CGAL users discussion list

[Sebastien Loriot <>]

You need to have in your cmake script:

find_package(CGAL REQUIRED OPTIONAL_COMPONENTS Qt5)

if(CGAL_Qt5_FOUND)
  #define your exe my_target
  target_link_libraries(my_target PUBLIC CGAL::CGAL_Qt5)
endif()


Sebastien.


On 2/3/21 10:52 AM, Ben Laurie wrote:
> On Wed, 3 Feb 2021 at 08:26, Sebastien Loriot < 
> <>> wrote:
>
>     You should not give include paths by hand but use the cmake config file
>     generated by your QT installation.
>
>     See
>     https://doc.cgal.org/latest/Manual/configurationvariables.html#title9 
> <https://doc.cgal.org/latest/Manual/configurationvariables.html#title9>
>
>     Qt5_DIR can be a cmake variable (cmake -DQt5_DIR=...) or an environment
>     variable.
>
>
> If I do this I get this warning from cmake:
>
> CMake Warning:
>    Manually-specified variables were not used by the project:
>
>      Qt5_DIR
>
> The previous suggestion (i.e. using CMakeLists.txt from the examples) 
> works as well as the manual configuration I posted in the first place - 
> that is, I end up with:
>
> /usr/local/include/CGAL/Qt/image_interface.h:21:10: fatal error:
>        'ui_ImageInterface.h' file not found
> #include "ui_ImageInterface.h"
>
>
>     Sebastien.
>
>     On 1/30/21 5:30 PM, Ben Laurie wrote:
>      > I'm trying to compile the basic example
>      >
>     
> (https://doc.cgal.org/latest/Manual/devman_create_and_use_a_cmakelist.html#subcmake
>     
> <https://doc.cgal.org/latest/Manual/devman_create_and_use_a_cmakelist.html#subcmake>
>
>      >
>     
> <https://doc.cgal.org/latest/Manual/devman_create_and_use_a_cmakelist.html#subcmake
>     
> <https://doc.cgal.org/latest/Manual/devman_create_and_use_a_cmakelist.html#subcmake>>)
>
>      > and I have to pass lots of arguments to CMake to include the qt5
>     files
>      > ... like this:
>      >
>      > cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS="-Wall -Werror
>      > -I/usr/local/include/qt5 -I/usr/local/include/qt5/QtWidgets
>      > -I/usr/local/include/qt5/QtGui -I/usr/local/include/qt5/QtXml
>      > -I/usr/local/include/qt5/QtCore -I/usr/local/include/qt5/QtOpenGL
>     -fPIC" .
>      >
>      > Is this expected? Anyway, after tracking all these down, I end up
>     with
>      > the error:
>      >
>      > /usr/local/include/CGAL/Qt/image_interface.h:21:10: fatal error:
>      >        'ui_ImageInterface.h' file not found
>      >
>      > and there's no such file on my machine. Any clue what I'm doing
>     wrong?
>      >
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