Makefile

# comment
include Makefile.in
-include Makefile.doesntexist
.PHONY: all
all: target
foo = bar $(var)\
$(baz) quux
ifeq ($(CC),gcc)
 bla=$(call func,param1,param2)
else ifeq "x" "y"
 $(error this seems wrong)
else
 libs=$(normal_libs)
endif
target1:
error
target2: bla.cpp $@
	$(CC) bla.c -o bla.o
	$(CC) bla.o $< \
	 -o bla.exe
	@echo "hello"\
 bla bla
	echo "hello" \
 bla bla
target3:; @echo ’hello \
world’ ; echo "hello \
world"
	@echo "hello"
target4:; echo ’hello \
world’ ; echo "hello \
world"
	echo "hello"
target5 \
target6 \
target7 &::
	@echo "hello"
# this should not break the rule
 # ifndef is a command
	ifndef
# String Substitution
VAR :=$(ANOTHER_VAR:%=%+1)
# Variable Assignment
RELAXED ::= mello
rempl := x
foo := a b c
bar := foo
hello :=$($(bar):a=$(rempl))
my??var=value
var??=value
var?=value
var? = value
var :::= value
var ::= value
var += value
var != value
 var = value\#nocomment
 var = value#comment
 var = value;value2
override var = a
define var :::=
bar
endef
override define var :::=
bar
endef
undefine var
override undefine var
export foo bar
export foo = bar
unexport foo bar
prog:private EXTRA_CFLAGS = -L/usr/local/lib
prog:CFLAGS = -g
prog: a.o b.o
# Conditionals
bar =
foo =$(bar)
ifdef bar
frobozz = yes
else ifdef foo
frobozz = no
endif
error_type := 0
check:
ifeq ($(error_type),0)
else ifeq ($(error_type),1)
else ifeq ($(error_type),2)
else ifeq ($(error_type),3)
endif
$(info"'")
$(info'"')
$(info$(??))
$(eval$(call Variable_rule,target/compile_flags,$${CXX} $$(CXXFLAGS)))
$(eval${call Variable_rule,target/link_flags,$$(CXX) $$(LDFLAGS) $${LDLIBS}})