Beyond Linux® From Scratch (System V Edition) - Version r11.3-1128

Chapter 31. KDE Frameworks 5 Based Applications

Okular-23.04.1

Introduction to Okular

Okular is a document viewer for KDE. It can view documents of many types including PDF, PostScript, TIFF, Microsoft CHM, DjVu, DVI, XPS and ePub.

[Note]

Note

Development versions of BLFS may not build or run some packages properly if LFS or dependencies have been updated since the most recent stable versions of the books.

Package Information

Okular Dependencies

Required

KDE Frameworks-5.106.0

Recommended

libkexiv2-23.04.1, libtiff-4.5.1, and Poppler-23.07.0 (built with Qt5, required for PDF support)

Optional

qca-2.3.6, discount, DjVuLibre, kpimtextedit, libspectre (for PostScript support), libchm, libepub, and Mobipocket

Installation of Okular

First, it is needed to increase the C++ standard used, because Poppler-23.07.0 requires C++17: 

sed -i s/14/17/ CMakeLists.txt

Install Okular by running the following commands:

[Note]

Note

If any of the optional dependencies are installed, remove the associated reference in the SKIP_OPTIONAL environment variable. 

mkdir build &&
cd    build &&

SKIP_OPTIONAL='LibSpectre;CHM;LibZip;DjVuLibre;EPub;QMobipocket;Discount'

cmake -DCMAKE_INSTALL_PREFIX=$KF5_PREFIX \
      -DCMAKE_BUILD_TYPE=Release         \
      -DBUILD_TESTING=OFF                \
      -DFORCE_NOT_REQUIRED_DEPENDENCIES="$SKIP_OPTIONAL" \
      -Wno-dev .. &&
make

This package does not come with a test suite.

Now, as the root user: 

make install

Contents

Installed Program: okular
Installed Library: libOkular5Core.so
Installed Directories: $KF5_PREFIX/include/okular, $KF5_PREFIX/lib/cmake/Okular5, $KF5_PREFIX/lib/plugins/okular, $KF5_PREFIX/share/kxmlgui5/okular, $KF5_PREFIX/share/okular, $KF5_PREFIX/share/doc/HTML/*/okular, and

Short Descriptions

okular

is a document viewer