Go to file
Wladimir J. van der Laan 5b82f253b6
Merge #20195: build: fix mutex detection when building bdb on macOS
d0a829e963 build: fix mutex detection when building bdb on macOS (fanquake)

Pull request description:

  Starting with the Apple Clang shipped with Xcode 12, [Apple has enabled -Werror=implicit-function-declaration by default](https://developer.apple.com/documentation/xcode-release-notes/xcode-12-release-notes):
  > Clang now reports an error when you use a function without an explicit declaration when building C or Objective-C code for macOS (-Werror=implicit-function-declaration flag is on). This additional error detection unifies Clang’s behavior for iOS/tvOS and macOS 64-bit targets for this diagnostic. (49917738)

  This causes bdbs mutex detection to fail when building on macOS (not cross-compiling):
  ```bash
  checking for mutexes... UNIX/fcntl
  configure: WARNING: NO SHARED LATCH IMPLEMENTATION FOUND FOR THIS PLATFORM.
  configure: error: Unable to find a mutex implementation
  ```

  as previously emitted warnings are being turned into errors. i.e:
  ```bash
  configure:18704: checking for mutexes
  configure:18815: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -mmacosx-version-min=10.12 --sysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -o conftest -pipe -O2  -I/Users/michael/github/fanquake-bitcoin/depends/x86_64-apple-darwin19.6.0/include -L/Users/michael/github/fanquake-bitcoin/depends/x86_64-apple-darwin19.6.0/lib conftest.c  -lpthread >&5
  conftest.c:46:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
  main() {
  ^
  conftest.c:51:2: error: implicitly declaring library function 'exit' with type 'void (int) __attribute__((noreturn))' [-Werror,-Wimplicit-function-declaration]
          exit (
          ^
  conftest.c:51:2: note: include the header <stdlib.h> or explicitly provide a declaration for 'exit'
  1 warning and 1 error generated.
  ```

  Append `-Wno-error=implicit-function-declaration` to `cflags` so that `-Wimplicit-function-declaration` [returns to being a warning](https://clang.llvm.org/docs/UsersManual.html#cmdoption-wno-error), and the configure checks succeed.

  Fixes #19411.

ACKs for top commit:
  laanwj:
    Code review ACK d0a829e963

Tree-SHA512: 7813005b1fc0b370f843b6c0672acab32c999416e92c3f02b75d866e9c7aa41fe5822704fc74de6b65f0d7d94f2cdd05cc7c3ee83295ff1ecbc71d8492b9a2bf
2020-10-29 12:31:54 +01:00
.github doc: Remove label from good first issue template 2020-08-24 09:31:24 +02:00
.tx tx: Update transifex slug for 0.21 2020-10-01 22:19:11 +02:00
build-aux/m4 build: AX_PTHREAD serial 27 2020-09-14 16:35:09 +08:00
build_msvc Merge #19953: Implement BIP 340-342 validation (Schnorr/taproot/tapscript) 2020-10-15 10:22:35 +02:00
ci Merge #19953: Implement BIP 340-342 validation (Schnorr/taproot/tapscript) 2020-10-15 10:22:35 +02:00
contrib contrib: Fix gen_key_io_test_vectors.py imports 2020-10-16 13:48:17 +02:00
depends Merge #20195: build: fix mutex detection when building bdb on macOS 2020-10-29 12:31:54 +01:00
doc Merge #20156: build: Make sqlite support optional (compile-time) 2020-10-29 12:03:36 +01:00
share doc: Use precise permission flags where possible 2020-07-10 15:37:42 +02:00
src Merge #20115: cli: -netinfo quick updates/fixups for 0.21 2020-10-29 12:07:31 +01:00
test Merge #19753: p2p: don't add AlreadyHave transactions to recentRejects 2020-10-29 11:40:15 +01:00
.appveyor.yml Bump vcpkg commit ID to get new msys mirror list 2020-10-06 19:17:53 +01:00
.cirrus.yml cirrus: Use kvm to avoid spurious CI failures in the default virtualization cluster 2020-10-08 14:47:21 +02:00
.fuzzbuzz.yml ci: Add fuzzbuzz integration 2020-04-14 16:38:26 +00:00
.gitattributes Separate protocol versioning from clientversion 2014-10-29 00:24:40 -04:00
.gitignore .gitignore: ignore qa-assets/ folder 2020-09-08 02:47:53 -04:00
.python-version .python-version: Specify full version 3.5.6 2019-03-02 12:06:26 -05:00
.style.yapf test: .style.yapf: Set column_limit=160 2019-03-04 18:28:13 -05:00
.travis.yml Squashed 'src/secp256k1/' changes from 8ab24e8dad..c6b6b8f1bb 2020-10-14 11:41:15 -07:00
autogen.sh scripted-diff: Bump copyright of files changed in 2019 2019-12-30 10:42:20 +13:00
CODEOWNERS doc: Add comments and additional reviewers to CODEOWNERS file 2020-09-01 11:23:58 -04:00
configure.ac Make sqlite support optional (compile-time) 2020-10-20 13:44:43 +00:00
CONTRIBUTING.md Replace hidden service with onion service 2020-08-07 14:55:02 +02:00
COPYING doc: Update license year range to 2020 2019-12-26 23:11:21 +01:00
INSTALL.md Update INSTALL landing redirection notice for build instructions. 2016-10-06 12:27:23 +13:00
libbitcoinconsensus.pc.in build: remove libcrypto as internal dependency in libbitcoinconsensus.pc 2019-11-19 15:03:44 +01:00
Makefile.am build: use DIR_FUZZ_SEED_CORPUS if specified for cov_fuzz target 2020-09-08 02:45:42 -04:00
README.md Squashed 'src/secp256k1/' changes from 8ab24e8dad..c6b6b8f1bb 2020-10-14 11:41:15 -07:00
SECURITY.md doc: Remove explicit mention of version from SECURITY.md 2019-06-14 06:39:17 -04:00

Bitcoin Core integration/staging tree

https://bitcoincore.org

What is Bitcoin?

Bitcoin is an experimental digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Bitcoin Core is the name of open source software which enables the use of this currency.

For more information, as well as an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/, or read the original whitepaper.

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, that are run automatically on the build server. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

The Travis CI system makes 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.

Translators should also subscribe to the mailing list.