[Xenomai] Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Xenomai] Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Helder Daniel]

Hi,

I am trying to compile a simple RTDM driver that rtdm_printks a message
when IRQ 12 (PS2 mouse) is up.

It's a Debian 32 bit system on top of a 64 bit core 2 duo P8600 processor,
however I already installed g++multilib package which get me rid of other
related errors with missing libc versions.

I am using a Makefile that works for Xenomai 2.5.x series, but I get an
error: "boilerplate/wrappers.h: No such file or directory"
and lot's of other. (Complete list of errors is at the end).

The make file I am using is this:

obj-m += intr.o

EXTRA_CFLAGS := -I/usr/xenomai/include -I/usr/include

all:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
clean:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean

Maybe I have the wrong dirs in the compiler include path?
If I just set include path as (removing /usr/include):

EXTRA_CFLAGS := -I/usr/xenomai/include

I get just an error:

/usr/xenomai/include/rtdm/rtdm.h:23:19: fatal error: fcntl.h: No such file
or directory

but fcntl.h shouldn't be required only on userland?

May I am including an rtdm.h for user land?
I've found some rtdm.h files in xenomai install dir:

/usr/xenomai/include/trank/rtdm/rtdm.h
/usr/xenomai/include/rtdm/uapi/rtdm.h
/usr/xenomai/include/rtdm/rtdm.h

If so there is one just for kernel space?
I guess for user space is:
/usr/xenomai/include/rtdm/uapi/rtdm.h

for kernel:
/usr/xenomai/include/rtdm/rtdm.h

I am not sure why there is a version in trank?
/usr/xenomai/include/trank/rtdm/rtdm.h

I am including in the module <rtdm/rtdm.h>, so:
 /usr/xenomai/include/rtdm/rtdm.h

My Xenomai version is:

$> /usr/xenomai/sbin/version -a
Xenomai/cobalt v3.0-rc3 --
Target: i686-pc-linux-gnu
Compiler: gcc version 4.7.2 (Debian 4.7.2-5)
Build args:  '--with-core=cobalt' '--enable-registry' '--enable-smp'
'--enable-pshared' '--prefix=/usr/xenomai'

Module source code is:

#include <linux/module.h> // Needed by all modules
#include <rtdm/rtdm.h>

#define IRQ 12
#define "PS2MouseIntRT"

rtdm_irq_t;

int irq_handler (rtdm_irq_t *irq_handle) {
rtdm_printk ("IQR12 occurred (RTDM handler)\n");
return RTDM_IRQ_HANDLED;
}

static int __init start(void) {
    //Requets IRQ
    return rtdm_irq_request(&intr, IRQ, irq_handler, 0, name, NULL);
}

static void __exit stop(void) {
    //frees IRQ
rtdm_irq_free (&intr);
}

module_init(start);
module_exit(stop);


Complete output of make file:

make
echo -I/usr/xenomai/include -I/usr/include
-I/usr/xenomai/include -I/usr/include
make -C /lib/modules/3.18.7-rt2/build M=/root/prg/01-rtdm_interrupt modules
make[1]: Entering directory `/usr/src/linux-headers-3.18.7-rt2'
  CC [M]  /root/prg/01-rtdm_interrupt/intr.o
In file included from /usr/include/features.h:356:0,
                 from /usr/include/fcntl.h:27,
                 from /usr/xenomai/include/rtdm/rtdm.h:23,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/sys/cdefs.h:287:0: warning: "__always_inline" redefined
[enabled by default]
In file included from include/linux/compiler.h:54:0,
                 from include/uapi/linux/stddef.h:1,
                 from include/linux/stddef.h:4,
                 from ./include/uapi/linux/posix_types.h:4,
                 from include/uapi/linux/types.h:13,
                 from include/linux/types.h:5,
                 from include/linux/list.h:4,
                 from include/linux/module.h:9,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/linux/compiler-gcc.h:118:0: note: this is the location of the
previous definition
In file included from /usr/include/bits/fcntl.h:25:0,
                 from /usr/include/fcntl.h:34,
                 from /usr/xenomai/include/rtdm/rtdm.h:23,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/sys/types.h:61:17: error: conflicting types for ‘dev_t’
In file included from include/linux/list.h:4:0,
                 from include/linux/module.h:9,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/linux/types.h:15:25: note: previous declaration of ‘dev_t’ was here
In file included from /usr/include/bits/fcntl.h:25:0,
                 from /usr/include/fcntl.h:34,
                 from /usr/xenomai/include/rtdm/rtdm.h:23,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/sys/types.h:71:18: error: conflicting types for ‘mode_t’
In file included from include/linux/list.h:4:0,
                 from include/linux/module.h:9,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/linux/types.h:17:26: note: previous declaration of ‘mode_t’ was here
In file included from /usr/include/sys/types.h:133:0,
                 from /usr/include/bits/fcntl.h:25,
                 from /usr/include/fcntl.h:34,
                 from /usr/xenomai/include/rtdm/rtdm.h:23,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/time.h:104:19: error: conflicting types for ‘timer_t’
In file included from include/linux/list.h:4:0,
                 from include/linux/module.h:9,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/linux/types.h:25:26: note: previous declaration of ‘timer_t’ was
here
In file included from /usr/include/bits/fcntl.h:25:0,
                 from /usr/include/fcntl.h:34,
                 from /usr/xenomai/include/rtdm/rtdm.h:23,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/sys/types.h:212:0: warning: "__BIT_TYPES_DEFINED__" redefined
[enabled by default]
In file included from include/linux/list.h:4:0,
                 from include/linux/module.h:9,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/linux/types.h:95:0: note: this is the location of the previous
definition
In file included from /usr/include/sys/select.h:44:0,
                 from /usr/include/sys/types.h:220,
                 from /usr/include/bits/fcntl.h:25,
                 from /usr/include/fcntl.h:34,
                 from /usr/xenomai/include/rtdm/rtdm.h:23,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/time.h:120:8: error: redefinition of ‘struct timespec’
In file included from ./arch/x86/include/asm/preempt.h:6:0,
                 from include/linux/preempt.h:18,
                 from include/linux/spinlock.h:50,
                 from include/linux/seqlock.h:35,
                 from include/linux/time.h:5,
                 from include/linux/stat.h:18,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/linux/thread_info.h:13:8: note: originally defined here
In file included from /usr/include/sys/select.h:46:0,
                 from /usr/include/sys/types.h:220,
                 from /usr/include/bits/fcntl.h:25,
                 from /usr/include/fcntl.h:34,
                 from /usr/xenomai/include/rtdm/rtdm.h:23,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/bits/time.h:75:8: error: redefinition of ‘struct timeval’
In file included from include/linux/time64.h:4:0,
                 from include/linux/time.h:7,
                 from include/linux/stat.h:18,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/time.h:15:8: note: originally defined here
In file included from /usr/include/sys/types.h:220:0,
                 from /usr/include/bits/fcntl.h:25,
                 from /usr/include/fcntl.h:34,
                 from /usr/xenomai/include/rtdm/rtdm.h:23,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/sys/select.h:78:5: error: conflicting types for ‘fd_set’
In file included from include/linux/list.h:4:0,
                 from include/linux/module.h:9,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/linux/types.h:14:26: note: previous declaration of ‘fd_set’ was here
In file included from /usr/include/bits/fcntl.h:25:0,
                 from /usr/include/fcntl.h:34,
                 from /usr/xenomai/include/rtdm/rtdm.h:23,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/sys/types.h:236:20: error: conflicting types for ‘blkcnt_t’
In file included from include/linux/list.h:4:0,
                 from include/linux/module.h:9,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/linux/types.h:131:13: note: previous declaration of ‘blkcnt_t’ was
here
In file included from /usr/include/fcntl.h:41:0,
                 from /usr/xenomai/include/rtdm/rtdm.h:23,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/bits/stat.h:46:8: error: redefinition of ‘struct stat’
In file included from include/linux/stat.h:5:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
./arch/x86/include/uapi/asm/stat.h:9:8: note: originally defined here
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:43:0: warning: "S_IFMT" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:7:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:44:0: warning: "S_IFDIR" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:12:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:45:0: warning: "S_IFCHR" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:13:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:46:0: warning: "S_IFBLK" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:11:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:47:0: warning: "S_IFREG" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:10:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:49:0: warning: "S_IFIFO" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:14:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:52:0: warning: "S_IFLNK" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:9:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:55:0: warning: "S_IFSOCK" redefined [enabled by
default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:8:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:60:0: warning: "S_ISUID" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:15:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:61:0: warning: "S_ISGID" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:16:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:65:0: warning: "S_ISVTX" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:17:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:68:0: warning: "S_IRUSR" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:28:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:69:0: warning: "S_IWUSR" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:29:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:70:0: warning: "S_IXUSR" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:30:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:72:0: warning: "S_IRWXU" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:27:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:74:0: warning: "S_IRGRP" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:33:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:75:0: warning: "S_IWGRP" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:34:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:76:0: warning: "S_IXGRP" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:35:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:78:0: warning: "S_IRWXG" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:32:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:80:0: warning: "S_IROTH" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:38:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:81:0: warning: "S_IWOTH" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:39:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:82:0: warning: "S_IXOTH" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:40:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:23:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/fcntl.h:84:0: warning: "S_IRWXO" redefined [enabled by default]
In file included from include/linux/stat.h:6:0,
                 from include/linux/module.h:10,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/uapi/linux/stat.h:37:0: note: this is the location of the previous
definition
In file included from /usr/xenomai/include/rtdm/rtdm.h:25:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/stdint.h:129:23: error: conflicting types for ‘uintptr_t’
In file included from include/linux/list.h:4:0,
                 from include/linux/module.h:9,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/linux/types.h:36:24: note: previous declaration of ‘uintptr_t’ was
here
In file included from /usr/xenomai/include/rtdm/rtdm.h:25:0,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/stdint.h:268:0: warning: "SIZE_MAX" redefined [enabled by
default]
In file included from include/linux/list.h:8:0,
                 from include/linux/module.h:9,
                 from /root/prg/01-rtdm_interrupt/intr.c:1:
include/linux/kernel.h:30:0: note: this is the location of the previous
definition
In file included from /usr/include/sys/socket.h:40:0,
                 from /usr/xenomai/include/rtdm/rtdm.h:29,
                 from /root/prg/01-rtdm_interrupt/intr.c:3:
/usr/include/bits/socket.h:431:23: warning: ‘struct mmsghdr’ declared
inside parameter list [enabled by default]
/usr/include/bits/socket.h:431:23: warning: its scope is only this
definition or declaration, which is probably not what you want [enabled by
default]
In file included from /root/prg/01-rtdm_interrupt/intr.c:3:0:
/usr/xenomai/include/rtdm/rtdm.h:30:34: fatal error:
boilerplate/wrappers.h: No such file or directory
compilation terminated.
make[2]: *** [/root/prg/01-rtdm_interrupt/intr.o] Error 1
make[1]: *** [_module_/root/prg/01-rtdm_interrupt] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-3.18.7-rt2'
make: *** [all] Error 2
root@debian:~/prg/01-rtdm_interrupt#

Re: [Xenomai] Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Philippe Gerum]

On 03/06/2015 10:28 AM, Helder Daniel wrote:
> Hi,
> 
> I am trying to compile a simple RTDM driver that rtdm_printks a message
> when IRQ 12 (PS2 mouse) is up.
> 
> It's a Debian 32 bit system on top of a 64 bit core 2 duo P8600 processor,
> however I already installed g++multilib package which get me rid of other
> related errors with missing libc versions.
> 
> I am using a Makefile that works for Xenomai 2.5.x series, but I get an
> error: "boilerplate/wrappers.h: No such file or directory"
> and lot's of other. (Complete list of errors is at the end).
> 
> The make file I am using is this:
> 
> obj-m += intr.o
> 
> EXTRA_CFLAGS := -I/usr/xenomai/include -I/usr/include

This is wrong, you are pulling userland headers. The CFLAGS required to
build a kernel module using the RTDM API should be obtained by:

$(shell xeno-config --kcflags)

-- 
Philippe.

Re: [Xenomai] Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Philippe Gerum]

On 03/06/2015 11:03 AM, Helder Daniel wrote:
> On 6 March 2015 at 09:38, Philippe Gerum <rpm@xenomai.org
> <mailto:rpm@xenomai.org>> wrote:
> 
>     >
>     > obj-m += intr.o
>     >
>     > EXTRA_CFLAGS := -I/usr/xenomai/include -I/usr/include
> 
>     This is wrong, you are pulling userland headers. The CFLAGS required to
>     build a kernel module using the RTDM API should be obtained by:
> 
>     $(shell xeno-config --kcflags)
> 
> 
> Ok I was suspecting that (even makefile worked with 2.5) .
> I tried:
> 
> EXTRA_CFLAGS := $(shell xeno-config --kcflags)
> 
> but now it can not find rtdm.h:
> 

rtdm.h provides the RTDM API definitions to userland applications. You
want rtdm/driver.h for building a module implementing a RTDM driver.

> /root/prg/01-rtdm_interrupt/intr.c:2:18: fatal error: rtdm.h: No such
> file or directory
> 
> Whether It is included as <rtdm/rtdm.h>
> or just <rtdm.h>
> 
> I run the command in a shell and the output is:
> 
> root@debian:~/prg/01-rtdm_interrupt# xeno-config --kcflags
> 
> -Iarch/$(SRCARCH)/xenomai/include -Iinclude/xenomai
> 
> However complete output of make, tells SRCARCH not found:
> 
> $> make
> make -C /lib/modules/3.18.7-rt2/build M=/root/prg/01-rtdm_interrupt modules
> make[1]: Entering directory `/usr/src/linux-headers-3.18.7-rt2'
>   CC [M]  /root/prg/01-rtdm_interrupt/intr.o
> /bin/sh: 1: SRCARCH: not found
> /root/prg/01-rtdm_interrupt/intr.c:2:18: fatal error: rtdm.h: No such
> file or directory
> compilation terminated.
> make[2]: *** [/root/prg/01-rtdm_interrupt/intr.o] Error 1
> make[1]: *** [_module_/root/prg/01-rtdm_interrupt] Error 2
> make[1]: Leaving directory `/usr/src/linux-headers-3.18.7-rt2'
> make: *** [all] Error 2
> 

SRCARCH is defined by the standard Kbuild infrastructure, this is not a
Xenomai-specific variable. You may want to look at
xenomai3/kernel/drivers/ipc/Makefile for an illustration of its usage.

-- 
Philippe.

[Xenomai] Fwd: Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Helder Daniel]

Hi again,

I am sorry to ask help again about this point but I still am no able to
compile a kernel module with Xenomai 3.x support.

I made the changes pointed in the previous email:
In the module is now being included just:

<rtdm/driver.h>

and the makefile is now:

EXTRA_CFLAGS := $(shell xeno-config --kcflags)
all:

make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules


but it did not work. The error make issued was:

In file included from include/xenomai/cobalt/kernel/sched.h:24:0,
                 from include/xenomai/rtdm/driver.h:36,
                 from /root/prg/01-rtdm_interrupt/ps2auxint.c:4:
include/xenomai/cobalt/kernel/thread.h:32:33: fatal error:
asm/xenomai/machine.h: No such file or directory


Then I ran xeno-config --kcflags in the cmd line and it returned:

-Iarch/$(SRCARCH)/xenomai/include -Iinclude/xenomai


So I tried to explicitly add it to the Makefile (according to my kernel):

EXTRA_CFLAGS := -I/usr/src/linux-headers-3.16.0-ipipe/include/xenomai
-Iinclude/xenomai


Make returned asimilar error:

In file included from
/usr/src/linux-headers-3.16.0-ipipe/include/xenomai/cobalt/kernel/sched.h:24:0,
                 from
/usr/src/linux-headers-3.16.0-ipipe/include/xenomai/rtdm/driver.h:36,
                 from /root/prg/01-rtdm_interrupt/ps2auxint.c:4:
/usr/src/linux-headers-3.16.0-ipipe/include/xenomai/cobalt/kernel/thread.h:32:33:
fatal error: asm/xenomai/machine.h: No such file or directory


I am not sure what I am missing. Another header?
The wrong path to Xenomai headers?

My Xenomai install is cobalt on kernel 3.16.

$> uname -r
3.16.0-ipipe

$> /usr/xenomai/sbin/version -a
Xenomai/cobalt v3.0-rc3 --
Target: x86_64-unknown-linux-gnu
Compiler: gcc version 4.7.2 (Debian 4.7.2-5)
Build args:  '--with-core=cobalt' '--enable-registry' '--enable-smp'
'--enable-pshared' '--prefix=/usr/xenomai'


On 6 March 2015 at 10:14, Philippe Gerum <rpm@xenomai.org> wrote:

> On 03/06/2015 11:03 AM, Helder Daniel wrote:
> > On 6 March 2015 at 09:38, Philippe Gerum <rpm@xenomai.org
> > <mailto:rpm@xenomai.org>> wrote:
> >
> >     >
> >     > obj-m += intr.o
> >     >
> >     > EXTRA_CFLAGS := -I/usr/xenomai/include -I/usr/include
> >
> >     This is wrong, you are pulling userland headers. The CFLAGS required
> to
> >     build a kernel module using the RTDM API should be obtained by:
> >
> >     $(shell xeno-config --kcflags)
> >
> >
> > Ok I was suspecting that (even makefile worked with 2.5) .
> > I tried:
> >
> > EXTRA_CFLAGS := $(shell xeno-config --kcflags)
> >
> > but now it can not find rtdm.h:
> >
>
> rtdm.h provides the RTDM API definitions to userland applications. You
> want rtdm/driver.h for building a module implementing a RTDM driver.
>
> > /root/prg/01-rtdm_interrupt/intr.c:2:18: fatal error: rtdm.h: No such
> > file or directory
> >
> > Whether It is included as <rtdm/rtdm.h>
> > or just <rtdm.h>
> >
> > I run the command in a shell and the output is:
> >
> > root@debian:~/prg/01-rtdm_interrupt# xeno-config --kcflags
> >
> > -Iarch/$(SRCARCH)/xenomai/include -Iinclude/xenomai
> >
> > However complete output of make, tells SRCARCH not found:
> >
> > $> make
> > make -C /lib/modules/3.18.7-rt2/build M=/root/prg/01-rtdm_interrupt
> modules
> > make[1]: Entering directory `/usr/src/linux-headers-3.18.7-rt2'
> >   CC [M]  /root/prg/01-rtdm_interrupt/intr.o
> > /bin/sh: 1: SRCARCH: not found
> > /root/prg/01-rtdm_interrupt/intr.c:2:18: fatal error: rtdm.h: No such
> > file or directory
> > compilation terminated.
> > make[2]: *** [/root/prg/01-rtdm_interrupt/intr.o] Error 1
> > make[1]: *** [_module_/root/prg/01-rtdm_interrupt] Error 2
> > make[1]: Leaving directory `/usr/src/linux-headers-3.18.7-rt2'
> > make: *** [all] Error 2
> >
>
> SRCARCH is defined by the standard Kbuild infrastructure, this is not a
> Xenomai-specific variable. You may want to look at
> xenomai3/kernel/drivers/ipc/Makefile for an illustration of its usage.
>
> --
> Philippe.
>



-- 
Helder Daniel
UALG - FCT
DEEI

http://w3.ualg.pt/~hdaniel



-- 
Helder Daniel
UALG - FCT
DEEI

http://w3.ualg.pt/~hdaniel

Re: [Xenomai] Fwd: Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Philippe Gerum]

On 03/09/2015 07:57 PM, Helder Daniel wrote:
> Hi again,
> 
> I am sorry to ask help again about this point but I still am no able to
> compile a kernel module with Xenomai 3.x support.
> 
> I made the changes pointed in the previous email:
> In the module is now being included just:
> 
> <rtdm/driver.h>
> 
> and the makefile is now:
> 
> EXTRA_CFLAGS := $(shell xeno-config --kcflags)
> all:
> 
> make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
> 

You need /lib/modules/$(shell uname -r)/build to refer to a kernel tree
prepared with the Xenomai kernel sources, i.e. scripts/prepare-kernel.sh
should have run in this source tree at some point. The errors you get
indicate that no Xenomai code can be found there.

A basic Makefile for foo_module.ko composed of a single source foo.c,
and pulling the extra CFLAGS from xeno-config, could look like:

$(eval ccflags-y = $(shell xeno-config --kcflags))
obj-y += foo_module.o
foo_module-y := foo.o

-- 
Philippe.

Re: [Xenomai] Fwd: Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Helder Daniel]

>
> You need /lib/modules/$(shell uname -r)/build to refer to a kernel tree
> prepared with the Xenomai kernel sources, i.e. scripts/prepare-kernel.sh
> should have run in this source tree at some point. The errors you get
> indicate that no Xenomai code can be found there.
>

I had

/lib/modules/$(shell uname -r)/build

pointing to the kernel headers installed from a .deb package.
This package was created when compiling the Cobalt kernel with:

make-kpkg --initrd kernel_image kernel_headers

so I assumed that all Xenomai code is included in that package.

Now I pointed to the kernel source tree and I can compile the module.

This is strange. I was expecting that the kernel headers package created
with debian build to store all Xenomai info, so that I can install a cobalt
kernel image + headers in another computer, from 2 debian packages (I did
this before successfully with Xenomai 2.5.x) without having to copy all the
kernel source tree.


> A basic Makefile for foo_module.ko composed of a single source foo.c,
> and pulling the extra CFLAGS from xeno-config, could look like:
>
> $(eval ccflags-y = $(shell xeno-config --kcflags))
> obj-y += foo_module.o
> foo_module-y := foo.o


After pointing to the right source tree I had to make yet a change in the
makefile. I just add $(eval before EXTRA-CFLAGS ...
The makefile that works is now:

$eval(EXTRA_CFLAGS := $(shell xeno-config --kcflags))
all:
    make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules

Re: [Xenomai] Fwd: Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Philippe Gerum]

On 03/11/2015 06:30 PM, Helder Daniel wrote:
>     You need /lib/modules/$(shell uname -r)/build to refer to a kernel tree
>     prepared with the Xenomai kernel sources, i.e. scripts/prepare-kernel.sh
>     should have run in this source tree at some point. The errors you get
>     indicate that no Xenomai code can be found there.
> 
> 
> I had 
> 
> /lib/modules/$(shell uname -r)/build 
> 
> pointing to the kernel headers installed from a .deb package. 
> This package was created when compiling the Cobalt kernel with:
> 
> make-kpkg --initrd kernel_image kernel_headers 
> 
> so I assumed that all Xenomai code is included in that package.
> 
> Now I pointed to the kernel source tree and I can compile the module.
> 
> This is strange. I was expecting that the kernel headers package created
> with debian build to store all Xenomai info, so that I can install a
> cobalt kernel image + headers in another computer, from 2 debian
> packages (I did this before successfully with Xenomai 2.5.x) without
> having to copy all the kernel source tree.
>  

Following the current kernel standards, Xenomai 3 introduces a strict
split between kernel headers and user-space ones, with a uapi/ section
for the shared portion which exposes the ABI. Maybe debian/rules does
not reflect that change.

-- 
Philippe.

Re: [Xenomai] Fwd: Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Gilles Chanteperdrix]

Philippe Gerum wrote:
> On 03/11/2015 06:30 PM, Helder Daniel wrote:
>>     You need /lib/modules/$(shell uname -r)/build to refer to a kernel
>> tree
>>     prepared with the Xenomai kernel sources, i.e.
>> scripts/prepare-kernel.sh
>>     should have run in this source tree at some point. The errors you
>> get
>>     indicate that no Xenomai code can be found there.
>>
>>
>> I had
>>
>> /lib/modules/$(shell uname -r)/build
>>
>> pointing to the kernel headers installed from a .deb package.
>> This package was created when compiling the Cobalt kernel with:
>>
>> make-kpkg --initrd kernel_image kernel_headers
>>
>> so I assumed that all Xenomai code is included in that package.
>>
>> Now I pointed to the kernel source tree and I can compile the module.
>>
>> This is strange. I was expecting that the kernel headers package created
>> with debian build to store all Xenomai info, so that I can install a
>> cobalt kernel image + headers in another computer, from 2 debian
>> packages (I did this before successfully with Xenomai 2.5.x) without
>> having to copy all the kernel source tree.
>>
>
> Following the current kernel standards, Xenomai 3 introduces a strict
> split between kernel headers and user-space ones, with a uapi/ section
> for the shared portion which exposes the ABI. Maybe debian/rules does
> not reflect that change.
>

make-kpkg does not use the debian rules. It uses its own rules, and yes,
you may have issues if you use an old version of make-pkkg (like for
instance the one in debian stable) with a newer kernel. The solution is to
install make-kpkg from debian unstable. Or maybe use a backport if it
exists. Now, I do not know if make-kpkg will resolve the symbolic links
in the kernel sources, or if it keeps them. If it keeps them, you need
to keep the xenomai headers at the place they were when running
prepare-kernel.sh.

-- 
                    Gilles.

Re: [Xenomai] Fwd: Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Helder Daniel]

I upgraded from kernel-package v 12.036+nmu3 of wheezy to the newer
version 13.014+nmu1
included in jessie (and also in sid).

I get the same errors when compiling a kernel module.

Then I created a kernel_source debian package.
Install it at /usr/src and make /lib/modules/3.16.0-ipipe/build points to
it rather than to the full source tree.

I didn't work either.
It give me an error saying that it can not find configuration of kernel.

The only way I can move the required headers to compile RTDM modules to
another computer without copying all the 6.2 GBytes of the full kernel
source tree after compiled was cleaning the compilation with. make clean
and then pack the much smaller, around 660 MBytes, clean source tree

This way installing a kernel_image package (with ipipe patch) unpacking the
previously packed source tree, making /lib/modules/3.16.0-ipipe/build
points to it and installing Xenomai 3.x-rc3 it is possible to compile
kernel modules for the RTDM API without needing to compile the kernel in
every computer you want to install Xenomai.

PS:
Just for a sanity check I installed Xenomai 2.6.4
and created kernel-headers-3.14.17 patched with ipipe-core

them make /lib/modules/3.14.17-ipipe/build points to the kernel-headers and
not the full kernel source.

This allows to compiled a kernel module successfully for linux 3.14.17
without needing of the full kernel tree (xeno 2.6.4 of course).



On 11 March 2015 at 21:01, Gilles Chanteperdrix <
gilles.chanteperdrix@xenomai.org> wrote:

>
> Philippe Gerum wrote:
> > On 03/11/2015 06:30 PM, Helder Daniel wrote:
> >>     You need /lib/modules/$(shell uname -r)/build to refer to a kernel
> >> tree
> >>     prepared with the Xenomai kernel sources, i.e.
> >> scripts/prepare-kernel.sh
> >>     should have run in this source tree at some point. The errors you
> >> get
> >>     indicate that no Xenomai code can be found there.
> >>
> >>
> >> I had
> >>
> >> /lib/modules/$(shell uname -r)/build
> >>
> >> pointing to the kernel headers installed from a .deb package.
> >> This package was created when compiling the Cobalt kernel with:
> >>
> >> make-kpkg --initrd kernel_image kernel_headers
> >>
> >> so I assumed that all Xenomai code is included in that package.
> >>
> >> Now I pointed to the kernel source tree and I can compile the module.
> >>
> >> This is strange. I was expecting that the kernel headers package created
> >> with debian build to store all Xenomai info, so that I can install a
> >> cobalt kernel image + headers in another computer, from 2 debian
> >> packages (I did this before successfully with Xenomai 2.5.x) without
> >> having to copy all the kernel source tree.
> >>
> >
> > Following the current kernel standards, Xenomai 3 introduces a strict
> > split between kernel headers and user-space ones, with a uapi/ section
> > for the shared portion which exposes the ABI. Maybe debian/rules does
> > not reflect that change.
> >
>
> make-kpkg does not use the debian rules. It uses its own rules, and yes,
> you may have issues if you use an old version of make-pkkg (like for
> instance the one in debian stable) with a newer kernel. The solution is to
> install make-kpkg from debian unstable. Or maybe use a backport if it
> exists. Now, I do not know if make-kpkg will resolve the symbolic links
> in the kernel sources, or if it keeps them. If it keeps them, you need
> to keep the xenomai headers at the place they were when running
> prepare-kernel.sh.
>
> --
>                     Gilles.
>
>


-- 
Helder Daniel
UALG - FCT
DEEI

http://w3.ualg.pt/~hdaniel

Re: [Xenomai] Fwd: Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Gilles Chanteperdrix]

On Fri, Mar 13, 2015 at 01:50:07PM +0000, Helder Daniel wrote:
> Just for a sanity check I installed Xenomai 2.6.4
> and created kernel-headers-3.14.17 patched with ipipe-core

Well, once again: if the kernel-headers package contains symbolic
link to xenomai sources, then you have to keep xenomai sources (or
the reduced xenomai-kernel-sources package) around. How did you
generate the kernel, with prepare-kernel.sh ?

Does the kernel-header package contain the .config?

> 
> them make /lib/modules/3.14.17-ipipe/build points to the kernel-headers and
> not the full kernel source.

Well, it is silly to touch that build symbolic link:
1- the debian packages are supposed to handle that
2- when building a kernel module you are supposed to pass the path
to kernel source as a parameter to the make -C command. So, simply
passing the path to the kernel headers location should avoid having
to touch the symbolic link.

as documented in Documentation/kbuild/modules.txt in the kernel sources.

-- 
					    Gilles.

Re: [Xenomai] Fwd: Error boilerplate/wrappers.h no found trying to compile RTDM module on 3.x-rc3 cobalt

[Helder Daniel]

On 13 March 2015 at 14:04, Gilles Chanteperdrix <
gilles.chanteperdrix@xenomai.org> wrote:

> On Fri, Mar 13, 2015 at 01:50:07PM +0000, Helder Daniel wrote:
> > Just for a sanity check I installed Xenomai 2.6.4
> > and created kernel-headers-3.14.17 patched with ipipe-core
>
> Well, once again: if the kernel-headers package contains symbolic
> link to xenomai sources, then you have to keep xenomai sources (or
> the reduced xenomai-kernel-sources package) around.


The Xenomai sources are at: /usr/src/xenomai-3.0-rc3


> How did you
> generate the kernel, with prepare-kernel.sh ?
>

yes:

/usr/src/xenomai-3.0-rc3/scripts/prepare-kernel.sh
--linux=/usr/src/linux-3.16
--ipipe=/usr/src/xenomai-3.0-rc3/kernel/cobalt/arch/x86/patches/ipipe-core-3.16-x86-3.patch


> Does the kernel-header package contain the .config?


Yes.


>
> >
> > them make /lib/modules/3.14.17-ipipe/build points to the kernel-headers
> and
> > not the full kernel source.
>
> Well, it is silly to touch that build symbolic link:
> 1- the debian packages are supposed to handle that
>

Yes


> 2- when building a kernel module you are supposed to pass the path
> to kernel source as a parameter to the make -C command. So, simply
> passing the path to the kernel headers location should avoid having
> to touch the symbolic link.

as documented in Documentation/kbuild/modules.txt in the kernel sources.
>

Yes, I could do that I was just testing.

Instead I changed the symbolic link to test if with a standard Makefile,
the problem is just info that is missing in the headers and are in the
source tree.
(But I could test the same modifying the path in the Makefile...)