D18996: Fix building with namespaced Qt

[Christophe Giboudeaux]

cgiboudeaux added inline comments.

INLINE COMMENTS

> CMakeLists.txt:68
>  set_property(TARGET SyntaxHighlightingData PROPERTY POSITION_INDEPENDENT_CODE 1)
> +target_link_libraries(SyntaxHighlightingData PRIVATE Qt5::Core)

This is causing a build issue (at least) with CMake 3.10:

> CMake Error at data/CMakeLists.txt:68 (target_link_libraries):
> 
>   Object library target "SyntaxHighlightingData" may not link to anything.

OBJECT targets must not link to anything [1]

>   An object library compiles source files but does not archive or link their object files into a library.

The CMake doc < 3.11 also mentions "Object libraries cannot be linked."

[1] https://cmake.org/cmake/help/v3.14/command/add_library.html#object-libraries

REPOSITORY
  R216 Syntax Highlighting

REVISION DETAIL
  https://phabricator.kde.org/D18996

To: davschul, vkrause
Cc: cgiboudeaux, cullmann, kwrite-devel, kde-frameworks-devel, bmortimer, domson, michaelh, genethomas, ngraham, bruns, demsking, vkrause, sars, dhaumann
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