genconfig: Add tip re. defining multi-line variables in makefiles

Handy for KCONFIG_{CONFIG,AUTOHEADER}_HEADER.

1 files changed, 4 insertions, 0 deletions

diff --git a/genconfig.py b/genconfig.py
index b202a5b..7d701ff 100755
--- a/genconfig.py
+++ b/genconfig.py
@@ -27,6 +27,10 @@ KCONFIG_AUTOHEADER_HEADER environment variables, respectively (this also works
 for other scripts). The string is not automatically made a comment (this is by
 design, to allow anything to be added), and no trailing newline is added, so
 add '/* */', '#', and newlines as appropriate.
+
+See https://www.gnu.org/software/make/manual/make.html#Multi_002dLine for a
+handy way to define multi-line variables in makefiles, for use with custom
+headers. Remember to export the variable to the environment.
 """
 import argparse
 import os