Re: Octave video pkg won't find libavformat during compile

[Xavier Delacour]

On Fri, Sep 5, 2008 at 2:41 PM, charlie strauss
<address@hidden> wrote:
> Hello, I'm trying to install the Octave Video package on a mac with OSX 10.5
>
> I've tried this from two different distributions of octave without success.
>  (The current Fink package manager version, and the current mac binary
> octave.app)  The problem that stops the install is that the compiler cannot
> locate libavformat, and also the error message says something about
> liveavformat.pc (I don't know what that is).
>
> One package managment system I tried for this was Fink. under fink I can
> find several different libraries with simmilar names with some different
> version numbers appended.  I can also install ffmeg.  ffmpeg installs a
> library named libavformat52.0.dynlib.  This however does not fix the
> problem.  the fink Octave is not able to find a libavformat.
>
> perhaps you could give me some hints about how or where to install
> liveavformat in a way that the video package can find it?  Is this just a
> matter of naming convetions? (I tried creating a link to
> libavformat52.o.dynlib call simply libavformat.o.dynlib  but this did not
> work)  Or is 52 the wrong version?    Is it simple as renaming things in the
> configure or makefile?  And what's liveavformat.pc and how do I use it?

This is the pkg-config file that comes with the livavformat/ffmpeg
package. It gives info on how to build against the libavformat library
on your system. See
http://en.wikipedia.org/wiki/Pkg-config

Does the ffmpeg package you've installed have this file? If yes, try
adding the directory it's in to the environment variable
PKG_CONFIG_PATH and rebuilding. Else you could build one that does, or
find another binary package that does.

Failing all that, it should be fairly easy to hack the video package
configure/makefile to use the ffmpeg you have installed instead of
using pkg-config to find it.

HTH,
Xavier

>
> here's the package install error message
>
> pkg -verbose install /Users/cems/Downloads/video-1.
> 0.1.tar.gz
>
> Package libavformat was not found in the pkg-config search path.
> Perhaps you should add the directory containing `libavformat.pc'
> to the PKG_CONFIG_PATH environment variable
> No package 'libavformat' found
> configure: error: need libavformat from FFMpeg
> mkdir (/var/tmp/oct-OHdXEb)
> untar (/Users/cems/Downloads/video-1.0.1.tar.gz, /var/tmp/oct-OHdXEb)
> error: the configure script returned the following error: checking for
> gcc... gcc
> checking for C compiler default output file name... a.out
> checking whether the C compiler works... yes
> checking whether we are cross compiling... no
> checking for suffix of executables...
> checking for suffix of object files... o
> checking whether we are using the GNU C compiler... yes
> checking whether gcc accepts -g... yes
> checking for gcc option to accept ISO C89... none needed
> checking for mkoctfile... mkoctfile
> retrieving compile and link flags from mkoctfile
> checking for F77_FUNC... yes
> checking for SLList.h... no
> checking for lo_ieee_nan_value... yes
> checking for octave_idx_type... yes
> checking for quit.h... yes
> checking for octave... octave
> checking for OCTAVE_VERSION in Octave... 3.0.1
> checking for octave_config_info('canonical_host_type') in Octave...
> i386-apple-darwin9.4.0
> checking for octave_config_info('SHLEXT') in Octave... dylib
> checking whether ln -s works... yes
> checking for ranlib... ranlib
> checking for strip... strip
> checking for pkg-config... pkg-config
> checking for av_write_frame in -lavformat... no
> error: called from `pkg:configure_make' in file
> /sw/share/octave/3.0.1/m/pkg/pkg.m near line 1232, column 2
> octave:1>
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