总述
1、采用的代码是 /69 2018-0816-0156 的版本，vs是2017
A 、首先webrtc编译大致流程：
1、gn 生成工程文件
2、ninja调用相关的编译器实现编译
所以为了让自己编译出来的webrtc库能够被自己的vs工程使用关键是gn生成工程文件的地方。
webrtc默认的编译器是clang. 通过她编译出来的lib有时候我们的vs工程用不了会报如下错误：
webrtc.lib : fatal error LNK1136: invalid or corrupt file（只是举个例子）
所以在使用gn生成工程文件的时候需要带上 “is_clang=false ” 这样的参数。例如：
gn gen out/x86/release --args="is_debug=false target_winuwp_version=\"8.1\" target_winuwp_family=\"desktop\" use_rtti=true is_clang=false rtc_build_ssl=false" (https://groups.google.com/forum/#!topic/discuss-webrtc/9CjnkJ8QVXc)
B、如何使用编译生成的库
我们需要相应的lib文件和头文件
需要注意的是头文件和lib文件相对路径必须要正确，所以我们在复制头文件和lib的时候要保证他们的目录结构没有改变，以下命令可以帮组我们
以上是复制头文件的例子，自己可以变通一下修改成复制lib文件的例子。
C、如何搭建自己的工程
有了头文件有了库文件，那么就开始来搭建我们自己的vs工程吧！！！
以webrtc自带的peernnection_client为例，首先来看我工程接口截图
1、自己创建一个窗口工程名字自己随便写（不详述）
2、把 webrtc-code\src\examples\peerconnection\client 把这个目录下的代码放到步骤1中创建的工程中，并引用
3、把之前复制的头文件和lib文件的引用基本路径设置到你的工程用，
4、为项目设置相关的宏
应用webrtc库需要的宏一般只有三个：NOMINMAX WIN32_LEAN_AND_MEAN WEBRTC_WIN
但是如果在之后的过程中仍然编译不过，那么就把peerconnection_client.ninja中涉及到的所有宏都设置到工程里面。
5、为项目添加lib，因为lib很多我就不详述了，直接列出来（一下只是webrtc相关的lib）
#pragma comment(lib, "obj/third_party/boringssl/boringssl.lib")
#pragma comment(lib, "obj/third_party/boringssl/boringssl_asm.lib")
#pragma comment(lib, "obj/third_party/libjpeg_turbo/libjpeg.lib")
#pragma comment(lib, "obj/third_party/libjpeg_turbo/simd.lib")
#pragma comment(lib, "obj/third_party/libjpeg_turbo/simd_asm.lib")
#pragma comment(lib, "obj/third_party/libsrtp/libsrtp.lib")
#pragma comment(lib, "obj/third_party/libvpx/libvpx.lib")
#pragma comment(lib, "obj/third_party/libvpx/libvpx_yasm.lib")
#pragma comment(lib, "obj/third_party/libyuv/libyuv_internal.lib")
//#pragma comment(lib, "obj/third_party/openmax_dl/dl/dl.lib")
#pragma comment(lib, "obj/third_party/opus/opus.lib")
#pragma comment(lib, "obj/third_party/protobuf/protobuf_lite.lib")
#pragma comment(lib, "obj/third_party/usrsctp/usrsctp.lib")
#pragma comment(lib, "obj/third_party/winsdk_samples/winsdk_samples.lib")
#pragma comment(lib, "obj/api/audio_codecs/builtin_audio_decoder_factory.lib")
#pragma comment(lib, "obj/api/audio_codecs/builtin_audio_encoder_factory.lib")
#pragma comment(lib, "obj/api/audio_codecs/opus/audio_encoder_opus_config.lib")
#pragma comment(lib, "obj/api/libjingle_peerconnection_api.lib")
#pragma comment(lib, "obj/audio/audio.lib")
#pragma comment(lib, "obj/audio/utility/audio_frame_operations.lib")
#pragma comment(lib, "obj/call/call.lib")
#pragma comment(lib, "obj/common_audio/common_audio.lib")
#pragma comment(lib, "obj/common_audio/common_audio_sse2.lib")
#pragma comment(lib, "obj/common_video/common_video.lib")
#pragma comment(lib, "obj/logging/rtc_event_log_impl_base.lib")
#pragma comment(lib, "obj/logging/rtc_event_log_impl_encoder.lib")
#pragma comment(lib, "obj/logging/rtc_event_log_proto.lib")
#pragma comment(lib, "obj/media/rtc_audio_video.lib")
#pragma comment(lib, "obj/media/rtc_data.lib")
#pragma comment(lib, "obj/media/rtc_media_base.lib")
#pragma comment(lib, "obj/modules/audio_coding/ana_config_proto.lib")
#pragma comment(lib, "obj/modules/audio_coding/ana_debug_dump_proto.lib")
#pragma comment(lib, "obj/modules/audio_coding/audio_coding.lib")
#pragma comment(lib, "obj/modules/audio_coding/audio_format_conversion.lib")
#pragma comment(lib, "obj/modules/audio_coding/audio_network_adaptor.lib")
#pragma comment(lib, "obj/api/libjingle_peerconnection_api.lib")
#pragma comment(lib, "obj/api/audio_codecs/builtin_audio_decoder_factory.lib")
#pragma comment(lib, "obj/api/audio_codecs/builtin_audio_encoder_factory.lib")
#pragma comment(lib, "obj/api/audio_codecs/g711/audio_decoder_g711.lib")
#pragma comment(lib, "obj/api/audio_codecs/g711/audio_encoder_g711.lib")
#pragma comment(lib, "obj/api/audio_codecs/g722/audio_decoder_g722.lib")
#pragma comment(lib, "obj/api/audio_codecs/g722/audio_encoder_g722.lib")
#pragma comment(lib, "obj/api/audio_codecs/ilbc/audio_decoder_ilbc.lib")
#pragma comment(lib, "obj/api/audio_codecs/ilbc/audio_encoder_ilbc.lib")
#pragma comment(lib, "obj/api/audio_codecs/isac/audio_decoder_isac_float.lib")
#pragma comment(lib, "obj/api/audio_codecs/isac/audio_encoder_isac_float.lib")
#pragma comment(lib, "obj/api/audio_codecs/L16/audio_decoder_L16.lib")
#pragma comment(lib, "obj/api/audio_codecs/L16/audio_encoder_L16.lib")
#pragma comment(lib, "obj/api/audio_codecs/opus/audio_decoder_opus.lib")
#pragma comment(lib, "obj/api/audio_codecs/opus/audio_encoder_opus_config.lib")
#pragma comment(lib, "obj/modules/audio_coding/isac_common.lib")
#pragma comment(lib, "obj/modules/audio_coding/legacy_encoded_audio_frame.lib")
#pragma comment(lib, "obj/modules/audio_coding/neteq.lib")
#pragma comment(lib, "obj/modules/audio_coding/pcm16b.lib")
#pragma comment(lib, "obj/modules/audio_coding/red.lib")
#pragma comment(lib, "obj/modules/audio_coding/rent_a_codec.lib")
#pragma comment(lib, "obj/modules/audio_coding/webrtc_opus.lib")
//#pragma comment(lib, "obj/modules/audio_conference_mixer/audio_conference_mixer.lib")
//#pragma comment(lib, "obj/modules/audio_device/audio_device.lib")
#pragma comment(lib, "obj/modules/audio_mixer/audio_frame_manipulator.lib")
#pragma comment(lib, "obj/modules/audio_mixer/audio_mixer_impl.lib")
#pragma comment(lib, "obj/modules/audio_processing/audio_processing.lib")
//#pragma comment(lib, "obj/modules/audio_processing/audio_processing_sse2.lib")
#pragma comment(lib, "obj/modules/audio_processing/audioproc_debug_proto.lib")
#pragma comment(lib, "obj/modules/bitrate_controller/bitrate_controller.lib")
#pragma comment(lib, "obj/modules/congestion_controller/congestion_controller.lib")
#pragma comment(lib, "obj/media/rtc_media_base.lib")
#pragma comment(lib, "obj/modules/pacing/pacing.lib")
#pragma comment(lib, "obj/modules/remote_bitrate_estimator/remote_bitrate_estimator.lib")
#pragma comment(lib, "obj/modules/rtp_rtcp/rtp_rtcp.lib")
#pragma comment(lib, "obj/modules/utility/utility.lib")
#pragma comment(lib, "obj/modules/video_capture/video_capture_module.lib")
#pragma comment(lib, "obj/modules/video_coding/video_coding.lib")
#pragma comment(lib, "obj/modules/video_coding/webrtc_h264.lib")
#pragma comment(lib, "obj/modules/video_coding/webrtc_vp8.lib")
#pragma comment(lib, "obj/modules/video_coding/webrtc_vp9.lib")
#pragma comment(lib, "obj/modules/video_processing/video_processing.lib")
#pragma comment(lib, "obj/modules/video_processing/video_processing_sse2.lib")
#pragma comment(lib, "obj/p2p/libstunprober.lib")
#pragma comment(lib, "obj/p2p/rtc_p2p.lib")
#pragma comment(lib, "obj/pc/create_pc_factory.lib")
#pragma comment(lib, "obj/pc/peerconnection.lib")
#pragma comment(lib, "obj/pc/rtc_pc_base.lib")
#pragma comment(lib, "obj/rtc_base/rtc_base.lib")
#pragma comment(lib, "obj/rtc_base/rtc_numerics.lib")
#pragma comment(lib, "obj/rtc_base/weak_ptr.lib")
#pragma comment(lib, "obj/stats/rtc_stats.lib")
#pragma comment(lib, "obj/system_wrappers/system_wrappers.lib")
#pragma comment(lib, "obj/video/video.lib")
#pragma comment(lib, "obj/webrtc.lib")
6、设置windows自带的库
dbghelp.lib
dnsapi.lib
msimg32.lib
psapi.lib
shlwapi.lib
usp10.lib
version.lib
wininet.lib
winmm.lib
ws2_32.lib
delayimp.lib
crypt32.lib
iphlpapi.lib
secur32.lib
dmoguids.lib
wmcodecdspuuid.lib
amstrmid.lib
msdmo.lib
strmiids.lib
7、编译
到这一步时语法错误和连接错误都应该已经没有了。