On Thu, Oct 17, 2013 at 12:05 PM, Brian Mearns <[email protected]> wrote: > On Thu, Oct 17, 2013 at 11:53 AM, Anton Khirnov <[email protected]> wrote: >> >> >> On Thu, 17 Oct 2013 10:44:23 -0400, Brian Mearns <[email protected]> wrote: >> > I'm trying to build a very minimal program from the ffmpeg src >> > distributions examples, and it seems it can't find any of the libav* >> > functions. >> > >> > I'm running windows 7 (64-bit) and mingw gcc version 4.7.1. >> > >> > I've just downloaded version 9.7 of libav from >> > http://win32.libav.org/releases/libav-9.7-win64.7z, and unpacked it so that >> > bin/, include/, lib/, and share/ are all under C:\apps\pf\libav\. >> > >> > From the ffmpeg examples (external to libav), I can run pkg-config and get >> > the options for libav, and I use the following commands to compile and >> > link, respectively: >> > >> > >gcc -o metadata.obj -c -IC:\apps\pf\libav\include metadata.c >> > >> > >gcc -o metadata.exe metadata.obj -LC:\apps\pf\libav\lib -lavutil >> > -lavdevice -lavformat -lavfilter -lavcodec -lavresample -lswscale >> >> Order matters here, libraries must appears in the order of dependency. lavf >> depends on lavc, lavfi on sws and lavr, everything depends on lavu. That >> means >> that -lavcodec must be after -lavformat, -lavutil must be last, etc. >> >> -- >> Anton Khirnov > > Thanks, but it hasn't helped. I tried trimming down the libraries and > putting them in the order you specified, and got the exact same > errors. My command is now: > > gcc -o metadata.exe metadata.obj -LC:\apps\pf\libav\lib -lavformat > -lavcodec -lavutil > > -Brian
My problem was that I was building with mingw, not mingw-w64. Once I finally got mingw-64 installed, I am able to build against libav. -Brian _______________________________________________ libav-api mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-api
