.1", minimum required is "6.2")
CMake Warning at CMakeLists.txt:206 (message):
  BUILD_FOR_FUZZING=ON will disable all other targets and force
  BUILD_FUZZ_BINARY=ON.

<snip>

This PR restructures the code to ensure that all dependencies are checked only after the final build option interaction.

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DrahtBot commented Nov 30, 2025

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/33974.

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ACK BrandonOdiwuor
Stale ACK sedited

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Conflicts

Reviewers, this pull request conflicts with the following ones:

  • #33861 (build: Bump VS minimum supported version to 18.0 by hebasto)
  • #31723 (qa: Facilitate debugging bitcoind inside functional tests by hodlinator)
  • #31507 (build: Use clang-cl to build on Windows natively by hebasto)
  • #31425 (RFC: Riscv bare metal CI job by sedited)
  • #28792 (build: Embedded ASMap [3/3]: Build binary dump header file by fjahr)

If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

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ACK 56d0a09

Guix build:

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@hebasto hebasto force-pushed the 251130-cmake-options branch from 56d0a09 to 05b92e1 Compare December 5, 2025 12:13
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hebasto commented Dec 5, 2025

@sedited @fanquake

Thank you for the review! Your feedback has been addressed.

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Tested ACK 05b92e1

Confirmed that dependency checks now occur after build option resolution, eliminating unnecessary scans (e.g., ZeroMQ, QRencode, QT) in specialized builds like fuzzing.

Tested on Ubuntu 24.04 aarch64 cmake version 3.28.3

Tested on master

$ cmake -B build --preset dev-mode -DBUILD_FOR_FUZZING=ON
Screenshot 2025-12-21 at 17 09 38

Tested on 05b92e1

$ cmake -B build --preset dev-mode -DBUILD_FOR_FUZZING=ON
Screenshot 2025-12-21 at 17 10 23

@DrahtBot DrahtBot requested a review from sedited December 21, 2025 14:25
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