michael@0: ifdef FOO
michael@0: $(error FOO is not defined!)
michael@0: endif
michael@0: 
michael@0: FOO = foo
michael@0: FOOFOUND = false
michael@0: BARFOUND = false
michael@0: BAZFOUND = false
michael@0: 
michael@0: ifdef FOO
michael@0: FOOFOUND = true
michael@0: else ifdef BAR
michael@0: BARFOUND = true
michael@0: else
michael@0: BAZFOUND = true
michael@0: endif
michael@0: 
michael@0: BAR2 = bar2
michael@0: FOO2FOUND = false
michael@0: BAR2FOUND = false
michael@0: BAZ2FOUND = false
michael@0: 
michael@0: ifdef FOO2
michael@0: FOO2FOUND = true
michael@0: else ifdef BAR2
michael@0: BAR2FOUND = true
michael@0: else
michael@0: BAZ2FOUND = true
michael@0: endif
michael@0: 
michael@0: FOO3FOUND = false
michael@0: BAR3FOUND = false
michael@0: BAZ3FOUND = false
michael@0: 
michael@0: ifdef FOO3
michael@0: FOO3FOUND = true
michael@0: else ifdef BAR3
michael@0: BAR3FOUND = true
michael@0: else
michael@0: BAZ3FOUND = true
michael@0: endif
michael@0: 
michael@0: ifdef RANDOM
michael@0: CONTINUATION = \
michael@0: else           \
michael@0: endif
michael@0: endif
michael@0: 
michael@0: ifndef ASDFJK
michael@0: else
michael@0: $(error ASFDJK was not set)
michael@0: endif
michael@0: 
michael@0: TESTSET =
michael@0: 
michael@0: ifdef TESTSET
michael@0: $(error TESTSET was not set)
michael@0: endif
michael@0: 
michael@0: TESTEMPTY = $(NULL)
michael@0: ifndef TESTEMPTY
michael@0: $(error TEST-FAIL TESTEMPTY was probably expanded!)
michael@0: endif
michael@0: 
michael@0: # ifneq ( a,a)
michael@0: # $(error Arguments to ifeq should be stripped before evaluation)
michael@0: # endif
michael@0: 
michael@0: XSPACE = x # trick
michael@0: 
michael@0: ifneq ($(NULL),$(NULL))
michael@0: $(error TEST-FAIL ifneq)
michael@0: endif
michael@0: 
michael@0: ifneq (x , x)
michael@0: $(error argument-stripping1)
michael@0: endif
michael@0: 
michael@0: ifeq ( x,x )
michael@0: $(error argument-stripping2)
michael@0: endif
michael@0: 
michael@0: ifneq ($(XSPACE), x )
michael@0: $(error argument-stripping3)
michael@0: endif
michael@0: 
michael@0: ifeq 'x ' ' x'
michael@0: $(error TEST-FAIL argument-stripping4)
michael@0: endif
michael@0: 
michael@0: all:
michael@0: 	test $(FOOFOUND) = true   # FOOFOUND
michael@0: 	test $(BARFOUND) = false  # BARFOUND
michael@0: 	test $(BAZFOUND) = false  # BAZFOUND
michael@0: 	test $(FOO2FOUND) = false # FOO2FOUND
michael@0: 	test $(BAR2FOUND) = true  # BAR2FOUND
michael@0: 	test $(BAZ2FOUND) = false # BAZ2FOUND
michael@0: 	test $(FOO3FOUND) = false # FOO3FOUND
michael@0: 	test $(BAR3FOUND) = false # BAR3FOUND
michael@0: 	test $(BAZ3FOUND) = true  # BAZ3FOUND
michael@0: ifneq ($(FOO),foo)
michael@0: 	echo TEST-FAIL 'FOO neq foo: "$(FOO)"'
michael@0: endif
michael@0: ifneq ($(FOO), foo) # Whitespace after the comma is stripped
michael@0: 	echo TEST-FAIL 'FOO plus whitespace'
michael@0: endif
michael@0: ifeq ($(FOO), foo ) # But not trailing whitespace
michael@0: 	echo TEST-FAIL 'FOO plus trailing whitespace'
michael@0: endif
michael@0: ifeq ( $(FOO),foo) # Not whitespace after the paren
michael@0: 	echo TEST-FAIL 'FOO with leading whitespace'
michael@0: endif
michael@0: ifeq ($(FOO),$(NULL) foo) # Nor whitespace after expansion
michael@0: 	echo TEST-FAIL 'FOO with embedded ws'
michael@0: endif
michael@0: ifeq ($(BAR2),bar)
michael@0: 	echo TEST-FAIL 'BAR2 eq bar'
michael@0: endif
michael@0: ifeq '$(BAR3FOUND)' 'false'
michael@0: 	echo BAR3FOUND is ok
michael@0: else
michael@0: 	echo TEST-FAIL BAR3FOUND is not ok
michael@0: endif
michael@0: ifndef FOO
michael@0: 	echo TEST-FAIL "foo not defined?"
michael@0: endif
michael@0: 	@echo TEST-PASS