我安装了ffmpeg，我正在尝试编译libx264但是一直出错。我从搜索中发现的大多数结果都是关于编译ffmpeg或用libx264配置它的问题，但我似乎甚至无法编译libx264。
这是错误：
Undefined symbols for architecture x86_64:
"_CFDataCreate", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_vda_old_h264_end_frame in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
_vda_h264_end_frame in libavcodec.a(vda_h264.o)
"_CFDictionaryCreateMutable", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_CFDictionarySetValue", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_CFNumberCreate", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_CFRelease", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_vda_old_h264_end_frame in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
_vda_h264_end_frame in libavcodec.a(vda_h264.o)
"_CVPixelBufferGetBaseAddress", referenced from:
_vdadec_decode in libavcodec.a(vda_h264_dec.o)
"_CVPixelBufferGetBaseAddressOfPlane", referenced from:
_vdadec_decode in libavcodec.a(vda_h264_dec.o)
"_CVPixelBufferGetBytesPerRow", referenced from:
_vdadec_decode in libavcodec.a(vda_h264_dec.o)
"_CVPixelBufferGetBytesPerRowOfPlane", referenced from:
_vdadec_decode in libavcodec.a(vda_h264_dec.o)
"_CVPixelBufferGetPixelFormatType", referenced from:
_vda_decoder_callback in libavcodec.a(vda_h264.o)
"_CVPixelBufferGetPlaneCount", referenced from:
_vdadec_decode in libavcodec.a(vda_h264_dec.o)
"_CVPixelBufferIsPlanar", referenced from:
_vdadec_decode in libavcodec.a(vda_h264_dec.o)
"_CVPixelBufferLockBaseAddress", referenced from:
_vdadec_decode in libavcodec.a(vda_h264_dec.o)
"_CVPixelBufferRelease", referenced from:
_release_buffer in libavcodec.a(vda_h264_dec.o)
_vda_old_h264_end_frame in libavcodec.a(vda_h264.o)
_vda_h264_uninit in libavcodec.a(vda_h264.o)
_ff_vda_output_callback in libavcodec.a(vda_h264.o)
_release_buffer in libavcodec.a(vda_h264.o)
_vda_h264_release_buffer in libavcodec.a(vda_h264.o)
"_CVPixelBufferRetain", referenced from:
_vdadec_decode in libavcodec.a(vda_h264_dec.o)
_vda_decoder_callback in libavcodec.a(vda_h264.o)
_ff_vda_output_callback in libavcodec.a(vda_h264.o)
"_CVPixelBufferUnlockBaseAddress", referenced from:
_release_buffer in libavcodec.a(vda_h264_dec.o)
"_VDADecoderCreate", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_VDADecoderDecode", referenced from:
_vda_old_h264_end_frame in libavcodec.a(vda_h264.o)
_vda_h264_end_frame in libavcodec.a(vda_h264.o)
"_VDADecoderDestroy", referenced from:
_ff_vda_destroy_decoder in libavcodec.a(vda_h264.o)
"_VDADecoderFlush", referenced from:
_vda_old_h264_end_frame in libavcodec.a(vda_h264.o)
_vda_h264_end_frame in libavcodec.a(vda_h264.o)
"_iconv", referenced from:
_avcodec_decode_subtitle2 in libavcodec.a(utils.o)
"_iconv_close", referenced from:
_avcodec_open2 in libavcodec.a(utils.o)
_avcodec_decode_subtitle2 in libavcodec.a(utils.o)
"_iconv_open", referenced from:
_avcodec_open2 in libavcodec.a(utils.o)
_avcodec_decode_subtitle2 in libavcodec.a(utils.o)
"_kCFAllocatorDefault", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_vda_old_h264_end_frame in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
_vda_h264_end_frame in libavcodec.a(vda_h264.o)
"_kCFCoreFoundationVersionNumber", referenced from:
_vdadec_init in libavcodec.a(vda_h264_dec.o)
"_kCFTypeDictionaryKeyCallBacks", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_kCFTypeDictionaryValueCallBacks", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_kCVPixelBufferIOSurfacePropertiesKey", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_kCVPixelBufferPixelFormatTypeKey", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_kVDADecoderConfiguration_Height", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_kVDADecoderConfiguration_SourceFormat", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_kVDADecoderConfiguration_Width", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_kVDADecoderConfiguration_avcCData", referenced from:
_ff_vda_create_decoder in libavcodec.a(vda_h264.o)
_ff_vda_default_init in libavcodec.a(vda_h264.o)
"_swr_alloc", referenced from:
_opus_decode_init in libavcodec.a(opusdec.o)
"_swr_close", referenced from:
_opus_decode_packet in libavcodec.a(opusdec.o)
_opus_decode_flush in libavcodec.a(opusdec.o)
"_swr_convert", referenced from:
_opus_decode_packet in libavcodec.a(opusdec.o)
"_swr_free", referenced from:
_opus_decode_close in libavcodec.a(opusdec.o)
"_swr_init", referenced from:
_opus_decode_packet in libavcodec.a(opusdec.o)
"_swr_is_initialized", referenced from:
_opus_decode_packet in libavcodec.a(opusdec.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [x264] Error 1
更新：我只是使用自制软件来安装ffmpeg和libx264。
答案 0 :(得分：4)
您需要将以下框架添加到您的项目中：VideoDecodeAcceleration.framework，CoreVideo.framework，CoreFoundation.framework
要添加它们，请选择您的目标，转到“构建阶段 - >使用库链接二进制文件”，然后单击+按钮并选择您的框架。之后一切都应该编译。
答案 1 :(得分：1)
如果您只需要libx264并且不需要x264 cli而不是在使用./configure --disable-lavf配置期间禁用lavf输入，因为它存在libavcodec / libavformat（lavf）依赖项的问题。