6ef45bc968
73f83036298e4932772704b2d5359c78d81bd7cc ci: Add pip cache (Hennadii Stepanov) 6d480667b24dc630e7c3fe7ff032cbe1a958ab77 ci: Print ccache statistics summary (Hennadii Stepanov) a6eea715ff549febe6d4bd52f17acb50abd99120 ci: Drop unused WINEDEBUG variable (Hennadii Stepanov) Pull request description: The Travis [pip cache](https://docs.travis-ci.com/user/caching/#pip-cache) is free and saves a dozen of seconds :) Here are some excerpts from the Travis logs with `ccache` statistics (I found useful): 2) [Arm64](https://travis-ci.org/github/bitcoin/bitcoin/jobs/673507749) ``` ccache version 3.6 cache directory /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache primary config /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache/ccache.conf secondary config (readonly) /etc/ccache.conf stats updated Fri Apr 10 18:21:06 2020 stats zeroed Fri Apr 10 18:03:04 2020 cache hit (direct) 156 cache hit (preprocessed) 198 cache miss 143 cache hit rate 71.23 % called for link 8 cleanups performed 9 files in cache 1255 cache size 80.6 MB max cache size 100.0 MB ``` 3) [s390x](https://travis-ci.org/github/bitcoin/bitcoin/jobs/673507750) ``` ccache version 3.4.1 cache directory /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache primary config /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache/ccache.conf secondary config (readonly) /etc/ccache.conf stats zero time Fri Apr 10 17:15:35 2020 cache hit (direct) 115 cache hit (preprocessed) 163 cache miss 94 cache hit rate 74.73 % called for link 6 cleanups performed 0 files in cache 804 cache size 304.8 MB max cache size 5.0 GB ``` 4) [Win64](https://travis-ci.org/github/bitcoin/bitcoin/jobs/673507751) ``` ccache version 3.4.1 cache directory /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache primary config /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache/ccache.conf secondary config (readonly) /etc/ccache.conf stats zero time Fri Apr 10 17:38:07 2020 cache hit (direct) 147 cache hit (preprocessed) 199 cache miss 138 cache hit rate 71.49 % called for link 7 cleanups performed 7 files in cache 1242 cache size 87.0 MB max cache size 100.0 MB ``` 5) [CentOS 7](https://travis-ci.org/github/bitcoin/bitcoin/jobs/673507752) ``` ccache version 3.7.7 cache directory /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache primary config /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache/ccache.conf secondary config (readonly) /etc/ccache.conf stats updated Fri Apr 10 17:45:59 2020 stats zeroed Fri Apr 10 17:34:27 2020 cache hit (direct) 152 cache hit (preprocessed) 200 cache miss 144 cache hit rate 70.97 % called for link 8 cleanups performed 4 files in cache 1352 cache size 86.1 MB max cache size 100.0 MB ``` 6) [bionic](https://travis-ci.org/github/bitcoin/bitcoin/jobs/673507753) ``` ccache version 3.4.1 cache directory /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache primary config /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache/ccache.conf secondary config (readonly) /etc/ccache.conf stats zero time Fri Apr 10 17:21:10 2020 cache hit (direct) 136 cache hit (preprocessed) 35 cache miss 330 cache hit rate 34.13 % called for link 8 cleanups performed 18 files in cache 1302 cache size 83.8 MB max cache size 100.0 MB ``` 7) [xenial](https://travis-ci.org/github/bitcoin/bitcoin/jobs/673507754) ``` ccache version 3.2.4 cache directory /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache primary config /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache/ccache.conf secondary config (readonly) /etc/ccache.conf cache hit (direct) 161 cache hit (preprocessed) 174 cache miss 95 called for link 7 files in cache 3411 cache size 1.1 GB max cache size 5.0 GB ``` 10) [focal](https://travis-ci.org/github/bitcoin/bitcoin/jobs/673507757) ``` ccache version 3.7.7 cache directory /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache primary config /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache/ccache.conf secondary config (readonly) /etc/ccache.conf stats updated Fri Apr 10 17:35:57 2020 stats zeroed Fri Apr 10 17:21:32 2020 cache hit (direct) 78 cache hit (preprocessed) 125 cache miss 107 cache hit rate 65.48 % called for link 120 cleanups performed 0 files in cache 6218 cache size 1.8 GB max cache size 5.0 GB ``` 14) [macOS 10.12](https://travis-ci.org/github/bitcoin/bitcoin/jobs/673507761) ``` ccache version 3.4.1 cache directory /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache primary config /home/travis/build/bitcoin/bitcoin/ci/scratch/.ccache/ccache.conf secondary config (readonly) /etc/ccache.conf stats zero time Fri Apr 10 17:47:19 2020 cache hit (direct) 28 cache hit (preprocessed) 1 cache miss 469 cache hit rate 5.82 % called for link 8 cleanups performed 17 files in cache 1946 cache size 82.6 MB max cache size 100.0 MB ``` 15) [macOS 10.14 native](https://travis-ci.org/github/bitcoin/bitcoin/jobs/673507762) ``` ccache version 3.7.8 cache directory /Users/travis/build/bitcoin/bitcoin/ci/scratch/.ccache primary config /Users/travis/build/bitcoin/bitcoin/ci/scratch/.ccache/ccache.conf secondary config (readonly) /usr/local/Cellar/ccache/3.7.8/etc/ccache.conf stats updated Fri Apr 10 17:38:44 2020 stats zeroed Fri Apr 10 17:22:36 2020 cache hit (direct) 213 cache hit (preprocessed) 293 cache miss 144 cache hit rate 77.85 % called for link 11 called for preprocessing 56 compile failed 30 preprocessor error 56 bad compiler arguments 14 autoconf compile/link 77 no input file 66 cleanups performed 0 files in cache 1564 cache size 284.6 MB max cache size 5.0 GB ``` Top commit has no ACKs. Tree-SHA512: f9f2c6d72680bafc7a982efc04dc37ab9bba77ffd2a4cbbc56bb0e86c5c3501d57aa2f0ebeac0113e9d8daac1ee4eac1eddf74c1172c267b37ee2d9324366c8a
Bitcoin Core integration/staging tree
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 and tested, but is not guaranteed to be
completely stable. Tags are created
regularly to indicate new official, stable release versions of Bitcoin Core.
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.