6c97757a48 script: appease spelling linter (Jon Atack)
1316119ce7 script: update ignored-words.txt (Jon Atack)
146c861da2 script: update linter dependencies (Jon Atack)
92408224a4 test: fix PEP484 no implicit optional argument types errors (Jon Atack)
f86a301433 script, test: add missing python type annotations (Jon Atack)
Pull request description:
With these updates, `./test/lint/lint-python.py` and `./test/lint/lint-spelling.py` should be green again for developers using relatively recent Python dependencies, in particular mypy 0.991 (released 11/2022) and later. Please see the commit messages for details.
ACKs for top commit:
fanquake:
ACK 6c97757a48
Tree-SHA512: 8a46a4d36d5978affdcecf4f2ace20ca1b52d483e098304911a2169afe60ccb9b042fa90c04b762d94f3ce53d2cafe6f24476ae839867a770c7f31e7e7242d99
These work for me now. If they still don't work in other setups,
maybe we can better document the issues.
```bash
time FILE_ENV="./ci/test/00_setup_env_s390x.sh" ./ci/test_run_all.sh
...
Running tests: coins_tests from test/coins_tests.cpp
PASS: qt/test/test_bitcoin-qt
Running tests: coinstatsindex_tests from test/coinstatsindex_tests.cpp
...
Stop and remove CI container by ID
+ docker container kill 617bef8accb87530e5fbb03ff07b3b9f0aa9e3030d4da424c9612d153ab98dbf
617bef8accb87530e5fbb03ff07b3b9f0aa9e3030d4da424c9612d153ab98dbf
real 51m37.809s
```
fae7c50d20 test: Run fuzz tests on macOS (MarcoFalke)
Pull request description:
Any reason not to?
ACKs for top commit:
jamesob:
Github ACK fae7c50d20
dergoegge:
utACK fae7c50d20
Tree-SHA512: e45122d73fafb17cea312258314b826cb0745e08daadd28465f687ec02d4c127d2f8cbe20179a9fff5712038850c02c968abb4838fa088b7555e28709317d3a3
32e2ffc393 Remove the syscall sandbox (fanquake)
Pull request description:
After initially being merged in #20487, it's no-longer clear that an internal syscall sandboxing mechanism is something that Bitcoin Core should have/maintain, especially when compared to better maintained/supported alterantives, i.e [firejail](https://github.com/netblue30/firejail).
There is more related discussion in #24771.
Note that given where it's used, the sandbox also gets dragged into the kernel.
If it's removed, this should not require any sort of deprecation, as this was only ever an opt-in, experimental feature.
Closes#24771.
ACKs for top commit:
davidgumberg:
crACK 32e2ffc393
achow101:
ACK 32e2ffc393
dergoegge:
ACK 32e2ffc393
Tree-SHA512: 8cf71c5623bb642cb515531d4a2545d806e503b9d57bfc15a996597632b06103d60d985fd7f843a3c1da6528bc38d0298d6b8bcf0be6f851795a8040d71faf16
Also, fix a few bugs:
* Error: RPC command "enumeratesigners" not found in RPC_COMMANDS_SAFE_FOR_FUZZING or RPC_COMMANDS_NOT_SAFE_FOR_FUZZING. Please update test/fuzz/rpc.cpp.
* in run_once: ...format(" ".join(result.args), ... TypeError: sequence item 2: expected str instance, PosixPath found
cbee1d7091 depends: modernize clang flags (Cory Fields)
2a85857ce5 ci: disable false-positive warnings for now (Cory Fields)
Pull request description:
This is a cleaner and simpler alternative to #25098. Inspired by [this conversation](https://github.com/bitcoin/bitcoin/pull/27737#issuecomment-1562543301). The diff is large but the change itself is quite small.
Fixes builds with llvm >= 11 in guix by working around the problem. As a bonus, this is much cleaner and more maintainable than what we had before.
See the updated comment for more info. At a high level: rather than playing tricks and trying to work around clang's default includes, disable them and re-add what we want.
ACKs for top commit:
fanquake:
ACK cbee1d7091 - tested Guix and the depends cross-compile. Would like to move this along, to unblock #27676, which itself might be a blocker for #27897. Note that macOS might seem somewhat in flux for the moment, but once we finish the migration to LLVM Clang + LLD, things will be must simpler, and ultimately more maintainable.
TheCharlatan:
ACK cbee1d7091
Tree-SHA512: 5a8300be528f550e15ab23d869e77df7a62201c6d40c0384795a9eecee38118a676e0b79b2b76c5e597597181443caada54a01b75a544dbcde76da1deba8e3a4
0000f55293 ci: Run fuzz target even if input folder is empty (MarcoFalke)
Pull request description:
This should catch trivial integer sanitizer bugs if the author and all reviewers forget to look for them.
ACKs for top commit:
brunoerg:
reACK 0000f55293
dergoegge:
reACK 0000f55293
Tree-SHA512: f139b9d56f0cf1aae339c2890721c77c88d1fea77b73d492c1386ec99b4f393c5b664029919ff4a22e4e8a2929f085699a148c6acc2cc3e40df8a72fd39ff474
clang <=17 warns on -nostdlibinc, which causes an error on our -Werror builds.
Note that this breaks the "-fPIE" check in configure because it relies on
catching warnings, but that is not a problem for macOS.
After initially being merged in #20487, it's no-longer clear that an
internal syscall sandboxing mechanism is something that Bitcoin Core
should have/maintain, especially when compared to better
maintained/supported alterantives, i.e firejail.
Note that given where it's used, the sandbox also gets dragged into the
kernel.
There is some related discussion in #24771.
This should not require any sort of deprecation, as this was only ever
an opt-in, experimental feature.
Closes#24771.
5763b232e6 ci: return to using Ubuntu 22.04 in MSAN jobs (fanquake)
d3cbcbf626 ci: compile clang and compiler-rt in MSAN jobs (fanquake)
796bd1d0d1 ci: use LLVM 16.0.4 in MSAN jobs (fanquake)
883bc9f561 ci: remove extra CC & CXX from MSAN jobs (fanquake)
2d4f4b8f29 ci: standardize custom libc++ usage in MSAN jobs (fanquake)
Pull request description:
This reworks the MSAN CIs, to first compile Clang and compiler-rt (using GCC 12), and then, compile an MSAN instrumented libc++ using the just-built Clang 16. This fixes the `native_fuzz_with_msan` job, working around https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1005341, by not using the Debian provided Clang/LLVM.
Also included are changes to streamline how we use our "custom libc++", according to upstream: https://releases.llvm.org/16.0.0/projects/libcxx/docs/UsingLibcxx.html#using-a-custom-built-libc, as well as other minor cleanups in the CI configs.
An example job is currently running in the qa-assets repo: https://github.com/bitcoin-core/qa-assets/pull/129 (https://cirrus-ci.com/task/4632561431871488).
ACKs for top commit:
dergoegge:
utACK 5763b232e6
Tree-SHA512: 4f2a6e0b796bb1830b8346dd1e55eaa86a79037b8b4f16a336c1e29f4fc460acca2ecba076635459370bcbb4009333cb79d27ef1521c1fb5db7599cd5bdf558c
fa3ab45203 ci: Enable float-divide-by-zero check (MarcoFalke)
Pull request description:
Enable it, because
* It is enabled on OSS-Fuzz, so to be able to catch bugs earlier, enable it here as well.
* It makes sense to enable, because when a float is divided by zero, it may be a logic bug in our code, so it should be suppressed in the suppressions file.
ACKs for top commit:
willcl-ark:
utACK fa3ab45203
dergoegge:
ACK fa3ab45203
Tree-SHA512: 2c2c025af4fe3ec267b3cfa38f25495e9da678cf6c529a6438ec923ef09a06ad37fa4503c30cbacc83578ac2856a7f729ef70a24befffd61d10ec075132d1ee0
fa123077bc ci: Use podman for persistent workers (MarcoFalke)
fa9c65a74c ci: Prune dangling images on RESTART_CI_DOCKER_BEFORE_RUN (MarcoFalke)
Pull request description:
This should prevent the persistent workers from running out of disk space. Containers are already removed, but not images. This is required since CI images are built and cached.
ACKs for top commit:
hebasto:
ACK fa123077bc
Tree-SHA512: 07c4faec57d659d1762e4e6d776c882ee48d4bac6ce6d438d56d9ab13277be3e39d6aa38816165a5a3e0938ac5d47674ee2921b6e115a4bb54e3e4910b34c4b6
015cc5e588 lint: stop ignoring LIEF imports (fanquake)
Pull request description:
Type stubs are now available as of 0.13.0.
See https://github.com/lief-project/LIEF/issues/650.
ACKs for top commit:
TheCharlatan:
ACK 015cc5e588
Tree-SHA512: ebb754f293c2a61a0ef64c3552f7c700ceb3054b50fd3f1573e4a9e87773ddeba47bd9875f6ab055043012dbc20aeb71e4d76cd3da535c76651dfb1fbfc66e89
59c8944749 build: disable boost multi index safe mode (willcl-ark)
Pull request description:
Fixes#27586
Disable boost multi index safe mode by default when configuring with
--enable-debug.
This option can cause transactions to take a long time to be accepted
into the mempool under certain conditions; iterator destruction takes
O(n) time vs O(1) as they are stored in a singly linked list. See
27586 and the [boost docs](https://www.boost.org/doc/libs/1_58_0/boost/multi_index/detail/safe_mode.hpp) for more information.
Re-enable it on the CI builds which previously had it enabled.
Re-enable it on the msan fuzz task so that we have fuzz tasks testing
with it enabled and disabled in this repo.
ACKs for top commit:
hebasto:
~ACK 59c89447499bd9d6202269879555b8bc37373aa2~
fanquake:
ACK 59c8944749
Tree-SHA512: ed654f63dbebdd02e4414d1f81147d92a4d490dbb5a2e0376858e3129097645f3a2df45191d6b40c410a76e803b0d28796d1a01c1d2fd995b94e8b7eb3949027
1f97572b9c Fix `#include`s in `src/wallet` (Hennadii Stepanov)
Pull request description:
This PR is a minimum required changes to fix https://github.com/bitcoin/bitcoin/pull/27571#discussion_r1195497290.
ACKs for top commit:
MarcoFalke:
lgtm ACK 1f97572b9c
Tree-SHA512: de885210076d23f3394c42ca50e6ae2470c0ae6523399a2fa3ebb7c06383bdacef9c26166fa19747200396bed796c8772165e24416eb30ed8edd024e3394b2fe
Disable boost multi index safe mode by default when configuring with
--enable-debug.
This option can cause transactions to take a long time to be accepted
into the mempool under certain conditions; iterator destruction takes
O(n) time vs O(1) as they are stored in a singly linked list. See
27586 for more information.
Re-enable it on the CI builds which previously had it enabled.
Re-enable it on the msan fuzz target so that we have fuzz tasks testing
with it enabeld and disabled in this repo.
fa1b3abc83 ci: Log qa-assets repo last commit (MarcoFalke)
fa22966f33 fuzz: Print error message when FUZZ is missing (MarcoFalke)
Pull request description:
Some trivial UX improvements.
* Change the exit code for `PRINT_ALL_FUZZ_TARGETS_AND_ABORT` and `WRITE_ALL_FUZZ_TARGETS_AND_ABORT` to `EXIT_SUCCESS` instead of `Aborted (core dumped)`.
* Print readable error message when `FUZZ` is missing instead of `Aborted (core dumped)`.
* Clarify that a fuzz target needs to be compiled into the executable.
ACKs for top commit:
dergoegge:
ACK fa1b3abc83
Tree-SHA512: 065ef8920449c64b3516f89a61cb397b505eccf531318c4f3830895d5ff6cd7ae2525cb857320481e3d0ed0b2f8a522cd8f7835e69f021241b6ec297a6102fc8
5228223e1f ci: remove MSAN getrandom syscall workaround (fanquake)
d5e06919db random: switch to using getrandom() directly (fanquake)
c2ba3f5b0c random: add [[maybe_unused]] to GetDevURandom (fanquake)
c13c97dbf8 random: getentropy on macOS does not need unistd.h (fanquake)
Pull request description:
This requires a linux kernel of `3.17`+, which seems entirely
reasonable. `3.17` went EOL in 2015, and the last supported `3.x` kernel
(`3.16`) went EOL > 4 years ago, in 2020. For reference, the current
oldest maintained kernel is `4.14` (released 2017, going EOL Jan 2024).
Support for `getrandom()` (and `getentropy()`) was added to
glibc `2.25` https://sourceware.org/legacy-ml/libc-alpha/2017-02/msg00079.html:
> * The getentropy and getrandom functions, and the <sys/random.h> header
file have been added.
and we already require `2.27` or later.
All that being said, I don't think you would encounter a current day (+~6 months from now)
system, running with kernel headers older than 3.17 (released 2014) but also having a
glibc of 2.27+ (released 2018)?
Removing this (our only) use of `syscall()` also means we can drop a workaround in our MSAN jobs.
If this is merged, I'll drop the [same workaround in oss-fuzz](25946a5448/projects/bitcoin-core/build.sh (L49-L56)).
ACKs for top commit:
josibake:
ACK 5228223e1f
hebasto:
ACK 5228223e1f, I've tested build system changes on Ubuntu 22.04 and macOS Monterey 12.6.6 (x86_64).
Tree-SHA512: cc978e08510c461b875ca8c08ae176b4519fa1108f0efd74dcb7474518945357e0184e54423282c9a496de195e4ddc3e221ee78623bd63e24c50cc86acdf32e2
6a936580d1 ci: remove RUN_SECURITY_TESTS (fanquake)
Pull request description:
We no-longer run any security/symbol checks in the CI, and doubt we will in future (if we do, it'll be via Guix, where this var would be redundant in any case). The CI environment doesn't (exactly) match the release build environment (and is semi-regularly changing), and the binaries produced in the CI don't match how we build release binaries, so there is no point trying to run these checks, especially as we add more involved tests, i.e #26953.
ACKs for top commit:
josibake:
code review ACK 6a936580d1
TheCharlatan:
ACK 6a936580d1
Tree-SHA512: c0eec61a4b873bac487ba9321b50116a215b4796bd7d416d98ffcd09969dbf635c2cb5aeb225c89d1e6462838fa2a48565048ebe730f48d76d3db46b64855a91
This is required for the next commit. Also, drop CI_RETRY_EXE before
"dnf install", because it requires getopt, which will only be installed
later on via util-linux
fa199ee614 ci: Drop NO_WERROR=1 for clang-10 build (MarcoFalke)
fad2c200f4 build: Bump minimum Clang to clang-10 (MarcoFalke)
fad7cfee8d doc: Remove outdated CentOS comment (MarcoFalke)
Pull request description:
It doesn't make sense to support a minimum clang version that is difficult to install on all supported operating systems, which generally ship a later version:
* Ubuntu Focal 20.04: https://packages.ubuntu.com/focal/clang-10 and https://packages.ubuntu.com/focal/clang-12
* Debian Bullseye: https://packages.debian.org/bullseye/clang-13
* CentOS 8 Stream: All Clang versions from 11.0 to 15.0
Also, it allows to drop build code, which means it won't waste review when rolling over into cmake (`cmake/module/CheckStdFilesystem.cmake`).
ACKs for top commit:
hebasto:
ACK fa199ee614
fanquake:
ACK fa199ee614
Tree-SHA512: c1a0e8f191a6db866b8be3c9d254dc3f576fa021e2eaaeb68f3354554a8b38eaa90bbf9871ff92351b715e62a6b7b98cf94eba6dc53d7c951bddb6ad49ba7716
ddddf4957b ci: Run iwyu on all src files (MarcoFalke)
Pull request description:
This makes it easier to look at the CI output of a file without having to manually add it first to the list.
ACKs for top commit:
hebasto:
ACK ddddf4957b
Tree-SHA512: 342b52838ae45ea343731c30058cdd5595d5ea5601a1f396de4466ccdd63f7ab07b3a193df3669e4dca7cb535557dcc98f866b3cf986b98176b20ecead123868
We no-longer run any security/syymbol checks in the CI, and doubt we
will in future (if we do, it'll be via Guix, where this var would be
redundant in any case). The CI environment doesn't (exactly) match the
release build environment (and is semi-regularly changing), and the
binaries produced in the CI don't match how we build release binaries,
so there is no point trying to run these checks, especially as we add
more involved tests, i.e #26953.
This partially reverts commit 71383f2fad.
This should be fine, because if warnings are issues again in the future,
it can be disabled again, along with a list of the false warnings.
fad09b703f ci: Remove unused errtrace trap ERR (MarcoFalke)
Pull request description:
This was added in commit 069752b726, presumably at a time when the functional tests wouldn't capture stderr.
Now that all tests capture and print stderr on failure, it can be removed. Reference:
* Unit tests capture via `2>&1`:
d7700d3a26/src/Makefile.test.include (L421)
* Functional tests capture as well:
d7700d3a26/test/functional/test_framework/test_node.py (L356)
ACKs for top commit:
fanquake:
ACK fad09b703f
hebasto:
ACK fad09b703f, tested on Ubuntu 22.04: I can still see warnings from the sanitizers in both unit and functional tests.
Tree-SHA512: 1e786eee432a7a50eb9f78b06b2b157321cc16f91b613e3b476e9e51572592fe4bcf4dc15df176e5f019f24497ac68cf332d2037b55b57498c93f4e19613163c
fa01c3c59c ci: Remove CI_EXEC bloat (MarcoFalke)
fa8a428c92 move-only: Move almost all CI_EXEC code to 06_script_b.sh (MarcoFalke)
Pull request description:
`CI_EXEC` has many issues:
* It is roughly equivalent to `bash -c "$*"`, meaning that the full command will be treated as a single string, ignoring tokens.
* It must be put in front of (almost) every command, making it easy to forget, hard to debug the resulting failure, and the code verbose.
Fix all issues by removing it almost completely.
ACKs for top commit:
TheCharlatan:
ACK fa01c3c59c
Tree-SHA512: 4a65d61f5c35ca945d31f270dba3e96305fd83333a7713f0452c67f02a78e1901113e9f18d21e1dc016403c0033eb32038a9308d0a0ded7ee6b970d18381a1c2
[WARN] The commit is obviously broken and will not run the CI system. In
the rare case this is hit in a git bisect, just skip the commit.
The goal here was to make it trivial to review with the git option:
--color-moved=dimmed-zebra
It is required to move everything into one file because "exit 0" will
otherwise stop working as intended when the containing bash script is no
longer executed with "source ...".
If there is desire to split up 06_script_b.sh into logical chunks in the
future, it will also be easier after the following commit.
Instead of enumerating each passed env var, just pass all. This avoids
the risk of missing to enumerate one. Also, it is less code.
The risk could be that an env var causes non-deterministic behavior, but
this can be fixed by explicitly excluding it once the issue is known.
Values with newlines can not be stored in the file and parsed by
docker/podman, so they are excluded.
fac395e5eb ci: Bump ci/lint/Dockerfile (MarcoFalke)
fa6eb65167 test: Use python3.8 pow() (MarcoFalke)
88881cf7ac Bump python minimum version to 3.8 (MarcoFalke)
Pull request description:
There is no pressing reason to drop support for 3.7, however there are several maintenance issues:
* There is no supported operating system that ships 3.7 by default. (debian:buster is EOL and unmaintained to the extent that it doesn't run in the CI environment. See https://github.com/bitcoin/bitcoin/pull/27340#issuecomment-1484988445)
* Compiling python 3.7 from source is also unsupported on at least macos, according to https://github.com/bitcoin/bitcoin/pull/24017#issuecomment-1107820790
* Recent versions of lief require 3.8, see https://github.com/bitcoin/bitcoin/pull/27507#issuecomment-1517561645
Fix all maintenance issues by bumping the minimum.
ACKs for top commit:
RandyMcMillan:
ACK fac395e
fjahr:
ACK fac395e5eb
fanquake:
ACK fac395e5eb
Tree-SHA512: c198decdbbe29d186d73ea3f6549d8a38479383495d14a965a2f9211ce39637b43f13a4c2a5d3bf56e2d468be4bbe49b4ee8e8e19ec69936ff43ddf2b714c712
be55f545d5 move-only: Extract common/args and common/config.cpp from util/system (TheCharlatan)
Pull request description:
This pull request is part of the `libbitcoinkernel` project https://github.com/bitcoin/bitcoin/issues/24303https://github.com/bitcoin/bitcoin/projects/18 and more specifically its "Step 2: Decouple most non-consensus code from libbitcoinkernel". It is part of a series of patches splitting up the `util/system` files. Its preceding pull request is https://github.com/bitcoin/bitcoin/pull/27254.
The pull request contains an extraction of ArgsManager related functions from util/system into their own common/ file.
The background of this commit is an ongoing effort to decouple the libbitcoinkernel library from the ArgsManager. The ArgsManager belongs into the common library, since the kernel library should not depend on it. See [doc/design/libraries.md](https://github.com/bitcoin/bitcoin/blob/master/doc/design/libraries.md) for more information on this rationale.
ACKs for top commit:
MarcoFalke:
re-ACK be55f545d5🚲
ryanofsky:
Code review ACK be55f545d5. Just small cleanups since the last review.
hebasto:
ACK be55f545d5, I have reviewed the code and it looks OK, I agree it can be merged.
Tree-SHA512: 90eb03334af0155b823030b4f2ecf286d35058d700ee2ddbbaa445be19e31eb0fe982656f35bd14ecee3ad2c3d0db3746855cb8f3777eff7253713e42873e111
This is an extraction of ArgsManager related functions from util/system
into their own common file.
Config file related functions are moved to common/config.cpp.
The background of this commit is an ongoing effort to decouple the
libbitcoinkernel library from the ArgsManager. The ArgsManager belongs
into the common library, since the kernel library should not depend on
it. See doc/design/libraries.md for more information on this rationale.
fa4a46de0b ci: Bump nowallet_libbitcoinkernel task to ubuntu:focal (MarcoFalke)
fabc7d90a9 ci: Use credits in more tasks (MarcoFalke)
facae3b149 ci: Use Cirrus CI dockerfile env (MarcoFalke)
Pull request description:
Currently the CI env has many intermittent issues:
* The Ubuntu package servers are frequently down
* Occasionally other stuff is down, such as dnf, pip, or the android sdk
* Installing packages is slower than downloading them, at least on Cirrus, which has a fast download speed
Fix all issues by using the Cirrus CI dockerfile env.
ACKs for top commit:
josibake:
code review ACK fa4a46de0b
Tree-SHA512: fea5663f7b6dc1c4ea9f87188026ec542b9269bac8ee3398cd58d4df6c86a0af9d275f1876e03f92fb1f6166ec49b817d9e588e6fe1ed54b77592502c2eccd9d
This fixes some cases, i.e under --no-install-recommends, where
libclang-rt-dev wouldn't be installed, and configuring would then fail.
Followup to #27444.
This should avoid errors when running it twice. For example, network
errors on the second invocation of 'apt update'; or unguarded
modifications such as APPEND_APT_SOURCES_LIST, which will append the
same string repeatedly.
The base install may be run twice in Cirrus CI with dockerfiles, or
locally when running twice with DANGER_RUN_CI_ON_HOST specified.
ed4a8339b8 ci: fix git dubious permissions error (josibake)
Pull request description:
fixes https://github.com/bitcoin/bitcoin/pull/27376#issuecomment-1496449588
this appears to be caused by a more recent version of git being sensitive to mismatched permissions on directories. we didn't notice this before because we were using two separate user accounts to fix up dir permissions in the container , but the second account was removed in #27376
there might be a more elegant way to do this, but this does the trick and seems to be the way others are fixing this issue around the internets.
ACKs for top commit:
RandyMcMillan:
ACK ed4a833
hebasto:
re-ACK ed4a8339b8
Tree-SHA512: dad467deca101a24f3ed34b3e26a1db5099a5bd5c3e9c9a22771c59848f7d7e7843c7386348e6fdf86d5a556e4706e5e20005d7a6637193e1c8aef7a5ff7fb19
b5ef1419ec ci: cleanup of CI_EXEC & CI_EXEC_ROOT (refs #27321) (Vasil Stoyanov)
Pull request description:
Basically it removes the above-mentioned env-vars as per MarcoFalke's instructions. The only deviation from the plan laid out there was that I double-quoted the last instance of $ANDROID_HOME for the sake of consistency and future-proofing and the rest of the non-quoted vars due to lint failing the build.
Fixes#27321.
ACKs for top commit:
josibake:
ACK b5ef1419ec
hernanmarino:
untested ACK b5ef1419ec. LGTM
Tree-SHA512: a79776bf64a2fa8b38195cc84445e171fd689f156aac5a1e5d39040300567eb9f4c2ebd00fbf3fa0e55b68793f8f752d94f7d817f6097ed9dd3a8ea57651b981
This is a minimal extraction of a single function, but also the only use
of std::exception in util/system.
The background of this commit is an ongoing effort to decouple the
libbitcoinkernel library from the ArgsManager defined in system.h.
Moving the function out of system.h allows including it from a separate
source file without including the ArgsManager definitions from system.h.
