[CMake] custom target (kernel modules)

[Alexandru Ciobanu]

Hi, Peter!

Sure, I can show you how I've used it exactly. Here it is:

set ( kofile ${CMAKE_CURRENT_SOURCE_DIR}/manager.ko )
add_custom_command ( OUTPUT ${kofile}
                     COMMAND ${kbuild_cmd}
                     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
                     DEPENDS ${src} Kbuild )
add_custom_target ( cool_driver ALL DEPENDS ${kofile} )

Alex Ciobanu

Peter Visser wrote:
> Hi,
>
> could you post the working example? I'm doing something similar but 
> I'm doing it wrong, the add_custom_command is always being build in my 
> case.
>
> Thanks in advance,
>
> Peter.
>
> On 6/28/07, *Alexandru Ciobanu* <aciobanu at matrox.com 
> <mailto:aciobanu at matrox.com>> wrote:
>
>     Thanks Alan, it works.
>     =)
>
>     Alan W. Irwin wrote:
>     > On 2007-06-28 10:08-0400 Alexandru Ciobanu wrote:
>     >
>     >> Hi!
>     >>
>     >> I am trying to build kernel modules with CMake. To do that I
>     >> use the command below:
>     >>
>     >>  add_custom_target ( manager.ko ${kbuild_cmd}
>     >>     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/linux
>     >>     DEPENDS ${src} linux/Kbuild
>     >>  )
>     >>
>     >> The problem is that nobody depends on this custom target and so
>     it is
>     >> never build when running make.
>     >>
>     >> If I use the ALL parameter in add_custom_target() it will always
>     >> rebuild it,
>     >> even if none of source files has changes.
>     >>
>     >> So how do I make this work so that it builds when I run make
>     but also
>     >> builds only when necessary, like any other target add_library(),
>     >> add_executable(), etc. ?
>     >
>     > Use ADD_CUSTOM_COMMAND instead with an empty (COMMANDless)
>     > ADD_CUSTOM_TARGET
>     > with the ALL parameter that-file depends on the custom command.
>     >
>     > Alan
>     > __________________________
>     > Alan W. Irwin
>     >
>     > Astronomical research affiliation with Department of Physics and
>     > Astronomy,
>     > University of Victoria ( astrowww.phys.uvic.ca
>     <http://astrowww.phys.uvic.ca>).
>     >
>     > Programming affiliations with the FreeEOS equation-of-state
>     > implementation
>     > for stellar interiors (freeeos.sf.net <http://freeeos.sf.net>);
>     PLplot scientific plotting
>     > software
>     > package (plplot.org <http://plplot.org>); the libLASi project
>     (unifont.org/lasi <http://unifont.org/lasi>); the
>     > Loads of
>     > Linux Links project ( loll.sf.net <http://loll.sf.net>); and the
>     Linux Brochure Project
>     > (lbproject.sf.net <http://lbproject.sf.net>).
>     > __________________________
>     >
>     > Linux-powered Science
>     > __________________________
>     >
>     >
>
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