Ill-formed compilation database generated by QtCreator when -isystem is used

[jim-bcom]

HOW TO REPRODUCE

• git clone https://github.com/SolarFramework/SolARFramework.git -b develop && cd SolARFramework && git checkout be919630e0b6d1192f4278707bdf78453a4ec48e
• Open QtCreator and open SolARFramework.pro
• Go to projects tab, and select run for qmake_system()
• Build project and then generate compilation database: Build -> Run Generator -> Generate Compilation Database
• The location of the generated compilation database should be indicated in the Genera Messages window. This should be something like ../build-SolARFramework-Desktop_Qt_6_5_3_GCC_64bit-Release/compile_commands.json

EXPECTED BEHAVIOR
In the arguments array of the generated JSON file, include directory for xpcf should be:

-isystem/home/jmhenaff/.remaken/packages/linux-gcc/xpcf/2.7.0/interfaces

As XPCF is a third party library.

OBSERVED BEHAVIOR
Path to include dir is ill-formed:

-I-isystem/home/jmhenaff/.remaken/packages/linux-gcc/xpcf/2.7.0/interfaces

OS: Linux Ubuntu 22.04
XPCF: 2.7.0 (static)
remaken: 1.10.0
Qt Creator: 11.0.2
Qt: 6.4.3

[stefled]

The QtCreator Compilation Database generation commands does not handle the different compilation flags well as long as there are –isystem.
It's an external issue.