满庭芳·源流归一

结论：LinuxCNC rs274ngc 源码移植边界继续收拢。已将 rs274ngc 头文件纳入 manifest 跟踪，core 编译组仍只包含可编译源文件；启用 CNC_SIM_ENABLE_LINUXCNC_RS274_BACKEND 时 API 默认使用 LinuxCNC rs274 后端；M428/M429/M430 与 5axis/TRT/TDR/RTCP 相关路径继续保持来自 LinuxCNC 源码或 remap 配置的薄桥接。

验证：./test-linuxcnc-source-syntax.sh；./test-linuxcnc-api-native.sh；./test-native.sh；./test-linuxcnc-source-link.sh。

build-wasm.sh

@@ -6,32 +6,35 @@ cd "$(dirname "$0")"
 linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}
 manifest=${1:-linuxcnc-rs274-wasm-source-files.txt}
 
-if [[ ! -f "$manifest" ]]; then
-    echo "missing manifest: $manifest" >&2
-    exit 1
-fi
-
-if [[ ! -d "$linuxcnc_root" ]]; then
-    echo "missing LinuxCNC root: $linuxcnc_root" >&2
-    exit 1
-fi
+LINUXCNC_ROOT="$linuxcnc_root" ./check-linuxcnc-inputs.sh "$manifest"
 manifest=$(cd "$(dirname "$manifest")" && pwd)/$(basename "$manifest")
 linuxcnc_root=$(cd "$linuxcnc_root" && pwd)
 default_manifest="$PWD/linuxcnc-rs274-wasm-source-files.txt"
 
+count_nonempty_lines() {
+    local text=${1-}
+    local count=0
+    local line
+
+    while IFS= read -r line; do
+        if [[ -n "$line" ]]; then
+            count=$((count + 1))
+        fi
+    done <<<"$text"
+
+    printf '%s\n' "$count"
+}
+
 # This script writes fixed build and public artifact paths, so serialize it.
 exec 9>"${TMPDIR:-/tmp}/cnc_sim_build_wasm.lock"
 flock 9
 
 manifest_core_count=0
 manifest_blocked_count=0
-manifest_core_sources=$(mktemp "${TMPDIR:-/tmp}/cnc_sim_wasm_manifest_core.XXXXXX.txt")
-manifest_blocked_sources=$(mktemp "${TMPDIR:-/tmp}/cnc_sim_wasm_manifest_blocked.XXXXXX.txt")
-trap 'rm -f "$manifest_core_sources" "$manifest_blocked_sources"' EXIT
-LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-wasm-manifest-sources.sh "$manifest" core > "$manifest_core_sources"
-LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-wasm-manifest-sources.sh "$manifest" blocked > "$manifest_blocked_sources"
-manifest_core_count=$(wc -l < "$manifest_core_sources")
-manifest_blocked_count=$(wc -l < "$manifest_blocked_sources")
+manifest_core_output=$(LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-wasm-manifest-sources.sh "$manifest" core)
+manifest_blocked_output=$(LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-wasm-manifest-sources.sh "$manifest" blocked)
+manifest_core_count=$(count_nonempty_lines "$manifest_core_output")
+manifest_blocked_count=$(count_nonempty_lines "$manifest_blocked_output")
 
 if [[ "$manifest_core_count" -eq 0 || "$manifest_blocked_count" -eq 0 ]]; then
     echo "unexpected wasm manifest partition: core=$manifest_core_count blocked=$manifest_blocked_count" >&2