Error compiling on kde neon 22.04

[Blad3forc3]

-- The C compiler identification is GNU 9.5.0
-- The CXX compiler identification is GNU 9.5.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of size_t
-- Check size of size_t - done
-- Check size of unsigned int
-- Check size of unsigned int - done
-- Check size of unsigned long
-- Check size of unsigned long - done
-- Check size of unsigned long long
-- Check size of unsigned long long - done
-- Found ALSA: /usr/lib/x86_64-linux-gnu/libasound.so (found version "1.2.6.1")
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.2")
-- Checking for module 'libudev'
-- Found libudev, version 249
-- Found X11: /usr/local/include
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Found OpenGL: /usr/lib/x86_64-linux-gnu/libOpenGL.so
-- Found Qt: 5.15.7
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Checking for modules 'libavformat;libavcodec;libswresample;libswscale;libavutil'
-- Found libavformat, version 58.76.100
-- Found libavcodec, version 58.134.100
-- Found libswresample, version 3.9.100
-- Found libswscale, version 5.9.100
-- Found libavutil, version 56.70.100
-- Configuring done
CMake Error at src/CMakeLists.txt:602 (add_executable):
Target "punes" links to target "Qt5::Gui," but the target was not found.
Perhaps a find_package() call is missing for an IMPORTED target, or an
ALIAS target is missing?

-- Generating done
CMake Generate step failed. Build files cannot be regenerated correctly.

[punesemu]

-- Found Qt: 5.15.7

on line 651 of the src/CMakeList.txt there is this condition:

$<IF:$<VERSION_LESS:${QT_VERSION},5.15.0>,
	Qt5::Core
	Qt5::Network
	Qt5::Widgets
	Qt5::Svg
	Qt5::Gui
	,
	Qt::Core
	Qt::Network
	Qt::Widgets
	Qt::Svg
	Qt::Gui
	$<IF:$<VERSION_GREATER_EQUAL:${QT_VERSION},6.0.0>,Qt::OpenGLWidgets,>
>

your log tells me that cmake tries to use Qt5::Gui despite the version of QT you use is greater than 5.15.0, it should use Qt::Gui instead. Really weird, I haven't encountered this problem on any distribution I've tried. I will try to install your distribution in a virtual machine to see if I can reproduce the problem.

[punesemu]

Try with last commit.

[Blad3forc3]

Yes it now compiles correctly. Thanks

[winterheart]

Since 5.15 Qt moved libraries targets to more generic Qt:: namespace which ease to Qt6 transition. When I worked on CMake buildsystem, I capped minimal version as 5.15.0 for this reason.

[punesemu]

First of all, thanks again for your work, I will never stop thanking you.

Since 5.15 Qt moved libraries targets to more generic Qt:: namespace which ease to Qt6 transition. When I worked on CMake buildsystem, I capped minimal version as 5.15.0 for this reason.

I had guessed this could be the reason but I needed to keep the possibility of being able to compile even with QTs prior to 5.15.0.