Re: [OpenJPEG] Error while loading shared libraries: libopenjp2.so.

[szuk...@arcor.de]

Have you called 'ldconfig' or 'sudo /sbin/ldconfig'?

If your system uses 'lib64': what do you see with

ls -l /usr/local/lib64/libopenjp*

If your system uses 'lib': what do you see with

ls -l /usr/local/lib/libopenjp*

winfried

[Tomáš Dvořák]

Thank you for reply.

Command ldconfig or sudo /sbin/ldconfig without parameters had no effect. I tried as a root the command ldconfig -v and I got the list of libraries. But there wasn't libopenjp2.so.7 or anything similar in the list. Just for a try I put ldconfig -v * in path /usr/local/lib and it returned:

ldconfig: relative path 'libopenjp2.so' used to build cache

After ls -l /usr/local/lib64/libopenjp* there is:
ls: cannot access /usr/local/lib64/libopenjp*: No such file or directory

After ls -l /usr/local/lib/libopenjp* there is:
lrwxrwxrwx. 1 root root 15 Aug 23 12:54 /usr/local/lib/libopenjp2.so -> libopenjp2.so.7
-rwxr-xr-x. 1 root root 357315 Aug 23 12:54 /usr/local/lib/libopenjp2.so.2.1.1
lrwxrwxrwx. 1 root root 19 Aug 23 12:54 /usr/local/lib/libopenjp2.so.7 -> libopenjp2.so.2.1.1

[Tomáš Dvořák]

I found some solution in URL: https://codeyarns.com/2014/01/14/how-to-add-library-directory-to-ldconfig-cache/

I set export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib and the error message of shared libraries dissapeared.

Now when I put command:
 opj_compress -i image.tif -o image.jp2

I get the message:
Unable to load file: got no image

But there is the image.tif in the directory.

[szuk...@arcor.de]

On Wed, 24 Aug 2016 02:06:45 -0700 (PDT), Tomas Dvorak wrote:

>Now when I put command:
> opj_compress -i image.tif -o image.jp2
>
>I get the message:
>Unable to load file: got no image
>
>But there is the image.tif in the directory.

opj_compress.c, line 1782:

/* Can happen if input file is TIFF or PNG
* and OPJ_HAVE_LIBTIF or OPJ_HAVE_LIBPNG is undefined
*/
if( !image) {
fprintf(stderr, "Unable to load file: got no image\n");
return 1;
}

So, I suppose you do not have the TIFF library installed. Or CMAKE
can not find it. cmake-3.5 uses the file:

/usr/share/cmake-3.5/Modules/FindTIFF.cmake


This could be the contents of an opj-cmake.sh:

----------------------------------------
#!/bin/sh
cmake -DBUILD_DOC:bool=on -DBUILD_PKGCONFIG_FILES:bool=on \
-DCMAKE_BUILD_TYPE:string="Release" -DBUILD_VIEWER:bool=off \
-DBUILD_JAVA:bool=off \
-DBUILD_JPIP_SERVER:bool=off -DBUILD_JPIP:bool=off \
-DBUILD_SHARED_LIBS:bool=on -DBUILD_MJ2:bool=on \
-DBUILD_JP3D:bool=on -DBUILD_JPWL:bool=on \
-DBUILD_THIRDPARTY:bool=on ..
---------------------------------------

Copy this shell script to the subdirectory BUILD:

cp opj-cmake.sh openjpeg-2.1.1
cd openjpeg-2.1.1
mkdir BUILD
cd BUILD
cp ../opj-cmake.sh .
./opj-cmake-sh

Then, if the compilation succeeds, try:

bin/opj_compress -i image.tif -o image.jp2

If you have installed the TIFF library, you can add in opj-cmake.sh:

-DTIFF_INCLUDE_DIR:path="path/to/include/"

where the files

tiff.h tiffconf.h tiffio.h tiffio.hxx tiffvers.h

are installed. And do not forget to change '-DBUILD_THIRDPARTY:bool=on'
to '-DBUILD_THIRDPARTY:bool=off'.

winfried

[Tomáš Dvořák]

Hello Winfried, you are right.

The TIFF library were not installed. After installation and repeated compilation with your script the program works.

Thank you once more for your help!