Isolate chad.mk

Makefile

@@ -1,4 +1,5 @@
 include config.mk
+include tests/chad.mk
 
 SRC.dir:=source
 OBJ.dir:=obj

tests/chad.mk

@@ -0,0 +1,18 @@
+# Programs to check warnings for as defined by the chad standard
+
+GCC:=gcc
+GCC.warnings:=-Wall -Wextra -Wpedantic -Wvla -Wshadow -Wundef
+
+CLANG:=clang
+CLANG.warnings:=-Weverything
+
+VALGRIND:=valgrind
+VALGRIND.flags:=--track-origins=yes --leak-check=full --show-leak-kinds=all
+
+TARGET:=hl
+ARGS:=${TARGET} < source/main.c
+
+chad_test:
+	${GCC} ${GCC.warnings} ${SRC} -o ${TARGET}
+	${CLANG} ${GCC.warnings} ${SRC} -o ${TARGET}
+	${VALGRIND} ${VALGRIND.flags} $(shell pwd)/${TARGET} ${ARGS}