- Sidequest: Clean up header-only library dependencies with cmake.

cmake/MagicEnum.cmake

@@ -1,17 +1,15 @@
 include(ExternalProject)
-# Download RapidJSON
-ExternalProject_Add(
-        magic-enum
-        PREFIX "third_party/magic-enum"
-        GIT_REPOSITORY "https://github.com/Neargye/magic_enum"
+
+project(magicEnum)
+
+ExternalProject_Add(${PROJECT_NAME}-external
+        GIT_REPOSITORY https://github.com/Neargye/magic_enum.git
         GIT_TAG "v0.7.3"
-        TIMEOUT 10
-        CONFIGURE_COMMAND ""
+        GIT_SHALLOW TRUE
+        SOURCE_DIR ${THIRD_PARTY_DIR}/${PROJECT_NAME}
         BUILD_COMMAND ""
         INSTALL_COMMAND ""
-        UPDATE_COMMAND ""
-)
-
-# Magic Enums is a header-only
-ExternalProject_Get_Property(magic-enum source_dir)
-set(MAGIC_ENUM_INCLUDE_DIR ${source_dir}/include)
+        CONFIGURE_COMMAND "")
+add_library(${PROJECT_NAME} INTERFACE)
+add_dependencies(${PROJECT_NAME} ${PROJECT_NAME}-external)
+target_include_directories(${PROJECT_NAME} SYSTEM INTERFACE ${THIRD_PARTY_DIR}/${PROJECT_NAME}/include)