Minor.

DavidAntliff · DavidAntliff · commit 1bca026c4fe8 · 2020-04-07T16:10:08.000+12:00
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,3 +1,4 @@
+# For IDF v4.x:
 #idf_component_register(SRCS "smbus.c" INCLUDE_DIRS include)
 
 set(COMPONENT_ADD_INCLUDEDIRS include)

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,4 @@`
	`1`	`+# For IDF v4.x:`
`1`	`2`	`#idf_component_register(SRCS "smbus.c" INCLUDE_DIRS include)`
`2`	`3`
`3`	`4`	`set(COMPONENT_ADD_INCLUDEDIRS include)`