# macOS paths usually start with /Users/*. Unfortunately, clang-cl interprets # paths starting with /U as macro undefines, so we need to put a -- before the # input file path to force it to be treated as a path. CMake's compilation rules # should be tweaked accordingly, but until that's done, and to support older # CMake versions, overriding compilation rules works well enough. This file will # be included by cmake after the default compilation rules have already been set # up, so we can just modify them instead of duplicating them entirely. string(REPLACE "-c " "-c -- " CMAKE_C_COMPILE_OBJECT "${CMAKE_C_COMPILE_OBJECT}") string(REPLACE "-c " "-c -- " CMAKE_CXX_COMPILE_OBJECT "${CMAKE_CXX_COMPILE_OBJECT}")