diff options
Diffstat (limited to 'cmake/MSVCRuntime.cmake')
| -rw-r--r-- | cmake/MSVCRuntime.cmake | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/cmake/MSVCRuntime.cmake b/cmake/MSVCRuntime.cmake new file mode 100644 index 0000000..f3fb97b --- /dev/null +++ b/cmake/MSVCRuntime.cmake @@ -0,0 +1,47 @@ +if (WIN32) + if (CMAKE_VERSION VERSION_LESS 3.15.0) + message(FATAL_ERROR "windows builds require CMake >= 3.15") + endif() + if(NOT DEFINED CMAKE_MSVC_RUNTIME_LIBRARY) + if (MSVC_RUNTIME STREQUAL "dynamic") + set(MSVC_DEFAULT_RUNTIME "MultiThreadedDLL") + elseif(MSVC_RUNTIME STREQUAL "static") + set(MSVC_DEFAULT_RUNTIME "MultiThreaded") + else() + message(WARNING "invalid MSVC_RUNTIME (deprecated) value '${MSVC_RUNTIME}', ignoring") + endif() + + if(MSVC_DEFAULT_RUNTIME) + message("Using CMAKE_MSVC_RUNTIME_LIBRARY=${MSVC_DEFAULT_RUNTIME} (derived from MSVC_RUNTIME (deprecated) value '${MSVC_RUNTIME}')" ) + else() + set(MSVC_DEFAULT_RUNTIME "MultiThreaded") + + if (CMAKE_BUILD_TYPE STREQUAL "Debug") + string(APPEND MSVC_DEFAULT_RUNTIME "Debug") + endif() + + if (BUILD_SHARED_LIBS) + string(APPEND MSVC_DEFAULT_RUNTIME "DLL") + endif() + message("Using CMAKE_MSVC_RUNTIME_LIBRARY=${MSVC_DEFAULT_RUNTIME}" ) + endif() + + set(CMAKE_MSVC_RUNTIME_LIBRARY ${MSVC_DEFAULT_RUNTIME} CACHE STRING "MSVC runtime") + endif() + + message("build is using MSVC runtime ${CMAKE_MSVC_RUNTIME_LIBRARY}") + + string(FIND ${CMAKE_MSVC_RUNTIME_LIBRARY} "DLL" IS_SHARED) + if(IS_SHARED STREQUAL "-1") + if(BUILD_SHARED_LIBS) + message(FATAL_ERROR "Static CRT is only supported in a fully static build") + endif() + message(STATUS "Use the MSVC static runtime option carefully!") + message(STATUS "OpenSSL uses /MD by default, and is very picky") + message(STATUS "Random freeing errors are a common sign of runtime issues") + endif() + + if(NOT DEFINED CMAKE_SUPPRESS_REGENERATION) + set(CMAKE_SUPPRESS_REGENERATION ON) + endif() +endif() |