From bf60065bb8224395f4a3341d1d65ae2e6af98c17 Mon Sep 17 00:00:00 2001
From: Mark Paronyan <markparonian@gmail.com>
Date: Thu, 1 Oct 2026 12:33:00 +0000
Subject: [PATCH] fix(make): warn when config.def.h is newer than config.h

---
 Makefile | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index e51e770..f05a75d 100644
--- a/Makefile
+++ b/Makefile
@@ -10,8 +10,13 @@ DEBUG_CFLAGS = ${CFLAGS} -UNDEBUG -O0 -g -ggdb -Wall -Wextra -Wno-unused-paramet
 
 all: dvtm dvtm-editor
 
-config.h:
-	cp config.def.h config.h
+config.h: config.def.h
+	@if [ -e $@ ]; then \
+		echo "warning: $< is newer than $@, review the changes and merge them into $@ or delete $@ to regenerate it" >&2; \
+	else \
+		echo "cp $< $@"; \
+		cp $< $@; \
+	fi
 
 dvtm: config.h config.mk *.c *.h
 	${CC} ${CFLAGS} ${SRC} ${LDFLAGS} ${LIBS} -o $@