为了做个iOS长截图功能,我把OpenCV拉下来重新编译了下

CATALYST_FLAGS="--framework_name opencv2 --disable-swift --without python --without java"python3 "$OPENCV_SRC/platforms/osx/build_framework.py" \        "$BUILD_DIR/catalyst" \        --catalyst_archs arm64,x86_64 \        --build_only_specified_archs \        $CATALYST_FLAGS

Undefined symbols for architecture arm64:    "MatToUIImage(cv::Mat const&)", referenced from:        +[MatConverters converMatToUIImage:] in opencv2[arm64][1181](MatConverters.o)    "UIImageToMat(UIImage const*, cv::Mat&, bool)", referenced from:        +[MatConverters convertUIImageToMat:alphaExist:] in opencv2[arm64][1181](MatConverters.o)  ld: symbol(s) not found for architecture arm64

// 原代码（错误）#if (TARGET_OS_IOS || TARGET_OS_VISION) && !TARGET_OS_MACCATALYST

python3 "$OPENCV_SRC/platforms/osx/build_framework.py" \    "$BUILD_DIR/catalyst" \    --catalyst_archs arm64 \    --build_only_specified_archs \    --framework_name opencv2 --disable-swift --without python --without java --iphoneos_deployment_target 12.0

git clone --depth 1 --branch 4.13.0 https://github.com/opencv/opencv.git opencv_src

# 清理旧的 Catalyst 构建产物（如果存在）rm -rf build_manual# 运行编译脚本./build_opencv.sh

#!/bin/bashset -e# Directory setupBASE_DIR="$(cd "$(dirname "$0")" && pwd)"OPENCV_SRC="$BASE_DIR/opencv_src"BUILD_DIR="$BASE_DIR/build_manual"# Output directory is the same as the script directoryOUTPUT_DIR="$BASE_DIR"echo "=============================================================="echo "OpenCV XCFramework Builder (iOS + Simulator + Catalyst)"echo "Base Directory: $BASE_DIR"echo "=============================================================="# 1. Prepare Sourceif [ ! -d "$OPENCV_SRC" ]; then    echo "Cloning OpenCV source..."    git clone --depth 1 --branch 4.13.0 https://github.com/opencv/opencv.git "$OPENCV_SRC"else    echo "OpenCV source found at $OPENCV_SRC"fi# Clean previous buildsmkdir -p "$BUILD_DIR"# mkdir -p "$OUTPUT_DIR" # No need to create base dir as it exists# Check if XCFramework already existsif [ -d "$OUTPUT_DIR/opencv2.xcframework" ]; then    echo "Found existing opencv2.xcframework, skipping build steps..."    SKIP_BUILD=trueelse    SKIP_BUILD=falsefi# Common Flags# --without objc is added to disable ObjC bindings (C++ only)# --disable-swift is added to disable Swift bindings (C++ only)# We strictly control architectures to arm64 to avoid x86 issues and lipo failuresCOMMON_FLAGS="--framework_name opencv2 --disable-swift --without python --without java --iphoneos_deployment_target 12.0"if [ "$SKIP_BUILD" = false ]; thenecho ""echo "--------------------------------------------------------------"echo "STEP 1: Building for iOS Device (arm64)"echo "--------------------------------------------------------------"if [ -d "$BUILD_DIR/ios_device/opencv2.framework" ]; then    echo "Skipping iOS Device build (already exists)"else    python3 "$OPENCV_SRC/platforms/ios/build_framework.py" \        "$BUILD_DIR/ios_device" \        --iphoneos_archs arm64 \        --build_only_specified_archs \        $COMMON_FLAGSfifi # End of SKIP_BUILD checkif [ "$SKIP_BUILD" = false ]; thenecho ""echo "--------------------------------------------------------------"echo "STEP 2: Building for iOS Simulator (arm64)"echo "--------------------------------------------------------------"if [ -d "$BUILD_DIR/ios_sim/opencv2.framework" ]; then    echo "Skipping iOS Simulator build (already exists)"else    python3 "$OPENCV_SRC/platforms/ios/build_framework.py" \        "$BUILD_DIR/ios_sim" \        --iphonesimulator_archs arm64 \        --build_only_specified_archs \        $COMMON_FLAGSfifi # End of SKIP_BUILD checkif [ "$SKIP_BUILD" = false ]; thenecho ""echo "--------------------------------------------------------------"echo "STEP 3: Building for Mac Catalyst (arm64, x86_64)"echo "--------------------------------------------------------------"if [ -d "$BUILD_DIR/catalyst/opencv2.framework" ]; then    echo "Skipping Mac Catalyst build (already exists)"else    # Remove iOS specific flags for Catalyst build    CATALYST_FLAGS="--framework_name opencv2 --disable-swift --without python --without java"    python3 "$OPENCV_SRC/platforms/osx/build_framework.py" \        "$BUILD_DIR/catalyst" \        --catalyst_archs arm64,x86_64 \        --build_only_specified_archs \        $CATALYST_FLAGSfifi # End of SKIP_BUILD checkif [ "$SKIP_BUILD" = false ]; thenecho ""echo "--------------------------------------------------------------"echo "STEP 4: Creating XCFramework"echo "--------------------------------------------------------------"# Locate the framework bundles# Note: The build scripts usually output to <outdir>/opencv2.framework# But verify if they are inside a subdir.# ios/build_framework.py outputs directly to <outdir>/opencv2.framework (after lipo)# osx/build_framework.py outputs directly to <outdir>/opencv2.frameworkFRAMEWORK_IOS="$BUILD_DIR/ios_device/opencv2.framework"FRAMEWORK_SIM="$BUILD_DIR/ios_sim/opencv2.framework"FRAMEWORK_CAT="$BUILD_DIR/catalyst/opencv2.framework"if [ ! -d "$FRAMEWORK_IOS" ]; then    echo "Error: iOS Device framework not found at $FRAMEWORK_IOS"    exit 1fiif [ ! -d "$FRAMEWORK_SIM" ]; then    echo "Error: iOS Simulator framework not found at $FRAMEWORK_SIM"    exit 1fiif [ ! -d "$FRAMEWORK_CAT" ]; then    echo "Error: Catalyst framework not found at $FRAMEWORK_CAT"    exit 1fixcodebuild -create-xcframework \    -framework "$FRAMEWORK_IOS" \    -framework "$FRAMEWORK_SIM" \    -framework "$FRAMEWORK_CAT" \    -output "$OUTPUT_DIR/opencv2.xcframework"fi # End of SKIP_BUILD checkecho ""echo "=============================================================="echo "SUCCESS!"echo "XCFramework created at: $OUTPUT_DIR/opencv2.xcframework"echo "=============================================================="

# 拷贝所有 Swift 文件，注意实际文件夹在find yourfolder/OpenCV/build_manual/ios_device/build/build-arm64-iphoneos/modules/objc_bindings_generator/ios/gen/objc/ -name "*.swift" -exec cp {} yourfolder/OpenCV/Classes/ \;

#!/usr/bin/env python3directory = "/Users/bytedance/Desktop/Source/NanoSparrowApple/OpenCV/Classes"import_statement = "import opencv2"import osfor filename in os.listdir(directory):    if filename.endswith(".swift"):        filepath = os.path.join(directory, filename)        with open(filepath, "r") as f:            lines = f.readlines()        # Check if already imported        if any(import_statement in line for line in lines):            print(f"Skipping {filename}: already has import")            continue        new_lines = []        inserted = False        # Try to find existing imports        last_import_index = -1        for i, line in enumerate(lines):            if line.strip().startswith("import "):                last_import_index = i        if last_import_index != -1:            # Insert after the last import            lines.insert(last_import_index + 1, import_statement + "\n")        else:            # No imports found, insert at the beginning            lines.insert(0, import_statement + "\n")        # Write back        with open(filepath, "w") as f:            f.writelines(lines)        print(f"Updated {filename}")

python3 add_imports.py

opencv2.xcframework/├── Info.plist├── ios-arm64_armv7_armv7s/├── ios-arm64_i386_x86_64-simulator/└── ios-arm64-maccatalyst/

ls yourfolder/OpenCV/Classes

ByteVectorExt.swift     DnnExt.swift            ImgcodecsExt.swift      MlExt.swift             VideoExt.swiftCalib3dExt.swift       DoubleVectorExt.swift   ImgprocExt.swift        ObjdetectExt.swift      VideoioExt.swiftCoreExt.swift          Features2dExt.swift     IntVectorExt.swift      PhotoExt.swiftCvTypeExt.swift        FloatVectorExt.swift    MatExt.swift            Typealiases.swift