initial commit

CMakeLists.txt

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+# 3.8 version is required for `cxx_std_17`
+cmake_minimum_required(VERSION 3.8 FATAL_ERROR)
+
+if(NOT DEFINED PROJECT_NAME)
+    set(BUILD_AS_STANDALONE ON)
+endif()
+
+project(enum.hpp)
+
+add_library(${PROJECT_NAME} INTERFACE)
+target_include_directories(${PROJECT_NAME} INTERFACE headers)
+target_compile_features(${PROJECT_NAME} INTERFACE cxx_std_17)
+
+if(BUILD_AS_STANDALONE)
+    option(BUILD_WITH_UNTESTS "Build with unit tests" ON)
+    if(BUILD_WITH_UNTESTS)
+        enable_testing()
+        add_subdirectory(untests)
+    endif()
+endif()