Update CMakeLists.txt

CMakeLists.txt

@@ -19,11 +19,13 @@ message(DEBUG "CMAKE_PROJECT_VERSION: ${CMAKE_PROJECT_VERSION}")
 
 option(TACTILE_BUILD_APP_BUNDLE "Build the editor as a macOS application bundle (.app)" OFF)
 option(TACTILE_BUILD_TESTS "Build the test suite" OFF)
+option(TACTILE_BUILD_LEGACY "Build the legacy targets" OFF)
 option(TACTILE_USE_SANITIZERS "Enable runtime sanitizers" OFF)
 option(TACTILE_USE_LTO "Enable link-time optimizations" OFF)
 
 message(DEBUG "TACTILE_BUILD_APP_BUNDLE: ${TACTILE_BUILD_APP_BUNDLE}")
 message(DEBUG "TACTILE_BUILD_TESTS: ${TACTILE_BUILD_TESTS}")
+message(DEBUG "TACTILE_BUILD_LEGACY: ${TACTILE_BUILD_LEGACY}")
 message(DEBUG "TACTILE_USE_SANITIZERS: ${TACTILE_USE_SANITIZERS}")
 message(DEBUG "TACTILE_USE_LTO: ${TACTILE_USE_LTO}")
 
@@ -84,9 +86,12 @@ find_path(STB_INCLUDE_DIRS "stb_c_lexer.h")
 add_subdirectory(modules)
 
 add_subdirectory(source/proto)
-add_subdirectory(source/lib)
-add_subdirectory(source/app)
 
-if (TACTILE_BUILD_TESTS MATCHES ON)
-  add_subdirectory(test)
+if (TACTILE_BUILD_LEGACY MATCHES ON)
+  add_subdirectory(source/lib)
+  add_subdirectory(source/app)
+
+  if (TACTILE_BUILD_TESTS MATCHES ON)
+    add_subdirectory(test)
+  endif ()
 endif ()