move to new build system

cmake/libraries/cli11.cmake

@@ -0,0 +1,28 @@
+if(PROJECT_ENABLE_CLI11)
+  if(PROJECT_BUILD)
+    find_package(CLI11 ${CLI11_VERSION} REQUIRED)
+
+    add_definitions(-DPROJECT_ENABLE_CLI11)
+  elseif(NOT PROJECT_IS_MINGW OR CMAKE_HOST_WIN32)
+    ExternalProject_Add(cli11_project
+      PREFIX external
+      URL ${PROJECT_3RD_PARTY_DIR}/CLI11-${CLI11_VERSION}.tar.gz
+      URL_HASH SHA256=f2d893a65c3b1324c50d4e682c0cdc021dd0477ae2c048544f39eed6654b699a
+      LIST_SEPARATOR |
+      CMAKE_ARGS ${PROJECT_EXTERNAL_CMAKE_FLAGS}
+        -DBUILD_SHARED_LIBS=${PROJECT_BUILD_SHARED_LIBS}
+        -DBUILD_STATIC_LIBS=ON
+        -DCLI11_WARNINGS_AS_ERRORS=OFF
+        -DCLI11_SINGLE_FILE=ON
+        -DCLI11_BUILD_DOCS=OFF
+        -DCLI11_BUILD_TESTS=OFF
+        -DCLI11_BUILD_EXAMPLES=OFF
+        -DCLI11_INSTALL=ON
+    )
+
+    set(PROJECT_DEPENDENCIES
+      ${PROJECT_DEPENDENCIES}
+      cli11_project
+    )
+  endif()
+endif()