CMakeMacroMerge

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NOTE: You can merge and sort lists using the SET() and LIST() command and no longer need this macro.

 set(FIRST_LIST  a b c d i j k l)
 set(SECOND_LIST e f g h m n o p)
 set(COMPLETE_LIST ${FIRST_LIST} ${SECOND_LIST})
 list(SORT COMPLETE_LIST)
 # you can also remove duplicates
 list(REMOVE_DUPLICATES COMPLETE_LIST)

CAUTION: The contents of this page may be obsolete
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    # This macro merges elements in sorted lists ALIST and BLIST and stored the result in OUTPUT
    MACRO(MERGE ALIST BLIST OUTPUT)
    SET(BTEMP ${BLIST})
    FOREACH(A ${ALIST})
        SET(SORTED)
        SET(UNINSERTED 1)
        FOREACH(B ${BTEMP})
            IF(${UNINSERTED})
                IF(${A} STRLESS ${B})
                    SET(SORTED ${SORTED} ${A})
                    SET(UNINSERTED 0)
                ENDIF(${A} STRLESS ${B})
            ENDIF(${UNINSERTED})
            SET(SORTED ${SORTED} ${B})
        ENDFOREACH(B ${BLIST})
        IF(${UNINSERTED})
            SET(SORTED ${SORTED} ${A})
        ENDIF(${UNINSERTED})
        SET(BTEMP ${SORTED})
    ENDFOREACH(A ${ALIST})
    SET(${OUTPUT} ${BTEMP})
    ENDMACRO(MERGE ALIST BLIST OUTPUT)
    
    # Here is an example that merges *.cpp files and *.h files into a single sorted list
    # This would be easier if FILE(GLOB...) properly matches "*.{cpp,h}"
    FILE(GLOB ALGEBRAIC_SRCS Implicit/Algebraic/*.cpp)
    FILE(GLOB ALGEBRAIC_H Implicit/Algebraic/*.h)
    MERGE("${ALGEBRAIC_H}" "${ALGEBRAIC_SRCS}" ALGEBRAIC_SRCS)

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