[FFmpeg-cvslog] r9281 - trunk/Makefile

[Víctor Paesa]

Hi,

On 6/17/07, Diego Biurrun wrote:
> On Sat, Jun 16, 2007 at 02:07:54AM +0200, V?ctor Paesa wrote:
> >
> > On 6/15/07, Ramiro Ribeiro Polla wrote:
> > > V?ctor Paesa wrote:
> > > >
> > > > On 6/15/07, Diego Biurrun wrote:
> > > >
> > > >> On Tue, Jun 12, 2007 at 11:24:58AM +0200, V?ctor Paesa wrote:
> > > >>
> > > >>> On 6/12/07, Diego Biurrun wrote:
> > > >>>
> > > >>>> On Mon, Jun 11, 2007 at 12:44:58PM -0300, Ramiro Ribeiro Polla wrote:
> > > >>>>
> > > >>>>> diego wrote:
> > > >>>>>
> > > >>>>>> Log:
> > > >>>>>> The video hooks do not depend on the libav* libraries.
> > > >>>>>>
> > > >>>>> Actually, while working on vhooks for MinGW, and re-reading V?ctor's two
> > > >>>>> month effort to get them working on Cygwin, vhooks do depend on the
> > > >>>>> libav* libraries. Since I'm already trying to finish the integration for
> > > >>>>> MinGW, I'll see how it can be set conditionally for Windows platforms.
> > > >>>>>
> > > >>>> It sure compiles standalone here, so I'm very curious to see what you
> > > >>>> are talking about.
> > > >>>>
> > > >>> Broken here on Cygwin:
> > > >>>
> > > >>> $ ./configure --disable-static --enable-shared --enable-gpl --enable-swscaler
> > > >>>
> > > >>> $ make
> > > >>>
> > > > [...]
> > > >
> > > >
> > > >>> gcc -Wl,--warn-common  -rdynamic -export-dynamic
> > > >>> -Wl,-rpath-link,"/home/wzrlpy/src/ffmpeg-9284/ffmpeg"/libavcodec
> > > >>> -Wl,-rpath-link,"/home/wzrlpy/src/ffmpeg-9284/ffmpeg"/libavformat
> > > >>> -Wl,-rpath-link,"/home/wzrlpy/src/ffmpeg-9284/ffmpeg"/libavutil -g -o
> > > >>> null.dll -shared -L"/home/wzrlpy/src/ffmpeg-9284/ffmpeg"/libavformat
> > > >>> -L"/home/wzrlpy/src/ffmpeg-9284/ffmpeg"/libavcodec
> > > >>> -L"/home/wzrlpy/src/ffmpeg-9284/ffmpeg"/libswscale
> > > >>> -L"/home/wzrlpy/src/ffmpeg-9284/ffmpeg"/libavutil null.o -lavformat
> > > >>> -lavcodec -lswscale -lavutil -lz
> > > >>> gcc: unrecognized option `-rdynamic'
> > > >>> /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/bin/ld:
> > > >>> cannot find -lavformat
> > > >>> collect2: ld returned 1 exit status
> > > >>> make[1]: *** [null.dll] Error 1
> > > >>> rm null.o
> > > >>> make[1]: Leaving directory `/home/wzrlpy/src/ffmpeg-9284/ffmpeg/vhook'
> > > >>> make: *** [videohook] Error 2
> > > >>>
> > > >>> Reverting the change fixes the build
> > > >>> (with the unapproved llrintf() patch applied, of course).
> > > >>>
> > > >> Try removing -lavformat from the link command manually.
> > > >
> > > > I'll give it a try this night, but I doubt it works: ld forbids
> > > > undefined references
> > > > in shared objects (for PE binaries, for ELF is OK).
> >
> > Tried&failed:
> >
> > $ gcc -rdynamic -export-dynamic -Wl,--warn-common
> > -Wl,-rpath-link,"/home/Inma/src/ffmpeg-9328"/libavcodec
> > -Wl,-rpath-link,"/home/Inma/src/ffmpeg-9328"/libavformat
> > -Wl,-rpath-link,"/home/Inma/src/ffmpeg-9328"/libavutil -g -o null.dll -shared
> > -L"/home/Inma/src/ffmpeg-9328"/libavformat
> > -L"/home/Inma/src/ffmpeg-9328"/libavcodec
> > -L"/home/Inma/src/ffmpeg-9328"/libswscale
> > -L"/home/Inma/src/ffmpeg-9328"/libavutil null.o
> > -lavcodec -lswscale -lavutil -lz
> > gcc: unrecognized option `-rdynamic'
> > /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/bin/ld:
> > cannot find -lavcodec
> > collect2: ld returned 1 exit status
>
> Of course you need to remove -lavcodec -lswscale -lavutil from the link
> command as well ...

Failed with undefined references:

$ gcc -rdynamic -export-dynamic -Wl,--warn-common
-Wl,-rpath-link,"/home/Inma/src/ffmpeg-9328"/libavcodec
-Wl,-rpath-link,"/home/Inma/src/ffmpeg-9328"/libavformat
-Wl,-rpath-link,"/home/Inma/src/ffmpeg-9328"/libavutil -g -o null.dll -shared
-L"/home/Inma/src/ffmpeg-9328"/libavformat
-L"/home/Inma/src/ffmpeg-9328"/libavcodec
-L"/home/Inma/src/ffmpeg-9328"/libswscale
-L"/home/Inma/src/ffmpeg-9328"/libavutil
null.o -lz
gcc: unrecognized option `-rdynamic'
null.o: In function `Release':
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:45: undefined reference to
`_sws_freeContext'
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:46: undefined reference to
`_sws_freeContext'
null.o: In function `Configure':
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:55: undefined
reference to `_av_mallocz'
null.o: In function `Process':
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:71: undefined reference to
`_avpicture_get_size'
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:72: undefined
reference to `_av_malloc'
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:74: undefined
reference to `_avpicture_fill'
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:77: undefined reference to
`_sws_getCachedContext'
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:103: undefined
reference to `_av_log'
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:88: undefined
reference to `_sws_scale'
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:98: undefined reference to
`_sws_getCachedContext'
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:109: undefined
reference to `_sws_scale'
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:114: undefined
reference to `_av_free'
null.o: In function `Release':
/home/Inma/src/ffmpeg-svntrue/trunk/vhook/null.c:47: undefined
reference to `_av_free'
collect2: ld returned 1 exit status

Regards,
V?ctor