Fix implicit make rules overruling explicit ones

diff --git a/Makefile b/Makefile
index e642adbc4122fcb41551d238ecb05ad843214250..eef356c50d076df6be19370809e52cd228055a96 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+MAKEFLAGS += --no-builtin-rules
+
 CC := gcc
 CFLAGS = -std=c11 -Wall -Wextra -Werror -Wpedantic