Message-ID: <4F91F926.2080507@googlemail.com> (sfid-20120421_020259_936375_8BCCE0C8)
Date: Sat, 21 Apr 2012 01:02:46 +0100
From: Mr Dash Four <mr.dash.four@googlemail.com>
MIME-Version: 1.0
To: linux-wireless@vger.kernel.org
Subject: wl1251 build woes (compat-wireless 3.3.1-1, 3.1.1 as well as 2.6.39)
Content-Type: text/plain; charset=ISO-8859-1
Sender: linux-wireless-owner@vger.kernel.org

I am trying to build the wl1251 driver from compat-wireless 3.3.1-1, using a separate (Android-based) kernel as a base, but I am encountering a few snags:

>From the base compat-wireless-3.3.1-1 (CCOMPILER environemnt variable is set to the toolchain directory prefix I use for ARM):

[mockbuild@test1 compat-wireless-3.3.1-1]$ ./scripts/driver-select wl1251
[mockbuild@test1 compat-wireless-3.3.1-1]$ make ARCH=arm CROSS_COMPILE=$CCOMPILER KLIB=<android_kernel_dir> KLIB_BUILD=<android_kernel_dir>
/builddir/compat-wireless-3.3.1-1/config.mk:212: "WARNING: CONFIG_CFG80211_WEXT will be deactivated or not working because kernel was compiled with CONFIG_WIRELESS_EXT=n. Tools using wext interface like iwconfig will not work. To activate it build your kernel e.g. with CONFIG_LIBIPW=m."
[...]
  Building modules, stage 2.
  MODPOST 3 modules
  CC      /builddir/compat-wireless-3.3-1/compat/compat.mod.o
  LD [M]  /builddir/compat-wireless-3.3-1/compat/compat.ko
  CC      /builddir/compat-wireless-3.3-1/net/mac80211/mac80211.mod.o
  LD [M]  /builddir/compat-wireless-3.3-1/net/mac80211/mac80211.ko
  CC      /builddir/compat-wireless-3.3-1/net/wireless/cfg80211.mod.o
  LD [M]  /builddir/compat-wireless-3.3-1/net/wireless/cfg80211.ko
make[1]: Leaving directory `<android_kernel_dir>'

Should I be worried about the above warning? I do *not* have "CONFIG_WIRELESS_EXT" anywhere in my (android kernel) .config, but do have CONFIG_WIRELESS=y as well as CONFIG_CFG80211_WEXT=y. Also, I can't see any of the wl1251 drivers from compat-wireless (located in drivers/net/wireless/wl1251) being built at all! Am I missing something? 

On a slightly different note, I also tried to use previous versions of compat-wireless - 3.1.1 as well as 2.6.39-1 - but things got even more hairy. After executing make, I got this:

make[3]: *** No rule to make target `/builddir/compat-wireless-3.1.1-1/net/wireless/db.txt', needed by `/builddir/compat-wireless-2.6.39-1/net/wireless/regdb.c'.  Stop.

After the above error I just copied db.txt from wireless-regdb-2011.04.28.tar.bz2 to net/wireless, but then got this next:

make[3]: *** No rule to make target `/builddir/compat-wireless-3.1.1-1/net/wireless/genregdb.awk', needed by `/builddir/compat-wireless-3.1.1-1/net/wireless/regdb.c'.  Stop.

So, again, I copied genregdb.awk from the 3.3.1-1 version of compat-wireless, but that wasn't enough, unfortunately:

WARNING: "reg_regdb_size" [/builddir/compat-wireless-3.1.1-1/net/wireless/cfg80211.ko] undefined!
WARNING: "reg_regdb" [/builddir/compat-wireless-3.1.1-1/net/wireless/cfg80211.ko] undefined!

The wl1251 drivers are not built here either - drivers/net/wireless/wl1251 is untouched! Any help or advice as to how can I resolve this would very much appreciated, thanks!