iOS webRTC library supporting both armv7 & arm64

Question

How can I get the webRTC library which will support for both armv7 & arm64 in iOS?

Answer 1

You are lucky. I have just finished to integrate webrtc in my project for couple days. My solution as below:

1. Combine all *.a you built for armv7 to libWebRTC-armv7.a: Using command lines as below

   libtool -static -o src/out_ios_armv7/Release-iphoneos/libWebRTC-temp.a src/out_ios_armv7/Release-iphoneos/*.a

   strip -S -x -o src/out_ios_armv7/Release-iphoneos/libWebRTC-armv7.a -r src/out_ios_armv7/Release-iphoneos/libWebRTC-temp.a

2. Combine all *.a you built for arm64 to libWebRTC-arm64.a:

   libtool -static -o src/out_ios/Release-iphoneos/libWebRTC-temp.a src/out_ios/Release-iphoneos/*.a

   strip -S -x -o src/out_ios/Release-iphoneos/libWebRTC-arm64.a -r src/out_ios/Release-iphoneos/libWebRTC-temp.a

3. Create your libWebRTC supported both armv7 and arm64:

   lipo -create src/out_ios_armv7/Release-iphoneos/libWebRTC-armv7.a src/out_ios/Release-iphoneos/libWebRTC-arm64.a -output libWebRTC.a

P.s: Just build your armv7 library to separated folder with arm64:

export GYP_GENERATORS="ninja"
export GYP_DEFINES="build_with_libjingle=1 build_with_chromium=0 libjingle_objc=1 OS=ios target_arch=armv7"
export GYP_GENERATOR_FLAGS="$GYP_GENERATOR_FLAGS output_dir=out_ios_armv7"
export GYP_CROSSCOMPILE=1
pushd src
gclient runhooks
ninja -C out_ios_armv7/Release-iphoneos AppRTCDemo
popd