Respect `CMAKE_<LANG>_COMPILER_ARG1` in `CMAKE_<LANG>_COMPILER_PREDEFINES_COMMAND` (!2316) · Merge requests · CMake / CMake

Sebastian Holtermann requested to merge sebholt/cmake:cmake_lang_compiler_predefines into master Aug 27, 2018

AUTOMOC used to fail to generate moc_predefs.h when ccache was used as a compiler starter by e.g. configuring a project with the environment variable CXX="ccache g++". The reason was that CMAKE_<LANG>_COMPILER_ARG1 wasn't respected in the definition of CMAKE_<LANG>_COMPILER_PREDEFINES_COMMAND for various compilers. This is fixed by this patch.

Fixes #17275 (closed).

Respect `CMAKE_<LANG>_COMPILER_ARG1` in `CMAKE_<LANG>_COMPILER_PREDEFINES_COMMAND`

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