Nested conditionals in makefiles - if-statement

Question

A makefile here has nested if statements to assign variable values and targets to be built.
The current nested structure isn't really a nest - it is a series of if statements:
There isn't any use of else.
Is this because makefiles don't have an equivalent of elseIf?
Current structure (indentations added for readability in this post)
If condition x
if condition x.x
blah
endif
if condition x.y
blah blah
endif
endif
if condition y
if condition y.x
blah
endif
if condition y.y
blah blah
endif
endif
Pseudocod-ish version of desired structure:
If condition x
if condition x.x
blah
else
if condition x.y
blah blah
endif
else
if condition y
if condition y.x
blah
else
if condition y.y
blah blah
endif
endif

Answer 1

Does this answer your question?
ifeq ($(VAR1),x)
ifeq ($(VAR2),x)
$(info x.x)
else ifeq ($(VAR2),y)
$(info x.y)
endif
else ifeq ($(VAR1),y)
ifeq ($(VAR2),x)
$(info y.x)
else ifeq ($(VAR2),y)
$(info y.y)
endif
endif
all:;
Demo:
$ make VAR1=x VAR2=y
x.y
make: 'all' is up to date.
But you can also:
ifeq ($(VAR1).$(VAR2),x.x)
$(info x.x)
else ifeq ($(VAR1).$(VAR2),x.y)
$(info x.y)
else ifeq ($(VAR1).$(VAR2),y.x)
$(info y.x)
else ifeq ($(VAR1).$(VAR2),y.y)
$(info y.y)
endif
all:;
Demo:
$ make VAR1=y VAR2=x
y.x
make: 'all' is up to date.
For more information the best source is the GNU make manual, section Syntax of Conditionals.