XPCF-gRPC-gen does not seem to support -isystem

[jim-bcom]

HOW TO REPRODUCE

1. Get project and generate a compilation database that contains -isystem

• 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

The compilation database should be ill-formed as long as the issue b-com-software-basis/builddefs-qmake#13 is not resolved.
To reproduce this bug, you must manually alter the JSON file by replacing -I-isystem/ string by -system/.

2. Get project that uses XPCF-gRPC-gen on the previous project.

• git clone https://github.com/SolarFramework/SolARFrameworkGRPCRemote.git -b develop && cd SolARFrameworkGRPCRemote && git checkout 8ca88680ec599d97d3d4d0c51cd69bb5072689ca
• run generate.sh

EXPECTED BEHAVIOR
Script exits with code 0.

OBSERVED BEHAVIOR

[simple file parser] [info] parsing file '/home/user/dev/SolAR/core/SolARFramework/src/api/reloc/IKeyframeRetriever.cpp'
[preprocessor] [error] In file included from /home/user/dev/SolAR/core/SolARFramework/src/api/reloc/IKeyframeRetriever.cpp: 17:
[preprocessor] [error] In file included from /home/user/dev/SolAR/core/SolARFramework/interfaces/api/reloc/IKeyframeRetriever.h: 20:
[preprocessor] [error] In file included from /home/user/dev/SolAR/core/SolARFramework/interfaces/datastructure/Keyframe.h: 22:
[preprocessor] [critical] /home/user/dev/SolAR/core/SolARFramework/interfaces/datastructure/GeometryDefinitions.h:22: 'xpcf/xpcf.h' file not found

NOTES

• XPCF headers directory is specified by the compilation database as

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

after the manual find'n replace that removes the erroneous -I-isystem/ part.

• If all occurences of -isystem are replaced by -I, the project compiles successfully.

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