Writing makefiles for headers outside 'usr/include'

Writing makefiles for headers outside 'usr/include'

[testlaster]

So the initial problem I'm having is that wanting to use headers and 
their libs like|module.h|and|init.d|and|pci.h|for instance can't be used 
by simply going|#include <pci.h>|because if you check the 
actual|pci.h|||(40 lines or so) file you will find that its allot 
shorter then the usual dev|pci.h| so needless to say you can't use all 
the functions. So now I have to use makefiles to point to other directories.

I've been trying to create makefiles but at the moment the errors just 
rack up so much that I really don't know what part of the process is at 
fault. Is it the C or the headers or the wrong libraries? I'm kind of 
clueless to where the libraries might even be.

Could someone please help me write a makefile for Linux headers and 
their libraries that is not in the usual|/usr/include|directory? The 
source files that I want to use will be 
in|usr/src/linux-headers-3.13.0.32-generic/include|. Also if they are in 
the makefile how will I include them in the source?

I've been learning a lot of things in parallel and I think the curve is 
starting to get to me. :/

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Writing makefiles for headers outside 'usr/include'

[Anders Darander]

On 26 August 2014 10:09, testlaster <testlaster@gmail.com> wrote:
> So the initial problem I'm having is that wanting to use headers and their
> libs like module.h and init.d and pci.h for instance can't be used by simply
> going #include <pci.h> because if you check the actual pci.h (40 lines or
> so) file you will find that its allot shorter then the usual dev pci.h so
> needless to say you can't use all the functions. So now I have to use
> makefiles to point to other directories.

Stop for a moment.
What are you trying to do? Are you writing a kernel module or a user-space
application?

> I've been trying to create makefiles but at the moment the errors just rack
> up so much that I really don't know what part of the process is at fault. Is
> it the C or the headers or the wrong libraries? I'm kind of clueless to
> where the libraries might even be.
>
> Could someone please help me write a makefile for Linux headers and their
> libraries that is not in the usual /usr/include directory? The source files
> that I want to use will be in
> usr/src/linux-headers-3.13.0.32-generic/include. Also if they are in the
> makefile how will I include them in the source?

If you're writing a kernel module, you can't use the headers from /usr/include.

If you're writing a user-space application, yuo should use the headers from
/usr/include, not the one from /usr/src/linux-headers-3.13.0.32-generic/include.

Let us know what you're trying to do, what you've got sofar, and what errors
you're getting.

Cheers,
Anders

-- 
Anders Darander
EPO guidelines 1978: "If the contribution to the known art resides
solely in a computer program then the subject matter is not
patentable in whatever manner it may be presented in the claims."

Writing makefiles for headers outside 'usr/include'

[testlaster]

Alright soo I want to access a piece of allocated memory through the PCI 
device which is PLX9054 chip.
All I really need to do is gain access to it and dump the data from it 
into a file.
Now the user space one would have been nice if I could use it but the 
PCI.H in user space dev folder " /usr/include " is really limiting
OR I just dont know how I can do it with only the 8 or so functions 
given to me there. Also I think permissions might be a problem in user 
space.

Because as far as I know accessing a PCI devices Memory you need to 
populate a struct with and give it a handle and then pass it on to 
mmap() if im not mistaken.
But I cant even get to try and code it cause at the moment I cant even 
seem to get the environment/makefiles set up correctly to be able to 
link all of the needed .H
  files and libraries in.


On 8/26/2014 10:31 AM, Anders Darander wrote:
> On 26 August 2014 10:09, testlaster <testlaster@gmail.com> wrote:
>> So the initial problem I'm having is that wanting to use headers and their
>> libs like module.h and init.d and pci.h for instance can't be used by simply
>> going #include <pci.h> because if you check the actual pci.h (40 lines or
>> so) file you will find that its allot shorter then the usual dev pci.h so
>> needless to say you can't use all the functions. So now I have to use
>> makefiles to point to other directories.
> Stop for a moment.
> What are you trying to do? Are you writing a kernel module or a user-space
> application?
>
>> I've been trying to create makefiles but at the moment the errors just rack
>> up so much that I really don't know what part of the process is at fault. Is
>> it the C or the headers or the wrong libraries? I'm kind of clueless to
>> where the libraries might even be.
>>
>> Could someone please help me write a makefile for Linux headers and their
>> libraries that is not in the usual /usr/include directory? The source files
>> that I want to use will be in
>> usr/src/linux-headers-3.13.0.32-generic/include. Also if they are in the
>> makefile how will I include them in the source?
> If you're writing a kernel module, you can't use the headers from /usr/include.
>
> If you're writing a user-space application, yuo should use the headers from
> /usr/include, not the one from /usr/src/linux-headers-3.13.0.32-generic/include.
>
> Let us know what you're trying to do, what you've got sofar, and what errors
> you're getting.
>
> Cheers,
> Anders
>