Harden LinuxCNC wasm and native probe workflows

test-linuxcnc-source-objects.sh

@@ -5,11 +5,21 @@ cd "$(dirname "$0")"
 
 linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}
 cxx=${CXX:-g++}
-build_dir=${TMPDIR:-/tmp}/cnc_sim_rs274_objects
+build_dir=$(mktemp -d "${TMPDIR:-/tmp}/cnc_sim_rs274_objects.XXXXXX")
 python_includes=$(python3.13-config --includes 2>/dev/null || python3-config --includes)
+manifest=${1:-linuxcnc-rs274-source-files.txt}
 
-rm -rf "$build_dir"
-mkdir -p "$build_dir"
+if [[ ! -f "$manifest" ]]; then
+    echo "missing manifest: $manifest" >&2
+    exit 1
+fi
+
+if [[ ! -d "$linuxcnc_root" ]]; then
+    echo "missing LinuxCNC root: $linuxcnc_root" >&2
+    exit 1
+fi
+
+trap 'rm -rf "$build_dir"' EXIT
 
 common_flags=(
     -std=c++17
@@ -27,6 +37,10 @@ sources=()
 while IFS=: read -r group path note; do
     case "$group" in
         core)
+            if [[ ! -f "$linuxcnc_root/$path" ]]; then
+                echo "missing manifest file: $path" >&2
+                exit 1
+            fi
             sources+=("$path")
             ;;
         ""|\#*|binding|tooldata)
@@ -36,14 +50,15 @@ while IFS=: read -r group path note; do
             exit 1
             ;;
     esac
-done < linuxcnc-rs274-source-files.txt
+done < "$manifest"
 
+source_index=0
 for source in "${sources[@]}"; do
-    obj="$build_dir/$(basename "$source" .cc).o"
+    obj="$build_dir/linuxcnc_${source_index}.o"
     # shellcheck disable=SC2086
     "$cxx" "${common_flags[@]}" $python_includes -c "$linuxcnc_root/$source" -o "$obj"
+    source_index=$((source_index + 1))
 done
 
 echo "linuxcnc rs274 source object build passed (${#sources[@]} objects)"
 echo "built objects in $build_dir"
-