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

.cargo/config.toml.offline

@@ -0,0 +1,32 @@
+# Linux
+[target.aarch64-unknown-linux-musl]
+linker = "aarch64-linux-gnu-gcc"
+
+[target.armv7-unknown-linux-musleabihf]
+linker = "arm-linux-gnueabihf-gcc"
+
+[target.powerpc64le-unknown-linux-musl]
+linker = "powerpc64le-linux-gnu-gcc"
+
+[target.riscv64gc-unknown-linux-musl]
+linker = "riscv64-linux-gnu-gcc"
+
+[target.x86_64-unknown-linux-musl]
+linker = "x86-64-linux-gnu-gcc"
+
+# Windows
+[target.x86_64-pc-windows-gnu]
+linker = "x86_64-w64-mingw32-gcc"
+
+# macOS
+# [target.aarch64-apple-darwin]
+# linker = "aarch64-apple-darwin-gcc"
+
+# [target.x86_64-apple-darwin]
+# linker = "x86_64-apple-darwin-gcc"
+
+[source.crates-io]
+replace-with = "vendored-sources"
+
+[source.vendored-sources]
+# The directory for this source is set to RUST_VENDORED_SOURCES by rust/Makefile.am

.github/workflows/build.yml

@@ -63,13 +63,13 @@ jobs:
       file: ./contrib/containers/ci/ci-slim.Dockerfile
       name: dashcore-ci-slim
 
-  depends-arm-linux:
-    name: arm-linux-gnueabihf
+  depends-aarch64-linux:
+    name: aarch64-linux-gnu
     uses: ./.github/workflows/build-depends.yml
     needs: [container, cache-sources]
     if: ${{ vars.SKIP_ARM_LINUX == '' }}
     with:
-      build-target: arm-linux
+      build-target: aarch64-linux
       container-path: ${{ needs.container.outputs.path }}
 
   depends-linux64:
@@ -131,16 +131,16 @@ jobs:
     with:
       container-path: ${{ needs.container-slim.outputs.path }}
 
-  src-arm-linux:
-    name: arm-linux-build
+  src-aarch64-linux:
+    name: aarch64-linux-build
     uses: ./.github/workflows/build-src.yml
-    needs: [container, depends-arm-linux]
+    needs: [container, depends-aarch64-linux]
     with:
-      build-target: arm-linux
+      build-target: aarch64-linux
       container-path: ${{ needs.container.outputs.path }}
-      depends-key: ${{ needs.depends-arm-linux.outputs.key }}
-      depends-host: ${{ needs.depends-arm-linux.outputs.host }}
-      depends-dep-opts: ${{ needs.depends-arm-linux.outputs.dep-opts }}
+      depends-key: ${{ needs.depends-aarch64-linux.outputs.key }}
+      depends-host: ${{ needs.depends-aarch64-linux.outputs.host }}
+      depends-dep-opts: ${{ needs.depends-aarch64-linux.outputs.dep-opts }}
 
   src-linux64:
     name: linux64-build

.github/workflows/guix-build.yml

@@ -71,7 +71,7 @@ jobs:
     runs-on: ubuntu-24.04-arm
     strategy:
       matrix:
-        build_target: [x86_64-linux-gnu, arm-linux-gnueabihf, aarch64-linux-gnu, riscv64-linux-gnu, powerpc64-linux-gnu, x86_64-w64-mingw32, x86_64-apple-darwin, arm64-apple-darwin]
+        build_target: [x86_64-linux-gnu, aarch64-linux-gnu, riscv64-linux-gnu, powerpc64-linux-gnu, x86_64-w64-mingw32, x86_64-apple-darwin, arm64-apple-darwin]
 
     timeout-minutes: 480
     steps:

.gitignore

@@ -175,3 +175,26 @@ test/lint/.cppcheck/*
 # Editor and tooling
 .vscode/
 compile_commands.json
+
+# Generated by Cargo
+# will have compiled files and executables
+debug
+target
+
+# Cargo configuration
+.cargo/.configured-for-*
+.cargo/config
+.cargo/config.toml
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+*.pdb
+
+# Generated by cargo mutants
+# Contains mutation testing data
+**/mutants.out*/
+
+# FFI bridge
+gen