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Building Qt v5 for Linux

In order to maintain maximum compatibility with the binaries contained in the Qt on-line installers (particularly the libc and libstdc++ ABI versions) the build should be done on CentOS 7 with devtoolset-4 (gcc v5.3.1, libc ABI v2.17, libstdc++ ABI v6.0.19).

Patching the Sources

From the top-level directory of the Qt sources run:

sh /path/to/Qt5-builder/apply_patches.sh

Configuration and Prerequisites

To install additional prerequisites, run:

sudo yum -y install patch
sudo yum -y install which
sudo yum -y install p7zip
sudo yum -y install bison
sudo yum -y install flex
sudo yum -y install gperf
sudo yum -y install nodejs
sudo yum -y install alsa-lib-devel
sudo yum -y install bluez-libs-devel
sudo yum -y install cups-devel
sudo yum -y install dbus-devel
sudo yum -y install fontconfig-devel
sudo yum -y install gstreamer1-devel
sudo yum -y install gstreamer1-plugins-base-devel
sudo yum -y install libwayland-client-devel
sudo yum -y install libXcomposite-devel
sudo yum -y install libXcursor-devel
sudo yum -y install libXi-devel
sudo yum -y install libxkbcommon-x11-devel
sudo yum -y install libxkbfile-devel
sudo yum -y install libXrandr-devel
sudo yum -y install libXtst-devel
sudo yum -y install mesa-libEGL-devel
sudo yum -y install nss-devel
sudo yum -y install postgresql-devel
sudo yum -y install pulseaudio-libs-devel
sudo yum -y install speech-dispatcher-devel
sudo yum -y install unixODBC-devel
sudo yum -y install xcb-util-devel
sudo yum -y install xcb-util-image-devel
sudo yum -y install xcb-util-keysyms-devel
sudo yum -y install xcb-util-renderutil-devel
sudo yum -y install xcb-util-wm-devel

To install ICU, run:

mkdir $HOME/icu
cd $HOME/icu
7za x /path/to/Qt5-builder/icu/icu-linux-g++-Rhel7.2-x64-devel.7z

Building

To configure the Qt sources, run:

./configure \
    -prefix /path/to/target/installation/gcc_64 \
    -opensource \
    -confirm-license \
    -release \
    -no-strip \
    -skip virtualkeyboard \
    -no-sql-mysql \
    -nomake examples \
    -nomake tests \
    -xcb \
    -xcb-xlib \
    -bundled-xcb-xinput \
    -qt-harfbuzz \
    -qt-libjpeg \
    -qt-libpng \
    -no-mng \
    -I /usr/include/openssl11 \
    -L /usr/lib64/openssl11 \
    -I $HOME/icu/include \
    -L $HOME/icu/lib

To build and install Qt, run:

LD_LIBRARY_PATH=$HOME/icu/lib make
make install

To install the ICU libraries, run:

cd /path/to/target/installation/gcc_64/lib
7za x /path/to/Qt-builder/icu/icu-linux-g++-Rhel7.2-x64.7z

To fix the rpaths, run:

cd /path/to/target/installation/gcc_64/lib
patchelf --set-rpath '$ORIGIN' libicui18n.so
patchelf --set-rpath '$ORIGIN' libicuuc.so
patchelf --set-rpath '$ORIGIN' libQt5Core.so