Sample cmake script

CMakeList.txt

##################################################
# run this script
cmake -DWIN32 -P CMakeList.txt

##################################################
# control flow
if(WIN32) 
  message("You are running on Windows.")
endif

if(${WIN32}) 
  message("You are running on Windows.")
endif


##################################################
# math operations
math(EXPR MY_SUM "1 + 1")                   # Evaluate 1 + 1; store result in MY_SUM
message("The sum is ${MY_SUM}.")
math(EXPR DOUBLE_SUM "${MY_SUM} * 2")       # Multiply by 2; store result in DOUBLE_SUM
message("Double that is ${DOUBLE_SUM}.")


##################################################
# function example
function(fibonacci MAX)
  set(A "1")
  set(B "1")
  while(A LESS "${MAX}")
      message("${A}")                 # Print A
      math(EXPR T "${A} + ${B}")      # Add the numeric values of A and B; store result in T
      set(A "${B}")                   # Assign the value of B to A
      set(B "${T}")                   # Assign the value of T to B
  endwhile()
endfunction()

fibonacci(RESULT "100")
message("${RESULT}")