Harden LinuxCNC wasm and native probe workflows

test-linuxcnc-wasm-python-plugin-link.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+cd "$(dirname "$0")"
+
+linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}
+cxx=${CXX:-g++}
+build_dir=$(mktemp -d "${TMPDIR:-/tmp}/cnc_sim_linuxcnc_wasm_python_plugin_link.XXXXXX")
+
+if [[ ! -d "$linuxcnc_root" ]]; then
+    echo "missing LinuxCNC root: $linuxcnc_root" >&2
+    exit 1
+fi
+trap 'rm -rf "$build_dir"' EXIT
+
+common_flags=(
+    -std=c++17
+    -DULAPI
+    -I "$(pwd)/core/wasm_shims"
+    -I "$linuxcnc_root/src"
+    -I "$linuxcnc_root/src/emc"
+    -I "$linuxcnc_root/src/emc/nml_intf"
+    -I "$linuxcnc_root/src/emc/rs274ngc"
+    -I "$linuxcnc_root/src/emc/motion"
+    -I "$linuxcnc_root/include"
+)
+
+"$cxx" "${common_flags[@]}" \
+    core/wasm_shims/pythonplugin/python_plugin.cc \
+    core/wasm_shims/pythonplugin/python_plugin_probe_main.cc \
+    -o "$build_dir/python_plugin_probe"
+
+"$build_dir/python_plugin_probe"
+
+echo "linuxcnc wasm python_plugin link probe passed"