[CMake] custom target (kernel modules)

[Alan W. Irwin]

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).

Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of
Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
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