@Franz,

Sorry for delay, but have you gone through this article for installing Kodi on Fedora 23.

http://kodi.wiki/view/HOW-TO:Install_Kodi_on_Fedora_23_using_RPMFusion_packages

so I decided to ignore that step and continue. Everything worked fine until I tried:
cmake .. -DCMAKE_INSTALL_PREFIX=`kde4-config –prefix`
I got this:
— The CXX compiler identification is unknown
CMake Error at CMakeList.txt:l (project):
No CMAKE_CXX_COMPILER could be found

here’s the content of the files CMakeError.log and CMakeOutput.log

CMakeOutput.log——————————————
The system is: Linux – 4.2.3-300.fc23.i686 – i686
Compiling the C compiler identification source file “CMakeCCompilerId.c” succeeded.
Compiler: /usr/bin/cc
Build flags:
Id flags:

The output was:
0

Compilation of the C compiler identification source “CMakeCCompilerId.c” produced “a.out”

The C compiler identification is GNU, found in “/home/Franz/plasma-mediacenter/build/CMakeFiles/3.4.1/CompilerIdC/a.out”

Determining if the C compiler works passed with the following output:
Change Dir: /home/Franz/plasma-mediacenter/build/CMakeFiles/CMakeTmp

Run Build Command:”/usr/bin/gmake” “cmTC_025bc/fast”
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Building C object CMakeFiles/cmTC_025bc.dir/testCCompiler.c.o
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gmake[1]: Leaving directory ‘/home/Franz/plasma-mediacenter/build/CMakeFiles/CMakeTmp’

Detecting C compiler ABI info compiled with the following output:
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Run Build Command:”/usr/bin/gmake” “cmTC_ebc7e/fast”
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as-needed -lgcc_s –no-as-needed -lc -lgcc –as-needed -lgcc_s –no-as-needed /usr/lib/gcc/i686-redhat-linux/5.3.1/crtend.o /usr/lib/gcc/i686-

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gmake[1]: Leaving directory ‘/home/Franz/plasma-mediacenter/build/CMakeFiles/CMakeTmp’

Parsed C implicit link information from above output:
link line regex: [^( *|.*[/\])(ld|([^/\]+-)?ld|collect2)[^/\]*( |$)]
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Detecting C [-std=c11] compiler features compiled with the following output:
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Run Build Command:”/usr/bin/gmake” “cmTC_71a4d/fast”
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gmake[1]: Leaving directory ‘/home/Franz/plasma-mediacenter/build/CMakeFiles/CMakeTmp’

Feature record: C_FEATURE:1c_function_prototypes
Feature record: C_FEATURE:1c_restrict
Feature record: C_FEATURE:0c_static_assert
Feature record: C_FEATURE:1c_variadic_macros

Detecting C [-std=c90] compiler features compiled with the following output:
Change Dir: /home/Franz/plasma-mediacenter/build/CMakeFiles/CMakeTmp

Run Build Command:”/usr/bin/gmake” “cmTC_cc951/fast”
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Building C object CMakeFiles/cmTC_cc951.dir/feature_tests.c.o
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gmake[1]: Leaving directory ‘/home/Franz/plasma-mediacenter/build/CMakeFiles/CMakeTmp’

Feature record: C_FEATURE:1c_function_prototypes
Feature record: C_FEATURE:0c_restrict
Feature record: C_FEATURE:0c_static_assert
Feature record: C_FEATURE:0c_variadic_macros

Is there any error messages you getting on the screen?