9013e2b97e8f50d2be63ce740c42d0b0e0b9b7f2 Link to gen-bitcoin-conf.sh instead of bitcoin.conf placeholder (Epic Curious)
Pull request description:
Closes#30153.
This PR updates `doc/init.md` to mention generating an example bitcoin.conf instead of referencing the placeholder `share/examples/bitcoin.conf`. Also changes the code-formatted text to a markdown link.
## Background
- Two years ago, `share/examples/bitcoin.conf` was replaced with [a placeholder file](b483084d86). To see an example `bitcoin.conf`, the user now runs the `contrib/devtools/gen-bitcoin-conf.sh` script, which replaces the placeholder file with the parsed contents of `bitcoind --help`.
- The instructions in `init.md` about an example `bitcoin.conf` haven't changed significantly since they were [added almost 10 years ago](234bfbf6a5/doc/init.md (L39)). They should be updated to improve clarity.
ACKs for top commit:
edilmedeiros:
ACK 9013e2b97e8f50d2be63ce740c42d0b0e0b9b7f2
kevkevinpal:
reACK [9013e2b](9013e2b97e)
achow101:
ACK 9013e2b97e8f50d2be63ce740c42d0b0e0b9b7f2
stickies-v:
ACK 9013e2b97e8f50d2be63ce740c42d0b0e0b9b7f2
tdb3:
ACK for 9013e2b97e8f50d2be63ce740c42d0b0e0b9b7f2
Tree-SHA512: 5ac5ad672ad181d574e19e29c3727fb9e5373282444fae09b42d113d5c8915cb2829d496212638cdc4b70540b7e1794a751fcdc9539f956a594cddd70c8fd747
71aae72e1fc998b2629d68a7301d85dc1b65641e test: test sendall does ancestor aware funding (ishaanam)
36757941a05b65c2b61a83820afdf5effd8fc9a2 wallet, rpc: implement ancestor aware funding for sendall (ishaanam)
544131f3fba9ea07fee29f9d3ee0116cd5d8a5b2 rpc, test: test sendall spends unconfirmed change and unconfirmed inputs when specified (ishaanam)
Pull request description:
This PR:
- Adds a functional test that `sendall` spends unconfirmed change
- Adds a functional test that `sendall` spends regular unconfirmed inputs when specified by user
- Adds ancestor aware funding to `sendall` by using `calculateCombinedBumpFee` and adjusting the effective value accordingly
- Adds a functional test for ancestor aware funding in `sendall`
ACKs for top commit:
S3RK:
ACK 71aae72e1fc998b2629d68a7301d85dc1b65641e
achow101:
ACK 71aae72e1fc998b2629d68a7301d85dc1b65641e
furszy:
ACK 71aae72e1f
Tree-SHA512: acaeb7c65166ce53123a1d6cb5012197202246acc02ef9f37a28154cc93afdbd77c25e840ab79bdc7e0b88904014a43ab1ddea79d5337dc310ea210634ab61f0
bd34dd85e7b8b4cc26d2173d84bbeda2e9c27624 Use `exact_target` shorthand in coinselector_tests (Murch)
7aa7e30441fe77bf8e8092916e36b004bbbfe2a7 Fold GetSelectionWaste() into ComputeAndSetWaste() (Murch)
Pull request description:
PR #26152 moved waste calculation into SelectionResult to be able to correct the waste score on basis of the bump_fee_group_discount for overlapping ancestries. This left two functions with largely overlapping purpose, where one was simply a wrapper of the other. This PR cleans up the overlap, and fixes the double-meaning of `change_cost` where the `GetChange()` function assumed that no change was created when `change_cost` was set to 0. This behavior was exploited in a bunch of tests, but is problematic, because a `change_cost` of 0 is permitted with custom settings for feerate and discard_feerate (i.e. when they’re both 0).
ACKs for top commit:
achow101:
ACK bd34dd85e7b8b4cc26d2173d84bbeda2e9c27624
furszy:
Code ACK bd34dd85e7b8b4cc26d2173d84bbeda2e9c27624
ismaelsadeeq:
Code Review ACK bd34dd85e7b8b4cc26d2173d84bbeda2e9c27624
Tree-SHA512: 83a2688d45d719dc61a64b5180fe136107faccf401a59df65245c05d701748a03e85ed56fde8c9b7ef39a3ab54374dd3718c559bda5b3f55dafedfd7fed25161
22d0f1a27ef7733b51b3c2138a8d01713df8f248 [fuzz] Avoid endless waiting in FuzzedSock::{Wait,WaitMany} (marcofleon)
a7fceda68bb62fe3d9060fcf52e33b2f64a2acf9 [fuzz] Make peeking through FuzzedSock::Recv fuzzer friendly (dergoegge)
865cdf3692590bc6b1121524fe1bee188788b791 [fuzz] Use fuzzer friendly ConsumeRandomLengthByteVector in FuzzedSock::Recv (dergoegge)
Pull request description:
`FuzzedSock` has a few issues that block a fuzzer from making progress. See commit messages for details.
ACKs for top commit:
marcofleon:
Tested ACK 22d0f1a27ef7733b51b3c2138a8d01713df8f248
brunoerg:
utACK 22d0f1a27ef7733b51b3c2138a8d01713df8f248
Tree-SHA512: 2d66fc94ba58b6652ae234bd1dcd33b7d685b5054fe83e0cd624b053dd51519c23148f43a865ab8c8bc5fc2dc25e701952831b99159687474978a90348faa4c5
ffbc173ca1ed6b93de8bf3f88b8aed0743f4916c depends: Update Boost download link (Hennadii Stepanov)
Pull request description:
The Boost has [migrated](https://github.com/boostorg/boost-tasks/pull/3) their downloads from from boostorg.jfrog.io to archives.boost.io.
So do we.
FWIW, the download speed at my location is much better :)
ACKs for top commit:
maflcko:
ACK ffbc173ca1ed6b93de8bf3f88b8aed0743f4916c
Tree-SHA512: 3f66675c390510ecfdacf2ac8af4a0a6bdbdf6fbfe01ed66fbe1b11bc9e935709e5492a754711cd788352c5853738fce755afd0c0480f36d0f8af31fcc108263
This method was introduced as a pre-requirement for the v2 transport
protocol back then (see PR #14047, commit 463921bb), when it was still
BIP151. With the replacement BIP324, this is not needed anymore, and
it's also unlikely that any other proposal would need to negate private
keys at this abstraction level.
(If there is really demand, it's trivial to reintroduce the method.)
3c08e11c3ea4499e8d20609e2417cac859b3e98e doc: JSON-RPC request Content-Type is application/json (Luke Dashjr)
Pull request description:
Specify json content type in RPC examples.
Picks up #29946. Which needed rebasing and the commit message fixing,
ACKs for top commit:
laanwj:
ACK 3c08e11c3ea4499e8d20609e2417cac859b3e98e
tdb3:
ACK for 3c08e11c3ea4499e8d20609e2417cac859b3e98e
Tree-SHA512: 770bbbc0fb324cb63628980b13583cabf02e75079851850170587fb6eca41a70b01dcedaf1926bb6488eb9816a3cc6616fe8cee8c4b7e09aa39b7df5834ca0ec
e3249f21111f1dd4beb66f10af933c34a36c30ac fuzz: add more coverage for `ScriptPubKeyMan` (brunoerg)
Pull request description:
This PR adds more coverage for `ScriptPubKeyMan`:
- Check `GetKey` and `HasPrivKey` after adding descriptor key.
- Cover `GetEndRange` and `GetKeyPoolSize`.
- Cover `MarkUnusedAddresses` with the scripts from ScriptPubKeys and `GetMetadata` with the destinations from them.
ACKs for top commit:
marcofleon:
Tested ACK e3249f21111f1dd4beb66f10af933c34a36c30ac. I ran the updated harness for ~9 hours on an empty corpus, generated a coverage report, and checked that the new functions mentioned were hit. Coverage of `scriptpubkeyman.cpp` increased.
murchandamus:
Tested ACK e3249f21111f1dd4beb66f10af933c34a36c30ac
Tree-SHA512: cfab91f6c8401174842e79209c0e9225c08f011fe9b41d0a58bcec716ae4545eaf803867f899ed7b5fbcefea45711f91894e36df082ba19732dd310cd9e61a79
For example:
```bash
ADDITIONAL_GUIX_COMMON_FLAGS set in the ENV
ADDITIONAL_GUIX_ENVIRONMENT_FLAGS="--emulate-fhs" ./contrib/guix/guix-build
<snip>
INFO: Building f75199182133 for platform triple x86_64-linux-gnu:
...using reference timestamp: 1716905119
...running at most 10 jobs
...from worktree directory: '/bitcoin'
...bind-mounted in container to: '/bitcoin'
...in build directory: '/bitcoin/guix-build-f75199182133/distsrc-f75199182133-x86_64-linux-gnu'
...bind-mounted in container to: '/distsrc-base/distsrc-f75199182133-x86_64-linux-gnu'
...outputting in: '/bitcoin/guix-build-f75199182133/output/x86_64-linux-gnu'
...bind-mounted in container to: '/outdir-base/x86_64-linux-gnu'
ADDITIONAL FLAGS (if set)
ADDITIONAL_GUIX_COMMON_FLAGS: --no-substitutes
ADDITIONAL_GUIX_ENVIRONMENT_FLAGS: --emulate-fhs
ADDITIONAL_GUIX_TIMEMACHINE_FLAGS:
```
Currently, when the FuzzedDataProvider of a FuzzedSock runs out of data,
FuzzedSock::Wait and WaitMany will simulate endless waiting as the
requested events are never simulated as occured.
Fix this by simulating event occurence when ConsumeBool() returns false
(e.g. when the data provider runs out).
Co-authored-by: dergoegge <n.goeggi@gmail.com>
FuzzedSock only supports peeking at one byte at a time, which is not
fuzzer friendly when trying to receive long data.
Fix this by supporting peek data of arbitrary length instead of only one
byte.
cbd4640ede92a1a5d7b7c1367eb7c00a9f476c62 build: remove --enable-lcov-branch-coverage (fanquake)
Pull request description:
This supports lcov `2.x` in the sense that we are no-longer hardcoding version specific options, and instead will use the `LCOV_OPTS` variable (which is the more flexible thing to do in any case). It's also quite likely that devs are already having to pass extra options to lcov `2.x`, given it's more stringent in terms of coverage generation and error checking. See this thread for an example: https://github.com/linux-test-project/lcov/issues/238.
Tested on one machine (LCOV 2.0, gcc 13.2) with:
```bash
./autogen.sh
./configure --enable-lcov CXXFLAGS="-fprofile-update=prefer-atomic" LCOV_OPTS="--rc branch_coverage=1 --ignore-errors mismatch"
make
make cov
<snip>
Processing file src/netaddress.cpp
lines=521 hit=480 functions=72 hit=72 branches=675 hit=499
Overall coverage rate:
lines......: 81.8% (79362 of 97002 lines)
functions......: 77.8% (10356 of 13310 functions)
branches......: 49.6% (130628 of 263196 branches)
```
and another machine (LCOV 2.1, Clang 18.1.3) with:
```bash
./autogen.sh
./configure --enable-lcov CC=clang CXX=clang++ LCOV_OPTS="--rc branch_coverage=1 --ignore-errors mismatch,inconsistent"
make
make cov
<snip>
Processing file src/util/strencodings.cpp
lines=315 hit=311 functions=38 hit=38 branches=425 hit=357
Overall coverage rate:
source files: 622
lines.......: 79.8% (70311 of 88132 lines)
functions...: 78.1% (13968 of 17881 functions)
branches....: 44.5% (157551 of 354317 branches)
Message summary:
101 warning messages:
count: 1
inconsistent: 100
3528 ignore messages:
inconsistent: 3528
```
Related to #28468.
ACKs for top commit:
theuni:
utACK cbd4640ede92a1a5d7b7c1367eb7c00a9f476c62
hebasto:
ACK cbd4640ede92a1a5d7b7c1367eb7c00a9f476c62, tested on Ubuntu 22.04.
Tree-SHA512: 94eb01e0e236a480052749f6107b1d0d2e4f6f70a8eefd55fa9ba3d2f72996c9e8a0f28340698b7ac82e7a71e9cf799b7a53ddb6e435e5e9795f5f98a18820f7
8defc182a31d828ad0f53ebf7e3be9e9cfc42d09 scripted-diff: Replace nNextSweep with m_next_sweep (marcofleon)
0048680467e15037023ceae44bc2dc8309f82f39 increase txorphan harness stability (marcofleon)
Pull request description:
This moves `nNextSweep` from being a static variable in `LimitOrphans` to being a member of the `TxOrphanage` class. This improves the stability of the `txorphan` fuzz harness, as each orphanage (created every iteration) now has its own value for `nNextSweep`.
ACKs for top commit:
maflcko:
utACK 8defc182a31d828ad0f53ebf7e3be9e9cfc42d09
dergoegge:
Code review ACK 8defc182a31d828ad0f53ebf7e3be9e9cfc42d09
glozow:
utACK 8defc182a31d828ad0f53ebf7e3be9e9cfc42d09, I can rebase on this pretty easily
Tree-SHA512: 54d4a5074def764f6c895308b94e417662d2f21f157925421131745f22743907df59971f4ce545063658cd74ec133792cdd8df96ae3e69af8314e9b0ff899d48
a27e1ceb9f9c9239af9b0a151c84a57573ea646a depends: consolidate dependency docs (fanquake)
Pull request description:
Adds missing `g++` for macOS. This is needed by Qt:
```bash
Configuring qt...
Creating qmake...
gmake[1]: Entering directory '/bitcoin/depends/work/build/arm64-apple-darwin/qt/5.15.14-4bca24c8f89/qtbase/qmake'
gmake[1]: g++: No such file or directory
gmake[1]: *** [Makefile:250: main.o] Error 127
```
`xz-utils` was also missing (but generally already installed), and is needed for the `.tar.xz` tarballs.
Remove `bsdmainutils`, as this is only needed by the main build system (for tests), and isn't needed to complete a depends build.
ACKs for top commit:
maflcko:
ACK a27e1ceb9f9c9239af9b0a151c84a57573ea646a
Tree-SHA512: 720c31d4d4c9b86fda4aace405d528193714dd3e526f38d5b8a83e4b676a433b9c891f01d86d673be9ac848458eda8a89b0981003a42eaa6d97bacc2e914396a
0a3631fc352eda849290db940844e5ef723436df depends: fix Qt macOS build with Clang 18 (fanquake)
b018bd779dd9b2d46c10254a1cf5b819ae8e027c depends: qt 5.15.14 (fanquake)
Pull request description:
Also adds a patch to Qts internal libpng, to fix compilation using Clang 18, when targetting macOS. I'd like to get this patched, so we can continue working on removing `FORCE_USE_SYSTEM_CLANG` (#30201); otherwise builds will be broken using the default Clang (`18`) on the current Ubuntu LTS (`24.04`).
With this PR, anyone using Ubuntu 24.04 should be able to `apt install clang llvm lld`, and then cross-compile for macOS using:
```bash
# clang --version
Ubuntu clang version 18.1.3 (1)
make -C depends HOST=arm64-apple-darwin FORCE_USE_SYSTEM_CLANG=1
./autogen.sh
CONFIG_SITE=/path/to/depends/arm64-apple-darwin/share/config.site ./configure
make
# file src/qt/bitcoin-qt
src/qt/bitcoin-qt: Mach-O 64-bit arm64 executable, flags:<NOUNDEFS|DYLDLINK|TWOLEVEL|WEAK_DEFINES|BINDS_TO_WEAK|PIE|HAS_TLV_DESCRIPTORS>
```
ACKs for top commit:
TheCharlatan:
ACK 0a3631fc352eda849290db940844e5ef723436df
theuni:
utACK 0a3631fc352eda849290db940844e5ef723436df
hebasto:
ACK 0a3631fc352eda849290db940844e5ef723436df, a new patch indeed fixes cross-compiling on Ubuntu 24.04 with `FORCE_USE_SYSTEM_CLANG=1`.
Tree-SHA512: 711d321b1efbb1aeef802d1d7e72fff8f4e28aa2420d19df9db6f4449fc7d281e1d08ba242ce20122dfe21129e713bd59e7e6ade0b67d7271eea18b39ceb9283
Adds missing `g++` for macOS. This is needed by Qt:
```bash
Configuring qt...
Creating qmake...
gmake[1]: Entering directory '/bitcoin/depends/work/build/arm64-apple-darwin/qt/5.15.14-4bca24c8f89/qtbase/qmake'
gmake[1]: g++: No such file or directory
gmake[1]: *** [Makefile:250: main.o] Error 127
```
`xz-utils` was also missing (but generally already installed), and is
needed for the `.tar.xz` tarballs.
Remove bsdmainutils, as this is only needed by the main build system
(for tests), and isn't needed to complete a depends build.
This removes the need to actually track misbehavior score (see further commit), because any
Misbehaving node will immediately hit the discouragement threshold.
With the Misbehavior score gone for non-connecting headers (see previous
commit), there is no need to only treat headers messages with up to 8
headers as potential BIP130 announcements. BIP130 does not specify such
a limit; it was purely a heuristic.
This misbehavior was originally intended to prevent bandwidth wastage due to
actually observed very broken (but likely non-malicious) nodes that respond
to GETHEADERS with a response unrelated to the request, triggering a request
cycle.
This has however largely been addressed by the previous commit, which causes
non-connecting HEADERS that are received while a GETHEADERS has not been
responded to, to be ignored, as long as they do not time out (2 minutes).
With that, the specific misbehavior is largely irrelevant (for inbound peers,
it is now harmless; for outbound peers, the eviction logic will eventually
kick them out if they're not keeping up with headers at all).
Since https://github.com/bitcoin/bitcoin/pull/25454 we keep track of the last
GETHEADERS request that was sent and wasn't responded to. So far, every incoming
HEADERS message is treated as a response to whatever GETHEADERS was last sent,
regardless of its contents.
This commit makes this tracking more accurate, by only treating HEADERS messages
which (1) are empty, (2) connect to our existing block header tree, or (3) are a
continuation of a low-work headers sync as responses that clear the "outstanding
GETHEADERS" state (m_last_getheaders_timestamp).
That means that HEADERS messages which do not satisfy any of the above criteria
will be ignored, not triggering a GETHEADERS, and potentially (for now, but see
later commit) increase misbehavior score.
4b7d9842691046b01f0c08d69f924ddb62ccc4c6 lint: add markdown hyperlink checker (willcl-ark)
Pull request description:
Potential followup to: #30025
This should prevent us reintroducing broken markdown links.
It does not test "online" (external) links, only those within this repo. Both relative and absolute links are parsed successfully if they resolve.
ACKs for top commit:
maflcko:
re-utACK 4b7d9842691046b01f0c08d69f924ddb62ccc4c6
davidgumberg:
reACK 4b7d984269
Tree-SHA512: 9bc40d700b73499c046bb76157bc139f32ec3850f64ef813bbf7f18f9c01a253abe6a857d6f559890165f2bd26e7742c05d86232cd9b8efb33ff85d735f4f095
Patch Qts internal libpng to resolve the failure.
I would like to have this patched, so we can continue working on the
removal of `FORCE_USE_SYSTEM_CLANG`. Otherwise builds will be broken using
the default clang (18) on the current Ubuntu LTS (24.04).
This supports lcov 2.x in the sense that we are no-longer hardcoding
version specific options, and instead will use the `LCOV_OPTS` variable
(which is the more correct/flexible thing to do in any case). It's also
quite likely that devs are already having to pass extra options to lcov
2.x, given it's more stringent in terms of coverage generation and error
checking. See this thread for an example:
https://github.com/linux-test-project/lcov/issues/238.
Added an example to the developer notes.
Tested on one machine (LCOV 2.0, gcc 13.2) with:
```bash
./autogen.sh
./configure --enable-lcov CXXFLAGS="-fprofile-update=prefer-atomic" LCOV_OPTS="--rc branch_coverage=1 --ignore-errors mismatch"
make
make cov
<snip>
Processing file src/netaddress.cpp
lines=521 hit=480 functions=72 hit=72 branches=675 hit=499
Overall coverage rate:
lines......: 81.8% (79362 of 97002 lines)
functions......: 77.8% (10356 of 13310 functions)
branches......: 49.6% (130628 of 263196 branches)
```
and another machine (LCOV 2.1, Clang 18.1.3) with:
```bash
./autogen.sh
./configure --enable-lcov CC=clang CXX=clang++ LCOV_OPTS="--rc branch_coverage=1 --ignore-errors mismatch,inconsistent"
make
make cov
<snip>
Processing file src/util/strencodings.cpp
lines=315 hit=311 functions=38 hit=38 branches=425 hit=357
Overall coverage rate:
source files: 622
lines.......: 79.8% (70311 of 88132 lines)
functions...: 78.1% (13968 of 17881 functions)
branches....: 44.5% (157551 of 354317 branches)
Message summary:
101 warning messages:
count: 1
inconsistent: 100
3528 ignore messages:
inconsistent: 3528
```
5deb0b024e14c7c63d405c651d1ca323560a1c21 build, test, doc: Temporarily remove Android-related stuff (Hennadii Stepanov)
Pull request description:
Previously, our Android builds were geared towards generating APKs, which relied on Qt. However, after migrating to C++20, compiling for Android became unfeasible due to Qt 5.15's compatibility limitations with NDK only up to r25, which includes an outdated embedded libc++ (see https://github.com/bitcoin/bitcoin/issues/29360).
All removed stuff will be reinstated after migrating the build system to CMake and upgrading Qt to version 6.x.
This PR makes possible a clean migration to the CMake-based build system as it removes code, which is not used at this moment.
ACKs for top commit:
vasild:
ACK 5deb0b024e14c7c63d405c651d1ca323560a1c21
fanquake:
ACK 5deb0b024e14c7c63d405c651d1ca323560a1c21 - given none of this is currently tested/wont compile. Can be revisted in future.
Tree-SHA512: 3bc2ccfe881e11cc1d78c27acd6f1d86cfba86821ef3bb5eca2e80d978fdfa13659ec82284dcaadc507e2394524dea91d4b8f81d0030c1cef9708df8be76bf07
7c8abf3c2001152423da06d25f9f4906611685ea bench: bugfix, properly release wallet before erasing directory (furszy)
Pull request description:
Simple fix for #29816.
Since the wallet is appended to the global `WalletContext` during
creation, merely calling `reset()` on the benchmark shared_pointer
is insufficient to destruct the wallet. This no destruction of the
wallet object results in keeping the db connection open, which
was causes the `fs::remove_all()` failure on Windows.
ACKs for top commit:
maflcko:
utACK 7c8abf3c2001152423da06d25f9f4906611685ea
kevkevinpal:
utACK [7c8abf3](7c8abf3c20)
hebasto:
re-ACK 7c8abf3c2001152423da06d25f9f4906611685ea, I agree with changes since my recent [review](https://github.com/bitcoin/bitcoin/pull/30122#pullrequestreview-2061694682).
Tree-SHA512: 279df65bea8f7aa02af0a2efed62dca9bf9b29cb748eb369c602d223e08a8a907dea7b1bffbd3dab91b1656c1d91b18a9a0534bc3f153bd751414b0e6230b3a4
9ddf39dd87a3729ceedaa05a207621a02c532536 fuzz: Handle missing BDBRO errors (Ava Chow)
Pull request description:
Adds error messages that were not being handled. Also removes error messages that no longer exist.
Fixes#30166
ACKs for top commit:
dergoegge:
reACK 9ddf39dd87a3729ceedaa05a207621a02c532536
TheCharlatan:
ACK 9ddf39dd87a3729ceedaa05a207621a02c532536
Tree-SHA512: 2597536a1e5d030653dfcb02fd892f7492f5a091def787f6cbd421b8bca9544847684a498e9458ea99ae7de5a8a6d91532ff904d1e39222d324939d31d2eb3f0
e8c25e8a35e333e90514945c592557615641553f guix: drop binutils from macOS env (fanquake)
555fddf646265f7e57a416dc64b171f2c9460e20 guix: use GUIX_LD_WRAPPER_DISABLE_RPATH for all HOSTS (fanquake)
9ec238d0f3c7b97aec83dbeb4c7a6950c8f5125e guix: remove ZERO_AR_DATE export (fanquake)
f836f7e9b3e091eb27cdefb624e2a6f2a921fa55 depends: remove cctools & libtapi (fanquake)
4a0536c5d96688729f8c885060c83cb12d72a8c5 build: switch to using lld for macOS builds (fanquake)
c6a6b2d6fd4e3a01b095dc98645f819ebabf1931 build: add lld into macOS build environment(s) (fanquake)
437e908ebd1bf9473ef924de5aec57bdc26de6dd depends: swap cctools-x for llvm-x (fanquake)
bab287d1bab2c02b5fab3285f2678c15316d31c2 depends: don't use -no_warning_for_no_symbols in macOS qt build (fanquake)
Pull request description:
This switches us to using a [LLD](https://lld.llvm.org/) based toolchain for macOS builds.
### Benefits
* Less complicated macOS toolchain.
* No longer beholden to Apple releasing it's [source](https://opensource.apple.com/source/) for [cctools](https://opensource.apple.com/source/cctools/), [ld64](https://opensource.apple.com/source/ld64/) & [libtapi](https://opensource.apple.com/source/tapi/).
* No more reliance on third parties to modify those sources for us. i.e [apple-libtapi](https://github.com/tpoechtrager/apple-libtapi), [cctools-port](https://github.com/tpoechtrager/cctools-port) (cctools + ld64).
ACKs for top commit:
theuni:
Tentative ACK e8c25e8a35e333e90514945c592557615641553f.
Tree-SHA512: ec73304e8a2cd4c71041f7863d7d2e4e0408787299fb4fa3745076853156e8f64e4742e16f30d65e3a27f1e9c0d19cdf802248366b72a4fcb4ea821f92bb7a00
