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cmake: Check dependencies after build option interaction#33974

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hebasto:251130-cmake-options
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cmake: Check dependencies after build option interaction#33974
hebasto wants to merge 1 commit intobitcoin:masterfrom
hebasto:251130-cmake-options

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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.

Reviews

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Type Reviewers
ACK sedited
Stale ACK BrandonOdiwuor

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Conflicts

Reviewers, this pull request conflicts with the following ones:

  • #bitcoin-core/gui/933 ([DRAFT] Introduce Qt test automation bridge and gui functional tests by johnny9)
  • #34580 (build: Add a compiler minimum version check by polespinasa)
  • #32367 (cmake: Check user-defined APPEND_*FLAGS variables early by hebasto)
  • #31723 (qa: Facilitate debugging bitcoind inside functional tests by hodlinator)
  • #31425 (RFC: Riscv bare metal CI job by sedited)

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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c1da46ecfaec3c3e040a6504182faf5f114cdbb69926757b1b10192e11919c2c  guix-build-56d0a0929d89/output/arm-linux-gnueabihf/SHA256SUMS.part
5d5e6287f0369f662526d3af08041e7544bed163c41421d8c81be97b522d0c89  guix-build-56d0a0929d89/output/arm-linux-gnueabihf/bitcoin-56d0a0929d89-arm-linux-gnueabihf-debug.tar.gz
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f1efcb20c5c4316b54b29b3cbb7b13346df2429d21cb80cf539397b879ce490e  guix-build-56d0a0929d89/output/arm64-apple-darwin/bitcoin-56d0a0929d89-arm64-apple-darwin-unsigned.tar.gz
4fb3b6f31c33b06cfa209235efa45129b4fc0b6914614f9760d697563d62e286  guix-build-56d0a0929d89/output/arm64-apple-darwin/bitcoin-56d0a0929d89-arm64-apple-darwin-unsigned.zip
f0403ed60ea3aa384c072fb669e42991336a1b0e55e469e31832a56ee39d77a3  guix-build-56d0a0929d89/output/dist-archive/bitcoin-56d0a0929d89.tar.gz
3a14924b8009db324534962b571987a5cc739e79206193bddf486af4d4b1d311  guix-build-56d0a0929d89/output/powerpc64-linux-gnu/SHA256SUMS.part
14015dd634a12d7280f1a6566ee751985b94b6fc2977dcd145d1e3e7a19becd5  guix-build-56d0a0929d89/output/powerpc64-linux-gnu/bitcoin-56d0a0929d89-powerpc64-linux-gnu-debug.tar.gz
b20eab5ad318339ef0ef68246780836a3ea0a50a9d7f9ff321082bffcbe628b8  guix-build-56d0a0929d89/output/powerpc64-linux-gnu/bitcoin-56d0a0929d89-powerpc64-linux-gnu.tar.gz
3c95edab2bf41192162392cd5fac69973974cbba4098e79da26abdc26ddf2a02  guix-build-56d0a0929d89/output/riscv64-linux-gnu/SHA256SUMS.part
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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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Re-ACK 05b92e1

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hebasto commented Feb 14, 2026

Rebased to resolve conflicts.

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hebasto commented Feb 15, 2026

My Guix build:

aarch64
24ac0893e16e7e8a1a0300c86c335c79a548a67b75835e794e53fbbf631e37d3  guix-build-00fc68fa0aa5/output/aarch64-linux-gnu/SHA256SUMS.part
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1a48b33530473a156571a47e5047381530f61810ecc9625b784e751028f6ad6b  guix-build-00fc68fa0aa5/output/arm64-apple-darwin/bitcoin-00fc68fa0aa5-arm64-apple-darwin-unsigned.tar.gz
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3d2c1e4a53cec5dec1836815ede9555d42da379321a1812ce5d338dda5b8ecbb  guix-build-00fc68fa0aa5/output/x86_64-w64-mingw32/bitcoin-00fc68fa0aa5-win64-unsigned.zip

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hebasto commented Feb 19, 2026

Rebased due to a conflict with merged #28792.

@hebasto hebasto force-pushed the 251130-cmake-options branch from b83df9f to e8142cf Compare February 20, 2026 19:20
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hebasto commented Feb 20, 2026

Rebased due to a conflict with merged #34605.

@hebasto hebasto marked this pull request as draft February 20, 2026 21:05
@hebasto hebasto marked this pull request as ready for review February 20, 2026 21:10
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Re-ACK e8142cf

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