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• build x264 failed on apple M1, No working C compiler found

  29 novembre 2021, par louxiu
  

  1. Apple M1, clang

  


  


  Apple clang version 13.0.0 (clang-1300.0.29.3)
Target: arm64-apple-darwin21.1.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin


  


  


  2. x264 version x264-snapshot-20191217-2245

     


  


  3. configure

     


  


  


   ./configure --prefix=/tmp/  --enable-static


  


  

  4. config.log

  


  


  checking for -Werror=unknown-warning-option... yes
checking for -mdynamic-no-pic... yes
x264 configure script
Command line options: "--prefix=/tmp/" "--enable-static"

checking whether gcc works... no
Failed commandline was:
--------------------------------------------------
gcc conftest.c  -Wall -I. -I$(SRCPATH) -mdynamic-no-pic -arch armv7  -Werror=unknown-warning-option    -lm -arch armv7 -o conftest
ld: warning: ignoring file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/13.0.0/lib/darwin/libclang_rt.osx.a, missing required architecture armv7 in file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/13.0.0/lib/darwin/libclang_rt.osx.a (5 slices)
ld: warning: ignoring file /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/lib/libm.tbd, missing required architecture armv7 in file /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/lib/libm.tbd (3 slices)
ld: warning: ignoring file /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/lib/libSystem.tbd, missing required architecture armv7 in file /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/lib/libSystem.tbd (3 slices)
ld: dynamic main executables must link with libSystem.dylib for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
--------------------------------------------------
Failed program was:
--------------------------------------------------
int main (void) {  return 0; }
--------------------------------------------------
DIED: No working C compiler found.


  


• How to resolve FFmpeg undefined symbols error when using libavformat in Dolphin

  24 septembre 2021, par Meh.

  MOVED FROM : https://superuser.com/questions/1676856/how-to-build-ffmpeg-with-apple-symbols?noredirect=1#comment2572799_1676856

  


  I'm trying to build FFmpeg 3.2.4 with OpenSSL >= 2.0.7 (3.0.0) from source so I can use it's binaries to build Dolphin-Emu.

  


  I just do this : ./configure --enable-gnutls and when I build with make -j5 (-j5 speeds up the process) then make install. When I use it in compiling Dolphin , I get an error somewhat like this :

  


  Undefined symbols for architecture x86_64:
  "_kCVImageBufferColorPrimaries_ITU_R_709_2", referenced from:
      _vtenc_init in libavcodec.a(videotoolboxenc.o)
      _vtenc_init in libavcodec.a(videotoolboxenc.o)
  "_kVDADecoderConfiguration_SourceFormat", referenced from:
  "_kCVImageBufferTransferFunction_ITU_R_2020", referenced from:
      _ff_vda_create_decoder in libavcodec.a(vda_h264.o)
      _vtenc_init in libavcodec.a(videotoolboxenc.o)
  "_kVDADecoderConfiguration_avcCData", referenced from:
  "_CMBlockBufferCopyDataBytes", referenced from:
      _ff_vda_create_decoder in libavcodec.a(vda_h264.o)
      _vtenc_frame in libavcodec.a(videotoolboxenc.o)
  "_kCVImageBufferYCbCrMatrixKey", referenced from:
      _vtenc_init in libavcodec.a(videotoolboxenc.o)
      _vtenc_send_frame in libavcodec.a(videotoolboxenc.o)
  "_SSLSetCertificate", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_CMTimeMake", referenced from:
      _vtenc_send_frame in libavcodec.a(videotoolboxenc.o)
  "_kCVPixelBufferWidthKey", referenced from:
      _vtenc_init in libavcodec.a(videotoolboxenc.o)
  "_VDADecoderCreate", referenced from:
      _ff_vda_create_decoder in libavcodec.a(vda_h264.o)
  "_kVTProfileLevel_H264_High_4_2", referenced from:
      _vtenc_init in libavcodec.a(videotoolboxenc.o)
  "_kCVPixelBufferIOSurfacePropertiesKey", referenced from:
      _ff_vda_create_decoder in libavcodec.a(vda_h264.o)
  "_kVTProfileLevel_H264_Baseline_1_3", referenced from:
      _vtenc_init in libavcodec.a(videotoolboxenc.o)
(example)


  


  These _kV(blahblahblah) symbols are provided by Apple... under <coremedia></coremedia>CoreMedia.h> so my mac should DEFINITELY have this. OpenSSL version is 3.0.0 as there's an error about _SSLSetCertificate not existing.

  


  Does anyone have any ideas why this is throwing undefined symbols for existing symbols ? (My FFmpeg is compiled by clang whenever I use make, and I use gnutls(installed by brew) which should rely on openssl3.0)

  


  Xcode version : 11.3.1 (Only has macos 10.15 SDK)

  


  Linker command to link Dolphin and FFmpeg w/ OpenSSL binaries/libs

  


  /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -O3 -DNDEBUG -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -mmacosx-version-min=10.14.0 -Wl,-search_paths_first -Wl,-headerpad_max_install_names -L/usr/local/lib -Wl,-dead_strip,-dead_strip_dylibs CMakeFiles/dolphin-nogui.dir/Platform.cpp.o CMakeFiles/dolphin-nogui.dir/PlatformHeadless.cpp.o CMakeFiles/dolphin-nogui.dir/MainNoGUI.cpp.o -o ../../../Binaries/dolphin-emu-nogui  ../Core/libcore.a ../UICommon/libuicommon.a ../../../Externals/cpp-optparse/libcpp-optparse.a ../VideoBackends/Null/libvideonull.a ../VideoBackends/OGL/libvideoogl.a ../VideoBackends/Software/libvideosoftware.a ../VideoBackends/Vulkan/libvideovulkan.a ../VideoCommon/libvideocommon.a ../Core/libcore.a ../VideoBackends/Null/libvideonull.a ../VideoBackends/OGL/libvideoogl.a ../VideoBackends/Software/libvideosoftware.a ../VideoBackends/Vulkan/libvideovulkan.a ../VideoCommon/libvideocommon.a ../AudioCommon/libaudiocommon.a /usr/local/lib/libpulse.dylib ../../../Externals/soundtouch/libSoundTouch.a ../../../Externals/FreeSurround/libFreeSurround.a ../../../Externals/cubeb/libcubeb.a -framework AudioUnit -framework CoreAudio -framework CoreServices ../DiscIO/libdiscio.a /usr/lib/libbz2.dylib ../../../Externals/liblzma/liblzma.a ../../../Externals/zstd/libzstd.a ../InputCommon/libinputcommon.a -framework Carbon -framework ForceFeedback /usr/local/lib/libSDL2.dylib -framework Cocoa ../../../Externals/SFML/libsfml-network.a ../../../Externals/SFML/libsfml-system.a ../../../Externals/LZO/liblzo2.a -framework CoreServices -framework IOBluetooth ../../../Externals/mGBA/mgba/libmgba.a -framework Foundation -lm ../../../Externals/hidapi/libhidapi.a ../../../Externals/glslang/libglslang.a ../../../Externals/xxhash/libxxhash.a ../../../Externals/imgui/libimgui.a /usr/local/lib/libavformat.a /usr/local/lib/libavcodec.a /usr/local/lib/libswscale.a /usr/local/lib/libavutil.a ../Common/libcommon.a ../../../Externals/enet/libenet.a ../../../Externals/mbedtls/library/libmbedtls.a ../../../Externals/mbedtls/library/libmbedx509.a ../../../Externals/mbedtls/library/libmbedcrypto.a /usr/lib/libcurl.dylib /usr/lib/libiconv.dylib ../../../Externals/libpng/libpng.a -framework AppKit ../../../Externals/miniupnpc/libminiupnpc.a ../../../Externals/pugixml/libpugixml.a ../../../Externals/fmt/libfmt.a ../../../Externals/Bochs_disasm/libbdisasm.a ../../../Externals/libusb/libusb.a -framework CoreFoundation -framework IOKit /usr/lib/libobjc.dylib ../../../Externals/minizip/libminizip.a /usr/lib/libz.dylib ../../../Externals/discord-rpc/src/libdiscord-rpc.a -lpthread -framework AppKit 


  


• How to add a dependency for a package ?

  25 septembre 2021, par Meh.

  I just built and installed FFmpeg (./configure --disable-asm).
  
And I need to use libavformat in my C++ project.

  


  I use FindFFmpeg.cmake, and when I build, I get a bunch of undefined symbol errors so I have to find libraries :

  


      find_package(FFmpeg COMPONENTS avcodec avformat avutil swresample swscale)
    find_library(COREMEDIA_LIBRARY CoreMedia)
    find_library(VIDEOTOOLBOX_LIBRARY VideoToolbox)
    find_library(COREVIDEO_LIBRARY CoreVideo)
    find_library(AUDIOTOOLBOX_LIBRARY AudioToolbox)
    find_library(SECURITY_LIBRARY Security)

## In another file:

  target_link_libraries(videocommon PRIVATE
    FFmpeg::avcodec
    FFmpeg::avformat
    FFmpeg::avutil
    FFmpeg::swscale
    FFmpeg::swresample
    ${COREMEDIA_LIBRARY}
    ${VIDEOTOOLBOX_LIBRARY}
    ${COREVIDEO_LIBRARY}
    ${AUDIOTOOLBOX_LIBRARY}
    ${SECURITY_LIBRARY}
  )



  


  However, I still get errors from libavformat.a(tls_securetransport.o) :

  


    "_SSLRead", referenced from:
      _tls_read in libavformat.a(tls_securetransport.o)
  "_SSLCreateContext", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLSetCertificate", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLSetIOFuncs", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLSetSessionOption", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLSetPeerDomainName", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SecIdentityCreate", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SecTrustEvaluate", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SecTrustSetAnchorCertificates", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLClose", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
      _tls_close in libavformat.a(tls_securetransport.o)
  "_SSLHandshake", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLSetConnection", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)
  "_SSLCopyPeerTrust", referenced from:
      _tls_open in libavformat.a(tls_securetransport.o)


  


  This is the #include part from the file in question tls_securetransport.c :

  


  #include &#xA;&#xA;#include "avformat.h"&#xA;#include "avio_internal.h"&#xA;#include "internal.h"&#xA;#include "network.h"&#xA;#include "os_support.h"&#xA;#include "url.h"&#xA;#include "tls.h"&#xA;#include "libavcodec/internal.h"&#xA;#include "libavutil/avstring.h"&#xA;#include "libavutil/opt.h"&#xA;#include "libavutil/parseutils.h"&#xA;&#xA;#include <security></security>Security.h>&#xA;#include <security></security>SecureTransport.h>&#xA;#include <corefoundation></corefoundation>CoreFoundation.h>&#xA;

  


  Why is this happening ?

  


  I also get the same result if I were to build with OpenSSL or LibreSSL. What is causing the problem ? My project or incorrectly building FFmpeg ?

  


  If I were to use LibreSSL :

  


  #cmakelists.txt:
find_package(LibreSSL)

#linker
  target_link_libraries(videocommon PRIVATE
    FFmpeg::avcodec
    FFmpeg::avformat
    FFmpeg::avutil
    FFmpeg::swscale
    FFmpeg::swresample
    ${LIBRESSL_LIBRARIES} 
    ${COREMEDIA_LIBRARY}
    ${VIDEOTOOLBOX_LIBRARY}
    ${COREVIDEO_LIBRARY}
    ${AUDIOTOOLBOX_LIBRARY}
  )

#full error
Undefined symbols for architecture x86_64:
  "_tls_config_error", referenced from:
      _ff_tls_open in libavformat.a(tls_libtls.o)
  "_tls_config_insecure_noverifytime", referenced from:
      _ff_tls_open in libavformat.a(tls_libtls.o)
  "_tls_accept_cbs", referenced from:
      _ff_tls_open in libavformat.a(tls_libtls.o)
  "_tls_connect_cbs", referenced from:
      _ff_tls_open in libavformat.a(tls_libtls.o)