webrtc iOS端编译

1.修改路径webrtc/src/tools_webrtc/ios/build_ios_libs.py文件的cpu架构

DEFAULT_ARCHS = ENABLED_ARCHS = ['arm64','arm','x64',]
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• x64是模拟器，是mac电脑cpu
• arm64是64位cpu
• arm是32位cpu

2.直接运行命令 --bitcode 是开启bitcode功能，如果开启会导致生成的freamwork非常的大。所以一般不增加

python build_ios_libs.py --bitcode
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如果遇到只要部分cpu架构可以自己进行删除控制。

Note: 如果你的freamwork只有armv7 和 arm64架构，但是在你上传到App Store或者pod trunk 需要x86_64或i386 可以在 /bin/sh 增加以以下脚本进行忽略。

APP_PATH="${TARGET_BUILD_DIR}/${WRAPPER_NAME}"

# This script loops through the frameworks embedded in the application and
# removes unused architectures.
find "$APP_PATH" -name '*.framework' -type d | while read -r FRAMEWORK
do
    FRAMEWORK_EXECUTABLE_NAME=$(defaults read "$FRAMEWORK/Info.plist" CFBundleExecutable)
    FRAMEWORK_EXECUTABLE_PATH="$FRAMEWORK/$FRAMEWORK_EXECUTABLE_NAME"
    echo "Executable is $FRAMEWORK_EXECUTABLE_PATH"

    EXTRACTED_ARCHS=()

    for ARCH in $ARCHS
    do
        echo "Extracting $ARCH from $FRAMEWORK_EXECUTABLE_NAME"
        lipo -extract "$ARCH" "$FRAMEWORK_EXECUTABLE_PATH" -o "$FRAMEWORK_EXECUTABLE_PATH-$ARCH"
        EXTRACTED_ARCHS+=("$FRAMEWORK_EXECUTABLE_PATH-$ARCH")
    done

    echo "Merging extracted architectures: ${ARCHS}"
    lipo -o "$FRAMEWORK_EXECUTABLE_PATH-merged" -create "${EXTRACTED_ARCHS[@]}"
    rm "${EXTRACTED_ARCHS[@]}"

    echo "Replacing original executable with thinned version"
    rm "$FRAMEWORK_EXECUTABLE_PATH"
    mv "$FRAMEWORK_EXECUTABLE_PATH-merged" "$FRAMEWORK_EXECUTABLE_PATH"

done
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编译模拟器和真机测试demo

# debug build for 64-bit iOS
gn gen out/ios_64 --args='target_os="ios" target_cpu="arm64"'

# debug build for simulator
gn gen out/ios_sim --args='target_os="ios" target_cpu="x64"'

ninja -C out/ios_64 AppRTCMobile

gn gen out/ios --args='target_os="ios" target_cpu="arm64"' --ide=xcode
open -a Xcode.app out/ios/all.xcworkspace

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