Small issue building LKM in latest 3.7 kernel

Discussion:

Ajith Adapa

2013-02-20 04:21:27 UTC

Hi,

I am not sure if this is the right place to ask the doubt or not but
since I got this issue building LKM i am dropping a maile down here
sorry for inconvenience caused.

I am trying to build private LKM on latest 3.7 kernel using GCC 4.7.2.

/usr/bin/gcc -M -g -O2 -DMODULE -D__KERNEL__ -DLINUX
-fno-strict-aliasing -fno-common -ffreestanding -O2 -m32
-fomit-frame-pointer -g -pipe -msoft-float
-mpreferred-stack-boundary=2 -fno-unit-at-a-time -march=i686
-mtune=pentium4 -mregparm=3 -I/lib/modules/3.7.6.1.i686/source/include
-I/lib/modules/3.7.6.1.i686/source/arch/x86/include
-I/lib/modules/3.7.6.1.i686/source/include
-I/lib/modules/3.7.6.1.i686/source/include2
-I/lib/modules/3.7.6.1.i686/source/include/asm/mach-default
-I/lib/modules/3.7.6.1.i686/source/include2/asm/mach-default
-I/lib/modules/3.7.6.1.i686/source/include/uapi
-I/lib/modules/3.7.6.1.i686/source/include/linux/kconfig.h
-I/lib/modules/3.7.6.1.i686/source/include/generated/uapi
-I/lib/modules/3.7.6.1.i686/source/arch/x86/include/generated/uapi
-m32 tmp/l2.c

I get the following error as shown below

In file included from /home/linux-26/include/net/net_namespace.h:13:0,
from /home/linux-26/include/linux/netdevice.h:43,
from tmp/l2.c:26:
/home/linux-26/include/net/netns/mib.h:15:15: error: missing binary
operator before token "("
In file included from /home/linux-26/include/net/net_namespace.h:17:0,
from /home/linux-26/include/linux/netdevice.h:43,
from tmp/l2.c:26:
/home/linux-26/include/net/netns/ipv6.h:75:15: error: missing binary
operator before token "("

Any idea about the issue ?? Even I include uapi directory properly in
the command.

Regards,
Ajith
--------------------------------------------
codingfreak.blogspot.com

Randy Dunlap

2013-02-20 19:16:44 UTC

Permalink

Post by Ajith Adapa
Hi,
I am not sure if this is the right place to ask the doubt or not but
since I got this issue building LKM i am dropping a maile down here
sorry for inconvenience caused.
I am trying to build private LKM on latest 3.7 kernel using GCC 4.7.2.
/usr/bin/gcc -M -g -O2 -DMODULE -D__KERNEL__ -DLINUX
-fno-strict-aliasing -fno-common -ffreestanding -O2 -m32
-fomit-frame-pointer -g -pipe -msoft-float
-mpreferred-stack-boundary=2 -fno-unit-at-a-time -march=i686
-mtune=pentium4 -mregparm=3 -I/lib/modules/3.7.6.1.i686/source/include
-I/lib/modules/3.7.6.1.i686/source/arch/x86/include
-I/lib/modules/3.7.6.1.i686/source/include
-I/lib/modules/3.7.6.1.i686/source/include2
-I/lib/modules/3.7.6.1.i686/source/include/asm/mach-default
-I/lib/modules/3.7.6.1.i686/source/include2/asm/mach-default
-I/lib/modules/3.7.6.1.i686/source/include/uapi
-I/lib/modules/3.7.6.1.i686/source/include/linux/kconfig.h
-I/lib/modules/3.7.6.1.i686/source/include/generated/uapi
-I/lib/modules/3.7.6.1.i686/source/arch/x86/include/generated/uapi
-m32 tmp/l2.c
I get the following error as shown below
In file included from /home/linux-26/include/net/net_namespace.h:13:0,
from /home/linux-26/include/linux/netdevice.h:43,
/home/linux-26/include/net/netns/mib.h:15:15: error: missing binary
operator before token "("
In file included from /home/linux-26/include/net/net_namespace.h:17:0,
from /home/linux-26/include/linux/netdevice.h:43,
/home/linux-26/include/net/netns/ipv6.h:75:15: error: missing binary
operator before token "("
Any idea about the issue ?? Even I include uapi directory properly in
the command.

Does your module source file
#include <linux/kconfig.h>
?
It probably needs to #include that file.

--
~Randy

Ajith Adapa

2013-02-21 04:31:38 UTC

Permalink

That really fixed it .. thanks randy

But Last time when I tried in 2.6.32 kernel I am not including kconfig.h.

Is there any major change by latest 3.7 kernel where we need to add
kconfig.h in code ? Just knowing

Regards,
Ajith
--------------------------------------------
codingfreak.in

Post by Randy Dunlap

Does your module source file
#include <linux/kconfig.h>
?
It probably needs to #include that file.
--
~Randy

Randy Dunlap

2013-02-21 05:08:34 UTC

Permalink

Post by Ajith Adapa
That really fixed it .. thanks randy
But Last time when I tried in 2.6.32 kernel I am not including kconfig.h.
Is there any major change by latest 3.7 kernel where we need to add
kconfig.h in code ? Just knowing

Obviously Yes. :)

Any source file (or header file) that uses #IS_ENABLED() or any of its cousins
as defined in <linux/kconfig.h> needs to #include <linux/kconfig.h>.

Post by Ajith Adapa
Regards,
Ajith
--------------------------------------------
codingfreak.in

Post by Randy Dunlap

Does your module source file
#include <linux/kconfig.h>
?
It probably needs to #include that file.

--
~Randy