Nested if else in makefiles

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