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fanquake 741749a615
Merge bitcoin/bitcoin#21920: build: improve macro for testing -latomic requirement 
fa25ce45e9 build: improve macro for testing -latomic requirement (MarcoFalke)

Pull request description:

  This fixes the issue where `-latomic` is incorrectly omitted from the linker flags.

  Steps to reproduce on vanilla Ubuntu Focal:

  ```
  export DEBIAN_FRONTEND=noninteractive && apt update && apt install curl wget htop git vim ccache -y && git clone https://github.com/bitcoin/bitcoin.git && cd bitcoin && apt install build-essential libtool autotools-dev automake pkg-config bsdmainutils python3-zmq make automake cmake curl clang llvm g++-multilib libtool binutils-gold bsdmainutils pkg-config python3 patch bison -y  && ( cd depends && make DEBUG=1 HOST=i686-pc-linux-gnu NO_QT=1 NO_WALLET=1 NO_ZMQ=1 NO_UPNP=1 NO_NATPMP=1 -j $(nproc) ) && ./autogen.sh && CONFIG_SITE="$PWD/depends/i686-pc-linux-gnu/share/config.site" ./configure CC='clang -m32' CXX='clang++ -m32' --enable-fuzz --with-sanitizers=fuzzer && make  -j $(nproc)
  ```

  Before:
  ```
  /usr/bin/ld: libbitcoin_server.a(libbitcoin_server_a-net.o): in function `std::atomic<std::chrono::duration<long long, std::ratio<1ll, 1000000ll> > >::load(std::memory_order) const':
  net.cpp:(.text._ZNKSt6atomicINSt6chrono8durationIxSt5ratioILx1ELx1000000EEEEE4loadESt12memory_order[_ZNKSt6atomicINSt6chrono8durationIxSt5ratioILx1ELx1000000EEEEE4loadESt12memory_order]+0x51): undefined reference to `__atomic_load'
  /usr/bin/ld: libbitcoin_server.a(libbitcoin_server_a-net.o): in function `std::atomic<std::chrono::duration<long long, std::ratio<1ll, 1000000ll> > >::store(std::chrono::duration<long long, std::ratio<1ll, 1000000ll> >, std::memory_order)':
  net.cpp:(.text._ZNSt6atomicINSt6chrono8durationIxSt5ratioILx1ELx1000000EEEEE5storeES4_St12memory_order[_ZNSt6atomicINSt6chrono8durationIxSt5ratioILx1ELx1000000EEEEE5storeES4_St12memory_order]+0x5f): undefined reference to `__atomic_store'
  /usr/bin/ld: libbitcoin_server.a(libbitcoin_server_a-net.o): in function `std::atomic<ServiceFlags>::load(std::memory_order) const':
  net.cpp:(.text._ZNKSt6atomicI12ServiceFlagsE4loadESt12memory_order[_ZNKSt6atomicI12ServiceFlagsE4loadESt12memory_order]+0x51): undefined reference to `__atomic_load'
  /usr/bin/ld: libbitcoin_server.a(libbitcoin_server_a-net_processing.o): in function `std::atomic<ServiceFlags>::store(ServiceFlags, std::memory_order)':
  net_processing.cpp:(.text._ZNSt6atomicI12ServiceFlagsE5storeES0_St12memory_order[_ZNSt6atomicI12ServiceFlagsE5storeES0_St12memory_order]+0x6c): undefined reference to `__atomic_store'
  /usr/bin/ld: libbitcoin_server.a(libbitcoin_server_a-net_processing.o): in function `std::atomic<std::chrono::duration<long long, std::ratio<1ll, 1ll> > >::load(std::memory_order) const':
  net_processing.cpp:(.text._ZNKSt6atomicINSt6chrono8durationIxSt5ratioILx1ELx1EEEEE4loadESt12memory_order[_ZNKSt6atomicINSt6chrono8durationIxSt5ratioILx1ELx1EEEEE4loadESt12memory_order]+0x51): undefined reference to `__atomic_load'
  /usr/bin/ld: libbitcoin_server.a(libbitcoin_server_a-net_processing.o): in function `std::atomic<std::chrono::duration<long long, std::ratio<1ll, 1ll> > >::store(std::chrono::duration<long long, std::ratio<1ll, 1ll> >, std::memory_order)':
  net_processing.cpp:(.text._ZNSt6atomicINSt6chrono8durationIxSt5ratioILx1ELx1EEEEE5storeES4_St12memory_order[_ZNSt6atomicINSt6chrono8durationIxSt5ratioILx1ELx1EEEEE5storeES4_St12memory_order]+0x5f): undefined reference to `__atomic_store'
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  ```

  After:

  Clean

ACKs for top commit:
  jarolrod:
    ACK fa25ce45e9
  hebasto:
    ACK fa25ce45e9, tested on Ubuntu 20.04.2 LTS.
  fanquake:
    ACK fa25ce45e9

Tree-SHA512: 7b0e76876c28a4ef8d8cde1ea26c18aeec51da3d54e4da75829276b9b2a259f9d0feab215be0d39e651c6bd89071859bc29aa48131e627e745a828d9f8d4a98e
2021-05-18 20:33:10 +08:00
.github doc: Remove label from good first issue template 2020-08-24 09:31:24 +02:00
.tx qt: Bump transifex slug for 22.x 2021-04-21 13:46:41 +02:00
build-aux/m4 build: improve macro for testing -latomic requirement 2021-05-11 20:07:20 +02:00
build_msvc Merge bitcoin/bitcoin#21817: refactor: Replace &foo[0] with foo.data() 2021-05-05 18:24:09 +02:00
ci Merge bitcoin/bitcoin#21749: test: Bump shellcheck version 2021-05-10 13:49:50 +02:00
contrib Merge bitcoin/bitcoin#21889: macho: check for control flow instrumentation 2021-05-14 12:26:38 +02:00
depends Merge bitcoin/bitcoin#21889: macho: check for control flow instrumentation 2021-05-14 12:26:38 +02:00
doc Merge bitcoin/bitcoin#21947: doc: Fix OSS-Fuzz links 2021-05-16 19:59:27 +10:00
share qt: Extract translations correctly from UTF-8 formatted source 2021-05-17 13:21:13 +02:00
src qt: English translations update 2021-05-17 13:26:29 +02:00
test Merge bitcoin/bitcoin#21905: net: initialize nMessageSize to uint32_t max 2021-05-12 17:39:39 +02:00
.appveyor.yml Update msvc build to use Qt5.12.10 binaries. 2021-04-19 16:41:50 +01:00
.cirrus.yml ci: Bump cirrus fuzz CPUs to avoid timeout 2021-05-12 18:26:37 +02:00
.editorconfig Add EditorConfig file. 2021-02-10 08:00:06 +01:00
.gitattributes Separate protocol versioning from clientversion 2014-10-29 00:24:40 -04:00
.gitignore build: add *~ to .gitignore 2021-05-12 18:10:47 +02:00
.python-version Bump minimum python version to 3.6 2020-11-09 17:53:47 +10:00
.style.yapf test: .style.yapf: Set column_limit=160 2019-03-04 18:28:13 -05:00
autogen.sh scripted-diff: Bump copyright of files changed in 2019 2019-12-30 10:42:20 +13:00
configure.ac fuzz: Remove unused --enable-danger-fuzz-link-all option 2021-05-08 09:32:45 +02:00
CONTRIBUTING.md doc: Clarify that squashing should happen before review 2021-02-22 09:53:01 +01:00
COPYING doc: Update license year range to 2021 2020-12-30 16:24:47 +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: Remove spaces from variable-printing rules 2021-04-05 19:13:54 -04:00
README.md doc: Rework internal and external links 2021-02-17 09:18:46 +01:00
REVIEWERS script: update REVIEWERS 2021-05-03 13:16:43 +02:00
SECURITY.md doc: Remove explicit mention of version from SECURITY.md 2019-06-14 06:39:17 -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/.

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

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 read the original Bitcoin 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. 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.