# INTENTIONALLY INVALID Makefile. The recipe lines below are indented with SPACES, not the TAB
# character make requires, so make reports "missing separator". This is the single most common
# Makefile defect and the reason .mk fixtures have to control whitespace byte for byte.
BUILD_DIR := build

.PHONY: all
all: build

build:
    @echo "this line starts with four spaces, not a tab"
    @echo "make will stop here with: *** missing separator.  Stop."

clean:
    @echo "same fault again"