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build: target aarch64 over armv7, add rudimentary support for Rust components in build system, update to macOS SDK 15.2 (from Xcode 16.0) #7109

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build: target aarch64 over armv7, add rudimentary support for Rust components in build system, update to macOS SDK 15.2 (from Xcode 16.0) #7109

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@kwvg kwvg commented Jan 19, 2026 •
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Additional Information

How Has This Been Tested?

Running dashd or dash-qt should have this entry in their debug log (see below)

[...]
2026-01-19T12:56:31Z Command-line arg: testnet=""
2026-01-19T12:56:31Z chirp 0.1.0 built with rustc 1.85.1 (4eb161250 2025-03-15) reports "cheep cheep"
2026-01-19T12:56:31Z Using at most 125 automatic connections (285 file descriptors available)
2026-01-19T12:56:31Z Using 16 MiB out of 32/2 requested for signature cache, able to store 524288 elements
2026-01-19T12:56:31Z Using 16 MiB out of 32/2 requested for script execution cache, able to store 524288 elements
[...]

Breaking Changes

None expected.

Checklist

  • I have performed a self-review of my own code
  • I have commented my code, particularly in hard-to-understand areas
  • I have added or updated relevant unit/integration/functional/e2e tests
  • I have made corresponding changes to the documentation
  • I have assigned this pull request to a milestone (for repository code-owners and collaborators only)

@kwvg kwvg added this to the 23.1 milestone Jan 19, 2026
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github-actions bot commented Jan 19, 2026 •
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⚠️ Potential Merge Conflicts Detected

This PR has potential conflicts with the following open PRs:

Please coordinate with the authors of these PRs to avoid merge conflicts.

@kwvg kwvg mentioned this pull request Jan 19, 2026
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@kwvg kwvg changed the title build: add build: add rudimentary support for Rust components in build system, update to macOS SDK 15.2 (from Xcode 16.0), target aarch64 over armv7 Jan 19, 2026
@kwvg kwvg changed the title build: add rudimentary support for Rust components in build system, update to macOS SDK 15.2 (from Xcode 16.0), target aarch64 over armv7 build: target aarch64 over armv7, add rudimentary support for Rust components in build system, update to macOS SDK 15.2 (from Xcode 16.0) Jan 19, 2026
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github-actions bot commented Jan 19, 2026

This pull request has conflicts, please rebase.

PastaPastaPasta added a commit that referenced this pull request Jan 24, 2026
@PastaPastaPasta
Merge #6927: backport: merge bitcoin#30423, bitcoin#27038, bitcoin#31048
1ea35a4 
, bitcoin#31099, bitcoin#31172, bitcoin#31450, bitcoin#31608, bitcoin#31818, bitcoin#29881, bitcoin#32458, bitcoin#32400, bitcoin#32760, bitcoin#33178, bitcoin#33312, bitcoin#33780, bitcoin#33181, bitcoin#34102, partial bitcoin#29023, bitcoin#30454, bitcoin#30509, bitcoin#30510, bitcoin#31105, bitcoin#32922, bitcoin#33489, bitcoin#33445 (build backports: part 5)

ad5c299 doc: add release notes (Kittywhiskers Van Gogh)
6350e93 merge bitcoin#34102: capnp 1.3.0 (Kittywhiskers Van Gogh)
e6e4ad0 merge bitcoin#33181: build for Linux HOSTS with `-static-libgcc` (Kittywhiskers Van Gogh)
e403bba merge bitcoin#33780: disable libsanitizer in Linux GCC build (Kittywhiskers Van Gogh)
88108ac partial bitcoin#33445: Update Clang in "tidy" job (Kittywhiskers Van Gogh)
f9686bb partial bitcoin#33489: Drop support for EOL macOS 13 (Kittywhiskers Van Gogh)
4a6de56 merge bitcoin#33312: Disable `UndefinedBinaryOperatorResult` check in `src/ipc` (Kittywhiskers Van Gogh)
00f46c2 merge bitcoin#33178: increase maximum allowed (runtime) GCC to 7 (Kittywhiskers Van Gogh)
49f815d partial bitcoin#32922: use notarized v28.2 binaries and fix macOS detection (Kittywhiskers Van Gogh)
7bf7523 merge bitcoin#32760: capnp 1.2.0 (Kittywhiskers Van Gogh)
369e875 merge bitcoin#32400: Use modern Windows randomness functions (Kittywhiskers Van Gogh)
62cb45b merge bitcoin#32458: move `*-check.py` scripts under `contrib/guix/` (Kittywhiskers Van Gogh)
362013a merge bitcoin#29881: use GCC 13 to build releases (Kittywhiskers Van Gogh)
bfcf58a merge bitcoin#31818: remove test-security/symbol-check scripts (Kittywhiskers Van Gogh)
973eca0 merge bitcoin#31608: Clarify min macOS and Xcode version (Kittywhiskers Van Gogh)
7f80572 merge bitcoin#31450: disable gcov in base-linux-gcc (Kittywhiskers Van Gogh)
e189624 merge bitcoin#31172: increase minimum supported Windows to 10.0 (Kittywhiskers Van Gogh)
8494bd6 partial bitcoin#31105: Update libmultiprocess library (Kittywhiskers Van Gogh)
29c8bd9 merge bitcoin#31099: drop macOS LLVM install instructions (Kittywhiskers Van Gogh)
84b1e17 fix: bump `darwin_cmake_system_version` to match `OSX_MIN_VERSION` (Kittywhiskers Van Gogh)
cdc411d merge bitcoin#31048: Bump minimum supported macOS to 13.0 (Kittywhiskers Van Gogh)
5515a69 partial bitcoin#30510: Add IPC wrapper for Mining interface (Kittywhiskers Van Gogh)
ce6504e merge bitcoin#27038: test for `_FORTIFY_SOURCE` usage in release binaries (Kittywhiskers Van Gogh)
140848d partial bitcoin#30509: Add -ipcbind option to bitcoin-node (Kittywhiskers Van Gogh)
9df31ce partial bitcoin#30454: Introduce CMake-based build system (Kittywhiskers Van Gogh)
310a652 merge bitcoin#30423: simplify `test-security-check` (Kittywhiskers Van Gogh)
3bb0e30 partial bitcoin#29023: add historical release notes for 26.0 (Kittywhiskers Van Gogh)
c725a30 docs: add omitted "Compatibility" heading to release notes template (Kittywhiskers Van Gogh)

Pull request description:

  ## Motivation

  While working on adding support for Rust to our build system (see [dash#7109](#7109)), there were sources of conflict between our current setup and the minimums demanded by Rust and our FFI crate, [`cxx`](https://github.com/dtolnay/cxx). Specifically, Dash Core currently targets building for Windows 7 ([source](https://github.com/dashpay/dash/blob/cc50446936f8436d9ac3a2442bb348d93d8ba314/configure.ac#L818), [`0x601`](https://learn.microsoft.com/en-gb/windows/win32/winprog/using-the-windows-headers)) in direct conflict with the decision by Rusts' maintainers to drop support for Windows 7 effective Rust 1.78 ([source](https://blog.rust-lang.org/2024/02/26/Windows-7/))

  More recent versions of Rust have issues that require additional workarounds (see [`rust-lang/rust#128218`](rust-lang/rust#128218)) to keep support for Windows 7 around and using older versions of Rust is infeasible since both [`cxx`](https://github.com/dtolnay/cxx) and Rust packages currently under evaluation for integration with Dash Core require Rust 1.82+.

  Additionally, non-conformant definitions in the macOS SDK cause issues when attempting to build crates with FFI definitions (see [`dtolnay/cxx#1574`](dtolnay/cxx#1574)) which is resolved by an additional SDK bump that is not in the scope of this PR as it is _above_ the SDK version used upstream but does give cause to also consider a macOS target version bump, which _is_ done by upstream.

  ## Additional Information

  * Dependent on #6919

  * Dependency for #7109

  * macOS 11 (Big Sur) had its support period elapse ~2 years ago ([source](https://endoflife.date/macos)). macOS 14 (Sonoma) is the lowest version of macOS still receiving support from Apple and the new minimum version elected by upstream.

  * Windows 7 had its _extended_ support period elapse ~5 years ago ([source](https://learn.microsoft.com/en-gb/lifecycle/products/windows-7)) with the second lowest version, Windows 8.1, had its _extended_ support period elapse ~2 years ago ([source](https://learn.microsoft.com/en-us/lifecycle/products/windows-81)).

  ## Breaking Changes

  Dash Core binaries will now target Windows 10 and macOS 14 (Sonoma), replacing the previous target Windows 7 and macOS 11 (Big Sur).

  ## Checklist

  - [x] I have performed a self-review of my own code
  - [x] I have commented my code, particularly in hard-to-understand areas **(note: N/A)**
  - [x] I have added or updated relevant unit/integration/functional/e2e tests
  - [x] I have made corresponding changes to the documentation
  - [x] I have assigned this pull request to a milestone _(for repository code-owners and collaborators only)_

ACKs for top commit:
  UdjinM6:
    utACK ad5c299

Tree-SHA512: 650cbc12f2f129770623fd4e62bd7eb77ba0677ae33b765cc8359878633562e2a5c302f86d399400bb798d6a0ac5e6c030f3b8c657b63178f468bbe0d1b246a5
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github-actions bot commented Jan 24, 2026

This pull request has conflicts, please rebase.

kwvg added 4 commits January 24, 2026 22:46
@kwvg
build: make list of cross compilers more explicit, switch to ARMv8
44a6875 
Since the container image could be run on different architectures we
can't implicitly assume that the x86_64 compiler is available, it needs
to be made explicit.

Additionally, we stopped releasing ARMv7 (32-bit) binaries a long time
ago, we should test against ARMv8 (64-bit) instead.
@kwvg
build: add Rust to CI docker image, cross-compile targets
a829b87
@kwvg
build: add minimal stub crate to validate Rust integration
d3c281c
@kwvg
lint: exclude rust/ from linters
3bab316 
Eventually, `rust/` will be hosting primarily subtrees, whose contents
we cannot directly influence, so linting it makes little sense.
kwvg and others added 11 commits January 25, 2026 00:40
@kwvg
build: introduce barebones Autotools integration with Rust
4c6112e
@kwvg
build: propagate SDK version to Rust compiler
7072ae7
@kwvg
build: propagate macOS SDK path to Rust compiler
7ab541b
@kwvg
build: use debug profile for Rust components if --enable-debug set
04f682a
@kwvg @PastaPastaPasta
build: propagate target build variables to Rust components
ffbeb8d 
Co-authored-by: pasta <pasta@dashboost.org>
@kwvg
build: propagate host build variables to Rust components
16a7939 
Needed for cross-compilation to work correctly
@kwvg
debug: Add log that validates successful FFI invocation at init
edfa023 
This can be removed alongside the whole minimal crate when we have
actual crates to slot in.
@kwvg
depends: integrate Rust and cxxbridge into depends
2161d20
@kwvg
build: drop Rust from CI docker image
e7b1fbc 
We're using `depends` to provide us with the Rust compiler and
`cxxbridge`, we can drop it from the CI container and save some space.
@kwvg
depends: add support for vendored crates for offline builds
b9cf9bd
@kwvg
fix: avoid triggering rustup if building from depends
be5c60e
kwvg added 9 commits January 25, 2026 00:40
@kwvg
fix: workaround Directory renamed before its status could be extracted
5163cc8
@kwvg
fix: copy native binaries for access within Guix context
7966f00
@kwvg
fix: patch loader paths to Guix store locations
a571997
@kwvg
refactor: split rust runner (builder) and standard library (cross)
e94f721
@kwvg
build: switch to Rust 1.85.1, use musl stdlib to avoid Guix glibc issues
4dfc2b5 
The conflict occurs due a difference in glibc version between the Guix
environment and the targets compiled, this is only a problem for Linux
targets so the issue doesn't extend to Windows
@kwvg
build: update to macOS 15.2 SDK from Xcode 16.0
aad3628
@kwvg
build: unset C{,PLUS}_INCLUDE_PATH to avoid cross-toolchain conflict
9a6795c 
macOS cross builds need `C{,PLUS}_INCLUDE_PATH` for Qt's native tooling
but causes issues when there are conflicting definitions between the
native and cross toolchains
@kwvg
fix: include resource directory in search path for include resolution
fd7954e 
This is an issue with more recent SDKs (observed from Xcode 15.3 15E204a
shipped SDKs onwards) and explicit inclusion resolves it. We have to use
`:=` to force immediate resolution.
@kwvg
fix: resolve issues with dist builds
68f1157
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