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CMAKE_MINIMUM_REQUIRED(VERSION 2.6 FATAL_ERROR)
SET( SOURCES back.c io.c main.c )
SET( PATH $ENV{PATH} )
MESSAGE( ${SOURCES} ) # three arguments, prints "back.cio.cmain.c"
MESSAGE( "${SOURCES}" ) # one argument, prints "back.c;io.c;main.c"
MESSAGE( "" ) # one argument, prints "" an empty line
MESSAGE( "${EMPTY_STRING}" ) # one argument, prints "" an empty line
MESSAGE( ${EMPTY_STRING} ) # zero arguments, causes CMake Error
# "MESSAGE called with incorrect number of arguments"
MESSAGE( \\\"\ \(\)\#\$\^ ) # this message contains literal characters
MESSAGE( "This is practice." ) # prints "This is practice."
MESSAGE( "This;is;practice." ) # prints "This;is;practice."
MESSAGE( "Hi. ) MESSAGE( x )" ) # prints "Hi. ) MESSAGE( x )"
MESSAGE( "Welc"ome ) # rule 1
MESSAGE( Welc"ome" ) # rule 3
MESSAGE( Welc"ome)" ) # rule 2
MESSAGE( ""Thanks ) # rule 1
MESSAGE( Thanks"" ) # rule 3
SET( x y A B C ) # stores "y;A;B;C" in x (without quote)
SET( ${x} ) # => SET( y;A;B;C ) => SET( y A B C)
MESSAGE( ${y} ) # prints "ABC" to stdout (without quotes)
SET( y x ) # stores "x" in y (without quotes)
SET( ${y} y = x ) # => SET( x y )
MESSAGE( "\${x} = '${x}'" ) # prints "${x} = 'y;=;x'" to stdout (without quotes)
SET( y ${x} ) # => SET( y y = x ) => stores "y;=;x" in y (without quotes)
MESSAGE( ${y} ) # prints "y=x" to stdout (without quotes)
SET( x a b c ) # stores "a;b;c" in x (without quotes)
SET( y "a b c" ) # stores "a b c" in y (without quotes)
MESSAGE( a b c ) # prints "abc" to stdout (without quotes)
MESSAGE( ${x} ) # prints "abc" to stdout (without quotes)
MESSAGE("${x}") # prints "a;b;c" to stdout (without quotes)
MESSAGE( ${y} ) # prints "a b c" to stdout (without quotes)
MESSAGE("${y}") # prints "a b c" to stdout (without quotes)
# This is a comment.
COMMAND( arguments go here )
ANOTHER_COMMAND() # this command has no arguments
YET_ANOTHER_COMMAND( these
arguments are spread # another comment
over several lines )
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