87744b16b02cb9e4f6e97509facf6cc781e60b98 ci: Fix brew python link (Hennadii Stepanov)
Pull request description:
During the native macOS build on Travis brew-version python update from 3.7.5 to 3.7.6_1 causes link failure:
```
==> Upgrading python3
==> Downloading https://homebrew.bintray.com/bottles/python-3.7.6_1.mojave.bottl
==> Downloading from https://akamai.bintray.com/64/643d627c2b4fc03a3286c397d2992
######################################################################## 100.0%
==> Pouring python-3.7.6_1.mojave.bottle.tar.gz
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
```
Close#17848
Top commit has no ACKs.
Tree-SHA512: 09164805c557e3bd21df2d0765a1c6815e786040e9ec0e81a916b2df6c4f03974cf92c31eca999b997f8c4ed0998bdd6e35c3de7ccbaaed3bf131521ecc637dc
711e0449cf4a0f15cabe0d64094e3add24ad44b0 ci: Remove trusty build (Hennadii Stepanov)
7f3ae224685efaeb6fe714de90e8871d12e55f34 ci: Add CentOS 7 build (Hennadii Stepanov)
Pull request description:
Arguably, CentOS is the most conservative distro of all the popular ones. Thus, it could be a good way to check the Bitcoin Core compatibility with aged dependencies.
Currently, CentOS 7 has:
- Berkeley DB == 4.8.30
- Boost == 1.53.0
- GCC == 4.8.5
- libevent == 2.0.21 < minimum required [2.0.22](https://github.com/bitcoin/bitcoin/blob/master/doc/dependencies.md), but tests passed
- MiniUPnPc == 2.0
- Python == 3.6.8
- qrencode == 3.4.1
- Qt == 5.9.7
- ZeroMQ == 4.1.4
~Please note that this PR is based on the bugfix #17634.~
Also trusty build has been removed for the following reasons:
- https://github.com/bitcoin/bitcoin/issues/17628#issuecomment-559448201:
> Maybe it'd make sense to replace Ubuntu Trusty with Centos 7 as the "check ancient backward compatibililty" Travis run. It's supported until 2024, apparently.
- https://github.com/bitcoin/bitcoin/pull/17635#discussion_r354811792:
> Our travis is currently running at its limit and this doesn't seem like it is adding a lot new coverage compared to the other builds.
Close#17628
ACKs for top commit:
MarcoFalke:
ACK 711e0449cf4a0f15cabe0d64094e3add24ad44b0 🚠
Tree-SHA512: 614ec8394943f482a5867067f7119bffd052924a51e32ffda9a08e10c392c4a955a3539e2f8907cb65bfd9347dadf0ba62f6d1530bbc49927c347360a5a7f73c
fa7523d3aa75b0266015af59901c2397b52265b5 ci: Extend docs (MarcoFalke)
fa493ef08830efe493150d07411af85518959804 ci: Make ci system read-only on the git work tree (MarcoFalke)
fab133329281cdaa3804585a2cdadd0478fefa4f ci: Remove git from required packages on host (MarcoFalke)
fa00393bce0c6128c6188afc7a1d50cc01b0277f ci: Make all filesystem operations inside docker (MarcoFalke)
Pull request description:
Running the ci completely in a docker, without leaving any traces on the host system is not possible right now because the ccache and depends dir needs to be propagated back and picked up by the host for caching.
Fixes#17372
ACKs for top commit:
JeremyRubin:
tested ACK fa7523d3aa75b0266015af59901c2397b52265b5
Tree-SHA512: 4bce1a0f883bcbdb34abf409bdbc80d420c5da2045d2f9c5536ac433f9e5b490f23df084546c8c049f688b487572bbfc4f9c4029e9e672f4d9279739d066ed2e
facc0da63a8fa4bd6fc2782cbe92eb9f920f2256 travis: Run unit and functional tests on native arm (MarcoFalke)
fafa064d2a8dbe24303545ab582ec84cde52ab5b ci: Remove ccache requirement on the host (MarcoFalke)
Pull request description:
This keeps the cross-compilation to make it easy to run the ci on non-arm hardware. To run this locally in qemu-user as it used to be, just `export QEMU_USER_CMD="qemu-arm -L /usr/arm-linux-gnueabihf/"`.
ACKs for top commit:
laanwj:
LGTM ACK facc0da63a8fa4bd6fc2782cbe92eb9f920f2256
practicalswift:
ACK facc0da63a8fa4bd6fc2782cbe92eb9f920f2256 -- diff looks correct and Travis seems happy
Tree-SHA512: 0dc1bc82eb93e2bd8b159e044f20fe3055f8cdfd73aaa238bd2e178397582144dfc0c6a87bd8270115dafea1a623e642bde5d5f30254f94140f1a2cdb12fc2da
45615de26caa4c8ffeacc558143aaf6887cbb314 ci: Fix default retry script usage (Hennadii Stepanov)
Pull request description:
On master (5352d14b3796d9e672a20ada8f7613a70fe448f4) `CI_RETRY_EXE=${CI_RETRY_EXE:retry}` works as a [Substring Expansion](https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html), and that is wrong.
If `CI_RETRY_EXE` variable was unset initially, its new value becomes an empty string, but not "retry" as one could expect. Consequently, the `${CI_RETRY_EXE} ...` command does _not_ use `ci/retry/retry` script.
This PR makes for `CI_RETRY_EXE` variable a usual parameter expansion, i.e., `${parameter:-word}`.
Reference: https://github.com/bitcoin/bitcoin/pull/18735#issuecomment-620095489
Top commit has no ACKs.
Tree-SHA512: 108173f6b2677979b9ddf2f9b9df4a6c56f5efa81c36543a1816bb3b984e42984bf3c83fe413ea3a5ca1e2317c4efb02fea7180a6b44863af7cfe6202e9cf94d
