From ff184a610ec17fbb6956d3d5a0e090549be739cd Mon Sep 17 00:00:00 2001
From: Dylan Baker <dylan@pnwbakers.com>
Date: Fri, 29 Mar 2024 15:21:28 -0700
Subject: [PATCH] docs: Add use of depfile to CMake isntructions

---
 docs/fypp.rst | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/docs/fypp.rst b/docs/fypp.rst
index 985f761..881db9e 100644
--- a/docs/fypp.rst
+++ b/docs/fypp.rst
@@ -2109,11 +2109,15 @@ very first version of this example)::
       # Generate input file name
       set(infile "${CMAKE_CURRENT_SOURCE_DIR}/${infileName}")
 
+      # Create the dependency file
+      set(depfile "${CMAKE_CURRENT_BINARY_DIR/${outfileName}.d")
+
       # Custom command to do the processing
       add_custom_command(
           OUTPUT "${outfile}"
-          COMMAND fypp "${infile}" "${outfile}"
+          COMMAND fypp "${infile}" "${outfile}" --depfile "${depfile}"
           MAIN_DEPENDENCY "${infile}"
+          DEPFILE "${depfile}"
           VERBATIM)
 
       # Finally add output file to a list