enable explicit components requirements specification

CMakeLists.txt

@@ -1,6 +1,8 @@
-# The following lines of boilerplate have to be in your project's
-# CMakeLists in this exact order for cmake to work correctly
 cmake_minimum_required(VERSION 3.5)
 
+# enable explicit components requirements specification
+# comment out if you want to implicitly include all esp-idf components
+set(COMPONENTS esptool_py main)
+
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
-project(your-project-name-here)
+project(your-project-name-here)  # TODO: change to your project name

main/CMakeLists.txt

@@ -5,9 +5,19 @@ set(srcs
 # TODO: add new source (.c/.cc/.cpp) files here (best if kept in lexical order)
 )
 
+set(requires
+# System
+spi_flash
+
+# Project
+fmtlib
+scope_guard
+)
+
 idf_component_register(
     SRCS ${srcs}
     INCLUDE_DIRS "."
+    REQUIRES ${requires}
 )
 
 # compiler flags for the `main` component can be specified here