diff --git a/CMakeLists.txt b/CMakeLists.txt index 5ae4c0ab..42a2121e 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -93,6 +93,17 @@ option(SPDLOG_FMT_EXTERNAL "Use external fmt library instead of bundled" OFF) option(SPDLOG_FMT_EXTERNAL_HO "Use external fmt header-only library instead of bundled" OFF) option(SPDLOG_NO_EXCEPTIONS "Compile with -fno-exceptions. Call abort() on any spdlog exceptions" OFF) +if(SPDLOG_USE_STD_FORMAT) + set(CMAKE_CXX_STANDARD 20) + set(CMAKE_CXX_STANDARD_REQUIRED ON) +elseif(NOT CMAKE_CXX_STANDARD) + set(CMAKE_CXX_STANDARD 11) + set(CMAKE_CXX_STANDARD_REQUIRED ON) +endif() + +message(STATUS "C++ standard: ${CMAKE_CXX_STANDARD}") + + if(SPDLOG_FMT_EXTERNAL AND SPDLOG_FMT_EXTERNAL_HO) message(FATAL_ERROR "SPDLOG_FMT_EXTERNAL and SPDLOG_FMT_EXTERNAL_HO are mutually exclusive") endif()