Hi, On 22/05/13 12:18, Jiri Slaby wrote: > Some drivers can be built on more platforms than they run on. This > causes users and distributors packaging burden when they have to > manually deselect some drivers from their allmodconfigs. Or sometimes > it is even impossible to disable the drivers without patching the > kernel. > > Introduce a new config option COMPILE_TEST and make all those drivers > to depend on the platform they run on, or on the COMPILE_TEST option. > Now, when users/distributors choose COMPILE_TEST=n they will not have > the drivers in their allmodconfig setups, but developers still can > compile-test them with COMPILE_TEST=y. > > Now the drivers where we use this new option: > * PTP_1588_CLOCK_PCH: The PCH EG20T is only compatible with Intel Atom > processors so it should depend on x86. > * FB_GEODE: Geode is 32-bit only so only enable it for X86_32. > * USB_CHIPIDEA_IMX: The OF_DEVICE dependency will be met on powerpc > systems -- which do not actually support the hardware via that > method. I had this exact same idea some time ago. The mail below contains some of my reasoning for this: http://comments.gmane.org/gmane.linux.kbuild.devel/9829 I proposed a new Kconfig keyword, but Sam was quite against it as the Kconfig language already does what is required. Tomi
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