libigl/cmake/LibiglWindows.cmake

if(MSVC)
	option(IGL_STATIC_RUNTIME "Use libigl with the static MSVC runtime." OFF)
	if(IGL_STATIC_RUNTIME)
		message(STATUS "MSVC -> forcing use of statically-linked runtime.")
		foreach(config ${CMAKE_CONFIGURATION_TYPES})
			string(TOUPPER ${config} config)
			string(REPLACE /MD /MT CMAKE_C_FLAGS_${config} "${CMAKE_C_FLAGS_${config}}")
			string(REPLACE /MD /MT CMAKE_CXX_FLAGS_${config} "${CMAKE_CXX_FLAGS_${config}}")
		endforeach()
		string(REPLACE "/MDd" "/MTd" CMAKE_CXX_FLAGS_DEBUG ${CMAKE_CXX_FLAGS_DEBUG})
	else()
		message(STATUS "MSVC -> forcing use of dynamically-linked runtime.")
		foreach(config ${CMAKE_CONFIGURATION_TYPES})
			string(TOUPPER ${config} config)
			string(REPLACE /MT /MD CMAKE_C_FLAGS_${config} "${CMAKE_C_FLAGS_${config}}")
			string(REPLACE /MT /MD CMAKE_CXX_FLAGS_${config} "${CMAKE_CXX_FLAGS_${config}}")
		endforeach()
		string(REPLACE "/MTd" "/MDd" CMAKE_CXX_FLAGS_DEBUG ${CMAKE_CXX_FLAGS_DEBUG})
	endif()

	# https://github.com/mozilla/sccache/issues/242
	if(CMAKE_CXX_COMPILER_LAUNCHER STREQUAL "sccache")
		string(REGEX REPLACE "/Z[iI7]" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
		set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /Z7")
	endif()
endif()