release: v0.0.17 — macOS self-host via xlings mcpp@0.0.16

- Bump version to 0.0.17
- .xlings.json: mcpp 0.0.16 (macOS-capable bootstrap)
- flags.cppm: explicitly link libc++ on macOS for Clang toolchain
- ci-macos.yml: use `xlings install mcpp` + `mcpp build` (self-host)
- release.yml: macOS job uses xlings mcpp to self-host build

Author: Sunrisepeak

.github/workflows/ci-macos.yml

@@ -268,23 +268,15 @@ jobs:
             *)              echo "FAIL: unexpected platform"; exit 1 ;;
           esac
 
-      - name: Install xmake (for bootstrap)
+      - name: Install mcpp@0.0.16 via xlings
         run: |
-          brew install xmake
-          xmake --version
-
-      - name: Bootstrap mcpp from source (xmake)
-        run: |
-          export LLVM_ROOT="$LLVM_ROOT"
-          bash scripts/bootstrap-macos.sh "$LLVM_ROOT"
-          ./target/bootstrap/bin/mcpp --version
+          xlings install mcpp -y
+          mcpp --version
 
       - name: Self-host (mcpp builds mcpp)
         run: |
-          # Put bootstrapped mcpp on PATH so build.ninja can find it for dyndep
-          export PATH="$PWD/target/bootstrap/bin:$PATH"
           mcpp build
-          SELFHOST=$(find target -path "*/bin/mcpp" -not -path "*/bootstrap/*" -not -path "*/build/*" | head -1)
+          SELFHOST=$(find target -path "*/bin/mcpp" | head -1)
           test -x "$SELFHOST"
           "$SELFHOST" --version
           echo ":: Self-host successful!"

.github/workflows/release.yml

@@ -315,22 +315,17 @@ jobs:
           LLVM_ROOT=$(find "$HOME/.xlings" -path "*/xpkgs/xim-x-llvm/*/bin/clang++" | head -1 | xargs dirname | xargs dirname)
           echo "LLVM_ROOT=$LLVM_ROOT" >> "$GITHUB_ENV"
 
-      - name: Install xmake (for bootstrap)
-        run: brew install xmake
-
-      - name: Bootstrap-compile mcpp (xmake + LLVM)
+      - name: Install mcpp@0.0.16 via xlings
         run: |
-          export LLVM_ROOT="$LLVM_ROOT"
-          bash scripts/bootstrap-macos.sh "$LLVM_ROOT"
-          ./target/bootstrap/bin/mcpp --version
+          export PATH="$HOME/.xlings/subos/default/bin:$PATH"
+          xlings install mcpp -y
+          mcpp --version
 
-      - name: Self-host rebuild (mcpp builds mcpp)
+      - name: Build mcpp (self-host)
         run: |
-          # Put bootstrapped mcpp on PATH so build.ninja can find it for dyndep
-          export PATH="$PWD/target/bootstrap/bin:$PATH"
+          export PATH="$HOME/.xlings/subos/default/bin:$PATH"
           mcpp build
-          # Find the self-hosted binary
-          SELFHOST=$(find target -path "*/bin/mcpp" -not -path "*/bootstrap/*" -not -path "*/build/*" | head -1)
+          SELFHOST=$(find target -path "*/bin/mcpp" | head -1)
           test -x "$SELFHOST"
           "$SELFHOST" --version
           echo "SELFHOST=$SELFHOST" >> "$GITHUB_ENV"
@@ -339,8 +334,8 @@ jobs:
         id: stage
         run: |
           VERSION="${{ steps.resolve.outputs.version }}"
-          TARBALL_NAME="mcpp-${VERSION}-darwin-arm64.tar.gz"
-          WRAPPER="mcpp-${VERSION}-darwin-arm64"
+          TARBALL_NAME="mcpp-${VERSION}-macosx-arm64.tar.gz"
+          WRAPPER="mcpp-${VERSION}-macosx-arm64"
 
           # Create release layout
           STAGING=$(mktemp -d)
@@ -371,10 +366,10 @@ jobs:
           mkdir -p dist
           (cd "$STAGING" && tar -czf "$GITHUB_WORKSPACE/dist/${TARBALL_NAME}" "$WRAPPER")
           # Versionless alias
-          cp "dist/${TARBALL_NAME}" "dist/mcpp-darwin-arm64.tar.gz"
+          cp "dist/${TARBALL_NAME}" "dist/mcpp-macosx-arm64.tar.gz"
           # SHA256
           (cd dist && shasum -a 256 "${TARBALL_NAME}" > "${TARBALL_NAME}.sha256")
-          (cd dist && shasum -a 256 "mcpp-darwin-arm64.tar.gz" > "mcpp-darwin-arm64.tar.gz.sha256")
+          (cd dist && shasum -a 256 "mcpp-macosx-arm64.tar.gz" > "mcpp-macosx-arm64.tar.gz.sha256")
 
           echo "tarball=${TARBALL_NAME}" >> "$GITHUB_OUTPUT"
           ls -la dist/
@@ -394,7 +389,7 @@ jobs:
         with:
           tag_name: ${{ steps.resolve.outputs.tag }}
           files: |
-            dist/mcpp-${{ steps.resolve.outputs.version }}-darwin-arm64.tar.gz
-            dist/mcpp-${{ steps.resolve.outputs.version }}-darwin-arm64.tar.gz.sha256
-            dist/mcpp-darwin-arm64.tar.gz
-            dist/mcpp-darwin-arm64.tar.gz.sha256
+            dist/mcpp-${{ steps.resolve.outputs.version }}-macosx-arm64.tar.gz
+            dist/mcpp-${{ steps.resolve.outputs.version }}-macosx-arm64.tar.gz.sha256
+            dist/mcpp-macosx-arm64.tar.gz
+            dist/mcpp-macosx-arm64.tar.gz.sha256

.xlings.json

@@ -1,6 +1,6 @@
 {
   "workspace": {
-    "mcpp": "0.0.9",
+    "mcpp": "0.0.16",
     "xmake": "3.0.7"
   }
 }

mcpp.toml

@@ -1,6 +1,6 @@
 [package]
 name        = "mcpp"
-version     = "0.0.16"
+version     = "0.0.17"
 description = "Modern C++ build & package management tool"
 license     = "Apache-2.0"
 authors     = ["mcpp-community"]

src/build/flags.cppm

@@ -161,8 +161,15 @@ CompileFlags compute_flags(const BuildPlan& plan) {
         runtime_dirs += " -L" + escape_path(dir);
         runtime_dirs += " -Wl,-rpath," + escape_path(dir);
     }
-    f.ld = std::format("{}{}{}{}{}", full_static, static_stdlib, sysroot_flag, b_flag,
-                       runtime_dirs);
+#if defined(__APPLE__)
+    // macOS: explicitly link libc++ when using Clang with xlings LLVM.
+    // The cfg's -nostdinc++ suppresses the implicit -lc++ that clang++ normally adds.
+    std::string stdlib_link = isClang ? " -lc++" : "";
+#else
+    std::string stdlib_link;
+#endif
+    f.ld = std::format("{}{}{}{}{}{}", full_static, static_stdlib, sysroot_flag, b_flag,
+                       runtime_dirs, stdlib_link);
 
     return f;
 }