每轮只推进合理适量的上下文、禁止顺手扩功能 smoke：源码链接构建约束

test-linuxcnc-bridge-native.sh

@@ -5,31 +5,110 @@ cd "$(dirname "$0")"
 
 linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}
 cxx=${CXX:-g++}
-build_dir=$(mktemp -d "${TMPDIR:-/tmp}/cnc_sim_native.XXXXXX")
+if [[ -z ${CXX:-} ]] && command -v ccache >/dev/null 2>&1; then
+    cxx="ccache $cxx"
+fi
+build_jobs=${CNC_SIM_BUILD_JOBS:-8}
+if ! [[ "$build_jobs" =~ ^[1-9][0-9]*$ ]]; then
+    echo "CNC_SIM_BUILD_JOBS must be a positive integer: $build_jobs" >&2
+    exit 1
+fi
+build_dir=${CNC_SIM_BRIDGE_NATIVE_BUILD_DIR-build/bridge-native-test}
+if [[ -z "$build_dir" ]]; then
+    echo "CNC_SIM_BRIDGE_NATIVE_BUILD_DIR must not be empty" >&2
+    exit 1
+fi
+if [[ "$build_dir" =~ [[:space:]] ]]; then
+    echo "CNC_SIM_BRIDGE_NATIVE_BUILD_DIR must not contain whitespace: $build_dir" >&2
+    exit 1
+fi
+mkdir -p "$build_dir"
+build_dir=$(cd "$build_dir" && pwd)
+if [[ "$build_dir" == "/" ]]; then
+    echo "CNC_SIM_BRIDGE_NATIVE_BUILD_DIR must not be the filesystem root" >&2
+    exit 1
+fi
+exec 9>"$build_dir/bridge-native.lock"
+flock 9
+preflight_cache_dir="$build_dir/preflight-cache"
 
-trap 'rm -rf "$build_dir"' EXIT
-LINUXCNC_ROOT="$linuxcnc_root" ./check-linuxcnc-inputs.sh --root-only
-project_source_list="$build_dir/linuxcnc_bridge_smoke_project_sources.txt"
-./list-linuxcnc-bridge-smoke-project-sources.sh > "$project_source_list"
-mapfile -t project_sources < "$project_source_list"
+LINUXCNC_ROOT="$linuxcnc_root" ./check-linuxcnc-inputs-cached.sh --cache-dir "$preflight_cache_dir" --root-only
+linuxcnc_root=$(cd "$linuxcnc_root" && pwd)
 
 common_flag_output=$(
-    LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-source-common-cxxflags.sh \
+    CNC_SIM_PREFLIGHT_CACHE_DIR="$preflight_cache_dir" \
+        LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-source-common-cxxflags.sh \
         --no-ulapi \
         --core-include \
         --core-src
 )
 mapfile -t common_flags <<<"$common_flag_output"
-link_flag_output=$(LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-native-linkflags.sh)
+link_flag_output=$(CNC_SIM_PREFLIGHT_CACHE_DIR="$preflight_cache_dir" LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-native-linkflags.sh)
 mapfile -t link_flags <<<"$link_flag_output"
+bridge_object_output=$(CNC_SIM_PREFLIGHT_CACHE_DIR="$preflight_cache_dir" LINUXCNC_ROOT="$linuxcnc_root" ./build-linuxcnc-native-bridge-objects.sh)
+mapfile -t bridge_objects <<<"$bridge_object_output"
+project_source_list="$build_dir/linuxcnc_bridge_smoke_project_sources.txt"
+./list-linuxcnc-bridge-smoke-project-sources.sh > "$project_source_list"
 
-"$cxx" "${common_flags[@]}" \
-    "${project_sources[@]}" \
-    core/tests/linuxcnc_canon_bridge_smoke.cpp \
-    "${link_flags[@]}" \
-    -ltooldata \
-    -o "$build_dir/linuxcnc_canon_bridge_smoke"
+objects=()
+main_object="$build_dir/linuxcnc_canon_bridge_smoke.o"
+objects+=("$main_object")
+target="$build_dir/linuxcnc_canon_bridge_smoke"
 
-"$build_dir/linuxcnc_canon_bridge_smoke"
+bridge_signature="$build_dir/bridge-native.signature"
+bridge_next_signature="$build_dir/bridge-native.signature.next"
+{
+    printf 'CXX=%s\n' "$cxx"
+    printf 'PWD=%s\n' "$PWD"
+    printf 'LINUXCNC_ROOT=%s\n' "$linuxcnc_root"
+    printf 'BUILD_RULE_VERSION=1\n'
+    printf 'COMMON_FLAGS='
+    printf ' %s' "${common_flags[@]}"
+    printf '\n'
+    printf 'LINK_FLAGS='
+    printf ' %s' "${link_flags[@]}"
+    printf '\n'
+    printf 'BRIDGE_OBJECTS:\n'
+    printf '%s\n' "${bridge_objects[@]}"
+} > "$bridge_next_signature"
+if [[ ! -f "$bridge_signature" ]] || ! cmp -s "$bridge_signature" "$bridge_next_signature"; then
+    rm -f "$build_dir"/*.d \
+        "$main_object" \
+        "$target"
+fi
+mv "$bridge_next_signature" "$bridge_signature"
+
+bridge_makefile="$build_dir/bridge-native.mk"
+{
+    printf 'CXX := %s\n' "$cxx"
+    printf 'COMMON_FLAGS :='
+    printf ' %s' "${common_flags[@]}"
+    printf '\n'
+    printf 'LINK_FLAGS :='
+    printf ' %s' "${link_flags[@]}"
+    printf '\n'
+    printf 'BRIDGE_OBJECTS :='
+    printf ' %s' "${bridge_objects[@]}"
+    printf '\n'
+    printf 'OBJECTS :='
+    printf ' %s' "${objects[@]}"
+    printf '\n\n'
+    printf 'DEP_FILES :=\n'
+    for object in "${objects[@]}"; do
+        printf 'DEP_FILES += %s.d\n' "$object"
+    done
+    printf '\n.PHONY: all\n'
+    printf 'all: %s\n\n' "$target"
+
+    printf '%s: core/tests/linuxcnc_canon_bridge_smoke.cpp\n' "$main_object"
+    printf '\t@$(CXX) $(COMMON_FLAGS) -MMD -MP -MF %s.d -c core/tests/linuxcnc_canon_bridge_smoke.cpp -o %s\n\n' \
+        "$main_object" "$main_object"
+    printf '%s: $(BRIDGE_OBJECTS) $(OBJECTS)\n' "$target"
+    printf '\t@$(CXX) $(BRIDGE_OBJECTS) $(OBJECTS) $(LINK_FLAGS) -ltooldata -o %s\n\n' "$target"
+    printf '\n-include $(DEP_FILES)\n'
+} > "$bridge_makefile"
+make --output-sync=target -j"$build_jobs" -f "$bridge_makefile"
+
+"$target"
 
 echo "linuxcnc canon bridge smoke passed"