[CMake] process file contents

[Magnus Therning]

On 12/05/10 19:07, James C. Sutherland wrote:
> 
> On May 12, 2010, at 11:43 AM, James C. Sutherland wrote:
> 
>> I would like to execute a command like:
>> getrates -n < myFileName
>>
>> I am trying to add this so it is processed after the target "getrates"
>> is built
>>
>>     set( infile ${CMAKE_CURRENT_BINARY_DIR}/myFileName )
>>     add_custom_command( TARGET getrates
>>       POST_BUILD
>>       COMMAND "${CMAKE_CURRENT_BINARY_DIR}/getrates" " -n < ${infile}"
>>       WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
>>       VERBATIM
>>       )
>>
>>
>> This does not seem to work, however.  CMake doesn't handle the "<"
>> properly.  Any ideas about how to stream the contents of a file?
>>
>> Thanks,
>>
>> James
> 
> Got it.  It looks like removing the "" from the arguments does the job, i.e.
> 
>     add_custom_command( TARGET getrates
>       POST_BUILD
>       COMMAND ${CMAKE_CURRENT_BINARY_DIR}/getrates -n < ${infile}
>       WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
>       VERBATIM
>       )

Yes, I learned this the hard way too.  Basically it seems that an argument in
ticks ("") will be passed in as a single argument (handy when arguments
contain spaces).  That means that the equivalent shell command line was

    % getrates " -n < infile"

i.e. a single argument to the `getrates` command.

/M

-- 
Magnus Therning                        (OpenPGP: 0xAB4DFBA4)
magnus＠therning．org          Jabber: magnus＠therning．org
http://therning.org/magnus         identi.ca|twitter: magthe

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