Re: [Mjpeg-users] lavplay does not work

[Bernhard P. <sha...@ut...>]

Hallo

Janos G. Komaromi wrote:
> Trying answering directly to mailing list:
It did work.

>> I'm not sure about the older mjpegtools version's. It should check for
>> libjpeg, and you should see a similar output when you run configure:
>> checking for jpeg_start_compress in -ljpeg... yes
>>
>> When it does not find the libjpeg, you usually need to install the
>> header or devel rpm and it should find the libjpeg than.
>>
>> If you know that you have the libjpeg and the developer package
>> installed, and configure does not find it, you might "tune" the
>> configure script.
>>
>> So please post the output of configure.
>>
>> when you run configure you should see: the final lines something like:
>> configure:   - software MJPEG playback       : true
> I did have both the rpm and the developer rpm installed. So I ran
> ./configure again, and the salient parts of the output are:
> (1) checking for jpeg_start_compress in -ljpeg BUT it does not give yes
> (see complete postiong of configure.log
> (2) and software MJPEG playback IS false
> So thank you for the good insight. Now can you help me with "tuning" the
> configure script?
You can change the check in the configure script:
if test "x$ac_cv_lib_jpeg_jpeg_start_compress" = xyes; then :
    JPEG_LIBS="-ljpeg"
               JPEG_CFLAGS=""
             have_libjpeg=true
fi
---ENDE---
by commenting out the if part, so it will always think that it has the 
correct options.  But that would be the last thing to try.

> Output of the configure log follows (rather long...)
> ==========xxxxxxxxxxxx===========
> This file contains any messages produced by compilers while
> running configure, to aid debugging if configure makes a mistake.
>
> It was created by mjpegtools configure 1.9.0, which was
> generated by GNU Autoconf 2.61.  Invocation command line was
>
>    $ ./configure
[....]
> configure:23344: result: yes
> configure:23356: checking for jpeg_start_compress in -ljpeg
> configure:23391: gcc -o conftest -g -O2 -pthread   conftest.c -ljpeg
> -lm  >&5
[...]
> ac_cv_lib_jpeg_jpeg_start_compress=yes
[...]
> JPEG_CFLAGS=''
> JPEG_LIBS='-ljpeg'
[...]

When I sees the output. I would guess that the libjpeg is found and 
seems to be available.

Have you tried running a "make distclean" ? An run configure afterwards.
I remember that there can be cache files, that can cause problems. Did 
you try downloading the latest (or newer) mjpeg-tools tar.gz package 
unpacking it to a folder and try t compile it ?

auf hoffentlich bald,

Berni the Chaos of Woodquarter

Email: sha...@ut...
www: http://www.lysator.liu.se/~gz/bernhard