[FFmpeg-user] avformat_find_stream_info broken recently with multiple threads?
volodomanov at gmail.com
Wed Jan 2 01:19:03 CET 2013
Carl Eugen Hoyos wrote:
> Dennis Volodomanov<volodomanov<at> gmail.com> writes:
>> ./configure --arch=x86 --target-os=mingw32
>> --cross-prefix=i686-w64-mingw32- --pkg-config=pkg-config
>> --enable-zlib --enable-bzlib --disable-w32threads --disable-programs
>> --extra-cflags=-DPTW32_STATIC_LIB --disable-stripping
> (--enable-zlib, --enable-bzlib and --disable-w32threads
> look unneeded.)
Yes, perhaps the two zlibs can go, but they're historically there :) The
w32threads is needed so that pthreads are used.
> Does this really produce dll's?
> (It's been some time since I last built on mingw,
> so default behaviour may have changed, although I
> would at least ask if this wouldn't be a bug.)
Yes, it does - I've been using this for a while now. It's a modified
version of zeranoe's scripts.
> Is --extra-cflags=-DPTW32_STATIC_LIB needed?
> What it is good for? Is there a bug report missing?
> (Or is there a bug report?)
This is to use the pthreads library I mentioned earlier. FWIW, I tested
with w32threads and the same problem occurs. It all works fine with
December 3rd build though.
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