if("x${CMAKE_GENERATOR_INSTANCE}" STREQUAL "x") | |
message(FATAL_ERROR "CMAKE_GENERATOR_INSTANCE is empty but should have a value.") | |
elseif("x${CMAKE_GENERATOR_INSTANCE}" MATCHES [[\\]]) | |
message(FATAL_ERROR | |
"CMAKE_GENERATOR_INSTANCE is\n" | |
" ${CMAKE_GENERATOR_INSTANCE}\n" | |
"which contains a backslash.") | |
elseif(NOT IS_DIRECTORY "${CMAKE_GENERATOR_INSTANCE}") | |
message(FATAL_ERROR | |
"CMAKE_GENERATOR_INSTANCE is\n" | |
" ${CMAKE_GENERATOR_INSTANCE}\n" | |
"which is not an existing directory.") | |
endif() |