[CMake] passing arguments to the final make

[Michael Hertling]

On 02/22/2012 06:32 PM, Andrea Crotti wrote:
> On 02/22/2012 05:25 PM, Michael Hertling wrote:
>> On 02/22/2012 04:43 PM, Andrea Crotti wrote:
>>> I would like to be able to pass arguments to my generated Makefile.
>>>
>>> Suppose I use an environment variable like this:
>>>
>>> add_custom_target(run_dev_script
>>>     COMMAND ${PYTHON_EXECUTABLE} ${PREREQUISITE}
>>>     COMMAND ${PYTHON_EXECUTABLE} ${SCRIPT}
>>>     )
>>>
>>> Would that actually work?
>>> In theory ${SCRIPT} is substituted at cmake time, so I have the
>>> impression that it wouldn't work..
>>> I don't find anything useful in cmake -E however, that would allow me to
>>> do something at make time.
>>> Any suggestions?
>> CMAKE_MINIMUM_REQUIRED(VERSION 2.8 FATAL_ERROR)
>> PROJECT(P NONE)
>> ADD_CUSTOM_TARGET(echo ${CMAKE_COMMAND} -E echo \${ECHO})
>>
>> After initial configuration:
>>
>> % make echo ECHO="Hello World"
>> Scanning dependencies of target echo
>> Hello World
>> Built target echo
>> % make echo ECHO="Goodbye World"
>> Goodbye World
>> Built target echo
>>
>> % make echo ECHO="Regards, Michael"
>> Regards, Michael
>> Built target echo
> 
> Ah that's nice thanks, I'm not sure though that I can rely on being >= 
> 2.8 always,
> and that's probably a requirement, right?

It's sufficient that \$ makes it to the Makefile and becomes $ there.

Regards,

Michael