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I am trying to include ioctl.h on my Gumstix Linux in order to use the on-board ADC.

In turn, ioctl.h includes asm/ioctls.h which is missing on my machine.

In fact, the entire /usr/asm directory is missing. Does anybody know how I am supposed to add/install it and why it is missing?

Kev
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Itamar
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    Sanity check: you did check `/usr/include/asm`, not `/usr/asm`, right? I don't know the Gumstix development kit; the `asm` directory is for applications that interact closely with the kernel (it's from the kernel, not from libc) so it may be in a separate component from the usual headers. – Gilles 'SO- stop being evil' Jul 15 '11 at 11:26
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    P.S. to people who want to migrate this to SU: no! This question is about development tools, so it's on-topic on SO. And it would be off-topic on SU, a Gumstix board isn't a computer by its definition. – Gilles 'SO- stop being evil' Jul 15 '11 at 11:28

2 Answers2

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It depends on architecture. For example for x86, the file

/arch/x86/include/asm/ioctl.h

includes

include/asm-generic/ioctl.h

that contains the relevant information

Roberto A. Foglietta
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I had this same issue. I created a symbolic link for this directory, as well as several others (sorry I cannot be more specific as this was at a previous employer and I don't have it with me.)

Make sure you have installed the kernel headers:

opkg install task-native-sdk

Then create symbolic links:

ln -s /usr/asm /usr/src/linux-3.0.0/include/asm/

(again, going on memory...)

Adam Casey
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