What guide exactly? What is its URL? What section are you reading exactly? https://github.com/qgis/QGIS/blob/master/INSTALL.md#3-building-on-gnulinux ? Did you follow each step exactly and did you do nothing else in between?

> Did I do anythng wrongly ?

Yes, you followed the instructions of a dumb machine that makes up things without any logic or reasoning.

If you are following instructions by an algorithm that hallucinates false facts (like ChatGPT), then please state so before asking humans to clean up the mess...

Sorry for the angry and negative tone but it is a *colossal waste of time* if one assumes to help a human but it is really a human who follows commonly false and misguided instructions by a dumb machine.

On 29.11.23 12:47, Raivo Rebane wrote:

Hi,'

I use ubuntu 20.04 and guide from QGIS package and from ChatGPT

Did I do anythng wrongly ?

Raivo

On 29.11.23 13:39, Johannes Kröger (WhereGroup) wrote:

What guide are you following and what OS (+version) are you using?

On 29.11.23 12:24, Raivo Rebane via QGIS-User wrote:

I have installed following :

 2064  sudo apt-get install libspatialite-dev
 2087  sudo apt install libqt5serialport5-dev

but same error ocured

Regards,
Raivo

On 29.11.23 13:14, Werner Macho wrote:
And regarding spatialite ..
take a look if the -dev package of spatialite is installed ..
If you want to compile yourself you always need the -dev packages
regards
Werner

On Wed, Nov 29, 2023 at 12:10 PM Werner Macho <[email protected]> wrote:

    Hi!
    According to the error message you provided you are missing:
    Could not find a package configuration file provided by
    "Qt5SerialPort"
       with any of the following names:

    Try to install the package "libqt5serialport5-dev" (depending
    on which distribution you are - I can only see it is a linux
    system)

    regards
    Werner

    On Wed, Nov 29, 2023 at 12:05 PM Raivo Rebane via QGIS-User
    <[email protected]> wrote:

        Hi,

        I want to install QGIS package from source, but got
        foolowing errors :

        CMake Error at cmake/FindSpatiaLite.cmake:20 (add_library):
           add_library cannot create ALIAS target
        "spatialite::spatialite" because
           target "PkgConfig::PC_SPATIALITE" is imported but not
        globally visible.
        Call Stack (most recent call first):
           CMakeLists.txt:405 (find_package)


        -- Qt WebKit support enabled
        -- Using embedded laz-perf
        -- Found ZSTD: /usr/lib/x86_64-linux-gnu/libzstd.so
        -- Found PDAL: pdal_base;pdal_util (2.2.0)
        -- Found Draco: /usr/local/lib/libdraco.a (1.5.6)
        CMake Error at
        /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5Config.cmake:28
        (find_package):
           Could not find a package configuration file provided by
        "Qt5SerialPort"
           with any of the following names:

             Qt5SerialPortConfig.cmake
             qt5serialport-config.cmake

           Add the installation prefix of "Qt5SerialPort" to
        CMAKE_PREFIX_PATH
        or set
           "Qt5SerialPort_DIR" to a directory containing one of the
        above files.  If
           "Qt5SerialPort" provides a separate development package
        or SDK, be
        sure it
           has been installed.

        I tried different way of cmake :

        raivo@Hydra:~/QGIS/build-master$ cmake
        -DSPATIALITE_LIBRARY=/usr/lib/x86_64-linux-gnu/libspatialite.so

        -DSPATIALITE_INCLUDE_DIR=/usr/include/ ..
        and

        raivo@Hydra:~/QGIS/build-master$ cmake
        -DSPATIALITE_LIBRARY=/usr/lib/x86_64-linux-gnu/libspatialite.so

        -DSPATIALITE_INCLUDE_DIR=/usr/include/
        -DPC_SPATIALITE=/usr/lib/x86_64-linux-gnu/pkgconfig/spatialite.pc
        ..

        but in any cases got previous errors.

        What is wrong ?

        Regards,

        Raivo


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