Support for building and running external apps (#112)

Libraries/lv_screenshot/CMakeLists.txt

@@ -4,26 +4,32 @@ set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
-file(GLOB SOURCES "src/*.c*")
-file(GLOB HEADERS "src/*.h*")
-
-add_library(lv_screenshot STATIC)
-
-target_sources(lv_screenshot
-    PRIVATE ${SOURCES}
-    PUBLIC ${HEADERS}
-)
-
-target_include_directories(lv_screenshot
-    PRIVATE private
-    PUBLIC src
-)
-
 if (DEFINED ENV{ESP_IDF_VERSION})
-    target_link_libraries(lv_screenshot
-        PUBLIC idf::lvgl
+    file(GLOB_RECURSE SOURCE_FILES Source/*.c*)
+
+    idf_component_register(
+        SRCS ${SOURCE_FILES}
+        INCLUDE_DIRS "src/"
+        REQUIRES lvgl
     )
+
+    add_definitions(-DESP_PLATFORM)
 else()
+    file(GLOB SOURCES "src/*.c*")
+    file(GLOB HEADERS "src/*.h*")
+
+    add_library(lv_screenshot STATIC)
+
+    target_sources(lv_screenshot
+        PRIVATE ${SOURCES}
+        PUBLIC ${HEADERS}
+    )
+
+    target_include_directories(lv_screenshot
+        PRIVATE private
+        PUBLIC src
+    )
+
     target_link_libraries(lv_screenshot
         PUBLIC lvgl
     )