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• configure : instruct MSVC 2015 to properly process UTF-8 string literals

  3 février 2017, par Hendrik Leppkes

  configure : instruct MSVC 2015 to properly process UTF-8 string literals
  Without the /UTF-8 switch, the MSVC compiler treats all files as in the
  
  system codepage, instead of in UTF-8, which causes UTF-8 string literals
  
  to be interpreted wrong.
  This switch was only introduced in VS2015 Update 2, and any earlier
  
  versions do not have an equivalent solution.
  Fixes fate-sub-scc on MSVC 2015+
  

  • [DH] configure

• configure : disable the new optimizer in Visual Studio 2015 Update 3

  28 juin 2016, par Hendrik Leppkes

  configure : disable the new optimizer in Visual Studio 2015 Update 3
  Visual Studio 2015 Update 3 introduced a new SSA optimizer, however
  
  it unfortunately causes miscompilations. Until it is fixed, the new
  
  optimizations are disabled and should be re-checked on subsequent
  
  compiler releases.
  Fixes recent FATE failure of fate-lavf-pam on VS2015.
  

  • [DH] configure

• ffmpeg compilation error in windows 10 x64 for Visual Studio 2015 CE

  12 avril 2016, par Anqush

  So i was trying to use FFmpegInterop for win10 UWP application. And followed the specification given on https://trac.ffmpeg.org/wiki/CompilationGuide/WinRT.

  here is some environment information :

  VS2015 Community Edition with 10.0.10240.0 SDK

  OS : Windows 10 Enterprise x64

  PATH were set to:Program Files (x86)/Microsoft Visual Studio 14.0/VC/BIN/x64_ARM

  So when i did this in msys2_shell.bat

  ../../../configure \
  
  --toolchain=msvc \
  
  --disable-programs \
  
  --disable-d3d11va \
  
  --disable-dxva2 \
  
  --arch=x86_64 \
  
  --enable-shared \
  
  --enable-cross-compile \
  
  --target-os=win32 \
  
  --extra-cflags="-MD -DWINAPI_FAMILY=WINAPI_FAMILY_APP -D_WIN32_WINNT=0x0A00" \
  
  --extra-ldflags="-APPCONTAINER WindowsApp.lib" \
  
  --prefix=../../../Build/Windows10/x64

  I got a warning regarding some pkg file that can’t be found and may cause library detection issues.

  For then i ignored it. After that i entered

  make

  this started a series of processing in which there is a lot of possibly harmful warnings. Like :-

  c:\ffmpeginterop\ffmpeg\libavcodec\get_bits.h(307): warning C4101: 're_cache': unreferenced local variable
  
  CC libavformat/srtdec.o
  
  srtdec.c
  
  c:\ffmpeginterop\ffmpeg\libavutil\libm.h(438): warning C4211: nonstandard extension used: redefined extern to static
  
  c:\ffmpeginterop\ffmpeg\libavformat\subtitles.h(189): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

  So my question is that. Is this dangerous to proceed with. Can you help me for i should proceed with my project without any worry or not ? And i would be gratefull if anyone can guide me to watc out for specific errors that this could generate.

  I know this is a lot to ask. But i would be gratefull.
  Thanks

  Edit : Now i cant run the samples included in the ffmpeginterop package. The sample project wont debug. saying these are out of date.