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  • Cant link against ffmpeg static build

    24 mars 2017, par David Barishev

    I have build ffmpeg libraries statically for x86 android using a custom configuration.Now i wanted to add them in my android project.

    Im using ffmpeg 3.2.git, android studio 2.3.

    I created a folder named distribution which had my binaries, and the minimum headers i needed for it to not tell me about missing header (Except for the avutil- i just included them all), located the root of my project.
    Here is a file tree :

    distribution
    
├── libavcodec
    
│   ├── lib
    
│   │   └── x86
    
│   │       └── libavcodec.a
    
│   ├── avcodec.h
    
│   └── version.h
    
├── libavfilter
    
│   ├── lib
    
│   │   └── x86
    
│   │       └── libavfilter.a
    
│   ├── avfiltergraph.h
    
│   └── avfilter.h
    
├── libavformat
    
│   ├── lib
    
│   │   └── x86
    
│   │       └── libavformat.a
    
│   ├── avformat.h
    
│   ├── avio.h
    
│   └── version.h
    
├── libavutil
    
│   ├── lib
    
│   │   └── x86
    
│   │       └── libavutil.a
    
│   ├── attributes.h
    
│   ├── avconfig.h
    
│   ├── avutil.h
    
│   ├── buffer.h
    
│   ├── buffer_internal.h
    
│   ├── camellia.h
    
│   ├── cast5.h
    
│   ├── channel_layout.h
    
│   ├── colorspace.h
    
│   ├── color_utils.h
    
│   ├── common.h
    
│   ├── cpu.h
    
│   ├── cpu_internal.h
    
│   ├── crc.h
    
│   ├── des.h
    
│   ├── dict.h
    
│   ├── display.h
    
│   ├── downmix_info.h
    
│   ├── dynarray.h
    
│   ├── error.h
    
│   ├── eval.h
    
│   ├── ffmath.h
    
│   ├── ffversion.h
    
│   ├── fifo.h
    
│   ├── file.h
    
│   ├── fixed_dsp.h
    
│   ├── float_dsp.h
    
│   ├── frame.h
    
│   ├── hash.h
    
│   ├── hmac.h
    
│   ├── hwcontext_cuda.h
    
│   ├── hwcontext_cuda_internal.h
    
│   ├── hwcontext_dxva2.h
    
│   ├── hwcontext.h
    
│   ├── hwcontext_internal.h
    
│   ├── hwcontext_qsv.h
    
│   ├── hwcontext_vaapi.h
    
│   ├── hwcontext_vdpau.h
    
│   ├── imgutils.h
    
│   ├── integer.h
    
│   ├── internal.h
    
│   ├── intfloat.h
    
│   ├── intmath.h
    
│   ├── intreadwrite.h
    
│   ├── lfg.h
    
│   ├── libm.h
    
│   ├── lls.h
    
│   ├── log.h
    
│   ├── lzo.h
    
│   ├── macros.h
    
│   ├── mastering_display_metadata.h
    
│   ├── mathematics.h
    
│   ├── md5.h
    
│   ├── mem.h
    
│   ├── mem_internal.h
    
│   ├── motion_vector.h
    
│   ├── murmur3.h
    
│   ├── opencl.h
    
│   ├── opencl_internal.h
    
│   ├── opt.h
    
│   ├── parseutils.h
    
│   ├── pca.h
    
│   ├── pixdesc.h
    
│   ├── pixelutils.h
    
│   ├── pixfmt.h
    
│   ├── qsort.h
    
│   ├── random_seed.h
    
│   ├── rational.h
    
│   ├── rc4.h
    
│   ├── replaygain.h
    
│   ├── reverse.h
    
│   ├── ripemd.h
    
│   ├── samplefmt.h
    
│   ├── sha512.h
    
│   ├── sha.h
    
│   ├── softfloat.h
    
│   ├── softfloat_ieee754.h
    
│   ├── softfloat_tables.h
    
│   ├── spherical.h
    
│   ├── stereo3d.h
    
│   ├── tablegen.h
    
│   ├── tea.h
    
│   ├── thread.h
    
│   ├── threadmessage.h
    
│   ├── timecode.h
    
│   ├── time.h
    
│   ├── time_internal.h
    
│   ├── timer.h
    
│   ├── timestamp.h
    
│   ├── tree.h
    
│   ├── twofish.h
    
│   └── version.h
    
└── libswresample
    
    ├── lib
    
    │   └── x86
    
    │       └── libswresample.a
    
    ├── swresample.h
    
    └── swresample_internal.h

    I edited my cmake to include the libraries :

    add_library(
    
         native-lib
    
         SHARED
    
         src/main/cpp/native-lib.cpp )
    

    
set(distribution_DIR ${CMAKE_SOURCE_DIR}/../distribution)
    

    
add_library(lib_avcodec STATIC IMPORTED)
    
set_target_properties(lib_avcodec PROPERTIES IMPORTED_LOCATION
    
    ${distribution_DIR}/libavcodec/lib/${ANDROID_ABI}/libavcodec.a)
    

    
add_library(lib_avfilter STATIC IMPORTED)
    
set_target_properties(lib_avfilter PROPERTIES IMPORTED_LOCATION
    
    ${distribution_DIR}/libavfilter/lib/${ANDROID_ABI}/libavfilter.a)
    

    
add_library(lib_avformat STATIC IMPORTED)
    
set_target_properties(lib_avformat PROPERTIES IMPORTED_LOCATION
    
    ${distribution_DIR}/libavformat/lib/${ANDROID_ABI}/libavformat.a)
    

    
add_library(lib_avutil STATIC IMPORTED)
    
set_target_properties(lib_avutil PROPERTIES IMPORTED_LOCATION
    
    ${distribution_DIR}/libavutil/lib/${ANDROID_ABI}/libavutil.a)
    

    
add_library(lib_swresample STATIC IMPORTED)
    
set_target_properties(lib_swresample PROPERTIES IMPORTED_LOCATION
    
    ${distribution_DIR}/libswresample/lib/${ANDROID_ABI}/libswresample.a)
    

    

    
include_directories(
    
                          ${distribution_DIR}
    
                          )
    

    

    
target_link_libraries( 
    
                       native-lib
    

    
                       lib_avcodec
    
                       lib_avfilter
    
                       lib_avformat
    
                       lib_avutil
    
                       lib_swresample
    
                        )

    I also restricted the build to only x86, in my app build.gradle :

    ndk {
    
            // Specifies the ABI configurations of your native
    
            // libraries Gradle should build and package with your APK.
    
            abiFilters 'x86'
    
    }

    The project gradle sync worked successfully.
    I wrote the following code in my cpp file :

    #include 
    

    

    
extern "C"{
    
    #include "libavformat/avformat.h"
    
}
    
JNIEXPORT void JNICALL
    
Java_com_example_david_testffmpegcpp_MainActivity_stringFromJNI(
    
        JNIEnv *env,
    
        jobject /* this */) {
    

    
    av_register_all ();
    
    avformat_network_init ();
    

    

    
}

    Just to check if the library works, but i cant seem to link against the libraries correctly. It complains about undefined symbols.
    What did i do wrong ?

    Error :

    [2/2] Linking CXX shared library 
    

    
..\..\..\..\build\intermediates\cmake\debug\obj\x86\libnative-lib.so
    
FAILED: cmd.exe /C "cd . && D:\AndroidSDK\ndk-bundle\toolchains\llvm\prebuilt\windows-x86_64\bin\clang++.exe  --target=i686-none-linux-android --gcc-toolchain=D:/AndroidSDK/ndk-bundle/toolchains/x86-4.9/prebuilt/windows-x86_64 --sysroot=D:/AndroidSDK/ndk-bundle/platforms/android-16/arch-x86 -fPIC -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -mstackrealign -Wa,--noexecstack -Wformat -Werror=format-security  -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -mstackrealign -Wa,--noexecstack -Wformat -Werror=format-security   -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info  -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libnative-lib.so -o ..\..\..\..\build\intermediates\cmake\debug\obj\x86\libnative-lib.so CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o  -llog ../../../../../distribution/libavcodec/lib/x86/libavcodec.a ../../../../../distribution/libavfilter/lib/x86/libavfilter.a ../../../../../distribution/libavformat/lib/x86/libavformat.a ../../../../../distribution/libavutil/lib/x86/libavutil.a ../../../../../distribution/libswresample/lib/x86/libswresample.a -lm "D:/AndroidSDK/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/x86/libgnustl_static.a" && cd ."
    
src/libavformat/allformats.c:51: error: undefined reference to 'avcodec_register_all'
    
  src/libavformat/id3v2.c:1009: error: undefined reference to 'uncompress'
    
  src/libavformat/id3v2.c:1153: error: undefined reference to 'av_init_packet'
    
  src/libavformat/matroskadec.c:1393: error: undefined reference to 'inflateInit_'
    
  src/libavformat/matroskadec.c:1408: error: undefined reference to 'inflate'
    
  src/libavformat/matroskadec.c:1401: error: undefined reference to 'inflateEnd'
    
  src/libavformat/matroskadec.c:1411: error: undefined reference to 'inflateEnd'
    
  src/libavformat/matroskadec.c:3113: error: undefined reference to 'av_new_packet'
    
  src/libavformat/matroskadec.c:3134: error: undefined reference to 'av_packet_new_side_data'
    
  src/libavformat/matroskadec.c:2855: error: undefined reference to 'av_new_packet'
    
  src/libavformat/matroskadec.c:3147: error: undefined reference to 'av_packet_new_side_data'
    
  src/libavformat/matroskadec.c:3022: error: undefined reference to 'av_new_packet'
    
  src/libavformat/matroskadec.c:3031: error: undefined reference to 'av_packet_new_side_data'
    
  src/libavformat/matroskadec.c:3042: error: undefined reference to 'av_packet_new_side_data'
    
  src/libavformat/matroskadec.c:3151: error: undefined reference to 'av_packet_unref'
    
  src/libavformat/matroskadec.c:2680: error: undefined reference to 'av_packet_unref'
    
  src/libavformat/matroskadec.c:963: error: undefined reference to 'av_fast_padded_malloc'
    
  src/libavformat/matroskadec.c:2163: error: undefined reference to 'av_get_codec_tag_string'
    
  src/libavformat/matroskadec.c:2680: error: undefined reference to 'av_packet_unref'
    
  src/libavformat/matroskadec.c:2579: error: undefined reference to 'av_init_packet'
    
  src/libavformat/matroskadec.c:2580: error: undefined reference to 'av_new_packet'
    
  src/libavformat/matroskadec.c:1715: error: undefined reference to 'avpriv_mpeg4audio_sample_rates'
    
  src/libavformat/matroskadec.c:1715: error: undefined reference to 'avpriv_mpeg4audio_sample_rates'
    
  src/libavformat/matroskadec.c:1715: error: undefined reference to 'avpriv_mpeg4audio_sample_rates'
    
  src/libavformat/matroskadec.c:1866: error: undefined reference to 'avcodec_chroma_pos_to_enum'
    
  src/libavformat/matroskadec.c:2680: error: undefined reference to 'av_packet_unref'
    
  src/libavformat/matroskaenc.c:2482: error: undefined reference to 'avcodec_get_type'
    
  src/libavformat/matroskaenc.c:646: error: undefined reference to 'avpriv_split_xiph_headers'
    
  src/libavformat/matroskaenc.c:1066: error: undefined reference to 'av_get_bits_per_sample'
    
  src/libavformat/matroskaenc.c:723: error: undefined reference to 'avpriv_mpeg4audio_get_config'
    
  src/libavformat/matroskaenc.c:875: error: undefined reference to 'avcodec_enum_to_chroma_pos'
    
  src/libavformat/matroskaenc.c:813: error: undefined reference to 'avcodec_get_name'
    
  src/libavformat/matroskaenc.c:806: error: undefined reference to 'avcodec_get_name'
    
  src/libavformat/matroskaenc.c:824: error: undefined reference to 'avcodec_get_name'
    
  .....

  • FFMPEG Link error

    30 novembre 2014, par Thomas

    I’m trying to compile a modified version of this transcoding example from the FFMPEG site, I’ve used all the required includes and joined the libs using this :

    INCLUDEPATH += $$(FFMPEG_DEV_PATH)\include
    
    LIBS += -L$$(FFMPEG_DEV_PATH)\lib -lavformat -lavcodec -lavutil -lswscale -liconv -lz -lavfilter

    but I get this linking error that I can’t understand :

      "avio_close(AVIOContext*)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "av_strerror(int, char*, unsigned long)", referenced from:
    
      av_make_error_string(char*, unsigned long, int) in PhVideoEncoder.o
    
  "av_rescale_q(long long, AVRational, AVRational)", referenced from:
    
      PhVideoEncoder::encode_write_frame(AVFrame*, unsigned int, int*) in PhVideoEncoder.o
    
  "av_frame_free(AVFrame**)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
      PhVideoEncoder::filter_encode_write_frame(AVFrame*, unsigned int) in PhVideoEncoder.o
    
      PhVideoEncoder::encode_write_frame(AVFrame*, unsigned int, int*) in PhVideoEncoder.o
    
  "av_read_frame(AVFormatContext*, AVPacket*)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "avcodec_close(AVCodecContext*)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "avcodec_open2(AVCodecContext*, AVCodec const*, AVDictionary**)", referenced from:
    
      PhVideoEncoder::open_input_file(char const*) in PhVideoEncoder.o
    
      PhVideoEncoder::open_output_file(char const*) in PhVideoEncoder.o
    
  "av_dump_format(AVFormatContext*, int, char const*, int)", referenced from:
    
      PhVideoEncoder::open_input_file(char const*) in PhVideoEncoder.o
    
      PhVideoEncoder::open_output_file(char const*) in PhVideoEncoder.o
    
  "av_frame_alloc()", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
      PhVideoEncoder::filter_encode_write_frame(AVFrame*, unsigned int) in PhVideoEncoder.o
    
  "av_free_packet(AVPacket*)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "av_init_packet(AVPacket*)", referenced from:
    
      PhVideoEncoder::encode_write_frame(AVFrame*, unsigned int, int*) in PhVideoEncoder.o
    
  "av_opt_set_bin(void*, char const*, unsigned char const*, int, int)", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "av_register_all()", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "av_rescale_q_rnd(long long, AVRational, AVRational, AVRounding)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
      PhVideoEncoder::encode_write_frame(AVFrame*, unsigned int, int*) in PhVideoEncoder.o
    
  "av_write_trailer(AVFormatContext*)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "avfilter_graph_free(AVFilterGraph**)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "avfilter_inout_free(AVFilterInOut**)", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "avformat_new_stream(AVFormatContext*, AVCodec const*)", referenced from:
    
      PhVideoEncoder::open_output_file(char const*) in PhVideoEncoder.o
    
  "avformat_open_input(AVFormatContext**, char const*, AVInputFormat*, AVDictionary**)", referenced from:
    
      PhVideoEncoder::open_input_file(char const*) in PhVideoEncoder.o
    
  "avcodec_copy_context(AVCodecContext*, AVCodecContext const*)", referenced from:
    
      PhVideoEncoder::open_output_file(char const*) in PhVideoEncoder.o
    
  "avcodec_find_decoder(AVCodecID)", referenced from:
    
      PhVideoEncoder::open_input_file(char const*) in PhVideoEncoder.o
    
  "avcodec_find_encoder(AVCodecID)", referenced from:
    
      PhVideoEncoder::open_output_file(char const*) in PhVideoEncoder.o
    
  "avfilter_get_by_name(char const*)", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "avfilter_graph_alloc()", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "avfilter_inout_alloc()", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "avformat_close_input(AVFormatContext**)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "avcodec_decode_audio4(AVCodecContext*, AVFrame*, int*, AVPacket const*)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "avcodec_decode_video2(AVCodecContext*, AVFrame*, int*, AVPacket const*)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "avcodec_encode_audio2(AVCodecContext*, AVPacket*, AVFrame const*, int*)", referenced from:
    
      PhVideoEncoder::encode_write_frame(AVFrame*, unsigned int, int*) in PhVideoEncoder.o
    
  "avcodec_encode_video2(AVCodecContext*, AVPacket*, AVFrame const*, int*)", referenced from:
    
      PhVideoEncoder::encode_write_frame(AVFrame*, unsigned int, int*) in PhVideoEncoder.o
    
  "avfilter_graph_config(AVFilterGraph*, void*)", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "avfilter_register_all()", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "avformat_free_context(AVFormatContext*)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "avformat_write_header(AVFormatContext*, AVDictionary**)", referenced from:
    
      PhVideoEncoder::open_output_file(char const*) in PhVideoEncoder.o
    
  "av_get_sample_fmt_name(AVSampleFormat)", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "av_buffersink_get_frame(AVFilterContext*, AVFrame*)", referenced from:
    
      PhVideoEncoder::filter_encode_write_frame(AVFrame*, unsigned int) in PhVideoEncoder.o
    
  "avfilter_graph_parse_ptr(AVFilterGraph*, char const*, AVFilterInOut**, AVFilterInOut**, void*)", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "avformat_find_stream_info(AVFormatContext*, AVDictionary**)", referenced from:
    
      PhVideoEncoder::open_input_file(char const*) in PhVideoEncoder.o
    
  "av_interleaved_write_frame(AVFormatContext*, AVPacket*)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
      PhVideoEncoder::encode_write_frame(AVFrame*, unsigned int, int*) in PhVideoEncoder.o
    
  "av_buffersrc_add_frame_flags(AVFilterContext*, AVFrame*, int)", referenced from:
    
      PhVideoEncoder::filter_encode_write_frame(AVFrame*, unsigned int) in PhVideoEncoder.o
    
  "avfilter_graph_create_filter(AVFilterContext**, AVFilter const*, char const*, char const*, void*, AVFilterGraph*)", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "av_get_default_channel_layout(int)", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "avformat_alloc_output_context2(AVFormatContext**, AVOutputFormat*, char const*, char const*)", referenced from:
    
      PhVideoEncoder::open_output_file(char const*) in PhVideoEncoder.o
    
  "av_get_channel_layout_nb_channels(unsigned long long)", referenced from:
    
      PhVideoEncoder::open_output_file(char const*) in PhVideoEncoder.o
    
  "av_frame_get_best_effort_timestamp(AVFrame const*)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "av_log(void*, int, char const*, ...)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
      PhVideoEncoder::filter_encode_write_frame(AVFrame*, unsigned int) in PhVideoEncoder.o
    
      PhVideoEncoder::flush_encoder(unsigned int) in PhVideoEncoder.o
    
      PhVideoEncoder::open_input_file(char const*) in PhVideoEncoder.o
    
      PhVideoEncoder::open_output_file(char const*) in PhVideoEncoder.o
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
      PhVideoEncoder::encode_write_frame(AVFrame*, unsigned int, int*) in PhVideoEncoder.o
    
      ...
    
  "av_free(void*)", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "av_malloc(unsigned long)", referenced from:
    
      av_malloc_array(unsigned long, unsigned long) in PhVideoEncoder.o
    
  "av_strdup(char const*)", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "avio_open(AVIOContext**, char const*, int)", referenced from:
    
      PhVideoEncoder::open_output_file(char const*) in PhVideoEncoder.o

    I tried looking for missing libraries but with no luck... What am I missing ?

    EDIT

    Thanks to the first answer, I added the extern C stuff but I still face a few errors :

    Undefined symbols for architecture x86_64:
    
  "_av_buffersink_get_frame", referenced from:
    
      PhVideoEncoder::filter_encode_write_frame(AVFrame*, unsigned int) in PhVideoEncoder.o
    
  "_av_buffersrc_add_frame_flags", referenced from:
    
      PhVideoEncoder::filter_encode_write_frame(AVFrame*, unsigned int) in PhVideoEncoder.o
    
  "_avfilter_get_by_name", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "_avfilter_graph_alloc", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "_avfilter_graph_config", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "_avfilter_graph_create_filter", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "_avfilter_graph_free", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
  "_avfilter_graph_parse_ptr", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "_avfilter_inout_alloc", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "_avfilter_inout_free", referenced from:
    
      PhVideoEncoder::init_filter(FilteringContext*, AVCodecContext*, AVCodecContext*, char const*) in PhVideoEncoder.o
    
  "_avfilter_register_all", referenced from:
    
      PhVideoEncoder::PhVideoEncoder(QString) in PhVideoEncoder.o
    
ld: symbol(s) not found for architecture x86_64

  • Anomalie #3351 (Fermé) : Le header ’link’ est affiché dans la page généré au lieu d’être envoyé pa...

    23 novembre 2014, par marcimat ☺☮☯♫

    Bon, en fait c’était déjà résolu par spip:r21816
    Bizarrement tout n’était pas à jour dans mon test.
    Super.
    Merci :)

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