Enable port-sharded concurrent NP and LR tests

.github/scripts/build-sysio.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+BUILD_JOBS="${1:?usage: build-sysio.sh <build-jobs>}"
+
+echo "Building for ${SYSIO_PLATFORM_NAME:-unknown platform}"
+
+# Use $GITHUB_WORKSPACE (container path /__w/...) so ccache/vcpkg write to
+# the mounted volume and persist for actions/cache to save.
+export CCACHE_DIR="$GITHUB_WORKSPACE/.ccache"
+export VCPKG_BINARY_SOURCES="clear;files,$GITHUB_WORKSPACE/vcpkg-binary-cache,readwrite"
+export VCPKG_TARGET_TRIPLET=x64-linux-release
+export VCPKG_HOST_TRIPLET=x64-linux-release
+export VCPKG_OVERLAY_TRIPLETS="$GITHUB_WORKSPACE/.github/vcpkg-triplets"
+
+# Clean intermediate vcpkg artifacts but preserve binary cache and downloads.
+rm -rf vcpkg/buildtrees vcpkg/packages vcpkg/vcpkg_installed \
+        build/vcpkg_installed ~/.cache/vcpkg ~/.vcpkg
+
+mkdir -p "$GITHUB_WORKSPACE/vcpkg-binary-cache"
+
+./vcpkg/bootstrap-vcpkg.sh
+
+chown -R "$(id -u):$(id -g)" "$PWD"
+
+# Reset ccache stats for this build.
+ccache -z || true
+
+cmake -B build -S . -G Ninja ${SYSIO_PLATFORM_HAS_EXTRAS_CMAKE:+-C /extras.cmake} \
+-DCMAKE_C_COMPILER="$CC" \
+-DCMAKE_CXX_COMPILER="$CXX" \
+-DCMAKE_MAKE_PROGRAM="$CMAKE_MAKE_PROGRAM" \
+-DCMAKE_TOOLCHAIN_FILE="$PWD/vcpkg/scripts/buildsystems/vcpkg.cmake" \
+-DCMAKE_BUILD_TYPE=Release \
+-DVCPKG_TARGET_TRIPLET="$VCPKG_TARGET_TRIPLET" \
+-DVCPKG_HOST_TRIPLET="$VCPKG_HOST_TRIPLET" \
+-DVCPKG_OVERLAY_TRIPLETS="$VCPKG_OVERLAY_TRIPLETS" \
+-DENABLE_CCACHE=ON \
+-DENABLE_TESTS=ON \
+${CMAKE_PREFIX_PATH:+-DCMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH}
+
+cmake --build build -- -j "$BUILD_JOBS"
+
+echo "=== ccache statistics ==="
+ccache -s || true