Hallo. On 2007-01-23, Hemen Kapadia wrote: > This is a multipart message in MIME format. > --=_alternative 0046BF8C6525726C_= > Content-Transfer-Encoding: 7bit > Content-Type: text/plain; charset="us-ascii" > > Hello, > > I am trying to compile the following code on a system which has been > booted with RHEL stock kernel. If I boot the same system with a custom > kernel compiled from the source downloaded from kernel.org it compiles > like a charm. However if I boot the system on the RHEL stock kernel > (2.6.9-42.EL) no object is created in the working directory. First, you are using very old kernel -- 2.6.9-42.EL, thus my suggestions may fail. Second. Do you have that kernel configured in its directory (make modules_prepare)? That generally depends on write permission in `/usr/src/kernels/2.6.9-42.EL-i686'. If you don't have one (ordinary user should not), you may find useful to use separate output directory `make O=/tmp/linuz'. But to have fully working `make O=dir M=dir' you need at least <http://permalink.gmane.org/gmane.linux.kernel/485431> this patch. Your sources seems to be OK, so that is only problem, i see. My example. Do not see, that this is my own files, nothing is generated in linux sources. -*- bash -*- olecom@deen:~/kernel.org/_work/linux/linux-2.6.20-rc5$ olecom@deen:~/kernel.org/_work/linux/linux-2.6.20-rc5$ rm -rf /tmp/linuz/ olecom@deen:~/kernel.org/_work/linux/linux-2.6.20-rc5$ mkdir /tmp/linuz/ olecom@deen:~/kernel.org/_work/linux/linux-2.6.20-rc5$ make O=/tmp/linuz defconfig >/dev/null olecom@deen:~/kernel.org/_work/linux/linux-2.6.20-rc5$ cd /tmp/linuz/ olecom@deen:/tmp/linuz$ make modules_prepare >/dev/null olecom@deen:/tmp/linuz$ make M=~/kernel.org/_work/ti_usb/ 2>/dev/null make -C /mnt/work/app-src-build/kernel.org/_work/linux/linux-2.6.20-rc5 O=/dev/shm/linuz WARNING: Symbol version dump /dev/shm/linuz/Module.symvers is missing; modules will have no dependencies and modversions. LD /home/olecom/kernel.org/_work/ti_usb/built-in.o CC [M] /home/olecom/kernel.org/_work/ti_usb/ti_usb_3410_5052.o Building modules, stage 2. MODPOST 1 modules CC /home/olecom/kernel.org/_work/ti_usb/ti_usb_3410_5052.mod.o LD [M] /home/olecom/kernel.org/_work/ti_usb/ti_usb_3410_5052.ko olecom@deen:/tmp/linuz$ -*- _____ > > Thanks and Regards, > Hemen Kiran Kapadia > Tata Consultancy Services > Mailto: hemen.kapadia@xxxxxxx > Website: http://www.tcs.com >=====-----=====-----===== > Notice: The information contained in this e-mail > message and/or attachments to it may contain > confidential or privileged information. If you are > not the intended recipient, any dissemination, use, > review, distribution, printing or copying of the > information contained in this e-mail message > and/or attachments to it are strictly prohibited. If > you have received this communication in error, > please notify us by reply e-mail or telephone and > immediately and permanently delete the message > and any attachments. Thank you > > > > --=_alternative 0046BF8C6525726C_= > Content-Transfer-Encoding: 7bit > Content-Type: text/html; charset="us-ascii" > > ><br><font size=2 face="Courier New">Hello,</font> ><br> ><br><font size=2 face="Courier New">I am trying to compile the following > code on a system which has been booted with RHEL stock kernel. If I boot > the same system with a custom kernel compiled from the source downloaded > from kernel.org it compiles like a charm. However if I boot the system > on the RHEL stock kernel (2.6.9-42.EL) no object is created in the working > directory. </font> ><br> ><br><font size=2 face="Courier New">My session output is as below. I do > not get any errors or warnings while compiling, but the module object is > not being created. I believe I have the required packages installed. Can > anyone help me compile it.</font> ><br> ><br><font size=2><tt>[hemen@localhost simple_module]$ ls -l</tt></font> ><br><font size=2><tt>total 24</tt></font> ><br><font size=2><tt>-rw-rw-rw- 1 hemen hemen 26 Dec 20 12:14 > Kbuild</tt></font> ><br><font size=2><tt>-rw-rw-rw- 1 hemen hemen 224 Dec 20 12:14 Makefile</tt></font> ><br><font size=2><tt>-rw-rw-rw- 1 hemen hemen 377 Dec 18 15:39 simple_module.c</tt></font> ><br><font size=2><tt>[hemen@localhost simple_module]$ make</tt></font> ><br><font size=2><tt>make -C /lib/modules/`uname -r`/build M=`pwd` modules</tt></font> ><br><font size=2><tt>make[1]: Entering directory `/usr/src/kernels/2.6.9-42.EL-i686'</tt></font> ><br><font size=2><tt> Building modules, stage 2.</tt></font> ><br><font size=2><tt> MODPOST</tt></font> ><br><font size=2><tt>make[1]: Leaving directory `/usr/src/kernels/2.6.9-42.EL-i686'</tt></font> ><br><font size=2><tt>[hemen@localhost simple_module]$ ls</tt></font> ><br><font size=2><tt>Kbuild Makefile simple_module.c</tt></font> ><br><font size=2 face="Courier New">[hemen@localhost ~]$ rpm -qa | grep > kernel</font> ><br><font size=2 face="Courier New">kernel-smp-devel-2.6.9-42.EL</font> ><br><font size=2 face="Courier New">kernel-2.6.9-42.EL</font> ><br><font size=2 face="Courier New">kernel-ib-1.0-1</font> ><br><font size=2 face="Courier New">kernel-utils-2.4-13.1.83</font> ><br><font size=2 face="Courier New">kernel-hugemem-devel-2.6.9-42.EL</font> ><br><font size=2 face="Courier New">kernel-devel-2.6.9-42.EL</font> ><br><font size=2 face="Courier New">[hemen@localhost ~]$</font> ><br> ><br> ><br><font size=2 face="Courier New">Also providing the source, kbuild and > Makefile I am using.</font> ><br> ><br> ><br> ><br><font size=2 face="Courier New">simple_module.c</font> ><br><font size=2 face="Courier New">===============</font> ><br><font size=2 face="Courier New">/* A simple linux kernel module */</font> ><br> ><br><font size=2 face="Courier New">/* Include the required headers */</font> ><br><font size=2 face="Courier New">#include <linux/module.h></font> ><br><font size=2 face="Courier New">#include <linux/kernel.h></font> ><br> ><br><font size=2 face="Courier New">/* The module initialisation function > */</font> ><br><font size=2 face="Courier New">int init_module(void)</font> ><br><font size=2 face="Courier New">{</font> ><br><font size=2 face="Courier New"> printk(KERN_INFO > "Simple module inserted.\n");</font> ><br><font size=2 face="Courier New"> return > 0;</font> ><br><font size=2 face="Courier New">}</font> ><br> ><br><font size=2 face="Courier New">/* The module cleanup function */</font> ><br><font size=2 face="Courier New">void cleanup_module()</font> ><br><font size=2 face="Courier New">{</font> ><br><font size=2 face="Courier New"> printk(KERN_INFO > "Removing simple module.\n");</font> ><br><font size=2 face="Courier New">}</font> ><br> ><br><font size=2 face="Courier New">Kbuild</font> ><br><font size=2 face="Courier New">======</font> ><br><font size=2 face="Courier New">obj-m := simple_module.o</font> ><br> ><br> ><br><font size=2 face="Courier New">Makefile</font> ><br><font size=2 face="Courier New">=======</font> ><br><font size=2 face="Courier New"> KERNELDIR >:= /lib/modules/`uname -r`/build</font> ><br> ><br><font size=2 face="Courier New">modules:</font> ><br><font size=2 face="Courier New"> $(MAKE) > -C $(KERNELDIR) M=`pwd` modules</font> ><br> ><br><font size=2 face="Courier New">modules_install:</font> ><br><font size=2 face="Courier New"> $(MAKE) > -C $(KERNELDIR) M=`pwd` modules_install</font> ><br> ><br><font size=2 face="Courier New">clean:</font> ><br><font size=2 face="Courier New"> $(MAKE) > -C $(KERNELDIR) M=`pwd` clean </font> ><br> ><br> ><br> ><br><font size=2 face="Courier New">Thanks and Regards,<br> > Hemen Kiran Kapadia<br> > Tata Consultancy Services<br> > Mailto: hemen.kapadia@xxxxxxx<br> > Website: http://www.tcs.com</font><pre>=====-----=====-----===== > Notice: The information contained in this e-mail > message and/or attachments to it may contain > confidential or privileged information. If you are > not the intended recipient, any dissemination, use, > review, distribution, printing or copying of the > information contained in this e-mail message > and/or attachments to it are strictly prohibited. If > you have received this communication in error, > please notify us by reply e-mail or telephone and > immediately and permanently delete the message > and any attachments. Thank you > > ></pre> > --=_alternative 0046BF8C6525726C_=-- > > -- > Kernelnewbies: Help each other learn about the Linux kernel. > Archive: http://mail.nl.linux.org/kernelnewbies/ > FAQ: http://kernelnewbies.org/faq/ > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
