运行 C++ 库在 iOS Xcode 项目中时出错
Error when running C++ libraries in iOS Xcode Project
我的 iOS Xcode 项目中有 C++ 文件。这些文件使用我通过 HomeBrew 调用的下一个库：
- mpg123/1.26.5
- libgcrypt
- ffmpeg
- libgpg-错误
- fftw
- libsndfile
我将它们包含在项目中的方式是设置 HeaderSearch 路径：
以及库搜索路径：
这就是我调用这些库所做的全部工作。编译项目时遇到的错误是下一个：
Undefined symbols for architecture x86_64:
"_mpg123_scan", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_mpg123_format_none", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_mpg123_length", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_mpg123_close", referenced from:
MP3InputStream::close() in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)::ScopedMHandle::~ScopedMHandle() in mp3inputstream.o
"_fftwf_plan_dft_r2c_1d", referenced from:
fftar_float(unsigned long, float*, float*) in fft.o
"_fftwf_free", referenced from:
free_array_float(float*) in fft.o
"_mpg123_read", referenced from:
MP3InputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_fftwf_malloc", referenced from:
new_array_float(unsigned long) in fft.o
"_sf_readf_int", referenced from:
SFInputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in sfinputstream.o
"_mpg123_open", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_avformat_free_context", referenced from:
HLSOutputStream::close() in hlsoutputstream.o
"_mpg123_param", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_avio_open", referenced from:
HLSOutputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned long, unsigned long, double, unsigned long) in hlsoutputstream.o
"_mpg123_delete", referenced from:
MP3InputStream::close() in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)::ScopedMHandle::~ScopedMHandle() in mp3inputstream.o
"_avformat_write_header", referenced from:
HLSOutputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned long, unsigned long, double, unsigned long) in hlsoutputstream.o
"_avcodec_free_context", referenced from:
HLSOutputStream::close_stream() in hlsoutputstream.o
"_swr_free", referenced from:
HLSOutputStream::close_stream() in hlsoutputstream.o
"_fftwf_plan_dft_c2r_1d", referenced from:
fftsr_float(unsigned long, float*, float*) in fft.o
"_swr_get_delay", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_av_log", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_mpg123_getformat", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_av_frame_make_writable", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_fftwf_execute_dft_r2c", referenced from:
fftar_float(unsigned long, float*, float*) in fft.o
"_av_rescale_rnd", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_swr_convert", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"ff_decode(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, WavData&)", referenced from:
_main in testhls.o
"_avcodec_send_frame", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_gcry_cipher_encrypt", referenced from:
Random::seed(unsigned long long, Random::Stream) in random.o
Random::refill_buffer() in random.o
"_av_strerror", referenced from:
av_make_error_string(char*, unsigned long, int) in hlsoutputstream.o
"_avcodec_open2", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_avio_closep", referenced from:
HLSOutputStream::close() in hlsoutputstream.o
"_av_dict_free", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_swr_alloc", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_sf_readf_float", referenced from:
SFInputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in sfinputstream.o
"VResampler::VResampler()", referenced from:
BufferedResamplerImpl<VResampler>::BufferedResamplerImpl(int, int, int) in wmadd.o
resample(WavData const&, int) in wmget.o
"_av_opt_set_int", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_sf_close", referenced from:
SFOutputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>, int, int, int, SFOutputStream::OutFormat) in sfoutputstream.o
SFOutputStream::close() in sfoutputstream.o
SFInputStream::close() in sfinputstream.o
SFInputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>) in sfinputstream.o
"_av_opt_set_sample_fmt", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_mpg123_format", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_swr_init", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_av_frame_get_buffer", referenced from:
HLSOutputStream::alloc_audio_frame(AVSampleFormat, unsigned long long, int, int, Error&) in hlsoutputstream.o
"_gcry_check_version", referenced from:
gcrypt_init() in random.o
"_av_interleaved_write_frame", referenced from:
HLSOutputStream::write_frame(AVRational const*, AVStream*, AVPacket*) in hlsoutputstream.o
"_av_packet_rescale_ts", referenced from:
HLSOutputStream::write_frame(AVRational const*, AVStream*, AVPacket*) in hlsoutputstream.o
"_av_frame_alloc", referenced from:
HLSOutputStream::alloc_audio_frame(AVSampleFormat, unsigned long long, int, int, Error&) in hlsoutputstream.o
"_avcodec_find_encoder", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"Resampler::inpsize() const", referenced from:
BufferedResamplerImpl<Resampler>::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in wmadd.o
void process_resampler<Resampler>(Resampler&, std::__1::vector<float, std::__1::allocator<float> > const&, std::__1::vector<float, std::__1::allocator<float> >&) in wmget.o
"_av_dict_copy", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_avcodec_get_name", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"_avcodec_alloc_context3", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"_av_get_channel_layout", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"_av_log_set_level", referenced from:
HLSOutputStream::HLSOutputStream(int, int, int) in hlsoutputstream.o
"_mpg123_strerror", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
MP3InputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in mp3inputstream.o
"_gcry_randomize", referenced from:
Random::gen_key() in random.o
"_gcry_cipher_close", referenced from:
Random::~Random() in random.o
"_gcry_strerror", referenced from:
Random::die_on_error(char const*, unsigned int) in random.o
"_gcry_cipher_setctr", referenced from:
Random::seed(unsigned long long, Random::Stream) in random.o
"Resampler::setup(unsigned int, unsigned int, unsigned int, unsigned int)", referenced from:
create_resampler(int, int, int) in wmadd.o
resample(WavData const&, int) in wmget.o
"_fftwf_execute_dft_c2r", referenced from:
fftsr_float(unsigned long, float*, float*) in fft.o
"_gcry_strsource", referenced from:
Random::die_on_error(char const*, unsigned int) in random.o
"_avformat_alloc_output_context2", referenced from:
HLSOutputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned long, unsigned long, double, unsigned long) in hlsoutputstream.o
"_gcry_cipher_setkey", referenced from:
Random::Random(unsigned long long, Random::Stream) in random.o
"_avcodec_parameters_from_context", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_sf_open_virtual", referenced from:
SFOutputStream::open(std::__1::vector<unsigned char, std::__1::allocator<unsigned char> >*, int, int, int, SFOutputStream::OutFormat)::$_1::operator()(SF_INFO*) const in sfoutputstream.o
SFInputStream::open(std::__1::vector<unsigned char, std::__1::allocator<unsigned char> > const*)::$_1::operator()(SF_INFO*) const in sfinputstream.o
"_av_rescale_q", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_sf_strerror", referenced from:
SFOutputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>, int, int, int, SFOutputStream::OutFormat) in sfoutputstream.o
SFOutputStream::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in sfoutputstream.o
SFInputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>) in sfinputstream.o
SFInputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in sfinputstream.o
"_mpg123_outblock", referenced from:
MP3InputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_sf_error", referenced from:
SFOutputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>, int, int, int, SFOutputStream::OutFormat) in sfoutputstream.o
SFOutputStream::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in sfoutputstream.o
SFInputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>) in sfinputstream.o
SFInputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in sfinputstream.o
"_gcry_cipher_open", referenced from:
Random::Random(unsigned long long, Random::Stream) in random.o
"_mpg123_rates", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_av_init_packet", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"VResampler::inpsize() const", referenced from:
BufferedResamplerImpl<VResampler>::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in wmadd.o
void process_resampler<VResampler>(VResampler&, std::__1::vector<float, std::__1::allocator<float> > const&, std::__1::vector<float, std::__1::allocator<float> >&) in wmget.o
"_sf_open", referenced from:
SFOutputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int, int, int, SFOutputStream::OutFormat)::$_0::operator()(SF_INFO*) const in sfoutputstream.o
SFInputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)::$_0::operator()(SF_INFO*) const in sfinputstream.o
"_av_opt_set", referenced from:
HLSOutputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned long, unsigned long, double, unsigned long) in hlsoutputstream.o
"Resampler::process()", referenced from:
BufferedResamplerImpl<Resampler>::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in wmadd.o
void process_resampler<Resampler>(Resampler&, std::__1::vector<float, std::__1::allocator<float> > const&, std::__1::vector<float, std::__1::allocator<float> >&) in wmget.o
"VResampler::process()", referenced from:
BufferedResamplerImpl<VResampler>::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in wmadd.o
void process_resampler<VResampler>(VResampler&, std::__1::vector<float, std::__1::allocator<float> > const&, std::__1::vector<float, std::__1::allocator<float> >&) in wmget.o
"_mpg123_init", referenced from:
mp3_init() in mp3inputstream.o
"_av_get_channel_layout_nb_channels", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"_gcry_control", referenced from:
gcrypt_init() in random.o
"_sf_writef_int", referenced from:
SFOutputStream::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in sfoutputstream.o
"Resampler::~Resampler()", referenced from:
BufferedResamplerImpl<Resampler>::~BufferedResamplerImpl() in wmadd.o
resample(WavData const&, int) in wmget.o
"_avformat_new_stream", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"_av_write_trailer", referenced from:
HLSOutputStream::close() in hlsoutputstream.o
"VResampler::~VResampler()", referenced from:
BufferedResamplerImpl<VResampler>::~BufferedResamplerImpl() in wmadd.o
resample(WavData const&, int) in wmget.o
"_av_frame_free", referenced from:
HLSOutputStream::close_stream() in hlsoutputstream.o
"_avcodec_receive_packet", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"Resampler::Resampler()", referenced from:
BufferedResamplerImpl<Resampler>::BufferedResamplerImpl(int, int, int) in wmadd.o
resample(WavData const&, int) in wmget.o
"_mpg123_new", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"VResampler::setup(double, unsigned int, unsigned int)", referenced from:
create_resampler(int, int, int) in wmadd.o
resample(WavData const&, int) in wmget.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
由于您是使用 brew 安装的，因此您正试图 link 反对为 Mac 构建的库。您需要为 iOS 构建这些库。请注意，这通常涉及制作每个库所需的不同体系结构的胖二进制文件。您可以轻松地针对 fftw 测试它并查看 linker 错误是否消失。以下是构建或下载预构建版本的一些参考。
https://github.com/godock/fftw-build
理论上一旦你 link 对抗 iOS 版本，你应该看到像
这样的错误
_fftwf_plan_dft_r2c_1d", referenced from:
fftar_float(unsigned long, float*, float*) in fft.o
_fftwf_free", referenced from:
free_array_float(float*) in fft.o
消失。您还可以选择另一个库替换为 iOS 版本进行测试。例如 ffmpeg 可以在此处找到构建说明。
https://github.com/kewlbear/FFmpeg-iOS-build-script
不幸的是，您将不得不寻找如何构建它们。
我的 iOS Xcode 项目中有 C++ 文件。这些文件使用我通过 HomeBrew 调用的下一个库：
- mpg123/1.26.5
- libgcrypt
- ffmpeg
- libgpg-错误
- fftw
- libsndfile
我将它们包含在项目中的方式是设置 HeaderSearch 路径：
以及库搜索路径：
这就是我调用这些库所做的全部工作。编译项目时遇到的错误是下一个：
Undefined symbols for architecture x86_64:
"_mpg123_scan", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_mpg123_format_none", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_mpg123_length", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_mpg123_close", referenced from:
MP3InputStream::close() in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)::ScopedMHandle::~ScopedMHandle() in mp3inputstream.o
"_fftwf_plan_dft_r2c_1d", referenced from:
fftar_float(unsigned long, float*, float*) in fft.o
"_fftwf_free", referenced from:
free_array_float(float*) in fft.o
"_mpg123_read", referenced from:
MP3InputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_fftwf_malloc", referenced from:
new_array_float(unsigned long) in fft.o
"_sf_readf_int", referenced from:
SFInputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in sfinputstream.o
"_mpg123_open", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_avformat_free_context", referenced from:
HLSOutputStream::close() in hlsoutputstream.o
"_mpg123_param", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_avio_open", referenced from:
HLSOutputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned long, unsigned long, double, unsigned long) in hlsoutputstream.o
"_mpg123_delete", referenced from:
MP3InputStream::close() in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)::ScopedMHandle::~ScopedMHandle() in mp3inputstream.o
"_avformat_write_header", referenced from:
HLSOutputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned long, unsigned long, double, unsigned long) in hlsoutputstream.o
"_avcodec_free_context", referenced from:
HLSOutputStream::close_stream() in hlsoutputstream.o
"_swr_free", referenced from:
HLSOutputStream::close_stream() in hlsoutputstream.o
"_fftwf_plan_dft_c2r_1d", referenced from:
fftsr_float(unsigned long, float*, float*) in fft.o
"_swr_get_delay", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_av_log", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_mpg123_getformat", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_av_frame_make_writable", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_fftwf_execute_dft_r2c", referenced from:
fftar_float(unsigned long, float*, float*) in fft.o
"_av_rescale_rnd", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_swr_convert", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"ff_decode(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, WavData&)", referenced from:
_main in testhls.o
"_avcodec_send_frame", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_gcry_cipher_encrypt", referenced from:
Random::seed(unsigned long long, Random::Stream) in random.o
Random::refill_buffer() in random.o
"_av_strerror", referenced from:
av_make_error_string(char*, unsigned long, int) in hlsoutputstream.o
"_avcodec_open2", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_avio_closep", referenced from:
HLSOutputStream::close() in hlsoutputstream.o
"_av_dict_free", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_swr_alloc", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_sf_readf_float", referenced from:
SFInputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in sfinputstream.o
"VResampler::VResampler()", referenced from:
BufferedResamplerImpl<VResampler>::BufferedResamplerImpl(int, int, int) in wmadd.o
resample(WavData const&, int) in wmget.o
"_av_opt_set_int", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_sf_close", referenced from:
SFOutputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>, int, int, int, SFOutputStream::OutFormat) in sfoutputstream.o
SFOutputStream::close() in sfoutputstream.o
SFInputStream::close() in sfinputstream.o
SFInputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>) in sfinputstream.o
"_av_opt_set_sample_fmt", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_mpg123_format", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_swr_init", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_av_frame_get_buffer", referenced from:
HLSOutputStream::alloc_audio_frame(AVSampleFormat, unsigned long long, int, int, Error&) in hlsoutputstream.o
"_gcry_check_version", referenced from:
gcrypt_init() in random.o
"_av_interleaved_write_frame", referenced from:
HLSOutputStream::write_frame(AVRational const*, AVStream*, AVPacket*) in hlsoutputstream.o
"_av_packet_rescale_ts", referenced from:
HLSOutputStream::write_frame(AVRational const*, AVStream*, AVPacket*) in hlsoutputstream.o
"_av_frame_alloc", referenced from:
HLSOutputStream::alloc_audio_frame(AVSampleFormat, unsigned long long, int, int, Error&) in hlsoutputstream.o
"_avcodec_find_encoder", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"Resampler::inpsize() const", referenced from:
BufferedResamplerImpl<Resampler>::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in wmadd.o
void process_resampler<Resampler>(Resampler&, std::__1::vector<float, std::__1::allocator<float> > const&, std::__1::vector<float, std::__1::allocator<float> >&) in wmget.o
"_av_dict_copy", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_avcodec_get_name", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"_avcodec_alloc_context3", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"_av_get_channel_layout", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"_av_log_set_level", referenced from:
HLSOutputStream::HLSOutputStream(int, int, int) in hlsoutputstream.o
"_mpg123_strerror", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
MP3InputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in mp3inputstream.o
"_gcry_randomize", referenced from:
Random::gen_key() in random.o
"_gcry_cipher_close", referenced from:
Random::~Random() in random.o
"_gcry_strerror", referenced from:
Random::die_on_error(char const*, unsigned int) in random.o
"_gcry_cipher_setctr", referenced from:
Random::seed(unsigned long long, Random::Stream) in random.o
"Resampler::setup(unsigned int, unsigned int, unsigned int, unsigned int)", referenced from:
create_resampler(int, int, int) in wmadd.o
resample(WavData const&, int) in wmget.o
"_fftwf_execute_dft_c2r", referenced from:
fftsr_float(unsigned long, float*, float*) in fft.o
"_gcry_strsource", referenced from:
Random::die_on_error(char const*, unsigned int) in random.o
"_avformat_alloc_output_context2", referenced from:
HLSOutputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned long, unsigned long, double, unsigned long) in hlsoutputstream.o
"_gcry_cipher_setkey", referenced from:
Random::Random(unsigned long long, Random::Stream) in random.o
"_avcodec_parameters_from_context", referenced from:
HLSOutputStream::open_audio(AVCodec*, AVDictionary*) in hlsoutputstream.o
"_sf_open_virtual", referenced from:
SFOutputStream::open(std::__1::vector<unsigned char, std::__1::allocator<unsigned char> >*, int, int, int, SFOutputStream::OutFormat)::$_1::operator()(SF_INFO*) const in sfoutputstream.o
SFInputStream::open(std::__1::vector<unsigned char, std::__1::allocator<unsigned char> > const*)::$_1::operator()(SF_INFO*) const in sfinputstream.o
"_av_rescale_q", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"_sf_strerror", referenced from:
SFOutputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>, int, int, int, SFOutputStream::OutFormat) in sfoutputstream.o
SFOutputStream::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in sfoutputstream.o
SFInputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>) in sfinputstream.o
SFInputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in sfinputstream.o
"_mpg123_outblock", referenced from:
MP3InputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_sf_error", referenced from:
SFOutputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>, int, int, int, SFOutputStream::OutFormat) in sfoutputstream.o
SFOutputStream::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in sfoutputstream.o
SFInputStream::open(std::__1::function<SNDFILE_tag* (SF_INFO*)>) in sfinputstream.o
SFInputStream::read_frames(std::__1::vector<float, std::__1::allocator<float> >&, unsigned long) in sfinputstream.o
"_gcry_cipher_open", referenced from:
Random::Random(unsigned long long, Random::Stream) in random.o
"_mpg123_rates", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"_av_init_packet", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"VResampler::inpsize() const", referenced from:
BufferedResamplerImpl<VResampler>::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in wmadd.o
void process_resampler<VResampler>(VResampler&, std::__1::vector<float, std::__1::allocator<float> > const&, std::__1::vector<float, std::__1::allocator<float> >&) in wmget.o
"_sf_open", referenced from:
SFOutputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int, int, int, SFOutputStream::OutFormat)::$_0::operator()(SF_INFO*) const in sfoutputstream.o
SFInputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)::$_0::operator()(SF_INFO*) const in sfinputstream.o
"_av_opt_set", referenced from:
HLSOutputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned long, unsigned long, double, unsigned long) in hlsoutputstream.o
"Resampler::process()", referenced from:
BufferedResamplerImpl<Resampler>::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in wmadd.o
void process_resampler<Resampler>(Resampler&, std::__1::vector<float, std::__1::allocator<float> > const&, std::__1::vector<float, std::__1::allocator<float> >&) in wmget.o
"VResampler::process()", referenced from:
BufferedResamplerImpl<VResampler>::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in wmadd.o
void process_resampler<VResampler>(VResampler&, std::__1::vector<float, std::__1::allocator<float> > const&, std::__1::vector<float, std::__1::allocator<float> >&) in wmget.o
"_mpg123_init", referenced from:
mp3_init() in mp3inputstream.o
"_av_get_channel_layout_nb_channels", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"_gcry_control", referenced from:
gcrypt_init() in random.o
"_sf_writef_int", referenced from:
SFOutputStream::write_frames(std::__1::vector<float, std::__1::allocator<float> > const&) in sfoutputstream.o
"Resampler::~Resampler()", referenced from:
BufferedResamplerImpl<Resampler>::~BufferedResamplerImpl() in wmadd.o
resample(WavData const&, int) in wmget.o
"_avformat_new_stream", referenced from:
HLSOutputStream::add_stream(AVCodec**, AVCodecID) in hlsoutputstream.o
"_av_write_trailer", referenced from:
HLSOutputStream::close() in hlsoutputstream.o
"VResampler::~VResampler()", referenced from:
BufferedResamplerImpl<VResampler>::~BufferedResamplerImpl() in wmadd.o
resample(WavData const&, int) in wmget.o
"_av_frame_free", referenced from:
HLSOutputStream::close_stream() in hlsoutputstream.o
"_avcodec_receive_packet", referenced from:
HLSOutputStream::write_audio_frame(Error&) in hlsoutputstream.o
"Resampler::Resampler()", referenced from:
BufferedResamplerImpl<Resampler>::BufferedResamplerImpl(int, int, int) in wmadd.o
resample(WavData const&, int) in wmget.o
"_mpg123_new", referenced from:
MP3InputStream::open(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
MP3InputStream::detect(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in mp3inputstream.o
"VResampler::setup(double, unsigned int, unsigned int)", referenced from:
create_resampler(int, int, int) in wmadd.o
resample(WavData const&, int) in wmget.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
由于您是使用 brew 安装的，因此您正试图 link 反对为 Mac 构建的库。您需要为 iOS 构建这些库。请注意，这通常涉及制作每个库所需的不同体系结构的胖二进制文件。您可以轻松地针对 fftw 测试它并查看 linker 错误是否消失。以下是构建或下载预构建版本的一些参考。
https://github.com/godock/fftw-build
理论上一旦你 link 对抗 iOS 版本，你应该看到像
这样的错误_fftwf_plan_dft_r2c_1d", referenced from:
fftar_float(unsigned long, float*, float*) in fft.o
_fftwf_free", referenced from:
free_array_float(float*) in fft.o
消失。您还可以选择另一个库替换为 iOS 版本进行测试。例如 ffmpeg 可以在此处找到构建说明。
https://github.com/kewlbear/FFmpeg-iOS-build-script
不幸的是，您将不得不寻找如何构建它们。