[FFmpeg-user] Building FFmpeg with OpenJPEG 2.0

[Aaron Boxer]

I spoke too soon: compile is working, but linking fails. I guess I need
that check in the configure file after all....



On Wed, Mar 23, 2016 at 10:40 AM, Aaron Boxer <boxerab at gmail.com> wrote:

> OK, figured this one out. Thanks to everyone who helped.
>
> Here is what I had to do:
>
> 1. Install latest OpenJPEG from source (version 2.1)
> 2. remove check for openjpeg library from configure script
> 3. $ ./configure --enable-libopenjpeg
> --extra_cflags="-DHAVE_OPEN_OPENJPEG_2_1_OPENJPEG_H"
> 4. manually edit config.h and change
> #define HAVE_OPEN_OPENJPEG_2_1_OPENJPEG_H 0
> to
> HAVE_OPEN_OPENJPEG_2_1_OPENJPEG_H 1
> 5. make
>
> Perhaps someone who understands FFmpeg configuration can advise on how to
> improve this.
>
> Cheers,
> Aaron
>
>
> On Wed, Mar 23, 2016 at 10:05 AM, Paul B Mahol <onemda at gmail.com> wrote:
>
>> On 3/23/16, Aaron Boxer <boxerab at gmail.com> wrote:
>> > On Wed, Mar 23, 2016 at 9:31 AM, Reindl Harald <h.reindl at thelounge.net>
>> > wrote:
>> >
>> >>
>> >> Am 23.03.2016 um 14:22 schrieb Aaron Boxer:
>> >>
>> >>> On Tue, Mar 22, 2016 at 4:52 PM, Reindl Harald <
>> h.reindl at thelounge.net>
>> >>>
>> >>>> *where* doe soyur build install stuff?
>> >>>>
>> >>>> nothing renames anything - path orders are relevant
>> >>>> in doubt *tell* ffmpeg where it has to seek!
>> >>>>
>> >>>> --extra-ldflags may be your friend
>> >>>>
>> >>>
>> >>> I install OpenJPEG library into /usr/local/lib
>> >>> and header into /usr/local/include
>> >>>
>> >>> Unfortunately, it doesn't look like FFmpeg is finding them
>> >>>
>> >>
>> >> did you tell it to look there?
>> >> what was unclear in "--extra-ldflags may be your friend"?
>> >>
>> >> *how* does you full configure-line looks like?
>> >>
>> >> i really don't understand why you are not posting full informations
>> what
>> >> is installed where and your configure line from the very first start -
>> >> http://www.catb.org/esr/faqs/smart-questions.html#beprecise
>> >
>> >
>> > Thanks for your help.
>> >
>> > I just assumed /usr/local/lib was a standard place to look for
>> libraries.
>> >
>> > Anyways, when I install OpenJPEG,  include goes in /usr/local/include
>> and
>> > lib goes in /usr/local/lib
>> >
>> > My configure command is:
>> >
>> >
>> > $ ./configure --enable-libopenjpeg --extra-cflags="-I/usr/local/include"
>> > --extra-ldflags="-L/usr/local/lib"
>> >
>> > and the results is
>> >
>> > ERROR: libopenjpeg not found
>>
>> There is config.log somewhere I guess?
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>
>