我正在尝试使用Xcode 10.1编译DJIWidget。
目的是运行在github上找到的Mobile-UXSDK-iOS Sample。
如果我使用New Build System（文件->工作区设置），则会出现以下错误：
Ld /Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Products/Debug-iphonesimulator/DJIWidget/DJIWidget.framework/DJIWidget normal x86_64 (in target: DJIWidget)
cd /Users/paolo/Documents/Projects/Mobile-UXSDK-iOS/Sample\ Code/SwiftSampleCode/Pods
export IPHONEOS_DEPLOYMENT_TARGET=8.0
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch x86_64 -dynamiclib -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk -L/Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Products/Debug-iphonesimulator/DJIWidget -F/Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Products/Debug-iphonesimulator/DJIWidget -F/Users/paolo/Documents/Projects/Mobile-UXSDK-iOS/Sample\ Code/SwiftSampleCode/Pods/DJIWidget/FFmpeg -filelist /Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/DJIWidget.build/Objects-normal/x86_64/DJIWidget.LinkFileList -install_name @rpath/DJIWidget.framework/DJIWidget -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -mios-simulator-version-min=8.0 -dead_strip -Xlinker -object_path_lto -Xlinker /Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/DJIWidget.build/Objects-normal/x86_64/DJIWidget_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -Xlinker -objc_abi_version -Xlinker 2 -fobjc-arc -fobjc-link-runtime -framework Foundation -compatibility_version 1 -current_version 1 -Xlinker -dependency_info -Xlinker /Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/DJIWidget.build/Objects-normal/x86_64/DJIWidget_dependency_info.dat -o /Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Products/Debug-iphonesimulator/DJIWidget/DJIWidget.framework/DJIWidget
Undefined symbols for architecture x86_64:
"_avformat_network_init", referenced from:
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_opt_set_int", referenced from:
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_opt_set", referenced from:
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_avcodec_find_encoder", referenced from:
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_avcodec_encode_audio2", referenced from:
-[DJIRtmpMuxer ffmpeg_encodeAudioFrame:length:] in DJIRtmpMuxer.o
"_avio_close_stream", referenced from:
_djiff_close_stream_input in djiffremux.o
"_avformat_close_input", referenced from:
_djiff_close_file_input in djiffremux.o
"_avformat_open_input", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_bitstream_filter_close", referenced from:
_djiff_remux_deinit in djiffremux.o
"_av_strlcpy", referenced from:
_djiff_open_file_input in djiffremux.o
"_av_get_bits_per_sample", referenced from:
_djiff_assign_stream_info in djiffremux.o
"_av_rescale_q_rnd", referenced from:
_djiff_remux_frame in djiffremux.o
_djiff_mux_frame in djiffremux.o
_djiff_mux_frame2 in djiffremux.o
"_avcodec_pix_fmt_to_codec_tag", referenced from:
_djiff_assign_stream_info in djiffremux.o
"_avformat_free_context", referenced from:
_djiff_open_stream_input in djiffremux.o
_djiff_open_file_input in djiffremux.o
_djiff_remux_deinit in djiffremux.o
_djiff_close_stream_input in djiffremux.o
"_avpriv_find_pix_fmt", referenced from:
_djiff_assign_stream_info in djiffremux.o
"_avcodec_close", referenced from:
-[DJICustomVideoFrameExtractor freeExtractor] in DJICustomVideoFrameExtractor.o
-[DJIRtmpMuxer ffmpeg_shutdown] in DJIRtmpMuxer.o
-[DJIVideoPreviewerH264Parser freeParser] in DJIVideoPreviewerH264Parser.o
"_av_opt_set_defaults", referenced from:
_djiff_open_stream_input in djiffremux.o
_djiff_open_file_input in djiffremux.o
"_avformat_alloc_context", referenced from:
_djiff_open_stream_input in djiffremux.o
_djiff_open_file_input in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_free_packet", referenced from:
-[DJICustomVideoFrameExtractor privateParseVideo:length:withOutputBlock:] in DJICustomVideoFrameExtractor.o
-[DJICustomVideoFrameExtractor decodeRawFrame:callback:] in DJICustomVideoFrameExtractor.o
_djiff_filter_packet in djiffremux.o
_djiff_mux_frame in djiffremux.o
_djiff_mux_frame2 in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
-[DJIRtmpMuxer ffmpeg_encodeAudioFrame:length:] in DJIRtmpMuxer.o
...
"_avio_open_stream", referenced from:
_djiff_open_stream_input in djiffremux.o
"_av_write_frame", referenced from:
_djiff_remux_frame in djiffremux.o
_djiff_mux_frame in djiffremux.o
_djiff_mux_frame2 in djiffremux.o
"_avformat_find_stream_info", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_write_trailer", referenced from:
_djiff_remux_deinit in djiffremux.o
"_av_rescale_q", referenced from:
_djiff_mux_choose_output in djiffremux.o
_djiff_remux_frame in djiffremux.o
_djiff_mux_frame in djiffremux.o
_djiff_mux_frame2 in djiffremux.o
_djiff_remux_seek in djiffremux.o
"_av_guess_format", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_sws_scale", referenced from:
-[DJIImageCalibrateColorCPUConverter convertFromRGBA:withSize:] in DJIImageCalibrateColorCPUConverter.o
"_av_read_frame", referenced from:
_djiff_remux_frame in djiffremux.o
_djiff_demux_frame in djiffremux.o
"_avcodec_copy_context", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_avformat_write_header", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
"_avformat_alloc_output_context2", referenced from:
_djiff_remux_init in djiffremux.o
"_avpriv_get_raw_pix_fmt_tags", referenced from:
_djiff_assign_stream_info in djiffremux.o
"_avio_open", referenced from:
_djiff_remux_init in djiffremux.o
"_av_find_input_format", referenced from:
_djiff_open_stream_input in djiffremux.o
_djiff_open_file_input in djiffremux.o
"_avio_close", referenced from:
_djiff_open_file_input in djiffremux.o
_djiff_remux_deinit in djiffremux.o
-[DJIRtmpMuxer ffmpeg_shutdown] in DJIRtmpMuxer.o
"_av_bitstream_filter_init", referenced from:
_djiff_remux_init in djiffremux.o
"_sws_freeContext", referenced from:
-[DJIImageCalibrateColorCPUConverter dealloc] in DJIImageCalibrateColorCPUConverter.o
-[DJIImageCalibrateColorCPUConverter convertFromRGBA:withSize:] in DJIImageCalibrateColorCPUConverter.o
"_avformat_new_stream", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_parser_close", referenced from:
-[DJICustomVideoFrameExtractor freeExtractor] in DJICustomVideoFrameExtractor.o
-[DJIVideoPreviewerH264Parser freeParser] in DJIVideoPreviewerH264Parser.o
"_av_dict_copy", referenced from:
_djiff_remux_init in djiffremux.o
"_av_init_packet", referenced from:
-[DJICustomVideoFrameExtractor privateParseVideo:length:withOutputBlock:] in DJICustomVideoFrameExtractor.o
-[DJICustomVideoFrameExtractor decodeRawFrame:callback:] in DJICustomVideoFrameExtractor.o
_djiff_remux_frame in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
-[DJIVideoPreviewerH264Parser parseVideo:length:usedLength:] in DJIVideoPreviewerH264Parser.o
"_avcodec_open2", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_parser_parse2", referenced from:
-[DJICustomVideoFrameExtractor privateParseVideo:length:withOutputBlock:] in DJICustomVideoFrameExtractor.o
-[DJIVideoPreviewerH264Parser parseVideo:length:usedLength:] in DJIVideoPreviewerH264Parser.o
"_avio_open2", referenced from:
_djiff_open_file_input in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
"_av_interleaved_write_frame", referenced from:
_djiff_remux_frame in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
-[DJIRtmpMuxer ffmpeg_encodeAudioFrame:length:] in DJIRtmpMuxer.o
"_avcodec_register_all", referenced from:
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_frame_alloc", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
-[DJIRtmpMuxer ffmpeg_encodeAudioFrame:length:] in DJIRtmpMuxer.o
"_avcodec_find_decoder", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
-[DJIVideoPreviewerH264Parser initParser] in DJIVideoPreviewerH264Parser.o
"_av_dict_set", referenced from:
_djiff_remux_init in djiffremux.o
_djiff_assign_stream_info in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_frame_free", referenced from:
-[DJIRtmpMuxer ffmpeg_encodeAudioFrame:length:] in DJIRtmpMuxer.o
"_av_seek_frame", referenced from:
_djiff_remux_seek in djiffremux.o
"_av_parser_init", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
-[DJIVideoPreviewerH264Parser initParser] in DJIVideoPreviewerH264Parser.o
"_av_mallocz", referenced from:
_djiff_remux_init in djiffremux.o
_djiff_open_stream_input in djiffremux.o
_djiff_open_file_input in djiffremux.o
"_av_register_all", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
_djiff_remux_init in djiffremux.o
_djiff_remux_getDuration in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
-[DJIVideoPreviewerH264Parser initParser] in DJIVideoPreviewerH264Parser.o
"_av_dict_free", referenced from:
_djiff_remux_init in djiffremux.o
"_av_bitstream_filter_filter", referenced from:
_djiff_filter_packet in djiffremux.o
"_sws_getContext", referenced from:
-[DJIImageCalibrateColorCPUConverter convertFromRGBA:withSize:] in DJIImageCalibrateColorCPUConverter.o
"_avcodec_alloc_context3", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
-[DJIVideoPreviewerH264Parser initParser] in DJIVideoPreviewerH264Parser.o
"_av_free", referenced from:
-[DJICustomVideoFrameExtractor freeExtractor] in DJICustomVideoFrameExtractor.o
_djiff_remux_deinit in djiffremux.o
-[DJIRtmpMuxer ffmpeg_free] in DJIRtmpMuxer.o
-[DJIVideoPreviewerH264Parser freeParser] in DJIVideoPreviewerH264Parser.o
"_avcodec_decode_video2", referenced from:
-[DJICustomVideoFrameExtractor decodeRawFrame:callback:] in DJICustomVideoFrameExtractor.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
如果相反，我按照here的说明使用Legacy Build System，则仍然出现以下错误：
Ld /Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Products/Debug-iphonesimulator/DJIWidget/DJIWidget.framework/DJIWidget normal x86_64
cd "/Users/paolo/Documents/Projects/Mobile-UXSDK-iOS/Sample Code/SwiftSampleCode/Pods"
export IPHONEOS_DEPLOYMENT_TARGET=8.0
export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch x86_64 -dynamiclib -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk -L/Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Products/Debug-iphonesimulator/DJIWidget -F/Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Products/Debug-iphonesimulator/DJIWidget -F/Users/paolo/Documents/Projects/Mobile-UXSDK-iOS/Sample\ Code/SwiftSampleCode/Pods/DJIWidget/FFmpeg -filelist /Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/DJIWidget.build/Objects-normal/x86_64/DJIWidget.LinkFileList -install_name @rpath/DJIWidget.framework/DJIWidget -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -mios-simulator-version-min=8.0 -dead_strip -Xlinker -object_path_lto -Xlinker /Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/DJIWidget.build/Objects-normal/x86_64/DJIWidget_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -Xlinker -objc_abi_version -Xlinker 2 -fobjc-arc -fobjc-link-runtime -framework Foundation -compatibility_version 1 -current_version 1 -Xlinker -dependency_info -Xlinker /Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/DJIWidget.build/Objects-normal/x86_64/DJIWidget_dependency_info.dat -o /Users/paolo/Library/Developer/Xcode/DerivedData/UXSDKSwiftSample-haeixzppsjyygmdsdkydxxpnpsvw/Build/Products/Debug-iphonesimulator/DJIWidget/DJIWidget.framework/DJIWidget
Undefined symbols for architecture x86_64:
"_avformat_network_init", referenced from:
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_opt_set_int", referenced from:
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_opt_set", referenced from:
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_avcodec_find_encoder", referenced from:
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_avcodec_encode_audio2", referenced from:
-[DJIRtmpMuxer ffmpeg_encodeAudioFrame:length:] in DJIRtmpMuxer.o
"_avio_close_stream", referenced from:
_djiff_close_stream_input in djiffremux.o
"_avformat_close_input", referenced from:
_djiff_close_file_input in djiffremux.o
"_avformat_open_input", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_bitstream_filter_close", referenced from:
_djiff_remux_deinit in djiffremux.o
"_av_strlcpy", referenced from:
_djiff_open_file_input in djiffremux.o
"_av_get_bits_per_sample", referenced from:
_djiff_assign_stream_info in djiffremux.o
"_av_rescale_q_rnd", referenced from:
_djiff_remux_frame in djiffremux.o
_djiff_mux_frame in djiffremux.o
_djiff_mux_frame2 in djiffremux.o
"_avcodec_pix_fmt_to_codec_tag", referenced from:
_djiff_assign_stream_info in djiffremux.o
"_avformat_free_context", referenced from:
_djiff_open_stream_input in djiffremux.o
_djiff_open_file_input in djiffremux.o
_djiff_remux_deinit in djiffremux.o
_djiff_close_stream_input in djiffremux.o
"_avpriv_find_pix_fmt", referenced from:
_djiff_assign_stream_info in djiffremux.o
"_avcodec_close", referenced from:
-[DJICustomVideoFrameExtractor freeExtractor] in DJICustomVideoFrameExtractor.o
-[DJIRtmpMuxer ffmpeg_shutdown] in DJIRtmpMuxer.o
-[DJIVideoPreviewerH264Parser freeParser] in DJIVideoPreviewerH264Parser.o
"_av_opt_set_defaults", referenced from:
_djiff_open_stream_input in djiffremux.o
_djiff_open_file_input in djiffremux.o
"_avformat_alloc_context", referenced from:
_djiff_open_stream_input in djiffremux.o
_djiff_open_file_input in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_free_packet", referenced from:
-[DJICustomVideoFrameExtractor privateParseVideo:length:withOutputBlock:] in DJICustomVideoFrameExtractor.o
-[DJICustomVideoFrameExtractor decodeRawFrame:callback:] in DJICustomVideoFrameExtractor.o
_djiff_filter_packet in djiffremux.o
_djiff_mux_frame in djiffremux.o
_djiff_mux_frame2 in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
-[DJIRtmpMuxer ffmpeg_encodeAudioFrame:length:] in DJIRtmpMuxer.o
...
"_avio_open_stream", referenced from:
_djiff_open_stream_input in djiffremux.o
"_av_write_frame", referenced from:
_djiff_remux_frame in djiffremux.o
_djiff_mux_frame in djiffremux.o
_djiff_mux_frame2 in djiffremux.o
"_avformat_find_stream_info", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_write_trailer", referenced from:
_djiff_remux_deinit in djiffremux.o
"_av_rescale_q", referenced from:
_djiff_mux_choose_output in djiffremux.o
_djiff_remux_frame in djiffremux.o
_djiff_mux_frame in djiffremux.o
_djiff_mux_frame2 in djiffremux.o
_djiff_remux_seek in djiffremux.o
"_av_guess_format", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_sws_scale", referenced from:
-[DJIImageCalibrateColorCPUConverter convertFromRGBA:withSize:] in DJIImageCalibrateColorCPUConverter.o
"_av_read_frame", referenced from:
_djiff_remux_frame in djiffremux.o
_djiff_demux_frame in djiffremux.o
"_avcodec_copy_context", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_avformat_write_header", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
"_avformat_alloc_output_context2", referenced from:
_djiff_remux_init in djiffremux.o
"_avpriv_get_raw_pix_fmt_tags", referenced from:
_djiff_assign_stream_info in djiffremux.o
"_avio_open", referenced from:
_djiff_remux_init in djiffremux.o
"_av_find_input_format", referenced from:
_djiff_open_stream_input in djiffremux.o
_djiff_open_file_input in djiffremux.o
"_avio_close", referenced from:
_djiff_open_file_input in djiffremux.o
_djiff_remux_deinit in djiffremux.o
-[DJIRtmpMuxer ffmpeg_shutdown] in DJIRtmpMuxer.o
"_av_bitstream_filter_init", referenced from:
_djiff_remux_init in djiffremux.o
"_sws_freeContext", referenced from:
-[DJIImageCalibrateColorCPUConverter dealloc] in DJIImageCalibrateColorCPUConverter.o
-[DJIImageCalibrateColorCPUConverter convertFromRGBA:withSize:] in DJIImageCalibrateColorCPUConverter.o
"_avformat_new_stream", referenced from:
_djiff_remux_init in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_parser_close", referenced from:
-[DJICustomVideoFrameExtractor freeExtractor] in DJICustomVideoFrameExtractor.o
-[DJIVideoPreviewerH264Parser freeParser] in DJIVideoPreviewerH264Parser.o
"_av_dict_copy", referenced from:
_djiff_remux_init in djiffremux.o
"_av_init_packet", referenced from:
-[DJICustomVideoFrameExtractor privateParseVideo:length:withOutputBlock:] in DJICustomVideoFrameExtractor.o
-[DJICustomVideoFrameExtractor decodeRawFrame:callback:] in DJICustomVideoFrameExtractor.o
_djiff_remux_frame in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
-[DJIVideoPreviewerH264Parser parseVideo:length:usedLength:] in DJIVideoPreviewerH264Parser.o
"_avcodec_open2", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_parser_parse2", referenced from:
-[DJICustomVideoFrameExtractor privateParseVideo:length:withOutputBlock:] in DJICustomVideoFrameExtractor.o
-[DJIVideoPreviewerH264Parser parseVideo:length:usedLength:] in DJIVideoPreviewerH264Parser.o
"_avio_open2", referenced from:
_djiff_open_file_input in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
"_av_interleaved_write_frame", referenced from:
_djiff_remux_frame in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
-[DJIRtmpMuxer ffmpeg_encodeAudioFrame:length:] in DJIRtmpMuxer.o
"_avcodec_register_all", referenced from:
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_frame_alloc", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
-[DJIRtmpMuxer ffmpeg_encodeAudioFrame:length:] in DJIRtmpMuxer.o
"_avcodec_find_decoder", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
-[DJIVideoPreviewerH264Parser initParser] in DJIVideoPreviewerH264Parser.o
"_av_dict_set", referenced from:
_djiff_remux_init in djiffremux.o
_djiff_assign_stream_info in djiffremux.o
-[DJIRtmpMuxer rtmpWork] in DJIRtmpMuxer.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
"_av_frame_free", referenced from:
-[DJIRtmpMuxer ffmpeg_encodeAudioFrame:length:] in DJIRtmpMuxer.o
"_av_seek_frame", referenced from:
_djiff_remux_seek in djiffremux.o
"_av_parser_init", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
-[DJIVideoPreviewerH264Parser initParser] in DJIVideoPreviewerH264Parser.o
"_av_mallocz", referenced from:
_djiff_remux_init in djiffremux.o
_djiff_open_stream_input in djiffremux.o
_djiff_open_file_input in djiffremux.o
"_av_register_all", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
_djiff_remux_init in djiffremux.o
_djiff_remux_getDuration in djiffremux.o
-[DJIRtmpMuxer ffmpeg_init] in DJIRtmpMuxer.o
-[DJIVideoPreviewerH264Parser initParser] in DJIVideoPreviewerH264Parser.o
"_av_dict_free", referenced from:
_djiff_remux_init in djiffremux.o
"_av_bitstream_filter_filter", referenced from:
_djiff_filter_packet in djiffremux.o
"_sws_getContext", referenced from:
-[DJIImageCalibrateColorCPUConverter convertFromRGBA:withSize:] in DJIImageCalibrateColorCPUConverter.o
"_avcodec_alloc_context3", referenced from:
-[DJICustomVideoFrameExtractor setupExtractor] in DJICustomVideoFrameExtractor.o
-[DJIVideoPreviewerH264Parser initParser] in DJIVideoPreviewerH264Parser.o
"_av_free", referenced from:
-[DJICustomVideoFrameExtractor freeExtractor] in DJICustomVideoFrameExtractor.o
_djiff_remux_deinit in djiffremux.o
-[DJIRtmpMuxer ffmpeg_free] in DJIRtmpMuxer.o
-[DJIVideoPreviewerH264Parser freeParser] in DJIVideoPreviewerH264Parser.o
"_avcodec_decode_video2", referenced from:
-[DJICustomVideoFrameExtractor decodeRawFrame:callback:] in DJICustomVideoFrameExtractor.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
如何通过此阻止程序？
答案 0 :(得分：1)
最终的解决方案是使用Cocoapods 1.5.3。该解决方案得到了OP作者的确认。
答案 1 :(得分：0)
解决方案是将CocoaPods从1.6.0降级到1.5.3。