[SOLVED] Slackware-current MPlayer libmng

_gin · 08-16-2015, 11:22 PM

Hi there!

On my Slack-box (Slackware-current) MPlayer (MPlayer-20150425) does not detect MNG (Checking for MNG support ... no), does this occur to you as well...and if so, does anyone have a fix for It?

REM: I believe that mng is the libmng library.

Drakeo · 08-17-2015, 12:53 AM

Quote:

MNG (Multiple-image Network Graphics) libPNG

clean up your libpng install uninstall libpng14 if it is still there and libpng16 also then install the latest updated build from current Pat updated that a while back then cleaned up the old libpng at the same time. then reinstall mplayer. that should do it.
mine.

Quote:

MPlayer 20150425-4.9.2

also read the change log notes http://www.slackware.com/changelog/c...php?cpu=x86_64

_gin · 08-18-2015, 03:37 AM

The answer came from BLFS

, according to this page, libmng-2.0.2 does not link properly with libjpeg-turbo. You have to add a missing header file. BLFS does this with a sed command.

This is why MPlayer in current does not detect libmng and if you add "--enable-mng" to force MPlayer to link with, the build fails like this:

Code:

In file included from /usr/include/libmng_types.h:207:0,
                 from /usr/include/libmng.h:386,
                 from libvo/vo_mng.c:38:
/usr/include/jpeglib.h:914:53: error: unknown type name 'FILE'
 EXTERN(void) jpeg_stdio_dest (j_compress_ptr cinfo, FILE * outfile);
                                                     ^
/usr/include/jpeglib.h:915:54: error: unknown type name 'FILE'
 EXTERN(void) jpeg_stdio_src (j_decompress_ptr cinfo, FILE * infile);
                                                      ^
make: *** [libvo/vo_mng.o] Erreur 1

I requested help because I was not sure that the problem came from me or from Slackware-current. I usually install MPlayer that I link to ffmpeg as a shared library and my current ffmpeg install includes quite a few of external libraries as well.

The problem will solve by Itself when libmng will be upgraded to libmng-2.0.3, I guess...

Case solved, thanks everyone for reading.