Add WSL Woodpecker cross-build test and prefer bundled headers

.woodpecker.yml

@@ -0,0 +1,23 @@
+when:
+  - event: [push, manual]
+    branch: skia3
+
+labels:
+  platform: linux/amd64
+  backend: local
+
+clone:
+  skip: true
+
+steps:
+  - name: checkout
+    image: bash
+    commands:
+      - git init source
+      - git -C source remote add origin https://git.oeo.one/greepar/StaticLink.Avalonia.git
+      - git -C source fetch --depth=1 origin "$CI_COMMIT_SHA"
+      - git -C source checkout --detach FETCH_HEAD
+  - name: environment-and-linux-x64
+    image: bash
+    commands:
+      - bash source/scripts/woodpecker-cross-test.sh

build/linux-toolchain/zig-cross.py

@@ -69,7 +69,7 @@ def compiler(config, tool, incoming):
     if config.get('linux_abi_headers'):
         args += ['-I' + config['linux_abi_headers']]
     if config.get('linux_headers'):
-        args += ['-I' + config['linux_headers'], '-I' + config['linux_headers'] + '/freetype2']
+        args += ['-idirafter', config['linux_headers'], '-idirafter', config['linux_headers'] + '/freetype2']
     if config.get('linux_sysroot') and '-c' not in incoming and '-o' in incoming:
         root = Path(config['linux_sysroot'])
         cpu = 'x86_64' if target.startswith('x86_64') else 'aarch64'

scripts/woodpecker-cross-test.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+set -euo pipefail
+SCRIPT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$SCRIPT_ROOT"
+TOOLCHAIN_IMAGE="ghcr.io/greepar/staticlink.avalonia-zig@sha256:a88b5ea9f76f659978cda36dda06233d7fdc9121046eedf945044fc908d24b85"
+export CROSS_RID=linux-x64
+RESULTS="${HOME}/staticlink-ci-artifacts/${CI_REPO_NAME:-StaticLink.Avalonia}/${CI_COMMIT_BRANCH:?}/${CI_PIPELINE_NUMBER:?}"
+mkdir -p "$RESULTS/environment"
+df -h .
+free -h
+docker version
+if [ "$(docker info --format '{{.OSType}}/{{.Architecture}}')" != "linux/x86_64" ]; then
+  echo "Requires a Linux x86_64 Docker daemon on the WSL agent" >&2
+  exit 1
+fi
+AVAILABLE_KB="$(df -Pk . | awk 'NR == 2 {print $4}')"
+if [ "$AVAILABLE_KB" -lt 41943040 ]; then
+  echo "Need at least 40 GiB free before pulling the toolchain and compiling; more is recommended" >&2
+  exit 1
+fi
+echo "Persistent test results: $RESULTS"
+exec > >(tee "$RESULTS/build.log") 2>&1
+trap 'result=$?; trap - EXIT; mkdir -p "$RESULTS/native"; if [ -d External/NativeStatic/linux-x64/native ]; then cp -a External/NativeStatic/linux-x64/native/. "$RESULTS/native/"; fi; printf "%s\n" "$result" > "$RESULTS/exit-code"; echo "Results retained at $RESULTS"; exit "$result"' EXIT
+docker pull "$TOOLCHAIN_IMAGE"
+docker run --rm --user "$(id -u):$(id -g)" \
+  -e HOME=/tmp -e DOTNET_CLI_HOME=/tmp -e ZIG_GLOBAL_CACHE_DIR=/tmp/zig-cache \
+  -v "$RESULTS/environment:/validation" --entrypoint python3 \
+  "$TOOLCHAIN_IMAGE" /opt/staticlink/validate-toolchain.py \
+  --output /validation --rids '["linux-x64"]'
+mkdir -p External/NativeStatic/.work/home
+docker run --rm --user "$(id -u):$(id -g)" \
+  -e HOME=/src/External/NativeStatic/.work/home -e CROSS_RID \
+  -e CCACHE_DIR=/src/External/NativeStatic/.work/ccache -e CCACHE_MAXSIZE=1G \
+  -e ZIG_GLOBAL_CACHE_DIR=/src/External/NativeStatic/.work/zig-global \
+  -v "$PWD:/src" -w /src --entrypoint bash "$TOOLCHAIN_IMAGE" -c '
+    set -euo pipefail
+    export SOURCE_LOCK=/src/build/linux-toolchain/sources.lock.json
+    source scripts/prepare-cross-sources.sh
+    python3 build/linux-toolchain/build-cross.py \
+      --target "$CROSS_RID" --sources-manifest "$WORK_DIR/cross-sources.json" \
+      --work /src/External/NativeStatic/.work/toolchains \
+      --output "/src/External/NativeStatic/zig-cross/$SKIASHARP_VERSION/$CROSS_RID" --jobs 4
+    python3 build/linux-toolchain/package-zig.py \
+      --rid "$CROSS_RID" \
+      --input "/src/External/NativeStatic/zig-cross/$SKIASHARP_VERSION/$CROSS_RID" \
+      --output "/src/External/NativeStatic/$CROSS_RID/native"
+  '