qt-alternate-5.15.11

Installation of qt5

Warning

If qt5 is being reinstalled into the same directory as an existing instance, run the commands done by root, such as make install, from a console or non-qt5 based window manager. It overwrites qt5 libraries that should not be in use during the install process.

Caution

If you did not install some of the recommended dependencies, examine ./configure --help output to check how to disable them or use internal versions bundled in the source tarball.

Note

The BLFS editors do not recommend installing qt5 into the /usr hierarchy because it becomes difficult to find components and to update to a new version. If you do want to install qt5 in /usr, the directories need to be specified explicitly. In this case, set QT5PREFIX=/usr and add the following to the configure arguments below:

            -archdatadir    /usr/lib/qt5                \
            -bindir         /usr/bin                    \
            -plugindir      /usr/lib/qt5/plugins        \
            -importdir      /usr/lib/qt5/imports        \
            -headerdir      /usr/include/qt5            \
            -datadir        /usr/share/qt5              \
            -docdir         /usr/share/doc/qt5          \
            -translationdir /usr/share/qt5/translations \
            -examplesdir    /usr/share/doc/qt5/examples

The libxkbcommon-1.6.0 package removes some definitions that are not used. Remove those here also:

sed -i '276,279d' qtbase/src/platformsupport/input/xkbcommon/qxkbcommon.cpp

Now apply a patch to pull in the fixes curated by kde for those modules which are required by packages mentioned in this book:

patch -Np1 -i ../qt-everywhere-opensource-src-5.15.11-kf5-1.patch

The patch is supposed to be used in a git repository. Otherwise some files that should be modified by configure after applying the patch are not touched. Fortunately, it is enough to create a .git directory in the qmake directory where the configure script is run:

mkdir -pv qtbase/.git

At this point we want to set up skipping most components. Do that with:

ls -Fd qt* | grep / | sed 's/^/-skip /;s@/@@' > tempconf &&
sed -i -r '/base|tools|x11extras|svg|declarative|wayland/d' tempconf

Now, install qt5 by running the following commands:

./configure -prefix $QT5PREFIX   \
            -sysconfdir /etc/xdg \
            -confirm-license     \
            -opensource          \
            -dbus-linked         \
            -openssl-linked      \
            -system-harfbuzz     \
            -system-sqlite       \
            -nomake examples     \
            -no-rpath            \
            -journald            \
            $(cat tempconf)      \
            &&
make

This package does not come with a test suite.

Now, as the root user:

make install

Remove references to the build directory from installed library dependency (prl) files by running the following command as the root user:

find $QT5PREFIX/ -name \*.prl \
   -exec sed -i -e '/^QMAKE_PRL_BUILD_DIR/d' {} \;

Install images and create the menu entries for installed applications. The QT5BINDIR variable is used here to point to the directory for the executable programs. If you have changed the bindir above, QT5BINDIR will need to be adjusted below. Be sure that the QT5BINDIR variable is defined in root's environment and as the root user:

QT5BINDIR=$QT5PREFIX/bin

install -v -dm755 /usr/share/pixmaps/                  &&

install -v -Dm644 qttools/src/assistant/assistant/images/assistant-128.png \
                  /usr/share/pixmaps/assistant-qt5.png &&

install -v -Dm644 qttools/src/designer/src/designer/images/designer.png \
                  /usr/share/pixmaps/designer-qt5.png  &&

install -v -Dm644 qttools/src/linguist/linguist/images/icons/linguist-128-32.png \
                  /usr/share/pixmaps/linguist-qt5.png  &&

install -v -Dm644 qttools/src/qdbus/qdbusviewer/images/qdbusviewer-128.png \
                  /usr/share/pixmaps/qdbusviewer-qt5.png &&

install -dm755 /usr/share/applications &&

cat > /usr/share/applications/assistant-qt5.desktop << EOF
[Desktop Entry]
Name=Qt5 Assistant
Comment=Shows Qt5 documentation and examples
Exec=$QT5BINDIR/assistant
Icon=assistant-qt5.png
Terminal=false
Encoding=UTF-8
Type=Application
Categories=Qt;Development;Documentation;
EOF

cat > /usr/share/applications/designer-qt5.desktop << EOF
[Desktop Entry]
Name=Qt5 Designer
GenericName=Interface Designer
Comment=Design GUIs for Qt5 applications
Exec=$QT5BINDIR/designer
Icon=designer-qt5.png
MimeType=application/x-designer;
Terminal=false
Encoding=UTF-8
Type=Application
Categories=Qt;Development;
EOF

cat > /usr/share/applications/linguist-qt5.desktop << EOF
[Desktop Entry]
Name=Qt5 Linguist
Comment=Add translations to Qt5 applications
Exec=$QT5BINDIR/linguist
Icon=linguist-qt5.png
MimeType=text/vnd.trolltech.linguist;application/x-linguist;
Terminal=false
Encoding=UTF-8
Type=Application
Categories=Qt;Development;
EOF

cat > /usr/share/applications/qdbusviewer-qt5.desktop << EOF
[Desktop Entry]
Name=Qt5 QDbusViewer
GenericName=D-Bus Debugger
Comment=Debug D-Bus applications
Exec=$QT5BINDIR/qdbusviewer
Icon=qdbusviewer-qt5.png
Terminal=false
Encoding=UTF-8
Type=Application
Categories=Qt;Development;Debugger;
EOF

Some packages such as VLC-3.0.20 look for certain executables with a -qt5 suffix. Run the following command as the root user to create the necessary symlinks:

for file in moc uic rcc qmake lconvert lrelease lupdate; do
  ln -sfvn $QT5BINDIR/$file /usr/bin/$file-qt5
done