Here are some benefits of using CMake in the Bitcoin Core project:

• an opportunity to drop the build_msvc subdirectory from the repo altogether (being a cross-platform tool, CMake is able to create input files for a wide range of build systems, including Unix Makefiles and Visual Studio project files)
• no hacks required to build dlls for Windows, even with DEBUG=1 (see #19772)
• better maintainability (say bye to global variables)
• easy integration with Qt 5
• easy integration with Qt 6 in the nearest future (also see bitcoin/bitcoin#24798 and bitcoin/bitcoin#25191)

More Qt-specific details see below.

Also there is a non-technical/social benefit. Over time, the Autotools community shrinks, but CMake community grows. New contributors, who join this project in the future, will readily support a CMake-based system rather an Autotools-based one.

Native building has been tested on the following OSes:

• Ubuntu 22.04 (x86_64, aarch64~, backward compatible with Ubuntu Bionic 18.04 using adjusted invocation~)
• macOS Monterey (x86_64, arm64)
• FreeBSD 12.3
• OpenBSD 7.1

cmake -S . -B build
cd build
make
make check
make install  # optional

Native building on Windows (MSVC + vcpkg)

Dependency packages are provided by the vcpkg package manager ("Mandatory ASLR" in Windows Security must be disabled to install qt5-* packages):

vcpkg --triplet=x64-windows-static install pkgconf boost-multi-index boost-process boost-signals2 boost-test libevent berkeleydb sqlite3 miniupnpc zeromq qt5-base qt5-tools

To build on Windows with Visual Studio, a proper generator must be specified for a new build tree. The following example assumes using of "Developer Command Prompt for VS 2022" and CMake v3.21+.

cmake -G "Visual Studio 17 2022" -A x64 -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-static -S . -B build
cmake --build build --config Release

HINT. To leverage Multi-ToolTask and use <N> CPU cores, run

cmake --build build --config Release -j <N> -- /p:CL_MPcount=<N>

Cross building for Windows on Ubuntu 22.04

make -C depends HOST=x86_64-w64-mingw32
cmake --toolchain depends/x86_64-w64-mingw32/share/toolchain.cmake -S . -B build
cmake --build build

Cross building for Windows on Ubuntu 22.04 with DEBUG=1, see #19772

make -C depends HOST=x86_64-w64-mingw32 DEBUG=1
cmake --toolchain depends/x86_64-w64-mingw32/share/toolchain.cmake -S . -B build
cmake --build build

Cross building for macOS (Intel) on Ubuntu 22.04

make -C depends HOST=x86_64-apple-darwin
cmake --toolchain depends/x86_64-apple-darwin/share/toolchain.cmake -S . -B build
cmake --build build

Cross building for macOS (Apple Silicon) on Ubuntu 22.04

make -C depends HOST=arm64-apple-darwin
cmake --toolchain depends/arm64-apple-darwin/share/toolchain.cmake -S . -B build
cmake --build build

Cross building for Android using NDK r23 LTS on Ubuntu 22.04

export ANDROID_SDK=/home/hebasto/Android/Sdk
export ANDROID_NDK=${ANDROID_SDK}/ndk/23.2.8568313
export ANDROID_API_LEVEL=28
make -C depends ANDROID_TOOLCHAIN_BIN=${ANDROID_NDK}/toolchains/llvm/prebuilt/linux-x86_64/bin/ HOST=aarch64-linux-android
cmake --toolchain depends/aarch64-linux-android/share/toolchain.cmake -S . -B build
cmake --build build

NOTE: Building in the source tree is not supported.

Functional Tests

Functional tests can be run in exactly the same way as when building with Autotools out of the source tree, i.e.:

./build/test/functional/test_runner.py

Guix builds

Cirrus CI -- 16 of 16

• lint [jammy]
• tidy [jammy]
• Win64 native [vs2022]
• ARM [unit tests, no functional tests] [bullseye]
• Win64 [unit tests, no gui tests, no boost::process, no functional tests] [jammy]
• 32-bit + dash [gui] [CentOS 8]
• [previous releases, uses qt5 dev package and some depends packages, DEBUG] [unsigned char] [buster]
• [TSan, depends, gui] [jammy]
• [MSan, depends] [focal]
• [ASan + LSan + UBSan + integer, no depends, USDT] [jammy]
• [fuzzer,address,undefined,integer, no depends] [jammy]
• [multiprocess, i686, DEBUG] [focal]
• [no wallet, libbitcoinkernel] [buster]
• macOS 10.15 [gui, no tests] [focal]
• macOS 13 native arm64 [gui, sqlite only] [no depends]
• ARM64 Android APK [jammy]

Additional notes.

1. There is a branch/PR in my repo which includes Qt 6 integration and CMake-specific CI tasks.
2. A similar PR has been open in https://github.com/bitcoin-core/secp256k1.

The plan is to have it in the repo shortly after branching 24.x off, and make CMake-based build system a drop-in replacement of Autotools-based one during the next ~2 or 3~ release cycle~s~.

Qt-specific details

What happened before?

• https://www.qt.io/blog/qt-6-build-system:

CMake is the build system for Qt 6

• https://www.qt.io/blog/qt-and-cmake-the-past-the-present-and-the-future:

We made a big decision to start using CMake to build Qt 6 one and a half years ago.

• https://doc.qt.io/qt-6/qt6-buildsystem.html:

The Qt 5 build system was built on top of qmake. In Qt 6, we ported the build system to CMake.

It is important to note that CMake has extensive support for Qt, including Qt-specific tools such as MOC, RCC, UIC.

Why Qt 6 build system does matter if the Bitcoin Core GUI uses Qt 5?

For release builds we use Qt 5.15.5 LTS, the latest Qt 5 version available under a free-software license.

For dynamic linking users can use Qt 5.11.3+, which allows them to use packages provided in Debian Buster and Ubuntu Focal.

On the other hand, Qt 6 packages are available in the following systems/package managers:

• Ubuntu Jammy+
• Debian Bullseye+
• Fedora 35+
• Homebrew

As long as Qt GUI is a part of Bitcoin Core, it is inevitable to embrace Qt 6 support, sooner or later.

Can we just adjust our current build system to handle Qt 6?

The main problem with integration of Qt 6 into the current build system is lacking of pkg-config *.pc files for static builds (please note that a patch from QTBUG-86080 works for non-static builds only).

To handle Qt 6 with our current build system we need to:

• patch Qt, which looks like a non-trivial task, or
• apply some nasty hacks to our own build system
• keep in our repo the required *.pc files

All approaches imply maintaining burden for a long time. And last two are pretty ugly :)

Autotools -- CMake Feature Parity Table

Autotool-based build system (AT) features being listed according to the ./configure --help output.

IRC meeting discussions:

• https://bitcoin-irc.chaincode.com/bitcoin-core-dev/2022-08-18#844420;

Great to see that this PR is in the main repo now! 🚀

I retested on OpenBSD 7.1 with the instructions from the PR description and unfortunately still have a BDB issue (similar to https://github.com/hebasto/bitcoin/pull/3#issuecomment-1175647461). The detection in the beginning detects that the installed BerkeleyDB version is too old (which is true) and disables legacy wallet support:

-- Found BerkeleyDB: /usr/include (Required is at least version "4.8")
CMake Warning at cmake/optional.cmake:69 (message):
  Found Berkeley DB (BDB) older than 4.8, disabling.

  Passing "-DWITH_BDB=no" will suppress this warning.

...

Configure summary
=================
Build type ......................... RelHardened
Preprocessor defined macros:
CXX: /usr/local/bin/ccache /usr/bin/c++
Compile options:
Utility binaries:
  bitcoin-cli ...................... ON
  bitcoin-tx ....................... ON
  bitcoin-util ..................... ON
Wallet functionality ............... yes
  SQLite, descriptor wallets ....... yes
  Berkeley DB, legacy wallets ...... no
  wallet tool ...................... ON
Optional packages:
  GUI .............................. Qt5
  QR code (GUI) .................... yes
  external signer .................. no
  NAT-PMP .......................... no
  UPNP ............................. no
  ZeroMQ ........................... yes
  USDT tracing ..................... no
  experimental syscall sandbox ..... no

Still in the course of compiling the wallet <db_cxx.h> is getting included (which is in turn included by src/wallet/bdb.h):

[ 28%] Building CXX object src/wallet/CMakeFiles/bitcoin_wallet.dir/walletdb.cpp.o
In file included from /home/honey/bitcoin_prrev/src/wallet/walletdb.cpp:18:
/home/honey/bitcoin_prrev/src/wallet/bdb.h:27:10: fatal error: 'db_cxx.h' file not found
#include <db_cxx.h>
         ^~~~~~~~~~
1 error generated.

It seems that USE_BDB is sill set for some reason, though the detection should have disabled it?

concept ack

Updated 485bd54f26c061ff3aa21587f8d8fd6ca86b5980 -> 1d09ef577b2b5e6d13b83f5241bad037a0a8f7b8 (pr25797.01 -> pr25797.02):

• fixed Berkeley DB detection on OpenBSD.
• improved all cmake/modules/Find<Package>.cmake modules. @theStack

I retested on OpenBSD 7.1 with the instructions from the PR description and unfortunately still have a BDB issue

Thank you for sorrow testing. The issue should be fixed now.

@theStack

I retested on OpenBSD 7.1 with the instructions from the PR description and unfortunately still have a BDB issue

Thank you for sorrow testing. The issue should be fixed now.

Retested again (commit 1d09ef577b2b5e6d13b83f5241bad037a0a8f7b8) on OpenBSD 7.1 with the configuration as shown in #25797#pullrequestreview-1064441935, now the build was successful ✅ 🍻 . The following binaries were emitted: bitcoind, bitcoin-cli, bitcoin-tx, bitcoin-util, bitcoin-wallet, bitcoin-qt and leveldbutil (is this last one needed? IIRC I never saw it in the course of building with autotools).

Also ran the functional tests via ./build/test/functional/test_runner.py, everything passed as expected. Couldn't find the test_bitcoin binary though, I'm assuming that unit-test build support with CMake is still under construction?

Updated 1d09ef577b2b5e6d13b83f5241bad037a0a8f7b8 -> 66c4ce440021004149779bb74207ce0c8bc93b2f (pr25797.02 -> pr25797.03):

• the leveldbutil target removed from "all targets" being built by default; thanks to @theStack for pointing it out @theStack

I'm assuming that unit-test build support with CMake is still under construction?

It is, but not as a part of this PR. My intention is to keep the latter more or less digestible for reviewers.

Concept NACK. Our autotools build system is a mess, but this doesn't appear to significantly improve it. I don't think the benefits are worth the costs.

(I realise this PR doesn't remove autotools, but AIUI that's the eventual intention.)

an opportunity to drop the build_msvc subdirectory from the repo altogether

I don't see why CMake changes the situation around build_msvc. We could drop it today and tell Windows builders to use autotools just as well.

Also there is a non-technical/social benefit. Over time, the Autotools community shrinks, but CMake community grows. New contributors, who join this project in the future, will readily support a CMake-based system rather an Autotools-based one.

Do you have evidence of this? Autotools is fairly standard, and mostly just standard sh and make stuff (and m4, but that's admittedly more of a downside). CMake breaks from the norm, and requires a domain-specific language.

Updated 66c4ce440021004149779bb74207ce0c8bc93b2f -> e098ba80b6ec0debc62c32c65b72a518b126ed54 (pr25797.03 -> pr25797.04):

• in-subtree bugfix been replaced with out-subtree workaround
• fixed white spaces

All changes above made the linter CI task happy now :tiger2:

an opportunity to drop the build_msvc subdirectory from the repo altogether

I don't see why CMake changes the situation around build_msvc. We could drop it today and tell Windows builders to use autotools just as well.

You are talking about "to build on Windows". But the idea is "to build with MSVC". Being a cross-platform tool, CMake is able to create input files for a wide range of build systems, including Unix Makefiles and Visual Studio project files. @sipsorcery What do you think about this stuff?

Also there is a non-technical/social benefit. Over time, the Autotools community shrinks, but CMake community grows. New contributors, who join this project in the future, will readily support a CMake-based system rather an Autotools-based one.

Do you have evidence of this?

I do. There are open-source projects which have dropped Autotools, and there are no ones which do the opposite. Also we could ask people who graduated CS recently whether their curriculums encompassed Autotools and/or CMake (not an evidence, rather a hint).

Autotools is fairly standard, and mostly just standard sh and make stuff (and m4, but that's admittedly more of a downside).

Moving "Autotools --> CMake" is very similar to "shell --> Python" which we have done recently.

CMake breaks from the norm

Which "the norm"?

and requires a domain-specific language.

Using a domain-specific language which serves its purpose much better than a general macro language is a benefit for reviewing and maintaining.

You are talking about "to build on Windows". But the idea is "to build with MSVC". Being a cross-platform tool, CMake is able to create input files for a wide range of build systems, including Unix Makefiles and Visual Studio project files.

@sipsorcery What do you think about this stuff?

The Visual Studio project files produced by CMake aren't as clean as the hand rolled ones but in my experience they still build well (note the vcpkg dependecies generally use cmake).

IMHO it's worth having less clean VS project files if the eventual goal is to have a single build system.

Concept ACK.

@luke-jr

Concept NACK. Our autotools build system is a mess, but this doesn't appear to significantly improve it. I don't think the benefits are worth the costs.

And this mess is going to get bigger:

• we are about introducing the 4th hack to the Libtool
• more hacks are required to bring Qt 6 support

As you are a developer who is involved into the GUI development, could you share your vision of Qt 6 integration without migration to CMake?

@dongcarl @fanquake @ryanofsky @theuni

Your conceptual assessments of this PR will be much appreciated.

Also we could ask people who graduated CS recently whether their curriculums encompassed Autotools and/or CMake (not an evidence, rather a hint).

We handmade our Makefiles...

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Conflicts

Reviewers, this pull request conflicts with the following ones:

• #27771 (ci: Use docker image cache for "Win64 native [vs2022]" task by hebasto)
• #27759 (Fix #includes in src/wallet by hebasto)
• #27737 (ci: compile Clang and compiler-rt in msan jobs by fanquake)
• #27724 (build: disable boost multi index safe mode in debug mode by willcl-ark)
• #27710 (ci, iwyu: Update mappings by hebasto)
• #27676 (macOS: Bump minimum required runtime version and prepare for building with upstream LLVM by theuni)
• #27099 (build: produce a .zip for macOS distribution by fanquake)
• #25972 (build: no-longer disable WARN_CXXFLAGS when CXXFLAGS is set by fanquake)
• #21778 (build: LLVM 15 & LLD based macOS toolchain by fanquake)

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.

You are talking about "to build on Windows". But the idea is "to build with MSVC". Being a cross-platform tool, CMake is able to create input files for a wide range of build systems, including Unix Makefiles and Visual Studio project files.

autotools can be used with the MSVC compiler

There are open-source projects which have dropped Autotools, and there are no ones which do the opposite.

"No ones"? There are lots which adopt autotools. Otherwise it wouldn't even exist...

Also we could ask people who graduated CS recently whether their curriculums encompassed Autotools and/or CMake

People to ask would be experienced open source developers, not novices who got scammed by colleges.

Which "the norm"?

Most open source software uses autotools.

As you are a developer who is involved into the GUI development, could you share your vision of Qt 6 integration without migration to CMake?

Seems easy enough to just do it the same as Qt 5 already is? pkg-config support was fixed in Qt 6.2.5.

There are open-source projects which have dropped Autotools, and there are no ones which do the opposite.

"No ones"? There are lots which adopt autotools. Otherwise it wouldn't even exist...

I mean, there are no projects which moved from non-Autotools to Autotools recent decade.

pkg-config support was fixed in Qt 6.2.5.

Not for static builds:

Although it has some limitations, with qt_internal_add_qml_module if it specifies non-public deps these won't be listed and with non-Qt requirements, notably in static builds, not being appended to the PkgConfig file.

Static builds are abnormal and only need to be supported for depends-based builds, where we can trivially patch it.

Static builds are abnormal and only need to be supported for depends-based builds...

"abnormal"? We deliver users static builds.

we can trivially patch it

I doubt about "trivially". Anyway, your patch for Qt code will be much appreciated.

dongcarlvfanquake ryanofsky theuni Your conceptual assessments of this PR will be much appreciated.

I am a Concept ~0/ACK for CMake.

However I think if we are going to break every existing piece of Bitcoin Core related build infrastracture (build scripts, docker files, downstream projects, package managers etc), as well as obselete (external) build guides & documentation, we should be able to enumerate some more benefits to doing so.

Here are some benefits of using CMake in the Bitcoin Core project:

Looking at this list, there's nothing interesting here for anyone that doesn't care about the GUI, or Windows DEBUG depends builds; and given that this is the group which will more-than-likely be most impacted by this change, i.e compiling bitcoind + utils on Linux, we should be able to better justify a migration. Even starting with some rationale from something like "Why CMake?".

The plan is to have it in the repo shortly after branching 24.x off, and make CMake-based build system a drop-in replacement of Autotools-based one during the next 2 or 3 release cycles.

Concept NACK on any approach that has as maintaining multiple build systems over multiple, or even a single release. That will be a maintainability / developer nightmare. If we are going to switch, we should just switch. CMake in, Autotools out, over a short period, ideally just after a branch off, so there is plenty of time for changes to settle and issues to be fixed before the next release.

Looking at this list, there's nothing interesting here for anyone that doesn't care about the GUI...

The GUI is a part of the Bitcoin Core project. Not caring about any part of the project won't be helpful for it.

Concept ACK e098ba80b6ec0debc62c32c65b72a518b126ed54

I'm testing on macOS 12.5 M1 MacBook Pro and running into errors. It's possible this is an issue with my system, but I exhausted any possibilities that I could think of.

Are there additional setup steps to proceed these steps during your macOS testing?

$ cmake -S . -B build

-- Found Qt, version 5.15.5


Configure summary
=================
Build type ......................... RelHardened
Preprocessor defined macros: MAC_OSX;OBJC_OLD_DISPATCH_PROTOTYPES=0
CXX: /opt/homebrew/bin/ccache /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
Compile options:
Utility binaries:
  bitcoin-cli ...................... ON
  bitcoin-tx ....................... ON
  bitcoin-util ..................... ON
Wallet functionality ............... yes
  SQLite, descriptor wallets ....... yes
  Berkeley DB, legacy wallets ...... yes
  wallet tool ...................... ON
Optional packages:
  GUI .............................. Qt5
  QR code (GUI) .................... yes
  external signer .................. no
  NAT-PMP .......................... yes
  UPNP ............................. yes
  ZeroMQ ........................... yes
  USDT tracing ..................... no
  experimental syscall sandbox ..... no


-- Configuring done
-- Generating done
-- Build files have been written to: /Users/adam2k/Documents/bitcoin/build
 adam2k@Adams-MacBook-Pro  ~/Documents/bitcoin   220807-cmake ± 
 adam2k@Adams-MacBook-Pro  ~/Documents/bitcoin   220807-cmake ±  cmake --build build
Consolidate compiler generated dependencies of target univalue
[  0%] Building CXX object src/univalue/CMakeFiles/univalue.dir/lib/univalue.cpp.o
error: option 'cf-protection=return' cannot be specified on this target
error: option 'cf-protection=branch' cannot be specified on this target
2 errors generated.
make[2]: *** [src/univalue/CMakeFiles/univalue.dir/lib/univalue.cpp.o] Error 1
make[1]: *** [src/univalue/CMakeFiles/univalue.dir/all] Error 2
make: *** [all] Error 2

There seems to be long running resistance to this in this repo and continued resistance expressed in the comments of this PR.

Does libsecp256k1 (potentially, certainly seems less resistance there currently) adding CMake support have any impact on this discussion? A case of seeing if it gets merged in libsecp256k1, seeing if there are any problems with it, contributors getting comfortable with it etc? Or are they entirely separate discussions? i.e. libsecp256k1 could merge in CMake support, it could work fine but it would have no impact on the discussion here? Also would there be opposition to libsecp256k1 maintaining a different build system to this main Core repo or is that a non-issue?

I've updated the PR description with the following Qt-specific details.

What happened before?

• https://www.qt.io/blog/qt-6-build-system:

CMake is the build system for Qt 6

• https://www.qt.io/blog/qt-and-cmake-the-past-the-present-and-the-future:

We made a big decision to start using CMake to build Qt 6 one and a half years ago.

• https://doc.qt.io/qt-6/qt6-buildsystem.html:

The Qt 5 build system was built on top of qmake. In Qt 6, we ported the build system to CMake.

It is important to note that CMake has extensive support for Qt, including Qt-specific tools such as MOC, RCC, UIC.

Why Qt 6 build system does matter if the Bitcoin Core GUI uses Qt 5?

For release builds we use Qt 5.15.5 LTS, the latest Qt 5 version available under a free-software license.

For dynamic linking users can use Qt 5.11.3+, which allows them to use packages provided in Debian Buster and Ubuntu Focal.

On the other hand, Qt 6 packages are available in the following systems/package managers:

• Ubuntu Jammy+
• Debian Bullseye+
• Fedora 35+
• Homebrew

As long as Qt GUI is a part of Bitcoin Core, it is inevitable to embrace Qt 6 support, sooner or later.

Can we just adjust our current build system to handle Qt 6?

The main problem with integration of Qt 6 into the current build system is lacking of pkg-config *.pc files for static builds (please note that a patch from QTBUG-86080 works for non-static builds only).

To handle Qt 6 with our current build system we need to:

• patch Qt, which looks like a non-trivial task, or
• apply some nasty hacks to our own build system
• keep in our repo the required *.pc files
• check Qt libraries manually

All approaches imply maintaining burden for a long time. And last three are pretty ugly :)

Updated e098ba80b6ec0debc62c32c65b72a518b126ed54 -> 88d797f926cb0d874a30aa732dcc0221f78b007a (pr25797.04 -> pr25797.05):

• fixed a bug pointed out in #25797 (comment)
• small improvements regarding advanced variables @adam2k

I'm testing on macOS 12.5 M1 MacBook Pro and running into errors.

Thank you for testing! Should be fixed now :tiger2:

Updated e098ba8 -> 88d797f (pr25797.04 -> pr25797.05):

• fixed a bug pointed out in build: Add CMake-based build system [#25797](/bitcoin-bitcoin/25797/) (comment)
• small improvements regarding advanced variables

@adam2k

I'm testing on macOS 12.5 M1 MacBook Pro and running into errors.

Thank you for testing! Should be fixed now 🐅

Concept ACK 88d797f926cb0d874a30aa732dcc0221f78b007a

Again, I'm testing on macOS 12.5 M1 MacBook Pro and the previous errors seem to be resolved.

$ cmake -S . -B build
-- Performing Test HAS_CXX_-pipe_FLAG
-- Performing Test HAS_CXX_-pipe_FLAG - Success
-- Performing Test HAS_CXX_-O2_FLAG
-- Performing Test HAS_CXX_-O2_FLAG - Success
-- Performing Test HAS_CXX_-g_FLAG
-- Performing Test HAS_CXX_-g_FLAG - Success
-- Performing Test HAS_CXX_-Wstack-protector_FLAG
-- Performing Test HAS_CXX_-Wstack-protector_FLAG - Success
-- Performing Test HAS_CXX_-fstack-protector-all_FLAG
-- Performing Test HAS_CXX_-fstack-protector-all_FLAG - Success
-- Performing Test HAS_CXX_-fcf-protection=full_FLAG
-- Performing Test HAS_CXX_-fcf-protection=full_FLAG - Failed
-- Found Qt, version 5.15.5


Configure summary
=================
Build type ......................... RelHardened
Preprocessor defined macros ........ MAC_OSX;OBJC_OLD_DISPATCH_PROTOTYPES=0
C++ compiler ....................... /opt/homebrew/bin/ccache /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
Compile options ....................
Utility binaries:
  bitcoin-cli ...................... ON
  bitcoin-tx ....................... ON
  bitcoin-util ..................... ON
Wallet functionality ............... yes
  SQLite, descriptor wallets ....... yes
  Berkeley DB, legacy wallets ...... yes
  wallet tool ...................... ON
Optional packages:
  GUI .............................. Qt5
  QR code (GUI) .................... yes
  external signer .................. no
  NAT-PMP .......................... yes
  UPNP ............................. yes
  ZeroMQ ........................... yes
  USDT tracing ..................... no
  experimental syscall sandbox ..... no


-- Configuring done
-- Generating done
-- Build files have been written to: /Users/adam2k/Documents/bitcoin/build

Although, I am running into errors during the second step in the process when I get to the Linking CXX executable bitcoin-qt. I added the -v to gather more debug logs.

$ cmake --build build -v
...
Consolidate compiler generated dependencies of target bitcoin-qt
/Applications/Xcode.app/Contents/Developer/usr/bin/make  -f src/qt/CMakeFiles/bitcoin-qt.dir/build.make src/qt/CMakeFiles/bitcoin-qt.dir/build
[ 98%] Linking CXX executable bitcoin-qt
cd /Users/adam2k/Documents/bitcoin/build/src/qt && /opt/homebrew/Cellar/cmake/3.24.0/bin/cmake -E cmake_link_script CMakeFiles/bitcoin-qt.dir/link.txt --verbose=1
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -pipe -O2 -g -Wstack-protector -fstack-protector-all -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.3.sdk -Wl,-search_paths_first -Wl,-headerpad_max_install_names -L/opt/homebrew/opt/llvm/lib "CMakeFiles/bitcoin-qt.dir/bitcoin-qt_autogen/mocs_compilation.cpp.o" "CMakeFiles/bitcoin-qt.dir/main.cpp.o" "CMakeFiles/bitcoin-qt.dir/__/init/bitcoin-qt.cpp.o" -o bitcoin-qt -F/opt/homebrew/opt/qt@5/lib  -Wl,-headerpad_max_install_names libbitcoinqt.a ../libbitcoin_node.a ../libbitcoin_common.a ../libbitcoin_consensus.a ../util/libbitcoin_util.a ../crypto/libbitcoin_crypto.a /opt/homebrew/opt/qt@5/lib/QtWidgets.framework/QtWidgets /opt/homebrew/opt/qt@5/lib/QtGui.framework/QtGui ../librpc_client.a /opt/homebrew/Cellar/qrencode/4.1.1/lib/libqrencode.dylib ../wallet/libbitcoin_wallet.a ../libbitcoin_common.a /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.3.sdk/usr/lib/libsqlite3.tbd /opt/homebrew/opt/qt@5/lib/QtNetwork.framework/QtNetwork /opt/homebrew/opt/qt@5/lib/QtCore.framework/QtCore /opt/homebrew/opt/libnatpmp/lib/libnatpmp.dylib /opt/homebrew/lib/libminiupnpc.dylib /opt/homebrew/opt/berkeley-db@4/lib/libdb_cxx-4.8.dylib ../../libminisketch.a /opt/homebrew/Cellar/libevent/2.1.12/lib/libevent_pthreads.dylib ../zmq/libbitcoin_zmq.a ../leveldb/libleveldb.a ../crc32c/libcrc32c.a /opt/homebrew/Cellar/zeromq/4.3.4/lib/libzmq.dylib ../crypto/libbitcoin_crypto.a ../../libsecp256k1.a ../univalue/libunivalue.a -Wl,-headerpad_max_install_names /opt/homebrew/Cellar/libevent/2.1.12/lib/libevent.dylib
Undefined symbols for architecture arm64:
  "_NSClassFromString", referenced from:
      MacNotificationHandler::hasUserNotificationCenterSupport() in libbitcoinqt.a(macnotificationhandler.mm.o)
  "_OBJC_CLASS_$_NSApplication", referenced from:
      objc-class-ref in libbitcoinqt.a(macdockiconhandler.mm.o)
  "_OBJC_CLASS_$_NSBundle", referenced from:
      objc-class-ref in libbitcoinqt.a(macnotificationhandler.mm.o)
      __OBJC_$_CATEGORY_NSBundle_$_returnCorrectIdentifier in libbitcoinqt.a(macnotificationhandler.mm.o)
  "_OBJC_CLASS_$_NSProcessInfo", referenced from:
      objc-class-ref in libbitcoinqt.a(macos_appnap.mm.o)
  "_OBJC_CLASS_$_NSUserNotification", referenced from:
      objc-class-ref in libbitcoinqt.a(macnotificationhandler.mm.o)
  "_OBJC_CLASS_$_NSUserNotificationCenter", referenced from:
      objc-class-ref in libbitcoinqt.a(macnotificationhandler.mm.o)
  "___CFConstantStringClassReference", referenced from:
      CFString in libbitcoinqt.a(macos_appnap.mm.o)
      CFString in libbitcoinqt.a(macnotificationhandler.mm.o)
      CFString in libbitcoinqt.a(macnotificationhandler.mm.o)
  "_class_getInstanceMethod", referenced from:
      MacNotificationHandler::instance() in libbitcoinqt.a(macnotificationhandler.mm.o)
  "_class_replaceMethod", referenced from:
      setupDockClickHandler() in libbitcoinqt.a(macdockiconhandler.mm.o)
  "_method_exchangeImplementations", referenced from:
      MacNotificationHandler::instance() in libbitcoinqt.a(macnotificationhandler.mm.o)
  "_objc_alloc_init", referenced from:
      MacNotificationHandler::showNotification(QString const&, QString const&) in libbitcoinqt.a(macnotificationhandler.mm.o)
  "_objc_autoreleasePoolPop", referenced from:
      CAppNapInhibitor::CAppNapImpl::disableAppNap() in libbitcoinqt.a(macos_appnap.mm.o)
      CAppNapInhibitor::CAppNapImpl::enableAppNap() in libbitcoinqt.a(macos_appnap.mm.o)
  "_objc_autoreleasePoolPush", referenced from:
      CAppNapInhibitor::CAppNapImpl::disableAppNap() in libbitcoinqt.a(macos_appnap.mm.o)
      CAppNapInhibitor::CAppNapImpl::enableAppNap() in libbitcoinqt.a(macos_appnap.mm.o)
  "_objc_getClass", referenced from:
      MacNotificationHandler::instance() in libbitcoinqt.a(macnotificationhandler.mm.o)
  "_objc_msgSend", referenced from:
      setupDockClickHandler() in libbitcoinqt.a(macdockiconhandler.mm.o)
      ForceActivation() in libbitcoinqt.a(macdockiconhandler.mm.o)
      CAppNapInhibitor::CAppNapImpl::disableAppNap() in libbitcoinqt.a(macos_appnap.mm.o)
      CAppNapInhibitor::CAppNapImpl::enableAppNap() in libbitcoinqt.a(macos_appnap.mm.o)
      -[NSBundle(returnCorrectIdentifier) __bundleIdentifier] in libbitcoinqt.a(macnotificationhandler.mm.o)
      MacNotificationHandler::showNotification(QString const&, QString const&) in libbitcoinqt.a(macnotificationhandler.mm.o)
  "_objc_opt_class", referenced from:
      setupDockClickHandler() in libbitcoinqt.a(macdockiconhandler.mm.o)
  "_objc_opt_respondsToSelector", referenced from:
      CAppNapInhibitor::CAppNapImpl::disableAppNap() in libbitcoinqt.a(macos_appnap.mm.o)
      CAppNapInhibitor::CAppNapImpl::enableAppNap() in libbitcoinqt.a(macos_appnap.mm.o)
  "_objc_release", referenced from:
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      MacNotificationHandler::showNotification(QString const&, QString const&) in libbitcoinqt.a(macnotificationhandler.mm.o)
  "_objc_retain", referenced from:
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  "_sel_registerName", referenced from:
      setupDockClickHandler() in libbitcoinqt.a(macdockiconhandler.mm.o)
ld: symbol(s) not found for architecture arm64
clang-14: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [src/qt/bitcoin-qt] Error 1
make[1]: *** [src/qt/CMakeFiles/bitcoin-qt.dir/all] Error 2
make: *** [all] Error 2

Updated 88d797f926cb0d874a30aa732dcc0221f78b007a -> 6e1dcc2ae5096dde327b71efb6bfa0bf120227e5 (pr25797.05 -> pr25797.06):

• rebased on top of the #25836
• fixed native building on Windows (MSVC + vcpkg). No longer needed to pre-build Qt :tiger2:

Instructions for native building on Windows (MSVC + vcpkg) added to the PR description.

cc @sipsorcery

@hebasto Could you give us an idea of the diff between the new CMake and the old autotools build systems from a user's perspective? Have we achieved feature-parity yet?

@dongcarl

Could you give us an idea of the diff between the new CMake and the old autotools build systems from a user's perspective?

1. The main difference is a directory structure. While the current Autotools-based build system (AT) supports out-of-source builds, most users make in-source builds. The new CMake-based build system (CM) does not support in-source builds. I consider this as a benefit. As a consequence, there is no make distclean in CM.

2. Most of AT configure options are mapped to CM cache variable, for example:

• --with-daemon --> -DBUILD_DAEMON
• --enable-zmq --> -DWITH_ZMQ

3. Some of AT configure options are implemented as custom build types in CM, for example:

• --enable-hardening --> -DCMAKE_BUILD_TYPE=RelHardened

4. User provided CC, CXX, CFLAGS, CXXFLAGS, LDFLAGS are supported by CM perfectly out of the box.

5. Integration with our depends build subsystem has been implemented already:

• CONFIG_SITE=$PWD/depends/<HOST>/share/config.site --> --toolchain depends/<HOST>/share/toolchain.cmake

6. With CM users are able to use the same build system natively on a wider range of platforms, e.g., on Windows with MSVC.

7. With CM the GUI users get Qt 6 support finally :tiger2:

Have we achieved feature-parity yet?

Not in this PR, to keep it in reviewable state. The full feature-parity is achievable with a couple follow ups.

If I perform a depends build with NO_QT=1 NO_WALLET=1 NO_ZMQ=1 options. Cmake is warning about these packages being missing:

-- Could NOT find QT (missing: QT_DIR)
CMake Warning at cmake/optional_qt.cmake:60 (message):
  Qt not found, disabling.

  To skip this warning check, use "-DWITH_GUI=no".

Call Stack (most recent call first):
  CMakeLists.txt:181 (include)

-- Could NOT find BerkeleyDB (missing: BerkeleyDB_LIBRARY BerkeleyDB_INCLUDE_DIR) (Required is at least version "4.8")
CMake Warning at cmake/optional.cmake:79 (message):
  Berkeley DB (BDB) required for legacy wallet support, but not found.

  Passing "-DWITH_BDB=no" will suppress this warning.

Call Stack (most recent call first):
  CMakeLists.txt:182 (include)

-- Checking for module 'libzmq>=4'
--   No package 'libzmq' found
CMake Warning at cmake/optional.cmake:134 (message):
  libzmq not found, disabling.

  To skip libzmq check, use "-DWITH_ZMQ=no".

Call Stack (most recent call first):
  CMakeLists.txt:182 (include)

We shouldn't have to pass any options to suppress, as Cmake shouldn't even be looking for these libs if we've opted out of in depends.

Note how Cmake didn't warn about a missing sqlite above. That seems to be because it'll just grab the sqlite from the system to enable sqlite wallet support. This shouldn't happen if I'm cross-compiling, or building from depends (regardless of NO_WALLET=1), and ultimately results in link errors:

[ 86%] Linking CXX executable bitcoin-wallet
ld: warning: ignoring file /usr/lib/x86_64-linux-gnu/libsqlite3.so, building for macOS-x86_64 but attempting to link with file built for unknown-unsupported file format ( 0x7F 0x45 0x4C 0x46 0x02 0x01 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 )
...
      wallet::SQLiteBatch::EraseKey(CDataStream&&) in libbitcoin_wallet.a(sqlite.cpp.o)
      wallet::SQLiteBatch::HasKey(CDataStream&&) in libbitcoin_wallet.a(sqlite.cpp.o)
      ...
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Testing a Windows cross compile currently fails for me:

make -C depends HOST=x86_64-w64-mingw32 NO_QT=1 NO_BDB=1 NO_UPNP=1 NO_ZMQ=1 NO_NATPMP=1
cmake --toolchain depends/x86_64-w64-mingw32/share/toolchain.cmake -S . -B build
cmake --build build -j9
...
/usr/bin/x86_64-w64-mingw32-ld: [ 97%] Linking CXX static library libbitcoin_node.a
cd /home/ubuntu/bitcoin/build/src && /usr/bin/cmake -P CMakeFiles/bitcoin_node.dir/cmake_clean_target.cmake
cd /home/ubuntu/bitcoin/build/src && /usr/bin/cmake -E cmake_link_script CMakeFiles/bitcoin_node.dir/link.txt --verbose=1
/usr/bin/x86_64-w64-mingw32-ar qc libbitcoin_node.a CMakeFiles/bitcoin_node.dir/addrdb.cpp.obj CMakeFiles/bitcoin_node.dir/addrman.cpp.obj CMakeFiles/bitcoin_node.dir/banman.cpp.obj CMakeFiles/bitcoin_node.dir/blockencodings.cpp.obj CMakeFiles/bitcoin_node.dir/blockfilter.cpp.obj CMakeFiles/bitcoin_node.dir/chain.cpp.obj CMakeFiles/bitcoin_node.dir/consensus/tx_verify.cpp.obj CMakeFiles/bitcoin_node.dir/dbwrapper.cpp.obj CMakeFiles/bitcoin_node.dir/deploymentstatus.cpp.obj CMakeFiles/bitcoin_node.dir/flatfile.cpp.obj CMakeFiles/bitcoin_node.dir/httprpc.cpp.obj CMakeFiles/bitcoin_node.dir/httpserver.cpp.obj CMakeFiles/bitcoin_node.dir/i2p.cpp.obj CMakeFiles/bitcoin_node.dir/index/base.cpp.obj CMakeFiles/bitcoin_node.dir/index/blockfilterindex.cpp.obj CMakeFiles/bitcoin_node.dir/index/coinstatsindex.cpp.obj CMakeFiles/bitcoin_node.dir/index/txindex.cpp.obj CMakeFiles/bitcoin_node.dir/init.cpp.obj CMakeFiles/bitcoin_node.dir/kernel/chain.cpp.obj CMakeFiles/bitcoin_node.dir/kernel/checks.cpp.obj CMakeFiles/bitcoin_node.dir/kernel/coinstats.cpp.obj CMakeFiles/bitcoin_node.dir/kernel/context.cpp.obj CMakeFiles/bitcoin_node.dir/kernel/mempool_persist.cpp.obj CMakeFiles/bitcoin_node.dir/mapport.cpp.obj CMakeFiles/bitcoin_node.dir/net.cpp.obj CMakeFiles/bitcoin_node.dir/netgroup.cpp.obj CMakeFiles/bitcoin_node.dir/net_processing.cpp.obj CMakeFiles/bitcoin_node.dir/node/blockstorage.cpp.obj CMakeFiles/bitcoin_node.dir/node/caches.cpp.obj CMakeFiles/bitcoin_node.dir/node/chainstate.cpp.obj CMakeFiles/bitcoin_node.dir/node/coin.cpp.obj CMakeFiles/bitcoin_node.dir/node/connection_types.cpp.obj CMakeFiles/bitcoin_node.dir/node/context.cpp.obj CMakeFiles/bitcoin_node.dir/node/eviction.cpp.obj CMakeFiles/bitcoin_node.dir/node/interface_ui.cpp.obj CMakeFiles/bitcoin_node.dir/node/interfaces.cpp.obj CMakeFiles/bitcoin_node.dir/node/mempool_args.cpp.obj CMakeFiles/bitcoin_node.dir/node/mempool_persist_args.cpp.obj CMakeFiles/bitcoin_node.dir/node/miner.cpp.obj CMakeFiles/bitcoin_node.dir/node/minisketchwrapper.cpp.obj CMakeFiles/bitcoin_node.dir/node/psbt.cpp.obj CMakeFiles/bitcoin_node.dir/node/transaction.cpp.obj CMakeFiles/bitcoin_node.dir/node/validation_cache_args.cpp.obj CMakeFiles/bitcoin_node.dir/noui.cpp.obj CMakeFiles/bitcoin_node.dir/policy/fees.cpp.obj CMakeFiles/bitcoin_node.dir/policy/fees_args.cpp.obj CMakeFiles/bitcoin_node.dir/policy/packages.cpp.obj CMakeFiles/bitcoin_node.dir/policy/rbf.cpp.obj CMakeFiles/bitcoin_node.dir/policy/settings.cpp.obj CMakeFiles/bitcoin_node.dir/pow.cpp.obj CMakeFiles/bitcoin_node.dir/rest.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/blockchain.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/fees.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/mempool.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/mining.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/net.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/node.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/output_script.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/rawtransaction.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/server.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/server_util.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/signmessage.cpp.obj CMakeFiles/bitcoin_node.dir/rpc/txoutproof.cpp.obj CMakeFiles/bitcoin_node.dir/script/sigcache.cpp.obj CMakeFiles/bitcoin_node.dir/shutdown.cpp.obj CMakeFiles/bitcoin_node.dir/signet.cpp.obj CMakeFiles/bitcoin_node.dir/timedata.cpp.obj CMakeFiles/bitcoin_node.dir/torcontrol.cpp.obj CMakeFiles/bitcoin_node.dir/txdb.cpp.obj CMakeFiles/bitcoin_node.dir/txmempool.cpp.obj CMakeFiles/bitcoin_node.dir/txorphanage.cpp.obj CMakeFiles/bitcoin_node.dir/txrequest.cpp.obj CMakeFiles/bitcoin_node.dir/validation.cpp.obj CMakeFiles/bitcoin_node.dir/validationinterface.cpp.obj CMakeFiles/bitcoin_node.dir/versionbits.cpp.obj CMakeFiles/bitcoin_node.dir/wallet/init.cpp.obj
CMakeFiles/bitcoinkernel.dir/objects.a(system.cpp.obj): in function `GetNumCores()':
/home/ubuntu/bitcoin/src/util/system.cpp:1415: undefined reference to `std::thread::hardware_concurrency()'
/usr/bin/x86_64-w64-mingw32-ld: /usr/bin/x86_64-w64-mingw32-ranlib libbitcoin_node.a
gmake[2]: Leaving directory '/home/ubuntu/bitcoin/build'

Full log is here: https://gist.github.com/fanquake/095adeae6f874ed6065c40019068bfff.

Updated 6e1dcc2ae5096dde327b71efb6bfa0bf120227e5 -> d56e4d193b7266212686dab00f57a3adf3b11db0 (pr25797.06 -> pr25797.07):

• addressed some of @fanquake's comments

(addressing of other comments in progress)

We shouldn't have to pass any options to suppress, as Cmake shouldn't even be looking for these libs if we've opted out of in depends.

Fixed in the recent update.

The new CMake-based build system (CM) does not support in-source builds.

This is a HUGE regression for development.

We shouldn't have to pass any options to suppress, as Cmake shouldn't even be looking for these libs if we've opted out of in depends.

Don't some depends users want to build using those system libs (while using depends for other stuff)?

On another note, I've noticed a lot of build system refactoring/NIH in Core has broken things that worked previously, and had to be fixed later. This indicates build system stuff, especially homegrown, is underreviewed. CMake might help this, or make it worse. If it's going to help, I would expect to see it reflected in a higher than normal amount of code review on this PR.

Don't some depends users want to build using those system libs (while using depends for other stuff)?

Only if you explicitly opt in. That shouldn't be the default behaviour (would defeat the point of depends), and I hadn't opted in here.

Concept ACK-ish, but only with 100% feature parity.

This is the kind of work that's easy enough to get 90% of the way there, but the remaining 10% will almost certainly be brutal.

I'm in agreement about moving to something more maintainable than Autotools in the long-term, but I'm absolutely against merging this for the sake of the stated reasons: Qt6, MSVC, trendiness (note that I've switched to CMake for my own projects, so I certainly have nothing against it). No offense, but honestly I think it's more reasonable to consider dropping those platforms than to cater our entire infrastructure to them. I share many of @luke-jr's concerns as well.

That said, I am very open to a feature-complete CMake port of our current build-system for the sake of modernization and future-proofing. But again, that means feature-parity and a focus on the high-priority targets. Sorry, but Qt6 and MSVC just aren't that.

I'm honestly not sure how to even begin reviewing this without some kind of 1:1 feature completion mapping. Our current build system does a whole lot more than just build binaries and libs.

For example, comments like this don't inspire much confidence

I'm assuming that unit-test build support with CMake is still under construction?

It is, but not as a part of this PR. My intention is to keep the latter more or less digestible for reviewers.

Could you please advise how we can review this without simply testing it on each platform? That approach would likely take years of after-the-fact corner-case fixing. For example, I think it'd be reasonable to set "autotools/cmake binary output equivalents for all supported platforms, or detailed explanations as to why they differ" as a pretty obvious requirement for merge. Otherwise we're just kinda hoping for no regressions, no?

I don't mean to be harsh with the above, I know how much time/effort work like this takes. But I'm afraid this will require some pretty intense planning and arguing to make it to the finish line.

tl;dr: charts and graphs please :)

This is the kind of work that's easy enough to get 90% of the way there, but the remaining 10% will almost certainly be brutal.

I'm probably naive, but I wonder what types of things might be difficult to implement with cmake.

It would also be helpful if PR description mentioned what features autotools build supports that cmake build doesn't support yet. Just skimming it wasn't clear if this mostly needs more testing on different platforms or if it has some major missing features that need to be implemented still.

@ryanofsky I didn't mean to imply that there's anything that wouldn't be possible with CMake, just that there's a lot to get done other than vanilla builds. A long list of little stuff like profiling output, configurable shared/static builds, deployment targets (dmg/exe installer creation), etc. Many of those things may even be easier with CMake, there's just a lot to account for.

It would also be helpful if PR description mentioned what features autotools build supports that cmake build doesn't support yet. Just skimming it wasn't clear if this mostly needs more testing on different platforms or if it has some major missing features that need to be implemented still.

Agreed, this is my ask as well. It could be that I skimmed too quickly, but I didn't see those kinds of things addressed here yet.

dongcarl fanquake ryanofsky theuni

Your conceptual assessments of this PR will be much appreciated.

Definitely major concept ACK from me. And the implementation seems very clean. I guess I can try getting multiprocess build to work with this since I don't see a flag for it yet.

Just to explain my concept ACK a little bit: I don't think CMake build needs to add much of a maintenance burden and don't think it needs to have parity with the autotools build. I think if we can start using CMake build for binary releases, then developers can switch to using cmake for all the cool new stuff (qt6, jetbrains, android, web IDEs, rust, bitcoin kernel) and autotools build can hang around in maintenance mode for the old boring stuff.

I don't think having two build systems should could much trouble for normal developers. Only difference is if you add or renaming a file or flag, you have to may have to make an extra edit.

I also don't think having two build systems should cause much trouble for people working on build features either, as long as we don't insist on parity between two systems and are clear about which build system is used for binary releases.

Updated d56e4d193b7266212686dab00f57a3adf3b11db0 -> 156afca1c03e2688417d1da313a475e58260d4ac (pr25797.07 -> pr25797.08):

• addressed more of @fanquake's comments, (addressing of other comments in progress)
• improved and detailed configure summary

Doing a depends build of 156afca1c03e2688417d1da313a475e58260d4ac, on aarch64 Linux, currently fails with:

make -C depends -j9 NO_QT=1 NO_WALLET=1 NO_ZMQ=1 NO_UPNP=1 NO_NATPMP=1 CC=clang CXX=clang++
cmake --toolchain depends/aarch64-unknown-linux-gnu/share/toolchain.cmake -S . -B build
Wallet functionality:
  SQLite, descriptor wallets ....... auto
  Berkeley DB, legacy wallets ...... auto
  wallet tool ...................... OFF
...
cmake --build build -j9
Consolidate compiler generated dependencies of target univalue
[  0%] Building CXX object CMakeFiles/minisketch.dir/src/minisketch/src/fields/generic_1byte.cpp.o
[  0%] Building CXX object src/crypto/CMakeFiles/bitcoin_crypto.dir/aes.cpp.o
[  0%] Building CXX object src/crc32c/CMakeFiles/crc32c_arm64.dir/src/crc32c_arm64.cc.o
[  1%] Building CXX object CMakeFiles/minisketch.dir/src/minisketch/src/fields/generic_2bytes.cpp.o
[  1%] Building CXX object CMakeFiles/minisketch.dir/src/minisketch/src/minisketch.cpp.o
[  1%] Building CXX object CMakeFiles/minisketch.dir/src/minisketch/src/fields/generic_3bytes.cpp.o
clang-14: warning: argument unused during compilation: '-fstack-clash-protection' [-Wunused-command-line-argument]
[  3%] Building CXX object src/crc32c/CMakeFiles/crc32c_sse42.dir/src/crc32c_sse42.cc.o
[  3%] Built target univalue
[  3%] Building C object CMakeFiles/secp256k1.dir/src/secp256k1/src/secp256k1.c.o
clang-14clang-14: warning: argument unused during compilation: '-fstack-clash-protection' [-Wunused-command-line-argument]
clang-14: warning: argument unused during compilation: '-fstack-clash-protection' [-Wunused-command-line-argument]
: error: argument unused during compilation: '-fstack-clash-protection' [-Werror,-Wunused-command-line-argument]
gmake[2]: *** [src/crc32c/CMakeFiles/crc32c_arm64.dir/build.make:76: src/crc32c/CMakeFiles/crc32c_arm64.dir/src/crc32c_arm64.cc.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:543: src/crc32c/CMakeFiles/crc32c_arm64.dir/all] Error 2
gmake[1]: *** Waiting for unfinished jobs....
Consolidate compiler generated dependencies of target bitcoin_util
clang-14: warning: argument unused during compilation: '-fstack-clash-protection' [-Wunused-command-line-argument]
[  3%] Building C object CMakeFiles/secp256k1.dir/src/secp256k1/src/precomputed_ecmult.c.o
clang-14: warning: argument unused during compilation: '-fstack-clash-protection' [-Wunused-command-line-argument]
clang-14: error: argument unused during compilation: '-fstack-clash-protection' [-Werror,-Wunused-command-line-argument]
gmake[2]: *** [src/crc32c/CMakeFiles/crc32c_sse42.dir/build.make:76: src/crc32c/CMakeFiles/crc32c_sse42.dir/src/crc32c_sse42.cc.o] Error 1

CXXFLAG detection marks -fstack-clash-protection as usable even though it's unused:

Source file was:
int main() { return 0; }
Performing C++ SOURCE FILE Test CXX_SUPPORTS_FSTACK_CLASH_PROTECTION succeeded with the following output:
Change Dir: /home/fedora/bitcoin/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake -f Makefile cmTC_c2ada/fast && /usr/bin/gmake  -f CMakeFiles/cmTC_c2ada.dir/build.make CMakeFiles/cmTC_c2ada.dir/build
gmake[1]: Entering directory '/home/fedora/bitcoin/build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_c2ada.dir/src.cxx.o
/usr/bin/clang++ -DCXX_SUPPORTS_FSTACK_CLASH_PROTECTION  -fstack-clash-protection -std=c++17 -MD -MT CMakeFiles/cmTC_c2ada.dir/src.cxx.o -MF CMakeFiles/cmTC_c2ada.dir/src.cxx.o.d -o CMakeFiles/cmTC_c2ada.dir/src.cxx.o -c /home/fedora/bitcoin/build/CMakeFiles/CMakeTmp/src.cxx
clang-14: warning: argument unused during compilation: '-fstack-clash-protection' [-Wunused-command-line-argument]
Linking CXX static library libcmTC_c2ada.a
/usr/bin/cmake -P CMakeFiles/cmTC_c2ada.dir/cmake_clean_target.cmake
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_c2ada.dir/link.txt --verbose=1
/usr/bin/llvm-ar qc libcmTC_c2ada.a CMakeFiles/cmTC_c2ada.dir/src.cxx.o
/usr/bin/llvm-ranlib libcmTC_c2ada.a
gmake[1]: Leaving directory '/home/fedora/bitcoin/build/CMakeFiles/CMakeTmp'

Any reason you're not using -Werror for flag checks like we do in configure?

The build ultimately fails because -Werror is enabled for the crc32c build. Looks like we'll need to turn off any flags we don't want enabled by default (like -Werror) in the subproject CMake configurations.

Note that I included the Wallet functionality snippet above, because even though I built depends with NO_WALLET=1, the configure summary says auto for sqlite/bdb, where it should say no.

Concept ACK

https://blog.jetbrains.com/clion/2020/06/dev-eco-cpp-2020/#project_models has some numbers on build systems' popularity and trends.

Updated 156afca1c03e2688417d1da313a475e58260d4ac -> e016b22e6c365194743f54a7111f44caf6051394 (pr25797.08 -> pr25797.09):

• added the TryAppendLinkerFlag module
• addressed more of @fanquake's comments, (addressing of other comments in progress)

Just to explain my concept ACK a little bit: I don't think CMake build needs to add much of a maintenance burden and don't think it needs to have parity with the autotools build. I think if we can start using CMake build for binary releases, then developers can switch to using cmake for all the cool new stuff (qt6, jetbrains, android, web IDEs, rust, bitcoin kernel) and autotools build can hang around in maintenance mode for the old boring stuff.

I don't think having two build systems should could much trouble for normal developers. Only difference is if you add or renaming a file or flag, you have to may have to make an extra edit.

I also don't think having two build systems should cause much trouble for people working on build features either, as long as we don't insist on parity between two systems and are clear about which build system is used for binary releases.

I beg you not to trivialize this way. The buildsystem has major implications for how work is done, namely large refactoring projects like libkernel. Maintaining two build systems may only make one-off PRs a little tougher, but it's guaranteed to significantly impede more interesting (and important) long-term efforts. Given the burnout and long-term developer attrition we've seen lately, that seems exactly backwards prioritization to me. Sure I'm biased towards the big cleanup projects, but at as I said above I think the project would benefit from dropping features and scope rather than adding/expanding. Sure, IDE integration and new platforms and bells and whistles would be nice, but this has whiffs of Zawinski's Law to me.

Call me a cranky old git, but as much as I'd like a more modern infrastructure, I'm changing/editing my support to a NACK for CMake until it's clear that the implications are better understood by everyone involved/affected. I don't understand the support/concept ACKs that this is receiving when so much of the concept (or even a roadmap) is still absent.

And all that is without even mentioning the new overhead of adding what's essentially a new language that we have no history of reviewing/supporting in this project. Please consider the growing pains.

I support @hebasto's work here, but I think this PR was opened too early. Personally, I'd suggest taking a step back and making a plan before throwing it up for a committee-style discussion. I'd be happy to take another look at this if/when there's a thoughtful roadmap/feature matrix attached. Until then I'm honestly not sure what we're discussing here so I'll keep out.

it's guaranteed to significantly impede more interesting (and important) long-term efforts.

My point is that this is only true if you require parity between the two build systems. I think it's fine (and preferable) if libbitcoinkernel and other newer projects target cmake only, and just keep autotools build working in maintenance mode. Of course if any autotools-lovers want to step up and contribute new features to the autotools build they should be free to do that, too.

@theuni, I think you not making a clear enough distinction between maintaining a build system, and adding new features to a build system. I can attest to the difference personally. For everyday development, my interaction with autotools is very pleasant. It is very easy to maintain makefiles during normal c++ development as flags are switched or files are added and moved around. By contrast, implementing multiprocess support where I was adding a new build feature to autotools was a painful process that was very difficult to get right, and even had subtle bugs that were uncovered years after original code was written (#25214).

I think we both agree that requiring new features to be implemented in two build systems would be a major setback to development. But your solution to that would be to ban use of a build system that would make development easier. My solution would be to choose one build system to use for binary releases, and drop the requirement that the both systems need to have feature parity for other types of development. For development purposes, it's fine to say that we have two build systems, and you are free to use the one your prefer. Build system X supports features A B and C, system Y supports features A B and D. If there is a build feature which your preferred build system is missing, you are welcome to submit a patch.

I think new IDEs and new development tools tend to use cmake, and tend not use or even support autotools. I think we will make onboarding of new developers more difficult by feverishly clinging to autotools, and make existing developers less productive and code less safe if we can't benefit from using new tools. I also think adding new build features easier using cmake, but obviously this is subjective, and a reason why I think we shouldn't be demanding feature parity.

@ryanofsky Please re-read my comments and please don't twist my words. Nowhere to I advocate for autotools. I hate it. it's dated and awful. In each comment I've advocated FOR CMake. I use, like, and prefer it.

I'm just begging that we not hand-wave the very real pain of switching or maintaining two, and figure out a way to do it right. I'm on your side here, really.

@ryanofsky as for partial/incremental support of CMake, I suppose my hesitation (which I should've made more clear) is that neither a (partial) build-system switch or a long-term feature merge happen overnight, nor in a vacuum. Realistically they'll overlap. It's easy to say "just use CMake for the new stuff", but for long-lived projects, that unfortunately will mean supporting both (or one awkwardly) during the dev/work/comment/merge periods.

For the CMake buildsystem to become supported for release, I would expect that to take no less than 6months to a year. Maybe I'm over-estimating, but that's exactly what I'm trying to flesh out here. When I alluded to the 90%/10% work above, that's what I was getting at. Getting to the point where the binaries build is one milestone, but getting to the point where we have that process fully integrated and we're ready to ship those deterministic/hardened/etc. binaries with all tests passing and happy downstreams is another. It's doable and we SHOULD do it, but it will take time and process and people-power. And during that time, it will be an extra burden for long-lived projects.

@theuni

I'd be happy to take another look at this if/when there's a ... feature matrix attached.

Is the following table a move in the right direction?

Autotools -- CMake Feature Parity Table

Autotool-based build system (AT) features being listed according to the ./configure --help output.

@hebasto Yes thanks, that's a huge help! One other helpful set of features to add would be convenience targets used by release processes/ci/etc. There are lots, but make deploy and make check are the two most obvious that come to mind.

Edit: s/release/deploy/

Edit2: Also --enable-shared and --enable-static are biggies for the libs in that they add lots of build complexity.

@ryanofsky Please re-read my comments and please don't twist my words. Nowhere to I advocate for autotools. I hate it. it's dated and awful. In each comment I've advocated FOR CMake. I use, like, and prefer it.

Sorry, it's a really bad thing to misrepresent someone's position and I was not trying to do that. I wasn't trying to say you personally prefer autotools, just that, as I see it, the bitcoin core project is unproductively stuck clinging to autotools, and costs of adding cmake support should be small as long as we (1) choose one build system to use for official releases (2) allow each build system to have different features for other development and don't insist on parity

Sorry, it's a really bad thing to misrepresent someone's position and I was not trying to do that. I wasn't trying to say you personally prefer autotools, just that, as I see it, the bitcoin core project is unproductively stuck clinging to autotools, and costs of adding cmake support should be small as long as we (1) choose one build system to use for official releases (2) allow each build system to have different features for other development and don't insist on parity

Thanks. And it's understandable that I'm pretty much synonymous with autotools around here, since I did that to us.

Agree to disagree on 2), as I believe problems with this approach will expose themselves as @hebasto plods on. But I'll try to keep the discussion productive.

(2) allow each build system to have different features for other development and don't insist on parity

More specifically, I don't think that a flag-day switch-over would be the only way to do this. But maybe I've been misrepresenting your "some stuff here, some stuff there" approach as well. So maybe we should drill down some.

I took your approach to mean something like (using a made-up but maybe realistic example): "CMake builds the release binaries, but autotools continues to handle the c-i for a while". I think this would be a bad idea. I jumped to that conclusion because @hebasto mentioned hooking up the unit tests in a follow-up PR. I think that would be a very unwise approach.

However, if (once the feature matrix is more built out) we can agree on a set of essentials (I would say release binaries, c-i, everyday dev features, not sure what else), then something like a feature-freeze for autotools and a promise to move over the remaining less critical features (for ex profiling, coverage, etc) over the course of a release cycle.. I could see that as realistic. So I guess that relies on a few things happening:

• a minimum viable set of features being 100% complete, tested, and working with CMake
• a clear direction of feature movement (away from frozen autotools to CMake)
• a plan/promise to move the remaining features
• a sunset plan for autotools

Again, the absence of those things here is what leads me to believe that this work is jumping the gun. But instead of grumping, I should've just laid that out. Turns out it took some fighting for that to materialize for me. Thank you for your patience :)

Converted to a draft until achievement of essential features parity.

Updated e016b22e6c365194743f54a7111f44caf6051394 -> 99793951bb06819aa626f7813e7d6f0a26ebd205 (pr25797.09 -> pr25797.10):

• rebased
• addressed issues mentioned by @fanquake in his comment

Any reason you're not using -Werror for flag checks like we do in configure?

Fixed. Actually, it is that file's job, but it needs to be updated with the "argument unused during compilation" case.

The build ultimately fails because -Werror is enabled for the crc32c build. Looks like we'll need to turn off any flags we don't want enabled by default (like -Werror) in the subproject CMake configurations.

As the crc32c project modifies the CMAKE_CXX_FLAGS variable directly, it must be fixed within the project (a bad CMake practice case -- global compiler flags instead of binding them to targets).

As the crc32c project modifies the CMAKE_CXX_FLAGS variable directly, it must be fixed within the project (a bad CMake practice case -- global compiler flags instead of binding them to targets).

Any reason not to PR a fix for this upstream?

Interesting. Many open-source project have considered meson a very lightweight, effective, and well-maintained build system.

Have you compared or contrasted CMake with Meson?

@da2ce7

Have you compared or contrasted CMake with Meson?

From the PR description:

• https://www.qt.io/blog/qt-6-build-system:

CMake is the build system for Qt 6

@da2ce7

Have you compared or contrasted CMake with Meson?

From the PR description:

• https://www.qt.io/blog/qt-6-build-system:

CMake is the build system for Qt 6

I believe the QT module for meson supports Qt 6 also: https://github.com/mesonbuild/meson/blob/master/mesonbuild/modules/qt.py

In many ways I think that the ideals of meson align closer than cmake for bitcoin. (light-weight, more auditable, and faster, while still being activity maintained and popular).

meson is annoying to me as a user (for other software). I have to re-patch it every release.

But in any case, other build systems seem off-topic here. Suggest opening a new issue if you really want to push meson.

meson is annoying to me as a user (for other software). I have to re-patch it every release.

Aside: Why would you need to patch any software "every release"? If you're maintaining a private rolling patchset on top of Meson, shouldn't this be contributed upstream?

As the crc32c project modifies the CMAKE_CXX_FLAGS variable directly, it must be fixed within the project (a bad CMake practice case -- global compiler flags instead of binding them to targets).

I was wrong. We can override the -Werror option in the CMAKE_CXX_FLAGS variable, which is local in the crc32c directory scope, with the -Wno-error option in the COMPILE_OPTIONS property of the crc32c directory. @theuni

Any reason not to PR a fix for this upstream?

A patch doesn't look to be trivial as the CMAKE_CXX_FLAGS variable does affect the following check_cxx_compiler_flag commands.

Updated 99793951bb06819aa626f7813e7d6f0a26ebd205 -> 943e5ceeaaba706560cfbd23023e7cd8be151d6f (pr25797.10 -> pr25797.11):

• rebased
• added draft implementation for test_bitcoin executable
• a few other improvements

Updated 943e5ceeaaba706560cfbd23023e7cd8be151d6f -> 24dc55b03ce11cc5a51d4973993058bb7b77ae9f (pr25797.11 -> pr25797.12):

• rebased
• added the check target, use as usually -- make check
• fixed linter errors

The PR description has been updated.

I'm assuming that unit-test build support with CMake is still under construction?

It is, but not as a part of this PR. My intention is to keep the latter more or less digestible for reviewers.

Could you please advise how we can review this without simply testing it on each platform? @theStack @theuni

The make check has been implemented now :tiger2:

Updated 24dc55b03ce11cc5a51d4973993058bb7b77ae9f -> efe98def733c39e18dc2b0032787fe6dda503ab5 (pr25797.12 -> pr25797.13):

• rebased on top of the recent changes in the build system
• fixed linking on macOS

@adam2k

Although, I am running into errors during the second step in the process when I get to the Linking CXX executable bitcoin-qt.

Thank you for testing! Linking on macOS should be fixed now.

Thanks for the fix @hebasto!

Approach ACK efe98def733c39e18dc2b0032787fe6dda503ab5

I don't have as much background as others commenting here, so take my ACK as QA on the build and run process on an M1 Mac.

Hardware Overview:

  Model Name:	MacBook Pro
  Model Identifier:	MacBookPro18,3
  Chip:	Apple M1 Pro
  Total Number of Cores:	8 (6 performance and 2 efficiency)
  Memory:	32 GB

$ make
...
[ 78%] Built target bitcoinqt
[ 78%] Automatic MOC and UIC for target bitcoin-qt
[ 78%] Built target bitcoin-qt_autogen
[ 78%] Building CXX object src/qt/CMakeFiles/bitcoin-qt.dir/bitcoin-qt_autogen/mocs_compilation.cpp.o
[ 78%] Building CXX object src/qt/CMakeFiles/bitcoin-qt.dir/main.cpp.o
[ 78%] Building CXX object src/qt/CMakeFiles/bitcoin-qt.dir/__/init/bitcoin-qt.cpp.o
[ 79%] Linking CXX executable bitcoin-qt
[ 79%] Built target bitcoin-qt
...
[100%] Linking CXX executable test_bitcoin
[100%] Built target test_bitcoin

$ make check
...
108/108 Test [#105](/bitcoin-bitcoin/105/): wallet_tests:../wallet/test/wallet_tests.cpp ................................   Passed   12.83 sec

100% tests passed, 0 tests failed out of 108

Total Test time (real) =  18.36 sec
[100%] Built target check

Updated efe98def733c39e18dc2b0032787fe6dda503ab5 -> 10c404eb22d48cf7472ecde6571e276ecb0b3975 (pr25797.13 -> pr25797.14):

• added the WERROR option
• fixed BDB search on FreeBSD (thanks to @vasild for reporting this issue on IRC and working on a fix)
• other improvements and fixes

Updated 10c404eb22d48cf7472ecde6571e276ecb0b3975 -> f4908a81baf9db9d4b1239856901743bb5a7404e (pr25797.14 -> pr25797.15):

• added the CXX20 option
• use -DCMAKE_BUILD_TYPE=Debug as Autotools's --enable-debug
• other improvements and fixes

The PR description has been amended with an example of cross-building for Windows with DEBUG=1 which is broken in Autotools-based build system.

Updated f4908a81baf9db9d4b1239856901743bb5a7404e -> e518752dde040626e8833124107210a980c713fb (pr25797.15 -> pr25797.16):

• added the BUILD_BENCH option
• added the INSTALL_MAN option

Updated e518752dde040626e8833124107210a980c713fb -> c2c5553c2e02e75be0a87e4522329b792cf23a25 (pr25797.16 -> pr25797.17):

• added the BUILD_SHARED option
• added the BUILD_STATIC option
• added the BUILD_UTIL_CHAINSTATE option @theuni @TheCharlatan Your feedback regarding the recent updates will be much appreciated.

Updated c2c5553c2e02e75be0a87e4522329b792cf23a25 -> b08c83db15e5fc2cfe1d075854b6cb481432f1d3 (pr25797.17 -> pr25797.18).

Building of libbitcoinconsensus and libbitcoinkernel now works for any reasonable configuration, including shared and/or static, native for Linux, macOS, Windows or cross-building.

Also an issue, which was similar to #25947, has been fixed.

Updated b4ffc79603c73a73df0fc734e2825450920de929 -> 43c9e77b6c158874831aba61e2861060137a209e (pr25797.20 -> pr25797.21):

• rebased
• the "Win64 native [vs2022]" CI task converted to CMake (cc @sipsorcery)

Rebased 43c9e77b6c158874831aba61e2861060137a209e -> 8a1fd1984100911ddfc16175a66ca45cac36de32 (pr25797.21 -> pr25797.22).

Updated 8a1fd1984100911ddfc16175a66ca45cac36de32 -> 14c3cd04db7168478cbbd0294d3de8c892c67b45 (pr25797.22 -> pr25797.23):

• rebased
• bugfixes
• improvements

Updated d6c6114845d9199e9e4cf56e5d2a4a5103034c14 -> d4965750cb24a853d19114799babafb72676f8e2 (pr25797.24 -> pr25797.25):

• rebased
• bugfixes
• improvements

Rebased d4965750cb24a853d19114799babafb72676f8e2 -> fdaea87660acdf5d76182f313a7add5ea0b2fd98 (pr25797.25 -> pr25797.26) on top of the #26373 to make the test/lint/git-subtree-check.sh lint script happy.

Updated fdaea87660acdf5d76182f313a7add5ea0b2fd98 -> db8632f872b73d42aa1b2c73ecf2647b9f3c4df0 (pr25797.26 -> pr25797.27):

• rebased
• fixed CMake 3.10 compatibility issues

Guix builds for all Linux hosts are available now.

Guix builds on x86_64:

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658ecc8f096ca2336ebf42b5898b7605bec77196191578daa38a56cd491fe2ca  guix-build-2d258107b571/output/x86_64-w64-mingw32/bitcoin-2d258107b571-win64-unsigned.tar.gz
d1df5ff7cd47f4baf7c6846229ad1fc24849742831916d4e7bc5c6b80a812626  guix-build-2d258107b571/output/x86_64-w64-mingw32/bitcoin-2d258107b571-win64.zip

Updated (pr25797.33):

• rebased
• add the SANITIZERS option
• 12 of 16 CI tasks have been migrated to CMake -- https://cirrus-ci.com/build/6656424604860416

Guix builds:

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Updated 22ca7396ce1407b47f6ece5167f95c50509475ab -> f7ed9f9398c6a587018faa16af86bb48c3150dc6 (pr25797.34 -> pr25797.35):

• rebased
• added the -DASM configuration option
• improved bitcoin_crypto library
• 13 of 16 CI tasks have been migrated to CMake -- https://cirrus-ci.com/build/6716495894937600

Guix builds:

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GUIX hashes

x86:

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da29a3e4895097e8c65e1c3eb5fb968c142d97a2c0024285c9cd9c9bf08cd407  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64-debug.zip
913dd6b18ee709131cb67d903beec86eb98b430f4632b2a423c25baffe6d363d  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64-setup-unsigned.exe
34dbeda2d684595de8a3b171ff79fc50d9287df9e153bd332a93cccfb4f1fe3c  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64-unsigned.tar.gz
9e1d73e552eec44fde06d82b5eb72d7f077d68a826c6827f179ca6c25d66ad17  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64.zip

arm64:

20f02048691ca60d9e4a7202cfc7607cbd16e616df81ccf346a8e09b91d94134  guix-build-219866feca50/output/aarch64-linux-gnu/SHA256SUMS.part
73e722a001c303ca27762ceedffb53e092b22e3c5ff2130bc42cb9f42423433a  guix-build-219866feca50/output/aarch64-linux-gnu/bitcoin-219866feca50-aarch64-linux-gnu-debug.tar.gz
b35a5e5295469aa3e4a99faba16f32b4a236014f1048f2602c0ed118279aec9f  guix-build-219866feca50/output/aarch64-linux-gnu/bitcoin-219866feca50-aarch64-linux-gnu.tar.gz
9edacfaefa0eacd629488ec24ee8c9225b1f3bfc11c1f4bb2cd918fb04c7ed01  guix-build-219866feca50/output/arm-linux-gnueabihf/SHA256SUMS.part
3d83a9d4a6726ea0cd075d43d33924c844b5fec21e5b09136cd69eddcee61539  guix-build-219866feca50/output/arm-linux-gnueabihf/bitcoin-219866feca50-arm-linux-gnueabihf-debug.tar.gz
1975b67418b7e8c353c3656af47a32640ba26257b60daaee2e03181f2e6bcf09  guix-build-219866feca50/output/arm-linux-gnueabihf/bitcoin-219866feca50-arm-linux-gnueabihf.tar.gz
982557aa54df13656f79514ff0b3407674c72f7712eaa77054b2d2179500f044  guix-build-219866feca50/output/arm64-apple-darwin/SHA256SUMS.part
9ddf8d105ca71e8b2c6cb412ebc7096a8b73683196d582cf41829d4efd08970d  guix-build-219866feca50/output/arm64-apple-darwin/bitcoin-219866feca50-arm64-apple-darwin-unsigned.dmg
69ce578e761179caa5c89b3b6904a18306c6a2a71ccae8cd8319b19b0e77433f  guix-build-219866feca50/output/arm64-apple-darwin/bitcoin-219866feca50-arm64-apple-darwin-unsigned.tar.gz
5d5f45579f878deb83d9c1efc90dc731c385645d0d0741733aa7069219f17ee3  guix-build-219866feca50/output/arm64-apple-darwin/bitcoin-219866feca50-arm64-apple-darwin.tar.gz
5ff1b74f04033cce9bd81381f22dad7cce6cdd6f9a904660df4bb972f0f90a64  guix-build-219866feca50/output/dist-archive/bitcoin-219866feca50.tar.gz
7007509d189f6e72dcec499c21863ac971394b20895ef787c97ee7334c4f03a9  guix-build-219866feca50/output/powerpc64-linux-gnu/SHA256SUMS.part
da6bba4dadec94c67373daf3e1c8360ffc2c106c9b3ed745e4377ec24614001d  guix-build-219866feca50/output/powerpc64-linux-gnu/bitcoin-219866feca50-powerpc64-linux-gnu-debug.tar.gz
6c2eddecb33dc1a8fce980c6093188be19ba8d4bbe7ea391bfd5655d884e9563  guix-build-219866feca50/output/powerpc64-linux-gnu/bitcoin-219866feca50-powerpc64-linux-gnu.tar.gz
edbe01931488033808ac143b8d0e5e908e600ba7adaa70762b5554ba8b2ddede  guix-build-219866feca50/output/powerpc64le-linux-gnu/SHA256SUMS.part
37028a694608ea5de486a25814adcafea371686a0eb6293f1afa6f8da37823a4  guix-build-219866feca50/output/powerpc64le-linux-gnu/bitcoin-219866feca50-powerpc64le-linux-gnu-debug.tar.gz
6bf6896934a96cd3ed088822af1ab236ffb75d56ca3c1607edf313ff88d0636d  guix-build-219866feca50/output/powerpc64le-linux-gnu/bitcoin-219866feca50-powerpc64le-linux-gnu.tar.gz
b28d61a9be932b35b39e71651df787d132cf3a84b2057da037478dab9afa0d51  guix-build-219866feca50/output/riscv64-linux-gnu/SHA256SUMS.part
d7f8a8db3e6b663f2f16584e0ae3e053f53ac28ab9eb04421bed6c30e490a8dd  guix-build-219866feca50/output/riscv64-linux-gnu/bitcoin-219866feca50-riscv64-linux-gnu-debug.tar.gz
ab9fc807d237d7d3e3ba48af2f8907c669c6282bcd6dfda68523505976d093fc  guix-build-219866feca50/output/riscv64-linux-gnu/bitcoin-219866feca50-riscv64-linux-gnu.tar.gz
d583f668b9e81bc38b5a21121b0713337bd9ace9aeb32638cc8e1838e821c25d  guix-build-219866feca50/output/x86_64-apple-darwin/SHA256SUMS.part
5582c5c7625d12165774ad2bf9e8b86bae6623870802e2b56f1b46daec46f03f  guix-build-219866feca50/output/x86_64-apple-darwin/bitcoin-219866feca50-x86_64-apple-darwin-unsigned.dmg
4229782794fc915d65a29a7efc084246a46a31719e912e3d0d676e6ab21e5aed  guix-build-219866feca50/output/x86_64-apple-darwin/bitcoin-219866feca50-x86_64-apple-darwin-unsigned.tar.gz
5eb722711acf9b0a7020c8291123c42f4c93bde0e075ce943493a36eb81567db  guix-build-219866feca50/output/x86_64-apple-darwin/bitcoin-219866feca50-x86_64-apple-darwin.tar.gz
79688f6bb82cbc68ce9e0a5f33d3cab5c4b6dc962255287005c4899890f67986  guix-build-219866feca50/output/x86_64-linux-gnu/SHA256SUMS.part
16c8f915c3387422e04be20f1161853721a607d7bf46e0cab0a944d927e1e7ab  guix-build-219866feca50/output/x86_64-linux-gnu/bitcoin-219866feca50-x86_64-linux-gnu-debug.tar.gz
e8ab83d38a7ffb261dadb6ba6216321569bc560e9f60f9468781e91fbdf8c4b5  guix-build-219866feca50/output/x86_64-linux-gnu/bitcoin-219866feca50-x86_64-linux-gnu.tar.gz
317c549a71c20766a632a19f7d555b05c40adb4ac9a63926524ec117227679c6  guix-build-219866feca50/output/x86_64-w64-mingw32/SHA256SUMS.part
da29a3e4895097e8c65e1c3eb5fb968c142d97a2c0024285c9cd9c9bf08cd407  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64-debug.zip
913dd6b18ee709131cb67d903beec86eb98b430f4632b2a423c25baffe6d363d  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64-setup-unsigned.exe
34dbeda2d684595de8a3b171ff79fc50d9287df9e153bd332a93cccfb4f1fe3c  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64-unsigned.tar.gz
9e1d73e552eec44fde06d82b5eb72d7f077d68a826c6827f179ca6c25d66ad17  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64.zip

<!--9cd9c72976c961c55c7acef8f6ba82cd-->

Guix builds

Updated f7ed9f9398c6a587018faa16af86bb48c3150dc6 -> 6dfed1e708fa874870d9880d6348836577239223 (pr25797.35 -> pr25797.36):

• rebased
• fixed maxOS-specific minor bugs
• improved multi-configuration handling for dependencies (MSVC)

concept ACK

Updated up to pr25797.39:

• rebased
• added the -DBUILD_FUZZ_BINARY configuration option
• added the -DFUZZ configuration option
• improved check target
• 14 of 16 CI tasks have been migrated to CMake -- https://cirrus-ci.com/build/5443924467122176

Guix builds:

20f02048691ca60d9e4a7202cfc7607cbd16e616df81ccf346a8e09b91d94134  guix-build-219866feca50/output/aarch64-linux-gnu/SHA256SUMS.part
73e722a001c303ca27762ceedffb53e092b22e3c5ff2130bc42cb9f42423433a  guix-build-219866feca50/output/aarch64-linux-gnu/bitcoin-219866feca50-aarch64-linux-gnu-debug.tar.gz
b35a5e5295469aa3e4a99faba16f32b4a236014f1048f2602c0ed118279aec9f  guix-build-219866feca50/output/aarch64-linux-gnu/bitcoin-219866feca50-aarch64-linux-gnu.tar.gz
9edacfaefa0eacd629488ec24ee8c9225b1f3bfc11c1f4bb2cd918fb04c7ed01  guix-build-219866feca50/output/arm-linux-gnueabihf/SHA256SUMS.part
3d83a9d4a6726ea0cd075d43d33924c844b5fec21e5b09136cd69eddcee61539  guix-build-219866feca50/output/arm-linux-gnueabihf/bitcoin-219866feca50-arm-linux-gnueabihf-debug.tar.gz
1975b67418b7e8c353c3656af47a32640ba26257b60daaee2e03181f2e6bcf09  guix-build-219866feca50/output/arm-linux-gnueabihf/bitcoin-219866feca50-arm-linux-gnueabihf.tar.gz
982557aa54df13656f79514ff0b3407674c72f7712eaa77054b2d2179500f044  guix-build-219866feca50/output/arm64-apple-darwin/SHA256SUMS.part
9ddf8d105ca71e8b2c6cb412ebc7096a8b73683196d582cf41829d4efd08970d  guix-build-219866feca50/output/arm64-apple-darwin/bitcoin-219866feca50-arm64-apple-darwin-unsigned.dmg
69ce578e761179caa5c89b3b6904a18306c6a2a71ccae8cd8319b19b0e77433f  guix-build-219866feca50/output/arm64-apple-darwin/bitcoin-219866feca50-arm64-apple-darwin-unsigned.tar.gz
5d5f45579f878deb83d9c1efc90dc731c385645d0d0741733aa7069219f17ee3  guix-build-219866feca50/output/arm64-apple-darwin/bitcoin-219866feca50-arm64-apple-darwin.tar.gz
5ff1b74f04033cce9bd81381f22dad7cce6cdd6f9a904660df4bb972f0f90a64  guix-build-219866feca50/output/dist-archive/bitcoin-219866feca50.tar.gz
7007509d189f6e72dcec499c21863ac971394b20895ef787c97ee7334c4f03a9  guix-build-219866feca50/output/powerpc64-linux-gnu/SHA256SUMS.part
da6bba4dadec94c67373daf3e1c8360ffc2c106c9b3ed745e4377ec24614001d  guix-build-219866feca50/output/powerpc64-linux-gnu/bitcoin-219866feca50-powerpc64-linux-gnu-debug.tar.gz
6c2eddecb33dc1a8fce980c6093188be19ba8d4bbe7ea391bfd5655d884e9563  guix-build-219866feca50/output/powerpc64-linux-gnu/bitcoin-219866feca50-powerpc64-linux-gnu.tar.gz
edbe01931488033808ac143b8d0e5e908e600ba7adaa70762b5554ba8b2ddede  guix-build-219866feca50/output/powerpc64le-linux-gnu/SHA256SUMS.part
37028a694608ea5de486a25814adcafea371686a0eb6293f1afa6f8da37823a4  guix-build-219866feca50/output/powerpc64le-linux-gnu/bitcoin-219866feca50-powerpc64le-linux-gnu-debug.tar.gz
6bf6896934a96cd3ed088822af1ab236ffb75d56ca3c1607edf313ff88d0636d  guix-build-219866feca50/output/powerpc64le-linux-gnu/bitcoin-219866feca50-powerpc64le-linux-gnu.tar.gz
b28d61a9be932b35b39e71651df787d132cf3a84b2057da037478dab9afa0d51  guix-build-219866feca50/output/riscv64-linux-gnu/SHA256SUMS.part
d7f8a8db3e6b663f2f16584e0ae3e053f53ac28ab9eb04421bed6c30e490a8dd  guix-build-219866feca50/output/riscv64-linux-gnu/bitcoin-219866feca50-riscv64-linux-gnu-debug.tar.gz
ab9fc807d237d7d3e3ba48af2f8907c669c6282bcd6dfda68523505976d093fc  guix-build-219866feca50/output/riscv64-linux-gnu/bitcoin-219866feca50-riscv64-linux-gnu.tar.gz
d583f668b9e81bc38b5a21121b0713337bd9ace9aeb32638cc8e1838e821c25d  guix-build-219866feca50/output/x86_64-apple-darwin/SHA256SUMS.part
5582c5c7625d12165774ad2bf9e8b86bae6623870802e2b56f1b46daec46f03f  guix-build-219866feca50/output/x86_64-apple-darwin/bitcoin-219866feca50-x86_64-apple-darwin-unsigned.dmg
4229782794fc915d65a29a7efc084246a46a31719e912e3d0d676e6ab21e5aed  guix-build-219866feca50/output/x86_64-apple-darwin/bitcoin-219866feca50-x86_64-apple-darwin-unsigned.tar.gz
5eb722711acf9b0a7020c8291123c42f4c93bde0e075ce943493a36eb81567db  guix-build-219866feca50/output/x86_64-apple-darwin/bitcoin-219866feca50-x86_64-apple-darwin.tar.gz
79688f6bb82cbc68ce9e0a5f33d3cab5c4b6dc962255287005c4899890f67986  guix-build-219866feca50/output/x86_64-linux-gnu/SHA256SUMS.part
16c8f915c3387422e04be20f1161853721a607d7bf46e0cab0a944d927e1e7ab  guix-build-219866feca50/output/x86_64-linux-gnu/bitcoin-219866feca50-x86_64-linux-gnu-debug.tar.gz
e8ab83d38a7ffb261dadb6ba6216321569bc560e9f60f9468781e91fbdf8c4b5  guix-build-219866feca50/output/x86_64-linux-gnu/bitcoin-219866feca50-x86_64-linux-gnu.tar.gz
317c549a71c20766a632a19f7d555b05c40adb4ac9a63926524ec117227679c6  guix-build-219866feca50/output/x86_64-w64-mingw32/SHA256SUMS.part
da29a3e4895097e8c65e1c3eb5fb968c142d97a2c0024285c9cd9c9bf08cd407  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64-debug.zip
913dd6b18ee709131cb67d903beec86eb98b430f4632b2a423c25baffe6d363d  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64-setup-unsigned.exe
34dbeda2d684595de8a3b171ff79fc50d9287df9e153bd332a93cccfb4f1fe3c  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64-unsigned.tar.gz
9e1d73e552eec44fde06d82b5eb72d7f077d68a826c6827f179ca6c25d66ad17  guix-build-219866feca50/output/x86_64-w64-mingw32/bitcoin-219866feca50-win64.zip

Whilst I could get this to build pretty easily (nice work!) I had difficulty with FindBerkeleyDB.cmake picking up my BDB4.8 build from the default location in my source directory on Ubuntu 22.04.

$ pwd
/home/will/src/bitcoin
$ ./contrib/install_db4.sh `pwd`
# outputs db4 directory in /home/will/src/bitcoin/db4
$ cmake -S . -B build
 ...
-- Could NOT find BerkeleyDB (missing: BerkeleyDB_LIBRARY BerkeleyDB_INCLUDE_DIR) (Required is at least version "4.8")
CMake Warning at cmake/optional.cmake:65 (message):
  Berkeley DB (BDB) required for legacy wallet support, but not found.

  Passing "-DWITH_BDB=OFF" will suppress this warning.

Call Stack (most recent call first):
  CMakeLists.txt:420 (include)

In in order to fix I applied this patch:

<details> <summary>Details</summary>

diff --git a/cmake/module/FindBerkeleyDB.cmake b/cmake/module/FindBerkeleyDB.cmake
index 144120126..b1321d5fb 100644
--- a/cmake/module/FindBerkeleyDB.cmake
+++ b/cmake/module/FindBerkeleyDB.cmake
@@ -13,7 +13,7 @@ endif()
 
 find_path(BerkeleyDB_INCLUDE_DIR
   NAMES db.h
-  HINTS ${bdb4_brew_prefix}/include
+  HINTS ${bdb4_brew_prefix}/include $ENV{BerkeleyDB_INCLUDE_DIR}
   PATH_SUFFIXES 4.8 48 4 db4 5 5.3 db5
 )
 
@@ -43,7 +43,7 @@ if(MSVC)
 else()
   find_library(BerkeleyDB_LIBRARY
     NAMES db_cxx-4.8 libdb48 db4_cxx db_cxx db_cxx-5
-    HINTS ${bdb4_brew_prefix}/lib
+    HINTS ${bdb4_brew_prefix}/lib $ENV{BerkeleyDB_LIBRARY}
   )
   set(BerkeleyDB_required BerkeleyDB_LIBRARY)
 endif()

</details>

So that it could pick up exported BDB env vars BerkeleyDB_INCLUDE_DIR and BerkeleyDB_LIBRARY.

I am curious if I was doing something wrong, as it doesn't seem like anyone else had this issue? I am on commit 219866feca50ba1c87388ed118b76f3cb3e41714

@willcl-ark

Whilst I could get this to build pretty easily (nice work!) I had difficulty with FindBerkeleyDB.cmake picking up my BDB4.8 build from the default location in my source directory on Ubuntu 22.04.

In the light of #26834 it seems reasonable to postpone your patch. WDYT?

Updated up to pr25797.40:

• rebased
• added proper finding of python

In the light of #26834 it seems reasonable to postpone your patch. WDYT?

I think it still needs some tweaking, perhaps...

It might not be the most elegant but I was able to get it working "automagically" with:

<details> <summary>this patch</summary>

diff --git a/cmake/module/FindBerkeleyDB.cmake b/cmake/module/FindBerkeleyDB.cmake
index 144120126..4b581ae75 100644
--- a/cmake/module/FindBerkeleyDB.cmake
+++ b/cmake/module/FindBerkeleyDB.cmake
@@ -13,7 +13,7 @@ endif()
 
 find_path(BerkeleyDB_INCLUDE_DIR
   NAMES db.h
-  HINTS ${bdb4_brew_prefix}/include
+  HINTS ${bdb4_brew_prefix}/include BDB_INCLUDE
   PATH_SUFFIXES 4.8 48 4 db4 5 5.3 db5
 )
 
@@ -43,7 +43,7 @@ if(MSVC)
 else()
   find_library(BerkeleyDB_LIBRARY
     NAMES db_cxx-4.8 libdb48 db4_cxx db_cxx db_cxx-5
-    HINTS ${bdb4_brew_prefix}/lib
+    HINTS ${bdb4_brew_prefix}/lib BDB_LIBS
   )
   set(BerkeleyDB_required BerkeleyDB_LIBRARY)
 endif()
diff --git a/depends/toolchain.cmake.in b/depends/toolchain.cmake.in
index 291918497..791b52b1e 100644
--- a/depends/toolchain.cmake.in
+++ b/depends/toolchain.cmake.in
@@ -74,6 +74,8 @@ set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
 set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
 set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
 set(QT_CROSS_LIBS_PATH "${CMAKE_FIND_ROOT_PATH}/lib")
+set(BDB_LIBS "${CMAKE_FIND_ROOT_PATH}/lib")
+set(BDB_INCLUDE "${CMAKE_FIND_ROOT_PATH}/include")
 set(PKG_CONFIG_PATH "${CMAKE_FIND_ROOT_PATH}/lib/pkgconfig")
 if("@allow_host_packages@" STREQUAL "1")
   set(DEPENDS_ALLOW_HOST_PACKAGES TRUE)

</details>

...by running the following:

make -C depends/ NO_BOOST=1 NO_LIBEVENT=1 NO_QT=1 NO_SQLITE=1 NO_NATPMP=1 NO_ZMQ=1 NO_UPNP=1 NO_USDT=1 ALLOW_HOST_PACKAGES=1
cmake --toolchain depends/x86_64-pc-linux-gnu/share/toolchain.cmake -S . -B build

I don't see how it is supposed to pick up the depends BDB lib/include directories otherwise? Are these lines supposed to be handling adding */lib and */include type directories automatically (I couldn't find much documentation on them).

I also didn't test this patch with any of the CI builds or anything, only on my machine.

@willcl-ark

...by running the following:

make -C depends/ NO_BOOST=1 NO_LIBEVENT=1 NO_QT=1 NO_SQLITE=1 NO_NATPMP=1 NO_ZMQ=1 NO_UPNP=1 NO_USDT=1 ALLOW_HOST_PACKAGES=1
cmake --toolchain depends/x86_64-pc-linux-gnu/share/toolchain.cmake -S . -B build

Hmm. On my Ubuntu 22.04 with this PR unpatched branch:

$ make -j 16 -C depends NO_BOOST=1 NO_LIBEVENT=1 NO_QT=1 NO_SQLITE=1 NO_NATPMP=1 NO_UPNP=1 NO_ZMQ=1 NO_USDT=1 ALLOW_HOST_PACKAGES=1
...
copying packages: bdb
to: /home/hebasto/git/bitcoin/depends/x86_64-pc-linux-gnu
make: Leaving directory '/home/hebasto/git/bitcoin/depends'
$ cmake --toolchain depends/x86_64-pc-linux-gnu/share/toolchain.cmake -S . -B build
...
-- Found BerkeleyDB: /home/hebasto/git/bitcoin/depends/x86_64-pc-linux-gnu/lib/libdb_cxx-4.8.a (found suitable version "4.8", minimum required is "4.8")
...

Do you have a clean build environment? Maybe rm -rf build would help?

Are these lines supposed to be handling adding */lib and */include type directories automatically (I couldn't find much documentation on them).

find_library, for example, uses lib as a path component in its searching procedure.

@willcl-ark

Following an approach promoted by @fanquake in #26834, you could also specify a path to the BDB package in a CMake-specfic way as follows:

$ make -C depends NO_BOOST=1 NO_LIBEVENT=1 NO_QT=1 NO_SQLITE=1 NO_NATPMP=1 NO_UPNP=1 NO_ZMQ=1 NO_USDT=1
$ export BerkeleyDB_ROOT=/home/hebasto/git/bitcoin/depends/x86_64-pc-linux-gnu
$ cmake -S . -B build

Do you have a clean build environment?

Correct! It's now working without patch, cool. I'm really enjoying cmake so far.

Updated up to pr25797.42:

• rebased
• added support for libmultiprocess
• 15 of 16 CI tasks have been migrated to CMake -- https://cirrus-ci.com/build/5809175935057920

Guix builds:

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0cee6a8091c25d623ce5a771e053b7660a1926e0d62f396558751553e4938319  guix-build-d3e1ecc1f982/output/x86_64-linux-gnu/SHA256SUMS.part
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cdb5e4b2dea7e0aa17c9d9bf9ddae061ffe7638217d86bdd2fb080bced488521  guix-build-d3e1ecc1f982/output/x86_64-w64-mingw32/bitcoin-d3e1ecc1f982-win64-unsigned.tar.gz
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@ryanofsky

I guess I can try getting multiprocess build to work with this since I don't see a flag for it yet.

Implemented now :)

Concept ACK

Also we could ask people who graduated CS recently whether their curriculums encompassed Autotools and/or CMake

Autotools in HPC/physics with Fortran 77, cmake in CS. I think that says it all.

I'll list my arguments that I have not seen in this discussion before:

• Using interactive configuring with ccmake is a breeze, testing this PR with it is very enjoyable
• Modern IDEs have great cmake support and poor autotools support. Many require an additional compilation database for autotools projects
• Out of tree builds are easier to manage

I am a bit confused about the semantics that distinguish if something is a module or a script in the cmake subdirectory. What is the logic there?

@TheCharlatan

I am a bit confused about the semantics that distinguish if something is a module or a script in the cmake subdirectory. What is the logic there?

• cmake/module:

  • find modules
  • helper functions

• cmake/script:

  • code generation scripts which are supposed to be processed in script mode, i.e., cmake -P <script>. Also see cmake/module/GenerateHeaders.cmake.

Updated up to pr25797.48:

• rebased
• added support for Android hosts
• 16 of 16 CI tasks have been migrated to CMake -- https://cirrus-ci.com/build/5822976705167360

Guix builds:

197c847bcf39b51d7941a34bc41382a0c12290703bb27190f97a6ca9140ae953  guix-build-59cb4dd8f852/output/aarch64-linux-gnu/SHA256SUMS.part
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Updated up to pr25797.50:

• rebased on the current cmake-staging branch (first 19 out of a total of 74 commits)
• some CI regressions need to be fixed

Guix builds:

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80101112c02778c5363451b84fbf38d7a831ffd464ea8c77fe601355baee7e34  guix-build-53c369f5a10b/output/x86_64-linux-gnu/bitcoin-53c369f5a10b-x86_64-linux-gnu-debug.tar.gz
ea76edaed0ea3fb8ce6488674db357cb9e2ea6ebabb0286f88b362771697a509  guix-build-53c369f5a10b/output/x86_64-linux-gnu/bitcoin-53c369f5a10b-x86_64-linux-gnu.tar.gz
e4cb7d579dbecf3044621a9f99b1037527d879e6b603916b8d7f9a2adb8b5f7d  guix-build-53c369f5a10b/output/x86_64-w64-mingw32/SHA256SUMS.part
e3855ecad6f2ba0e145026cca9a2f85480c6f1b6b1d8e969d48174ed6e47260b  guix-build-53c369f5a10b/output/x86_64-w64-mingw32/bitcoin-53c369f5a10b-win64-debug.zip
5e53d7d71481698b0816ca2a48cc72d712bdfc04dc027f669acf2bb96200a2d2  guix-build-53c369f5a10b/output/x86_64-w64-mingw32/bitcoin-53c369f5a10b-win64-setup-unsigned.exe
add543ac6b319e8c2c389408f7cad9aa63356aa03364150b88768bfa41b1f5bd  guix-build-53c369f5a10b/output/x86_64-w64-mingw32/bitcoin-53c369f5a10b-win64-unsigned.tar.gz
e66df3311aa6246089c4aa3778f65ffc5536a7f0e9a5d421bade5ee20a57b110  guix-build-53c369f5a10b/output/x86_64-w64-mingw32/bitcoin-53c369f5a10b-win64.zip

• some CI regressions need to be fixed

The "previous releases" CI task has been fixed.

• some CI regressions need to be fixed

The "fuzzer" and "multiprocess" CI tasks have been fixed.

• some CI regressions need to be fixed

The "tidy" and "TSan" CI tasks have been fixed.

Rebased due to the conflict with bitcoin/bitcoin#27254.

All CI tasks are :green_circle:

Guix builds:

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a7ceb4b814eb41558c5b8dcbe57e443505dac96181b9727fac235197ed729ef8  guix-build-7f09e7118a59/output/aarch64-linux-gnu/bitcoin-7f09e7118a59-aarch64-linux-gnu-debug.tar.gz
b336955cf07c04c69cc03040fab63a5c862c7eb984ae56ddbec9b45345f1af99  guix-build-7f09e7118a59/output/aarch64-linux-gnu/bitcoin-7f09e7118a59-aarch64-linux-gnu.tar.gz
88a7c5b582888fd1cbb2f782f7db66461b922ac0f8dc2cf16883907531182f9c  guix-build-7f09e7118a59/output/arm-linux-gnueabihf/SHA256SUMS.part
eb1a39583367b0d6d7e4dd85442c6a1e892cd3cc15f362b4472837487aaebb6f  guix-build-7f09e7118a59/output/arm-linux-gnueabihf/bitcoin-7f09e7118a59-arm-linux-gnueabihf-debug.tar.gz
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ef98cd91204b5a43cd8cfd89e5d1634c05cc8c6af1fc03dbabd4cff5ebf83a36  guix-build-7f09e7118a59/output/arm64-apple-darwin/bitcoin-7f09e7118a59-arm64-apple-darwin-unsigned.dmg
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9c298807bd893f89fa1eab5bf006377f9a3d5ad9f14bcd339bc4b35fb8437133  guix-build-7f09e7118a59/output/powerpc64-linux-gnu/bitcoin-7f09e7118a59-powerpc64-linux-gnu-debug.tar.gz
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c4a3c945adcd1ed73c8361baf5e769f01913c4fea1443c111798a49cf70c3fa7  guix-build-7f09e7118a59/output/powerpc64le-linux-gnu/bitcoin-7f09e7118a59-powerpc64le-linux-gnu.tar.gz
c216f19d31006cff568c20c4de94f62ba77447dc563e6667c855ffa171d67027  guix-build-7f09e7118a59/output/riscv64-linux-gnu/SHA256SUMS.part
8384074d1f33fb6ab148866c75448cb5ff642018df9f4ebeb20d912796a5921f  guix-build-7f09e7118a59/output/riscv64-linux-gnu/bitcoin-7f09e7118a59-riscv64-linux-gnu-debug.tar.gz
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fced51a5449bb20afd87bb806666c1977a232eec437b4c05db2d399943dedd32  guix-build-7f09e7118a59/output/x86_64-apple-darwin/SHA256SUMS.part
5e78bec524968a10bac4378bf97ee33f07083ae02758d3d9f0af193865e557cd  guix-build-7f09e7118a59/output/x86_64-apple-darwin/bitcoin-7f09e7118a59-x86_64-apple-darwin-unsigned.dmg
673139580ea513f008864248f6cba44f55f1ae789424f09908763ca83f40e59e  guix-build-7f09e7118a59/output/x86_64-apple-darwin/bitcoin-7f09e7118a59-x86_64-apple-darwin-unsigned.tar.gz
55b0f0936fa831f71624d700f30337bd2b8f5a3a73556754c6ce56177ecd1ab3  guix-build-7f09e7118a59/output/x86_64-apple-darwin/bitcoin-7f09e7118a59-x86_64-apple-darwin.tar.gz
f32c51dcdb164bfc5d3d02a4d9fd1351381bc64783a570859c9c1f63e8c175e8  guix-build-7f09e7118a59/output/x86_64-linux-gnu/SHA256SUMS.part
0874a7622869a03af961426b01ca67ab8f4eec3cc5343a27b87dab5ab5fc74bc  guix-build-7f09e7118a59/output/x86_64-linux-gnu/bitcoin-7f09e7118a59-x86_64-linux-gnu-debug.tar.gz
5cff7e564f44cc5b8440ddd89052e2f432b7bb8a577e1ae4aa6a2e107b2ffc40  guix-build-7f09e7118a59/output/x86_64-linux-gnu/bitcoin-7f09e7118a59-x86_64-linux-gnu.tar.gz
e91a91a1d64be61b71e19c5c2964d90430a94add57228207f5cda7fe940abde3  guix-build-7f09e7118a59/output/x86_64-w64-mingw32/SHA256SUMS.part
3a758ceb7c00474fe261b8d8b49521b6f484c5ac5ba5015a101aba3fc83b3d5d  guix-build-7f09e7118a59/output/x86_64-w64-mingw32/bitcoin-7f09e7118a59-win64-debug.zip
15e081d5b5c7432737d99a655ef0202af5bc5b0ec6a5b782f2329088ccea5b55  guix-build-7f09e7118a59/output/x86_64-w64-mingw32/bitcoin-7f09e7118a59-win64-setup-unsigned.exe
9551ebb61378f009b0216cdb00a04940445dc73d62e002f825ed1d0cd1736c05  guix-build-7f09e7118a59/output/x86_64-w64-mingw32/bitcoin-7f09e7118a59-win64-unsigned.tar.gz
2383972fd9fae4f5804b64ff09b975a6ed766550a10a114ac5010572e6670775  guix-build-7f09e7118a59/output/x86_64-w64-mingw32/bitcoin-7f09e7118a59-win64.zip

Updated up to pr25797.59:

Rebased on the current cmake-staging branch (first 25 out of a total of 75 commits).

All CI tasks are :green_circle:

Guix builds:

25a62ef8d51c07799b2fe3f687f2340b9f5cf2523079ed12cdc1bbac07b38188  guix-build-33b2db8e6f7c/output/aarch64-linux-gnu/SHA256SUMS.part
af60d9a558ed74492cdf2697d54c3a25aa236a29721269a0eaa35a37997724bd  guix-build-33b2db8e6f7c/output/aarch64-linux-gnu/bitcoin-33b2db8e6f7c-aarch64-linux-gnu-debug.tar.gz
af96e13399e83c52abd7ef662083dfaa0a65eefe604d9b5120455c7850ce0171  guix-build-33b2db8e6f7c/output/aarch64-linux-gnu/bitcoin-33b2db8e6f7c-aarch64-linux-gnu.tar.gz
550961782fadeb4b3cfa90c8afc2d5817a22c81d807d7dc60a3d96de0d363b4b  guix-build-33b2db8e6f7c/output/arm-linux-gnueabihf/SHA256SUMS.part
98784733b5778b053f4c6c4e39b53a67fe55915ea3f15ffbac124c3e7bcedce9  guix-build-33b2db8e6f7c/output/arm-linux-gnueabihf/bitcoin-33b2db8e6f7c-arm-linux-gnueabihf-debug.tar.gz
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cba90bbd8f6c58fab88a114802cf6c0daa65a9a22ad37e43137e8ecfcb7a1226  guix-build-33b2db8e6f7c/output/arm64-apple-darwin/SHA256SUMS.part
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242156b3435c6fe772455ad5863aa15e9d902f5c1db0bff59554673553ad4713  guix-build-33b2db8e6f7c/output/arm64-apple-darwin/bitcoin-33b2db8e6f7c-arm64-apple-darwin-unsigned.tar.gz
00545ea7be77a9282c748118252706818a83f778b0efac8bb402dba5ee5b0d54  guix-build-33b2db8e6f7c/output/arm64-apple-darwin/bitcoin-33b2db8e6f7c-arm64-apple-darwin.tar.gz
43e58fe001eff44cc80f4aef4c3d2bfb075a0eb5e0d1e86111d3bf7e149136a3  guix-build-33b2db8e6f7c/output/dist-archive/bitcoin-33b2db8e6f7c.tar.gz
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1a39afa1449f80938500f5e47649ccc81d5193b1f7cbb643ca95a15c8d42679e  guix-build-33b2db8e6f7c/output/x86_64-w64-mingw32/bitcoin-33b2db8e6f7c-win64-setup-unsigned.exe
0b43db6e26fbefe93597c9cc33091e63464a7b252ebc38658b681cb3ff098e6a  guix-build-33b2db8e6f7c/output/x86_64-w64-mingw32/bitcoin-33b2db8e6f7c-win64-unsigned.tar.gz
296486c2cbf00dc658a78e90d4ea7584ca1c1d1dd6f38a4f6c161573b7274e27  guix-build-33b2db8e6f7c/output/x86_64-w64-mingw32/bitcoin-33b2db8e6f7c-win64.zip

Updated on top of the recent https://github.com/hebasto/bitcoin/pull/15.

CI build is :green_circle:

Guix builds:

040eb5ee40cf57dcfe34caf8598cd856ac8585565c74386905feccbeb1868830  guix-build-7cc0a620fd74/output/aarch64-linux-gnu/SHA256SUMS.part
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0575f8bd2323cfd44cf5cd700356e43f2b64b61c83145a5478ff5e5abb49e3e8  guix-build-7cc0a620fd74/output/arm-linux-gnueabihf/bitcoin-7cc0a620fd74-arm-linux-gnueabihf-debug.tar.gz
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Rebased on top of the bitcoin/bitcoin#27554.

The CI build is :green_circle:

Rebased using the recent https://github.com/hebasto/bitcoin/pull/15.

The CI build is :green_circle:

Guix builds:

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<!--cf906140f33d8803c4a75a2196329ecb-->

🐙 This pull request conflicts with the target branch and needs rebase.

Closing this PR as its usefulness seems marginal.

Although, I'll keep maintaining this branch.

Reminding that the active reviewing process still happening in https://github.com/hebasto/bitcoin/tree/cmake-staging and related PRs.

we should be able to enumerate some more benefits to doing so.

One more for the list:

• Real out-of-tree builds. Autotools requires autogen to be run in the tree, which can be complicated when you don't want the build to have write access to the source dir.