libqtgeoservices_maplibregl.so (for Qt 5.15) not usable on Debian 12

[petricf]

Describe the bug
maplibregl shared lib for qt 5.15 ist linked against libicu v56. Debian 12 (Bookworm) delivers libicu v72

To Reproduce
Steps to reproduce the behavior:

1. Copy onto qt tree
2. Exec tool using this plugin
3. set "QT_DEBUG_PLUGIN=1" (to see the details)
4. Does not load qml. Plugin tells libicu56 is missing

Expected behavior
Tool should run

Screenshots
ldd output:

    linux-vdso.so.1 (0x00007ffdcc684000)
    libQt5Location.so.5 => /lib/x86_64-linux-gnu/libQt5Location.so.5 (0x00007fea36200000)
    libQt5PositioningQuick.so.5 => /lib/x86_64-linux-gnu/libQt5PositioningQuick.so.5 (0x00007fea37065000)
    libQt5Quick.so.5 => /lib/x86_64-linux-gnu/libQt5Quick.so.5 (0x00007fea35c00000)
    libQt5Gui.so.5 => /lib/x86_64-linux-gnu/libQt5Gui.so.5 (0x00007fea35400000)
    libQt5QmlModels.so.5 => /lib/x86_64-linux-gnu/libQt5QmlModels.so.5 (0x00007fea36fdc000)
    libQt5Qml.so.5 => /lib/x86_64-linux-gnu/libQt5Qml.so.5 (0x00007fea34e00000)
    libQt5Network.so.5 => /lib/x86_64-linux-gnu/libQt5Network.so.5 (0x00007fea34c56000)
    libQt5Positioning.so.5 => /lib/x86_64-linux-gnu/libQt5Positioning.so.5 (0x00007fea36f4c000)
    libQt5Sql.so.5 => /lib/x86_64-linux-gnu/libQt5Sql.so.5 (0x00007fea36f0a000)
    libQt5Core.so.5 => /lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007fea34600000)
    libGL.so.1 => /lib/x86_64-linux-gnu/libGL.so.1 (0x00007fea36579000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fea36f03000)
    libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fea36ee4000)
    libicui18n.so.56 => not found
    libicuuc.so.56 => not found
    libicudata.so.56 => not found
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fea36edf000)
    libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fea34200000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fea3649a000)
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fea3647a000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fea3441f000)
    /lib64/ld-linux-x86-64.so.2 (0x00007fea370a3000)
    libpng16.so.16 => /lib/x86_64-linux-gnu/libpng16.so.16 (0x00007fea361ca000)
    libharfbuzz.so.0 => /lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007fea35afc000)
    libmd4c.so.0 => /lib/x86_64-linux-gnu/libmd4c.so.0 (0x00007fea36468000)
    libgssapi_krb5.so.2 => /lib/x86_64-linux-gnu/libgssapi_krb5.so.2 (0x00007fea36178000)
    libdouble-conversion.so.3 => /lib/x86_64-linux-gnu/libdouble-conversion.so.3 (0x00007fea36163000)
    libicui18n.so.72 => /lib/x86_64-linux-gnu/libicui18n.so.72 (0x00007fea33e00000)
    libicuuc.so.72 => /lib/x86_64-linux-gnu/libicuuc.so.72 (0x00007fea33c02000)
    libpcre2-16.so.0 => /lib/x86_64-linux-gnu/libpcre2-16.so.0 (0x00007fea35372000)
    libzstd.so.1 => /lib/x86_64-linux-gnu/libzstd.so.1 (0x00007fea352b6000)
    libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007fea33aca000)
    libGLdispatch.so.0 => /lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007fea34b9d000)
    libGLX.so.0 => /lib/x86_64-linux-gnu/libGLX.so.0 (0x00007fea35282000)
    libfreetype.so.6 => /lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007fea34135000)
    libgraphite2.so.3 => /lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007fea35ad0000)
    libkrb5.so.3 => /lib/x86_64-linux-gnu/libkrb5.so.3 (0x00007fea339f0000)
    libk5crypto.so.3 => /lib/x86_64-linux-gnu/libk5crypto.so.3 (0x00007fea34b70000)
    libcom_err.so.2 => /lib/x86_64-linux-gnu/libcom_err.so.2 (0x00007fea3645e000)
    libkrb5support.so.0 => /lib/x86_64-linux-gnu/libkrb5support.so.0 (0x00007fea34b62000)
    libicudata.so.72 => /lib/x86_64-linux-gnu/libicudata.so.72 (0x00007fea31c00000)
    libpcre2-8.so.0 => /lib/x86_64-linux-gnu/libpcre2-8.so.0 (0x00007fea31b66000)
    libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007fea31a24000)
    libbrotlidec.so.1 => /lib/x86_64-linux-gnu/libbrotlidec.so.1 (0x00007fea34b55000)
    libkeyutils.so.1 => /lib/x86_64-linux-gnu/libkeyutils.so.1 (0x00007fea3412e000)
    libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007fea339df000)
    libxcb.so.1 => /lib/x86_64-linux-gnu/libxcb.so.1 (0x00007fea319fa000)
    libbrotlicommon.so.1 => /lib/x86_64-linux-gnu/libbrotlicommon.so.1 (0x00007fea319d7000)
    libXau.so.6 => /lib/x86_64-linux-gnu/libXau.so.6 (0x00007fea3527d000)
    libXdmcp.so.6 => /lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007fea31600000)
    libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007fea319c1000)
    libmd.so.0 => /lib/x86_64-linux-gnu/libmd.so.0 (0x00007fea339d2000)

Platform information (please complete the following information):

• OS: Debian 12
• Qt version 5.15.8 (distributed with debian 12
• Version 2.1.0

Additional context
Output of "apt search libicu":

libicu72/stable,now 72.1-3 amd64  [Installiert,automatisch]
  Internationale Bestandteile für Unicode

[petricf]

Additional info:

Debian 11 uses libicu 67
Debian 10 uses libicu 63

Maybe linking to libicu without version helps ?

Or get bug #33 fixed so that i can compile it myself.

[kebekus]

@petricf I experienced similar problems. My solution is to use the ICU library that is delivered with maplibregl. This is done using the cmake switch MBGL_QT_WITH_INTERNAL_ICU:BOOL=On

My bash-script for compilation is as follows:

# exit when any command fails
set -e

for VARIABLE in android_armv7 android_arm64_v8a android_x86 android_x86_64 gcc_64
do
    rm -rf build-$VARIABLE
    mkdir build-$VARIABLE
    cd build-$VARIABLE
    chmod a+x $Qt6_DIR_BASE/$VARIABLE/bin/qt-configure-module
    chmod a+x $Qt6_DIR_BASE/$VARIABLE/bin/qt-cmake-private
    $Qt6_DIR_BASE/$VARIABLE/bin/qt-configure-module ..
    cmake -DMBGL_QT_WITH_INTERNAL_ICU:BOOL=On .
    ninja
    ninja install
    cd ..    
done

[petricf]

I will try it. My goal is to make *.deb of my applications at the end. This using the debian provided (dev-)packages of Qt and debmaker-tools.

[ntadej]

ICU handling has been improved with #56, so closing this specific ticket.