Cross compiling currently broken?

It would appear that there is something broken with the current Makefile when crosscompiling - I need a bit of help figuring out a proper solution.

In this case it's barely cross compiling, I just want to use a kernel I compiled somewhere, but isn't installed (I'm also in a chroot). According to the docs (http://linuxwireless.org/en/users/Download) I should do something like:

make KLIB=/home/mcgrof/kernels/linux-2.6.27.22 \
KLIB_BUILD=/home/mcgrof/kernels/linux-2.6.27.22

However, the makefile then installs the files in completely the wrong location, eg the following puts the files in /usr/src/linux/lib/modules/2.6.30.5-grsec-wrap/ !!

make KLIB=/usr/src/linux \
KLIB_BUILD=/usr/src/linux install-modules

So KLIB should apparently be something like /lib/modules/xyz. However, this is still wrong because the line below puts the files in: /lib/modules/2.6.30.5-grsec-wrap/lib/modules/2.6.30.5-grsec-wrap/

make KLIB=/lib/modules/2.6.30.5-grsec-wrap/ \
KLIB_BUILD=/usr/src/linux install-modules

Adding unsetting KMODPATH_ARG seems to do the trick (but seems unintended?):

make KLIB=/lib/modules/2.6.30.5-grsec-wrap/ \
KLIB_BUILD=/usr/src/linux KMODPATH_ARG= install-modules

But I still get repeated errors while building (where this is the currently running kernel, but the modules dir is unavailable in this chroot):

FATAL: Could not load
/lib/modules/2.6.29.6-grsec2.1.14-vs2.3.0.36.14/modules.dep: No such file or directory
FATAL: Could not load
/lib/modules/2.6.29.6-grsec2.1.14-vs2.3.0.36.14/modules.dep: No such file or directory

This appears to be caused by these lines at the top of the makefile:
MADWIFI=$(shell $(MODPROBE) -l ath_pci)
OLD_IWL=$(shell $(MODPROBE) -l iwl4965)

Clearly these need some parametrisation to include the running kernel name. Something like this might pluck out the correct uname:
KERNELRELEASE = $(cat $(KLIB_BUILD)/include/config/kernel.release 2> /dev/null)

I'm not quite clear what all the KLIB/KLIB_BUILD vars are supposed to be achieving, but at present they aren't working correctly when overridden to build a non installed kernel. I'm surprised more people aren't hitting this?

Grateful if someone with a bit more experience could suggest a proper fix?

Thanks

Ed W

I use /lib/modules/xyz/build just fine.

mcgrof@tux ~/devel/compat-wireless-2.6 (git::master)$ ./scripts/driver-select ath9k
Processing new driver-select request...
Backing up makefile: Makefile.bk
Backing up makefile: drivers/net/wireless/Makefile.bk Backing up makefile: drivers/net/wireless/ath/Makefile.bk Backing up makefile: net/wireless/Makefile.bk Backing up makefile: drivers/ssb/Makefile.bk Backing up makefile: drivers/net/usb/Makefile.bk Backing up makefile: drivers/misc/eeprom/Makefile.bk

mcgrof@tux ~/devel/compat-wireless-2.6 (git::master)$ make KLIB=/lib/modules/2.6.27-02062726-generic/build/ KLIB_BUILD=/lib/modules/2.6.27-02062726-generic/build/ ./scripts/gen-compat-autoconf.sh config.mk > include/linux/compat_autoconf.h make -C /lib/modules/2.6.27-02062726-generic/build/ M=/home/mcgrof/devel/compat-wireless-2.6 modules
make[1]: Entering directory `/usr/src/linux-headers-2.6.27-02062726-generic'

  LD      /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/built-in.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/main.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/regd.o
  LD [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath.o
  LD      /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/built-in.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/hw.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/eeprom.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/eeprom_def.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/eeprom_4k.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/eeprom_9287.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/mac.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/calib.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/ani.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/phy.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/beacon.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/main.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/recv.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/xmit.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/virtual.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/rc.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/pci.o
  LD [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/ath9k.o
  LD      /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/built-in.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/main.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/sta_info.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/wep.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/wpa.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/scan.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/ht.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/agg-tx.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/agg-rx.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/ibss.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/mlme.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/iface.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/rate.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/michael.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/tkip.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/aes_ccm.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/aes_cmac.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/cfg.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/rx.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/spectmgmt.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/tx.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/key.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/util.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/wme.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/event.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/led.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/debugfs.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/debugfs_sta.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/debugfs_netdev.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/debugfs_key.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/mesh.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/mesh_pathtbl.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/mesh_plink.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/mesh_hwmp.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/pm.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/rc80211_pid_algo.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/rc80211_pid_debugfs.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/rc80211_minstrel.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/rc80211_minstrel_debugfs.o
  LD [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/mac80211.o
  LD      /home/mcgrof/devel/compat-wireless-2.6/net/rfkill/built-in.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/rfkill/core.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/rfkill/input.o
  LD [M]  /home/mcgrof/devel/compat-wireless-2.6/net/rfkill/rfkill_backport.o
  LD      /home/mcgrof/devel/compat-wireless-2.6/net/wireless/built-in.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/core.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/sysfs.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/radiotap.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/util.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/reg.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/scan.o

/home/mcgrof/devel/compat-wireless-2.6/net/wireless/scan.c: In function ‘cfg80211_bss_update’:
/home/mcgrof/devel/compat-wireless-2.6/net/wireless/scan.c:422:
warning: unused variable ‘used’

  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/nl80211.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/mlme.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/ibss.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/sme.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/chan.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/wext-compat.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/wext-sme.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/compat-2.6.28.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/compat-2.6.29.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/compat-2.6.30.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/compat-2.6.31.o
  CC [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/compat-2.6.32.o
  LD [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/cfg80211.o
  LD      /home/mcgrof/devel/compat-wireless-2.6/built-in.o
  Building modules, stage 2.
  MODPOST 5 modules
  CC      /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath.mod.o
  LD [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath.ko
  CC      /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/ath9k.mod.o
  LD [M]  /home/mcgrof/devel/compat-wireless-2.6/drivers/net/wireless/ath/ath9k/ath9k.ko
  CC      /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/mac80211.mod.o
  LD [M]  /home/mcgrof/devel/compat-wireless-2.6/net/mac80211/mac80211.ko
  CC      /home/mcgrof/devel/compat-wireless-2.6/net/rfkill/rfkill_backport.mod.o
  LD [M]  /home/mcgrof/devel/compat-wireless-2.6/net/rfkill/rfkill_backport.ko
  CC      /home/mcgrof/devel/compat-wireless-2.6/net/wireless/cfg80211.mod.o
  LD [M]  /home/mcgrof/devel/compat-wireless-2.6/net/wireless/cfg80211.ko

make[1]: Leaving directory `/usr/src/linux-headers-2.6.27-02062726-generic'

Luis
Luis

Hi

Can you adapt your environment to be a little closer to mine?

For example if you don't have /lib/modules/'uname -r` available do you get the nasty errors that I see?

Is the above all on one line? Assuming so then can you please try this:

I would expect your modules to end up in

/lib/modules/2.6.27-02062726-generic/build/lib/modules/2.6.27-02062726-generic/build/

(If you read the above you can presumably see what has happened)

Is this the case for you?

Your make output varies from mine (compat-wireless-2009-8-24), one of us obviously has somewhat newer build file - perhaps the make file just changed?

Thanks for your comments

Ed W

Try the patch I posted a few weeks ago. It solved this issue for us.

-Philip