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fanquake 35b01e8504
Merge bitcoin/bitcoin#27676: macOS: Bump minimum required runtime version and prepare for building with upstream LLVM 
3df6070466 contrib: remove macOS lazy_bind check (fanquake)
9bc357e205 build: explicitly opt-in to new fixup_chains functionality for darwin (Cory Fields)
fb61bc0c02 depends: Bump MacOS minimum runtime requirement to 11.0 (Cory Fields)
c2cd47280c depends: bump darwin clang to 11.1 (Cory Fields)

Pull request description:

  This (I believe) resolves the last of the blockers for [switching us away from cctools and instead using out-of-the-box llvm and lld](https://github.com/bitcoin/bitcoin/pull/21778) for building Darwin binaries.

  For now, we continue building with a pre-packaged llvm and cctools, but after this PR the clang+lld combo should just work for anyone trying it. Additionally after this PR, the new runtime `fixup_chains` behavior will be in-use, as ld64 uses it as well.

  The commits may seem unrelated, so in detail:

  lld (llvm's linker) has been a work-in-progress for Darwin for years. Recently though, it has gained nearly all of the features we require. The last missing feature from ld64, `-Wl,-bind_at_load`, is not implemented in lld; as far as I can tell [lazy loading has conceptually been replaced by fixup chains](https://www.emergetools.com/blog/posts/iOS15LaunchTime).

  So that means we don't need ld64's `bind_at_load` as long as lld can handle `-Wl,-fixup_chains` (which it can). I've added it to our configure as a linker option mostly so that we can see it in the logs; it's default-on as long as the minimum version is >11.0.

  About that: the runtime functionality required for `-Wl,-fixup_chains` [requires macOS >=11.0](https://github.com/llvm/llvm-project/blob/release/16.x/lld/MachO/Driver.cpp#L1021). Hence the commit that bumps the minimum version. Our current min runtime of `10.15` has been unsupported since September 2022, so I don't expect this bump to be controversial.

  Lastly, with the minimum runtime version bumped to 11.0, our current version of pre-compiled clang we use for macOS is too old to understand `-mmacosx-version-min=11.0` because it expects `=10.x`. So I've made the smallest possible bump (from 10.0.1 to 11.1.0) to a version that understands. This bump is arbitrary and unfortunate, but likely to be short-lived as we may end up replacing it with llvm+lld for v26 anyway. I've held off on bumping the SDK as I think that makes sense to do as part of the lld switch instead.

ACKs for top commit:
  hebasto:
    ACK 3df6070466
  gruve-p:
    ACK https://github.com/bitcoin/bitcoin/pull/27676/commits/3df60704661cdb5e61ea2b999f468f3a1d16105f
  fanquake:
    ACK 3df6070466
  TheCharlatan:
    ACK 3df6070466

Tree-SHA512: 0200ec4a3b88df33877ae82c15b5c04d745852550923f491a354b391cac65f88e4df116a40055c23a8cbcfcdfb9a376c6ae8fdd0e898e7b966bc213dcb5857cf
2023-06-27 09:57:21 +01:00
.github github: Switch to yaml issue templates 2023-02-21 11:31:16 +00:00
.tx qt: Bump Transifex slug for 25.x 2023-02-27 14:01:14 +00:00
build-aux/m4 Squashed 'src/secp256k1/' changes from 4258c54f4e..705ce7ed8c 2023-06-21 11:04:00 -04:00
build_msvc Enable ellswift module in libsecp256k1 2023-06-23 14:15:49 -04:00
ci Merge bitcoin/bitcoin#27798: depends: modernize clang flags for Darwin 2023-06-22 09:47:30 +01:00
contrib contrib: remove macOS lazy_bind check 2023-06-22 15:28:47 +00:00
depends depends: Bump MacOS minimum runtime requirement to 11.0 2023-06-22 15:28:47 +00:00
doc depends: Bump MacOS minimum runtime requirement to 11.0 2023-06-22 15:28:47 +00:00
share depends: Bump MacOS minimum runtime requirement to 11.0 2023-06-22 15:28:47 +00:00
src Merge bitcoin/bitcoin#27479: BIP324: ElligatorSwift integrations 2023-06-26 17:08:03 -04:00
test Merge bitcoin/bitcoin#27631: test: avoid sporadic MINIMALDATA failure in feature_taproot.py (fixes #27595) 2023-06-23 18:54:06 -04:00
.cirrus.yml depends: Bump MacOS minimum runtime requirement to 11.0 2023-06-22 15:28:47 +00:00
.editorconfig ci: Drop AppVeyor CI integration 2021-09-07 06:12:53 +03:00
.gitattributes Separate protocol versioning from clientversion 2014-10-29 00:24:40 -04:00
.gitignore Squashed 'src/secp256k1/' changes from 4258c54f4e..705ce7ed8c 2023-06-21 11:04:00 -04:00
.python-version Bump python minimum version to 3.8 2023-04-21 10:18:19 +02:00
.style.yapf Update .style.yapf 2023-06-01 23:35:10 +05:30
autogen.sh build: make sure we can overwrite config.{guess,sub} 2023-06-13 14:58:43 +02:00
configure.ac build: explicitly opt-in to new fixup_chains functionality for darwin 2023-06-22 15:28:47 +00:00
CONTRIBUTING.md doc: Explain squashing with merge commits 2022-05-24 08:17:41 +02:00
COPYING doc: Update license year range to 2023 2022-12-24 11:40:16 +01:00
INSTALL.md doc: Added hyperlink for doc/build 2021-09-09 19:53:12 +05:30
libbitcoinconsensus.pc.in build: remove libcrypto as internal dependency in libbitcoinconsensus.pc 2019-11-19 15:03:44 +01:00
Makefile.am Squashed 'src/secp256k1/' changes from 4258c54f4e..705ce7ed8c 2023-06-21 11:04:00 -04:00
README.md doc: Explain Bitcoin Core in README.md 2022-05-10 07:49:09 +02:00
SECURITY.md doc: Add my key to SECURITY.md 2022-08-23 16:57:46 -04:00

README.md

Bitcoin Core integration/staging tree

https://bitcoincore.org

For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.

What is Bitcoin Core?

Bitcoin Core connects to the Bitcoin peer-to-peer network to download and fully validate blocks and transactions. It also includes a wallet and graphical user interface, which can be optionally built.

Further information about Bitcoin Core is available in the doc folder.

License

Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/MIT.

Development Process

The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be completely stable. Tags are created regularly from release branches to indicate new official, stable release versions of Bitcoin Core.

The https://github.com/bitcoin-core/gui repository is used exclusively for the development of the GUI. Its master branch is identical in all monotree repositories. Release branches and tags do not exist, so please do not fork that repository unless it is for development reasons.

The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.

Testing

Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

Automated Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled in configure) with: make check. Further details on running and extending unit tests can be found in /src/test/README.md.

There are also regression and integration tests, written in Python. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

The CI (Continuous Integration) systems make sure that every pull request is built for Windows, Linux, and macOS, and that unit/sanity tests are run automatically.

Manual Quality Assurance (QA) Testing

Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.

Translations

Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.

Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.

Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.