[CMake] install an empty directory

[David Cole]

Am I correct inferring from this thread that the chicken actually did 
come first?

Brad King wrote:

>Brandon J. Van Every wrote:
>  
>
>>David Cole wrote:
>>    
>>
>>>How about:
>>>INSTALL(CODE "MAKE_DIRECTORY(\"lib/chicken/1\")")
>>>
>>>      
>>>
>>Almost!  Needs a ${CMAKE_INSTALL_PREFIX} qualifier, then it works.
>>
>># Destination for eggs.  No eggs to install though.
>>INSTALL(CODE "
>> MESSAGE(STATUS \"Installing ${CMAKE_INSTALL_PREFIX}/lib/chicken/1\")
>> MAKE_DIRECTORY(\"${CMAKE_INSTALL_PREFIX}/lib/chicken/1\")
>>")
>>    
>>
>
>Actually to be completely correct you need to account for DESTDIR
>installs.  Also you do not want the install prefix or destdir to
>evaluate until install time, so you need to escape the $ tokens too:
>
>INSTALL(CODE "
>MESSAGE(STATUS \"Installing \${CMAKE_INSTALL_PREFIX}/lib/chicken/1\")
>MAKE_DIRECTORY(\"\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/lib/chicken/1\")
>")
>
>
>-Brad
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